Home > Products > National Data >
000
AXNT20 KNHC 250603
TWDAT

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
205 AM EDT FRI APR 25 2014

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL
AMERICA...GULF OF MEXICO...CARIBBEAN SEA...NORTHERN SECTIONS OF
SOUTH AMERICA...AND ATLANTIC OCEAN TO THE AFRICAN COAST FROM THE
EQUATOR TO 32N. THE FOLLOWING INFORMATION IS BASED ON SATELLITE
IMAGERY...WEATHER OBSERVATIONS...RADAR...AND METEOROLOGICAL
ANALYSIS.

BASED ON 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
2345 UTC.

...ITCZ/MONSOON TROUGH...
THE MONSOON TROUGH EXTENDS ACROSS AFRICA INTO THE E TROPICAL
ATLC NEAR 11N15W AND CONTINUES ALONG 06N17W TO 03N22W. THE ITCZ
BEGINS NEAR 03N23W AND CONTINUES ALONG 01S35W TO THE NORTHERN
COAST OF BRAZIL NEAR 02S44W. ISOLATED SHOWERS ARE FROM 02N-05N
BETWEEN 19W-31W. SCATTERED MODERATE CONVECTION IS FROM 0N-03N W
OF 44W.

...DISCUSSION...

GULF OF MEXICO...
WESTERLY FLOW DOMINATES ALOFT AND ADVECTS MOISTURE FROM THE E
PACIFIC INTO THE BASIN. A SHORT-WAVE TROUGH IS MOVING ACROSS THE
MIDDLE AND LOWER MISSISSIPPI VALLEY SUPPORTING A COLD FRONT THAT
EXTENDS FROM ILLINOIS SW TO NW LOUISIANA TO EASTERN TEXAS. LOW
LEVEL MOISTURE CONVERGENCE ALONG THE FRONT IS ENHANCING ISOLATED
SHOWERS OVER THE NW GULF N OF 25N W OF 86W. ADVECTION FOG IS
ALSO NOTED OVER THE NW GULF N OF 27N W OF 93W. OTHERWISE...A
WEAK SURFACE RIDGE DOMINATES ACROSS THE GULF ANCHORED BY A 1016
MB HIGH OVER THE SE GULF NEAR 26N83W. THIS SURFACE PATTERN IS
PROVIDING THE GULF WITH E-SE WIND FLOW RANGING FROM 5-15 KT. THE
TAIL OF THE COLD FRONT WILL MOVE INTO THE NW GULF LATER THIS
MORNING AND THEN WILL EXTEND ALONG THE N GULF COASTLINE AS A
STATIONARY FRONT DISSIPATING BY FRI NIGHT. RETURN FLOW WILL
PERSIST THROUGH SUN NIGHT...HOWEVER A TIGHTER PRESSURE GRADIENT
IS EXPECTED TO INCREASE THE MAX WINDS TO 20 KT.

CARIBBEAN SEA...
ALOFT...A SHORT-WAVE TROUGH IS OVER THE NW CARIBBEAN WHILE THE
NORTHERN PERIPHERY OF AN ANTICYCLONIC CIRCULATION CENTERED OVER
E VENEZUELA COVERS THE REMAINDER BASIN AND PROVIDES WESTERLY
FLOW. A SURFACE TROUGH EXTENDS FROM THE CENTRAL ATLC SW TO
INLAND HISPANIOLA ENHANCING SHOWERS ACROSS THE ISLAND AND
ADJACENT WATERS. SCATTERED SHOWERS ARE WITHIN 80 NM OF THE COAST
OF PANAMA ASSOCIATED WITH AN AREA OF LOW PRESSURE NEAR THE
BOUNDARY WITH COLOMBIA. OTHERWISE...A RELAXED PRESSURE GRADIENT
ACROSS THE REGION SUPPORTS TRADES OF 10-15 KT WITH EXCEPTION OF
THE COLOMBIAN COASTAL WATERS WHERE WINDS ARE UP TO 20 KT. A
TIGHTER PRESSURE GRADIENT IS EXPECTED DURING SAT AND SUN WHICH
WILL INCREASE WINDS UP TO 20 KT ACROSS MUCH OF THE CENTRAL AND
EASTERN CARIBBEAN.

...HISPANIOLA...
SCATTERED SHOWERS CONTINUE ACROSS THE ISLAND BEING GENERATED BY
A SURFACE TROUGH THAT EXTENDS FROM THE CENTRAL ATLC ALONG 28N49W
SW TO 22N61W 19N69W TO CENTRAL HAITI NEAR 18N72W. THE SURFACE
TROUGH WILL SLOWLY PULL AWAY FROM THE ISLAND AND DISSIPATE LATE
FRI MORNING. LOW LEVEL MOISTURE WILL PERSIST THROUGH THE WEEKEND
BRINGING SCATTERED SHOWERS AND POSSIBLE ISOLATED THUNDERSTORMS
TO THE ISLAND MAINLY THROUGH LATE SAT.

ATLANTIC OCEAN...
AN UPPER LEVEL RIDGE EXTENDS FROM THE NE CONUS SE INTO THE SW N
ATLC WATERS AND SUPPORTS A 1018 MB HIGH NEAR 30N72W. FARTHER
EAST OVER THE N CENTRAL ATLC...A MID TO UPPER LEVEL CYCLONIC
CIRCULATION CENTERED NEAR 41N56W SUPPORTS A BROAD ARE OF SURFACE
LOW PRESSURE FROM WHICH A COLD FRONT EXTENDS ALONG 41N48W TO
30N55W 25N68W. NO CONVECTION IS NOTED ASSOCIATED WITH THE FRONT
AT THIS TIME. AHEAD OF THE FRONT...A SURFACE TROUGH EXTENDS FROM
28N49W SW TO 22N62W TO CENTRAL HAITI NEAR 18N72W. SCATTERED
MODERATE CONVECTION AND TSTMS ARE N OF 25N BETWEEN 38W-53W.
ISOLATED SHOWERS ARE WITHIN 160 NM E OF THE TROUGH AXIS FROM 21N-
25N. A BROAD SURFACE RIDGE COVERS THE REMAINDER OF THE E ATLC
ANCHORED BY A 1028 MB HIGH BETWEEN THE CANARY ISLANDS AND THE
AZORES. COLD FRONT WILL MOVE ACROSS THE CENTRAL ATLC AND
DISSIPATE SAT. WEAK SURFACE RIDGE WILL SETTLE ACROSS THE W ATLC
FRI AND MOVE INTO THE CENTRAL ATLC SAT. ANOTHER COLD FRONT WILL
PASS THROUGH THE W ATLC N OF 29N SAT THROUGH SUN NIGHT.

FOR ADDITIONAL INFORMATION PLEASE VISIT
HTTP://WWW.HURRICANES.GOV/MARINE

$$
NR



000
AXNT20 KNHC 250603
TWDAT

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
205 AM EDT FRI APR 25 2014

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL
AMERICA...GULF OF MEXICO...CARIBBEAN SEA...NORTHERN SECTIONS OF
SOUTH AMERICA...AND ATLANTIC OCEAN TO THE AFRICAN COAST FROM THE
EQUATOR TO 32N. THE FOLLOWING INFORMATION IS BASED ON SATELLITE
IMAGERY...WEATHER OBSERVATIONS...RADAR...AND METEOROLOGICAL
ANALYSIS.

BASED ON 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
2345 UTC.

...ITCZ/MONSOON TROUGH...
THE MONSOON TROUGH EXTENDS ACROSS AFRICA INTO THE E TROPICAL
ATLC NEAR 11N15W AND CONTINUES ALONG 06N17W TO 03N22W. THE ITCZ
BEGINS NEAR 03N23W AND CONTINUES ALONG 01S35W TO THE NORTHERN
COAST OF BRAZIL NEAR 02S44W. ISOLATED SHOWERS ARE FROM 02N-05N
BETWEEN 19W-31W. SCATTERED MODERATE CONVECTION IS FROM 0N-03N W
OF 44W.

...DISCUSSION...

GULF OF MEXICO...
WESTERLY FLOW DOMINATES ALOFT AND ADVECTS MOISTURE FROM THE E
PACIFIC INTO THE BASIN. A SHORT-WAVE TROUGH IS MOVING ACROSS THE
MIDDLE AND LOWER MISSISSIPPI VALLEY SUPPORTING A COLD FRONT THAT
EXTENDS FROM ILLINOIS SW TO NW LOUISIANA TO EASTERN TEXAS. LOW
LEVEL MOISTURE CONVERGENCE ALONG THE FRONT IS ENHANCING ISOLATED
SHOWERS OVER THE NW GULF N OF 25N W OF 86W. ADVECTION FOG IS
ALSO NOTED OVER THE NW GULF N OF 27N W OF 93W. OTHERWISE...A
WEAK SURFACE RIDGE DOMINATES ACROSS THE GULF ANCHORED BY A 1016
MB HIGH OVER THE SE GULF NEAR 26N83W. THIS SURFACE PATTERN IS
PROVIDING THE GULF WITH E-SE WIND FLOW RANGING FROM 5-15 KT. THE
TAIL OF THE COLD FRONT WILL MOVE INTO THE NW GULF LATER THIS
MORNING AND THEN WILL EXTEND ALONG THE N GULF COASTLINE AS A
STATIONARY FRONT DISSIPATING BY FRI NIGHT. RETURN FLOW WILL
PERSIST THROUGH SUN NIGHT...HOWEVER A TIGHTER PRESSURE GRADIENT
IS EXPECTED TO INCREASE THE MAX WINDS TO 20 KT.

CARIBBEAN SEA...
ALOFT...A SHORT-WAVE TROUGH IS OVER THE NW CARIBBEAN WHILE THE
NORTHERN PERIPHERY OF AN ANTICYCLONIC CIRCULATION CENTERED OVER
E VENEZUELA COVERS THE REMAINDER BASIN AND PROVIDES WESTERLY
FLOW. A SURFACE TROUGH EXTENDS FROM THE CENTRAL ATLC SW TO
INLAND HISPANIOLA ENHANCING SHOWERS ACROSS THE ISLAND AND
ADJACENT WATERS. SCATTERED SHOWERS ARE WITHIN 80 NM OF THE COAST
OF PANAMA ASSOCIATED WITH AN AREA OF LOW PRESSURE NEAR THE
BOUNDARY WITH COLOMBIA. OTHERWISE...A RELAXED PRESSURE GRADIENT
ACROSS THE REGION SUPPORTS TRADES OF 10-15 KT WITH EXCEPTION OF
THE COLOMBIAN COASTAL WATERS WHERE WINDS ARE UP TO 20 KT. A
TIGHTER PRESSURE GRADIENT IS EXPECTED DURING SAT AND SUN WHICH
WILL INCREASE WINDS UP TO 20 KT ACROSS MUCH OF THE CENTRAL AND
EASTERN CARIBBEAN.

...HISPANIOLA...
SCATTERED SHOWERS CONTINUE ACROSS THE ISLAND BEING GENERATED BY
A SURFACE TROUGH THAT EXTENDS FROM THE CENTRAL ATLC ALONG 28N49W
SW TO 22N61W 19N69W TO CENTRAL HAITI NEAR 18N72W. THE SURFACE
TROUGH WILL SLOWLY PULL AWAY FROM THE ISLAND AND DISSIPATE LATE
FRI MORNING. LOW LEVEL MOISTURE WILL PERSIST THROUGH THE WEEKEND
BRINGING SCATTERED SHOWERS AND POSSIBLE ISOLATED THUNDERSTORMS
TO THE ISLAND MAINLY THROUGH LATE SAT.

ATLANTIC OCEAN...
AN UPPER LEVEL RIDGE EXTENDS FROM THE NE CONUS SE INTO THE SW N
ATLC WATERS AND SUPPORTS A 1018 MB HIGH NEAR 30N72W. FARTHER
EAST OVER THE N CENTRAL ATLC...A MID TO UPPER LEVEL CYCLONIC
CIRCULATION CENTERED NEAR 41N56W SUPPORTS A BROAD ARE OF SURFACE
LOW PRESSURE FROM WHICH A COLD FRONT EXTENDS ALONG 41N48W TO
30N55W 25N68W. NO CONVECTION IS NOTED ASSOCIATED WITH THE FRONT
AT THIS TIME. AHEAD OF THE FRONT...A SURFACE TROUGH EXTENDS FROM
28N49W SW TO 22N62W TO CENTRAL HAITI NEAR 18N72W. SCATTERED
MODERATE CONVECTION AND TSTMS ARE N OF 25N BETWEEN 38W-53W.
ISOLATED SHOWERS ARE WITHIN 160 NM E OF THE TROUGH AXIS FROM 21N-
25N. A BROAD SURFACE RIDGE COVERS THE REMAINDER OF THE E ATLC
ANCHORED BY A 1028 MB HIGH BETWEEN THE CANARY ISLANDS AND THE
AZORES. COLD FRONT WILL MOVE ACROSS THE CENTRAL ATLC AND
DISSIPATE SAT. WEAK SURFACE RIDGE WILL SETTLE ACROSS THE W ATLC
FRI AND MOVE INTO THE CENTRAL ATLC SAT. ANOTHER COLD FRONT WILL
PASS THROUGH THE W ATLC N OF 29N SAT THROUGH SUN NIGHT.

FOR ADDITIONAL INFORMATION PLEASE VISIT
HTTP://WWW.HURRICANES.GOV/MARINE

$$
NR


000
AXPZ20 KNHC 250229
TWDEP

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC FRI APR 25 2014

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND
METEOROLOGICAL ANALYSIS.

BASED ON 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
0245 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

NO MONSOON TROUGH IS PRESENT. ITCZ AXIS EXTENDS FROM 09N89W TO
06N110W TO 03N125W TO BEYOND 02N140W. SCATTERED MODERATE
CONVECTION IS FROM 02N TO 08N BETWEEN 86W AND 92W...AND FROM 03N
TO 08N BETWEEN 95W AND 113W.

...DISCUSSION...

ALOFT...AN UPPER LEVEL TROUGH IS OVER THE NW CORNER N OF 24N W
OF 130W WITH UPPER LEVEL MOISTURE. ANOTHER SMALL UPPER LEVEL
TROUGH IS N OF 20N BETWEEN 105W AND 120W TO INCLUDE OVER BAJA
CALIFORNIA AND NW MEXICO. IN THE DEEP TROPICS...AN UPPER LEVEL
HIGH IS CENTERED NEAR 08N131W. ANOTHER LARGE UPPER LEVEL HIGH IS
CENTERED NEAR 12N100W. UPPER LEVEL DIFFLUENCE S OF THIS CENTER
IS ENHANCING THE CONVECTION OVER THE ITCZ BETWEEN 95W AND 113W.
FURTHER E...THE WESTERN PORTION OF ANOTHER UPPER LEVEL RIDGE IS
E OF 86W TO INCLUDE CENTRAL AMERICA E OF NICARAGUA WITH
CONSIDERABLE UPPER LEVEL MOISTURE.

ON THE SURFACE...A 1028 MB HIGH IS LOCATED NEAR 35N153W.  A
RIDGE AXIS EXTENDS SE ACROSS THE FORECAST WATERS TO NEAR
18N110W. THE PRESSURE GRADIENT BETWEEN THE RIDGE AND LOWER
PRESSURE ASSOCIATED WITH THE ITCZ IS SUPPORTING FRESH TRADES
OVER THE W CENTRAL WATERS FROM 07N TO 18N W OF 120W WITH 8 TO 9
FT SEAS.

FRESH TO STRONG WINDS ARE N OF THE AREA ALONG THE CALIFORNIA
COAST. THESE WINDS ARE HELPING TO SUPPORT NW SEAS AT 8-10 FT
WHICH ARE FEEDING INTO THE WATERS N OF 28N BETWEEN 117W AND
123W. THESE SEAS WILL SUBSIDE TO LESS THAN 8 FT AROUND FRI
AFTERNOON...WITH A NEW SET OF NW SWELL ARRIVING SHORTLY
THEREAFTER AND COVERING THE WATERS N OF 27N BETWEEN 113W AND
132W BY SAT MORNING.

CROSS-EQUATORIAL SOUTHERLY SWELL AT 8-10 FT COVERS THE WATERS
S OF A LINE FROM 03.4S85W TO 00N93W TO 13N110W TO 13N120W TO
10N120W TO 00N130W. THIS SWELL WILL CONTINUE TO PROPAGATE TO THE
N REACHING THE SW COAST OF MEXICO...SOUTHERN GULF OF
CALIFORNIA...AND THE PACIFIC COAST OF THE BAJA CALIFORNIA
PENINSULA LATE TONIGHT INTO EARLY FRI. SEAS OF 8-9 FT WILL COVER
THE AREA S OF A LINE FROM 18N120W TO 18N110W TO 10N95W TO
00N81W...EXCEPT WITHIN 240 NM NE OF GALAPAGOS ISLANDS...FRI
EVENING.

OTHERWISE...EXPECT FAIRLY TRANQUIL CONDITIONS IN THE GULFS OF
TEHUANTEPEC...PAPAGAYO...AND PANAMA THROUGH THE NEXT FEW
DAYS...WITH WINDS OCCASIONALLY REACHING FRESH LEVELS IN PAPAGAYO
DURING PEAK NOCTURNAL DRAINAGE FLOW.

$$
FORMOSA


000
AXPZ20 KNHC 250229
TWDEP

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC FRI APR 25 2014

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND
METEOROLOGICAL ANALYSIS.

BASED ON 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
0245 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

NO MONSOON TROUGH IS PRESENT. ITCZ AXIS EXTENDS FROM 09N89W TO
06N110W TO 03N125W TO BEYOND 02N140W. SCATTERED MODERATE
CONVECTION IS FROM 02N TO 08N BETWEEN 86W AND 92W...AND FROM 03N
TO 08N BETWEEN 95W AND 113W.

...DISCUSSION...

ALOFT...AN UPPER LEVEL TROUGH IS OVER THE NW CORNER N OF 24N W
OF 130W WITH UPPER LEVEL MOISTURE. ANOTHER SMALL UPPER LEVEL
TROUGH IS N OF 20N BETWEEN 105W AND 120W TO INCLUDE OVER BAJA
CALIFORNIA AND NW MEXICO. IN THE DEEP TROPICS...AN UPPER LEVEL
HIGH IS CENTERED NEAR 08N131W. ANOTHER LARGE UPPER LEVEL HIGH IS
CENTERED NEAR 12N100W. UPPER LEVEL DIFFLUENCE S OF THIS CENTER
IS ENHANCING THE CONVECTION OVER THE ITCZ BETWEEN 95W AND 113W.
FURTHER E...THE WESTERN PORTION OF ANOTHER UPPER LEVEL RIDGE IS
E OF 86W TO INCLUDE CENTRAL AMERICA E OF NICARAGUA WITH
CONSIDERABLE UPPER LEVEL MOISTURE.

ON THE SURFACE...A 1028 MB HIGH IS LOCATED NEAR 35N153W.  A
RIDGE AXIS EXTENDS SE ACROSS THE FORECAST WATERS TO NEAR
18N110W. THE PRESSURE GRADIENT BETWEEN THE RIDGE AND LOWER
PRESSURE ASSOCIATED WITH THE ITCZ IS SUPPORTING FRESH TRADES
OVER THE W CENTRAL WATERS FROM 07N TO 18N W OF 120W WITH 8 TO 9
FT SEAS.

FRESH TO STRONG WINDS ARE N OF THE AREA ALONG THE CALIFORNIA
COAST. THESE WINDS ARE HELPING TO SUPPORT NW SEAS AT 8-10 FT
WHICH ARE FEEDING INTO THE WATERS N OF 28N BETWEEN 117W AND
123W. THESE SEAS WILL SUBSIDE TO LESS THAN 8 FT AROUND FRI
AFTERNOON...WITH A NEW SET OF NW SWELL ARRIVING SHORTLY
THEREAFTER AND COVERING THE WATERS N OF 27N BETWEEN 113W AND
132W BY SAT MORNING.

CROSS-EQUATORIAL SOUTHERLY SWELL AT 8-10 FT COVERS THE WATERS
S OF A LINE FROM 03.4S85W TO 00N93W TO 13N110W TO 13N120W TO
10N120W TO 00N130W. THIS SWELL WILL CONTINUE TO PROPAGATE TO THE
N REACHING THE SW COAST OF MEXICO...SOUTHERN GULF OF
CALIFORNIA...AND THE PACIFIC COAST OF THE BAJA CALIFORNIA
PENINSULA LATE TONIGHT INTO EARLY FRI. SEAS OF 8-9 FT WILL COVER
THE AREA S OF A LINE FROM 18N120W TO 18N110W TO 10N95W TO
00N81W...EXCEPT WITHIN 240 NM NE OF GALAPAGOS ISLANDS...FRI
EVENING.

OTHERWISE...EXPECT FAIRLY TRANQUIL CONDITIONS IN THE GULFS OF
TEHUANTEPEC...PAPAGAYO...AND PANAMA THROUGH THE NEXT FEW
DAYS...WITH WINDS OCCASIONALLY REACHING FRESH LEVELS IN PAPAGAYO
DURING PEAK NOCTURNAL DRAINAGE FLOW.

$$
FORMOSA



000
AXNT20 KNHC 242325
TWDAT

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
805 PM EDT THU APR 24 2014

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL
AMERICA...GULF OF MEXICO...CARIBBEAN SEA...NORTHERN SECTIONS OF
SOUTH AMERICA...AND ATLANTIC OCEAN TO THE AFRICAN COAST FROM THE
EQUATOR TO 32N. THE FOLLOWING INFORMATION IS BASED ON SATELLITE
IMAGERY...WEATHER OBSERVATIONS...RADAR...AND METEOROLOGICAL
ANALYSIS.

BASED ON 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
2245 UTC.

...ITCZ/MONSOON TROUGH...
THE MONSOON TROUGH EXTENDS ACROSS AFRICA INTO THE E TROPICAL
ATLC NEAR 12N16W AND CONTINUES ALONG 8N18W TO 5N21W WHERE THE
ITCZ BEGINS AND CONTINUES ALONG 2N26W THEN S OF THE EQUATOR NEAR
35W. A SURFACE TROUGH EXTENDS FROM ACROSS THE PRIME MERIDIAN
NEAR 3N TO 1N9W. SCATTERED MODERATE/ISOLATED STRONG CONVECTION
IS WITHIN 60/75 NM OF LINE FROM 1N44W TO 2N49W.

...DISCUSSION...

GULF OF MEXICO...
UPPER TROUGH MOVING OVER THE LOWER MISSISSIPPI VALLEY IS
SUPPORTING A COLD FRONT THAT IS MOVING ACROSS TEXAS BUT IS NOT
EXPECTED TO ENTER THE GULF WATERS. ISOLATED SHOWERS AHEAD OF THE
FRONT OVER TEXAS ARE MOVING OVER THE FAR NW GULF N OF 27N W OF
93W. AN UPPER RIDGE ALONG 80W FROM CUBA OVER THE W ATLC IS
GIVING THE GULF W TO SW FLOW ALOFT. A WEAK SURFACE RIDGE COVERS
THE GULF ANCHORED BY A WEAK 1016 MB HIGH AT 24/2100 UTC NEAR
29N87W. THE REMAINDER OF THE GULF IS UNDER MOSTLY CLEAR SKIES
THIS EVENING. SURFACE RIDGE WILL PERSIST THROUGH THE WEEKEND.

CARIBBEAN SEA...
BROAD UPPER RIDGE DOMINATES MOST OF THE CARIBBEAN AND INTO THE
W TROPICAL ATLC. A SURFACE TROUGH EXTENDS FROM THE CENTRAL ATLC
TO OVER HISPANIOLA AT 24/2100 UTC GENERATING SCATTERED SHOWERS/
THUNDERSTORMS INLAND OVER HISPANIOLA. THE AFTERNOON SEABREEZE
COUPLED WITH DAYTIME HEATING IS GENERATING SCATTERED SHOWERS/
ISOLATED THUNDERSTORMS INLAND OVER E CUBA E OF 79W. THE TRADE
WINDS ARE GENERATING ISOLATED SHOWERS OVER THE SW CARIBBEAN FROM
10N-13N BETWEEN 76W-82W. THIS IS GIVING THE REMAINDER OF THE
CARIBBEAN TRANQUIL WEATHER THIS EVENING. MODERATE TO LOCALLY
FRESH TRADE WINDS WILL PREVAIL OVER MUCH OF THE CARIBBEAN
THROUGH THE WEEKEND EXCEPT FOR A FRESH TO STRONG BREEZE ACROSS
THE GULF OF HONDURAS SAT NIGHT THROUGH THE FIRST OF THE WEEK.

...HISPANIOLA...
CURRENTLY SCATTERED SHOWERS/THUNDERSTORMS ARE OVER THE DOMINICAN
REPUBLIC AND THE CENTRAL PORTION OF HAITI BEING GENERATED BY A
SURFACE TROUGH THAT EXTENDS FROM THE CENTRAL ATLC ALONG 20N67W
TO 19N72W. BROAD UPPER RIDGE OVER THE CARIBBEAN IS GIVING
HISPANIOLA WESTERLY FLOW ALOFT THAT WILL CONTINUE THROUGH THE
FIRST OF NEXT WEEK. THE SURFACE TROUGH WILL SLOWLY PULL AWAY
FROM THE ISLAND AND DISSIPATE LATER TONIGHT. LOW LEVEL MOISTURE
WILL PERSIST THROUGH THE WEEKEND BRINGING SCATTERED SHOWERS AND
POSSIBLE ISOLATED THUNDERSTORMS TO THE ISLAND MAINLY THROUGH
LATE SAT.

ATLANTIC OCEAN...
A WEAK UPPER RIDGE EXTENDS ALONG 80W FROM CUBA TO BEYOND 32N. A
BROAD UPPER TROUGH COVERS THE REMAINDER OF THE W ATLC TO OVER
THE CENTRAL ATLC SUPPORTING A COLD FRONT THAT AT 24/2100 UTC
EXTENDS THROUGH 32N54W ALONG 28N61W TO 26N67W THEN DISSIPATES TO
26N71W. A REMNANT DISSIPATING STATIONARY FRONT EXTENDS ALONG
32N52W TO 27N53W WHERE A SURFACE TROUGH CONTINUES ALONG 22N61W
20N67W TO OVER HISPANIOLA. THE UPPER RIDGE OVER THE CARIBBEAN/W
TROPICAL ATLC EXTENDS A RIDGE AXIS E OF THE SURFACE ALONG 20N46W
TO BEYOND 32N38W ENHANCING CLUSTERS OF SCATTERED SHOWERS/
ISOLATED THUNDERSTORMS WITHIN 120/150 NM E OF THE SURFACE TROUGH
N OF 22N. A BROAD SURFACE RIDGE COVERS THE REMAINDER OF THE E
ATLC ANCHORED BY A 1028 MB HIGH JUST S OF THE AZORES. COLD FRONT
WILL MOVE ACROSS THE CENTRAL ATLC AND DISSIPATE SAT. A NEARLY
STATIONARY TROUGH WILL DISSIPATE LATER TONIGHT. WEAK SURFACE
RIDGE WILL SETTLE ACROSS THE W ATLC FRI AND MOVE INTO THE
CENTRAL ATLC SAT. ANOTHER COLD FRONT WILL PASS THROUGH THE W
ATLC N OF 29N SAT THROUGH SUN NIGHT.

FOR ADDITIONAL INFORMATION PLEASE VISIT
HTTP://WWW.HURRICANES.GOV/MARINE

$$
PAW



000
AXNT20 KNHC 242325
TWDAT

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
805 PM EDT THU APR 24 2014

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL
AMERICA...GULF OF MEXICO...CARIBBEAN SEA...NORTHERN SECTIONS OF
SOUTH AMERICA...AND ATLANTIC OCEAN TO THE AFRICAN COAST FROM THE
EQUATOR TO 32N. THE FOLLOWING INFORMATION IS BASED ON SATELLITE
IMAGERY...WEATHER OBSERVATIONS...RADAR...AND METEOROLOGICAL
ANALYSIS.

BASED ON 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
2245 UTC.

...ITCZ/MONSOON TROUGH...
THE MONSOON TROUGH EXTENDS ACROSS AFRICA INTO THE E TROPICAL
ATLC NEAR 12N16W AND CONTINUES ALONG 8N18W TO 5N21W WHERE THE
ITCZ BEGINS AND CONTINUES ALONG 2N26W THEN S OF THE EQUATOR NEAR
35W. A SURFACE TROUGH EXTENDS FROM ACROSS THE PRIME MERIDIAN
NEAR 3N TO 1N9W. SCATTERED MODERATE/ISOLATED STRONG CONVECTION
IS WITHIN 60/75 NM OF LINE FROM 1N44W TO 2N49W.

...DISCUSSION...

GULF OF MEXICO...
UPPER TROUGH MOVING OVER THE LOWER MISSISSIPPI VALLEY IS
SUPPORTING A COLD FRONT THAT IS MOVING ACROSS TEXAS BUT IS NOT
EXPECTED TO ENTER THE GULF WATERS. ISOLATED SHOWERS AHEAD OF THE
FRONT OVER TEXAS ARE MOVING OVER THE FAR NW GULF N OF 27N W OF
93W. AN UPPER RIDGE ALONG 80W FROM CUBA OVER THE W ATLC IS
GIVING THE GULF W TO SW FLOW ALOFT. A WEAK SURFACE RIDGE COVERS
THE GULF ANCHORED BY A WEAK 1016 MB HIGH AT 24/2100 UTC NEAR
29N87W. THE REMAINDER OF THE GULF IS UNDER MOSTLY CLEAR SKIES
THIS EVENING. SURFACE RIDGE WILL PERSIST THROUGH THE WEEKEND.

CARIBBEAN SEA...
BROAD UPPER RIDGE DOMINATES MOST OF THE CARIBBEAN AND INTO THE
W TROPICAL ATLC. A SURFACE TROUGH EXTENDS FROM THE CENTRAL ATLC
TO OVER HISPANIOLA AT 24/2100 UTC GENERATING SCATTERED SHOWERS/
THUNDERSTORMS INLAND OVER HISPANIOLA. THE AFTERNOON SEABREEZE
COUPLED WITH DAYTIME HEATING IS GENERATING SCATTERED SHOWERS/
ISOLATED THUNDERSTORMS INLAND OVER E CUBA E OF 79W. THE TRADE
WINDS ARE GENERATING ISOLATED SHOWERS OVER THE SW CARIBBEAN FROM
10N-13N BETWEEN 76W-82W. THIS IS GIVING THE REMAINDER OF THE
CARIBBEAN TRANQUIL WEATHER THIS EVENING. MODERATE TO LOCALLY
FRESH TRADE WINDS WILL PREVAIL OVER MUCH OF THE CARIBBEAN
THROUGH THE WEEKEND EXCEPT FOR A FRESH TO STRONG BREEZE ACROSS
THE GULF OF HONDURAS SAT NIGHT THROUGH THE FIRST OF THE WEEK.

...HISPANIOLA...
CURRENTLY SCATTERED SHOWERS/THUNDERSTORMS ARE OVER THE DOMINICAN
REPUBLIC AND THE CENTRAL PORTION OF HAITI BEING GENERATED BY A
SURFACE TROUGH THAT EXTENDS FROM THE CENTRAL ATLC ALONG 20N67W
TO 19N72W. BROAD UPPER RIDGE OVER THE CARIBBEAN IS GIVING
HISPANIOLA WESTERLY FLOW ALOFT THAT WILL CONTINUE THROUGH THE
FIRST OF NEXT WEEK. THE SURFACE TROUGH WILL SLOWLY PULL AWAY
FROM THE ISLAND AND DISSIPATE LATER TONIGHT. LOW LEVEL MOISTURE
WILL PERSIST THROUGH THE WEEKEND BRINGING SCATTERED SHOWERS AND
POSSIBLE ISOLATED THUNDERSTORMS TO THE ISLAND MAINLY THROUGH
LATE SAT.

ATLANTIC OCEAN...
A WEAK UPPER RIDGE EXTENDS ALONG 80W FROM CUBA TO BEYOND 32N. A
BROAD UPPER TROUGH COVERS THE REMAINDER OF THE W ATLC TO OVER
THE CENTRAL ATLC SUPPORTING A COLD FRONT THAT AT 24/2100 UTC
EXTENDS THROUGH 32N54W ALONG 28N61W TO 26N67W THEN DISSIPATES TO
26N71W. A REMNANT DISSIPATING STATIONARY FRONT EXTENDS ALONG
32N52W TO 27N53W WHERE A SURFACE TROUGH CONTINUES ALONG 22N61W
20N67W TO OVER HISPANIOLA. THE UPPER RIDGE OVER THE CARIBBEAN/W
TROPICAL ATLC EXTENDS A RIDGE AXIS E OF THE SURFACE ALONG 20N46W
TO BEYOND 32N38W ENHANCING CLUSTERS OF SCATTERED SHOWERS/
ISOLATED THUNDERSTORMS WITHIN 120/150 NM E OF THE SURFACE TROUGH
N OF 22N. A BROAD SURFACE RIDGE COVERS THE REMAINDER OF THE E
ATLC ANCHORED BY A 1028 MB HIGH JUST S OF THE AZORES. COLD FRONT
WILL MOVE ACROSS THE CENTRAL ATLC AND DISSIPATE SAT. A NEARLY
STATIONARY TROUGH WILL DISSIPATE LATER TONIGHT. WEAK SURFACE
RIDGE WILL SETTLE ACROSS THE W ATLC FRI AND MOVE INTO THE
CENTRAL ATLC SAT. ANOTHER COLD FRONT WILL PASS THROUGH THE W
ATLC N OF 29N SAT THROUGH SUN NIGHT.

FOR ADDITIONAL INFORMATION PLEASE VISIT
HTTP://WWW.HURRICANES.GOV/MARINE

$$
PAW


000
AXPZ20 KNHC 242121
TWDEP

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC THU APR 24 2014

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND
METEOROLOGICAL ANALYSIS.

BASED ON 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
2100 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

NO MONSOON TROUGH IS PRESENT. ITCZ AXIS EXTENDS FROM 07N81W TO
08N90W TO 06N100W TO 04N120W TO BEYOND 03N140W. SCATTERED
MODERATE ISOLATED STRONG CONVECTION IS FROM 03N TO 09N BETWEEN
85W AND 91W. SCATTERED MODERATE CONVECTION IS FROM 01N TO 07N
BETWEEN 98W AND 112W.

...DISCUSSION...

ALOFT...AN UPPER LEVEL TROUGH IS OVER THE NW CORNER N OF 24N W
OF 130W WITH UPPER LEVEL MOISTURE. ANOTHER SMALL UPPER LEVEL
TROUGH IS N OF 20N BETWEEN 105W AND 120W TO INCLUDE OVER BAJA
CALIFORNIA AND NW MEXICO. IN THE DEEP TROPICS...AN UPPER LEVEL
HIGH IS CENTERED NEAR 07N132W. ANOTHER LARGE UPPER LEVEL HIGH IS
CENTERED NEAR 12N100W. UPPER LEVEL DIFFLUENCE S OF THIS CENTER
IS ENHANCING THE CONVECTION OVER THE ITCZ BETWEEN 98W AND 112W.
FURTHER E...THE WESTERN PORTION OF ANOTHER UPPER LEVEL RIDGE IS
E OF 86W TO INCLUDE CENTRAL AMERICA E OF NICARAGUA WITH
CONSIDERABLE UPPER LEVEL MOISTURE.

ON THE SURFACE...A 1028 MB HIGH IS LOCATED NEAR 35N153W.  A
RIDGE AXIS EXTENDS SE ACROSS THE FORECAST WATERS TO NEAR
18N110W. THE PRESSURE GRADIENT BETWEEN THE RIDGE AND LOWER
PRESSURE ASSOCIATED WITH THE ITCZ TO THE S IS SUPPORTING FRESH
TO STRONG WINDS FROM 09N TO 13N W OF 134W WITH SEAS 9 TO 10 FT.
A LARGER AREA OF MODERATE TO FRESH TRADES SURROUNDS THIS AREA
WITH 8-9 FT SEAS OVER THE W CENTRAL WATERS. THE TRADES WILL
DIMINISH TO MODERATE TO FRESH BY 24 HOURS WITH THE AREA OF 8-9
FT SEAS IN MIXED NE... SW...AND NW SWELL SPREADING EASTWARD TO
110W ACROSS THE CENTRAL WATERS.

FRESH TO STRONG WINDS ARE N OF THE AREA ALONG THE CALIFORNIA
COAST. THESE WINDS ARE HELPING TO SUPPORT NW SEAS AT 8-10 FT
WHICH ARE FEEDING INTO THE WATERS N OF 26N BETWEEN 117W AND
124W. THESE SEAS WILL SUBSIDE TO LESS THAN 8 FT AROUND FRI
AFTERNOON...WITH A NEW SET OF NW SWELL ARRIVING SHORTLY
THEREAFTER AND COVERING THE WATERS N OF 25N BETWEEN 115W AND
132W BY SAT MORNING.

CROSS-EQUATORIAL SOUTHERLY SWELL AT 8-10 FT COVERS THE WATERS
S OF A LINE FROM 03.4S90W TO 10N110W TO 10N120W TO 00N134W. THIS
SWELL WILL CONTINUE TO PROPAGATE TO THE N REACHING THE SW COAST
OF MEXICO...SOUTHERN GULF OF CALIFORNIA...AND THE PACIFIC COAST
OF THE BAJA CALIFORNIA PENINSULA LATE TONIGHT INTO EARLY FRI.
SEAS OF 8-9 FT WILL COVER THE AREA S OF A LINE FROM 15N120W TO
15N110W TO 10N97W TO 00N81W...EXCEPT WITHIN 240 NM NE OF
GALAPAGOS ISLANDS FRI EVENING.

OTHERWISE...EXPECT FAIRLY TRANQUIL CONDITIONS IN THE GULFS OF
TEHUANTEPEC...PAPAGAYO...AND PANAMA THROUGH THE NEXT FEW
DAYS...WITH WINDS OCCASIONALLY REACHING FRESH LEVELS IN PAPAGAYO
DURING PEAK NOCTURNAL DRAINAGE FLOW.

$$
FORMOSA


000
AXPZ20 KNHC 242121
TWDEP

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC THU APR 24 2014

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND
METEOROLOGICAL ANALYSIS.

BASED ON 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
2100 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

NO MONSOON TROUGH IS PRESENT. ITCZ AXIS EXTENDS FROM 07N81W TO
08N90W TO 06N100W TO 04N120W TO BEYOND 03N140W. SCATTERED
MODERATE ISOLATED STRONG CONVECTION IS FROM 03N TO 09N BETWEEN
85W AND 91W. SCATTERED MODERATE CONVECTION IS FROM 01N TO 07N
BETWEEN 98W AND 112W.

...DISCUSSION...

ALOFT...AN UPPER LEVEL TROUGH IS OVER THE NW CORNER N OF 24N W
OF 130W WITH UPPER LEVEL MOISTURE. ANOTHER SMALL UPPER LEVEL
TROUGH IS N OF 20N BETWEEN 105W AND 120W TO INCLUDE OVER BAJA
CALIFORNIA AND NW MEXICO. IN THE DEEP TROPICS...AN UPPER LEVEL
HIGH IS CENTERED NEAR 07N132W. ANOTHER LARGE UPPER LEVEL HIGH IS
CENTERED NEAR 12N100W. UPPER LEVEL DIFFLUENCE S OF THIS CENTER
IS ENHANCING THE CONVECTION OVER THE ITCZ BETWEEN 98W AND 112W.
FURTHER E...THE WESTERN PORTION OF ANOTHER UPPER LEVEL RIDGE IS
E OF 86W TO INCLUDE CENTRAL AMERICA E OF NICARAGUA WITH
CONSIDERABLE UPPER LEVEL MOISTURE.

ON THE SURFACE...A 1028 MB HIGH IS LOCATED NEAR 35N153W.  A
RIDGE AXIS EXTENDS SE ACROSS THE FORECAST WATERS TO NEAR
18N110W. THE PRESSURE GRADIENT BETWEEN THE RIDGE AND LOWER
PRESSURE ASSOCIATED WITH THE ITCZ TO THE S IS SUPPORTING FRESH
TO STRONG WINDS FROM 09N TO 13N W OF 134W WITH SEAS 9 TO 10 FT.
A LARGER AREA OF MODERATE TO FRESH TRADES SURROUNDS THIS AREA
WITH 8-9 FT SEAS OVER THE W CENTRAL WATERS. THE TRADES WILL
DIMINISH TO MODERATE TO FRESH BY 24 HOURS WITH THE AREA OF 8-9
FT SEAS IN MIXED NE... SW...AND NW SWELL SPREADING EASTWARD TO
110W ACROSS THE CENTRAL WATERS.

FRESH TO STRONG WINDS ARE N OF THE AREA ALONG THE CALIFORNIA
COAST. THESE WINDS ARE HELPING TO SUPPORT NW SEAS AT 8-10 FT
WHICH ARE FEEDING INTO THE WATERS N OF 26N BETWEEN 117W AND
124W. THESE SEAS WILL SUBSIDE TO LESS THAN 8 FT AROUND FRI
AFTERNOON...WITH A NEW SET OF NW SWELL ARRIVING SHORTLY
THEREAFTER AND COVERING THE WATERS N OF 25N BETWEEN 115W AND
132W BY SAT MORNING.

CROSS-EQUATORIAL SOUTHERLY SWELL AT 8-10 FT COVERS THE WATERS
S OF A LINE FROM 03.4S90W TO 10N110W TO 10N120W TO 00N134W. THIS
SWELL WILL CONTINUE TO PROPAGATE TO THE N REACHING THE SW COAST
OF MEXICO...SOUTHERN GULF OF CALIFORNIA...AND THE PACIFIC COAST
OF THE BAJA CALIFORNIA PENINSULA LATE TONIGHT INTO EARLY FRI.
SEAS OF 8-9 FT WILL COVER THE AREA S OF A LINE FROM 15N120W TO
15N110W TO 10N97W TO 00N81W...EXCEPT WITHIN 240 NM NE OF
GALAPAGOS ISLANDS FRI EVENING.

OTHERWISE...EXPECT FAIRLY TRANQUIL CONDITIONS IN THE GULFS OF
TEHUANTEPEC...PAPAGAYO...AND PANAMA THROUGH THE NEXT FEW
DAYS...WITH WINDS OCCASIONALLY REACHING FRESH LEVELS IN PAPAGAYO
DURING PEAK NOCTURNAL DRAINAGE FLOW.

$$
FORMOSA


000
AXPZ20 KNHC 242121
TWDEP

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC THU APR 24 2014

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND
METEOROLOGICAL ANALYSIS.

BASED ON 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
2100 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

NO MONSOON TROUGH IS PRESENT. ITCZ AXIS EXTENDS FROM 07N81W TO
08N90W TO 06N100W TO 04N120W TO BEYOND 03N140W. SCATTERED
MODERATE ISOLATED STRONG CONVECTION IS FROM 03N TO 09N BETWEEN
85W AND 91W. SCATTERED MODERATE CONVECTION IS FROM 01N TO 07N
BETWEEN 98W AND 112W.

...DISCUSSION...

ALOFT...AN UPPER LEVEL TROUGH IS OVER THE NW CORNER N OF 24N W
OF 130W WITH UPPER LEVEL MOISTURE. ANOTHER SMALL UPPER LEVEL
TROUGH IS N OF 20N BETWEEN 105W AND 120W TO INCLUDE OVER BAJA
CALIFORNIA AND NW MEXICO. IN THE DEEP TROPICS...AN UPPER LEVEL
HIGH IS CENTERED NEAR 07N132W. ANOTHER LARGE UPPER LEVEL HIGH IS
CENTERED NEAR 12N100W. UPPER LEVEL DIFFLUENCE S OF THIS CENTER
IS ENHANCING THE CONVECTION OVER THE ITCZ BETWEEN 98W AND 112W.
FURTHER E...THE WESTERN PORTION OF ANOTHER UPPER LEVEL RIDGE IS
E OF 86W TO INCLUDE CENTRAL AMERICA E OF NICARAGUA WITH
CONSIDERABLE UPPER LEVEL MOISTURE.

ON THE SURFACE...A 1028 MB HIGH IS LOCATED NEAR 35N153W.  A
RIDGE AXIS EXTENDS SE ACROSS THE FORECAST WATERS TO NEAR
18N110W. THE PRESSURE GRADIENT BETWEEN THE RIDGE AND LOWER
PRESSURE ASSOCIATED WITH THE ITCZ TO THE S IS SUPPORTING FRESH
TO STRONG WINDS FROM 09N TO 13N W OF 134W WITH SEAS 9 TO 10 FT.
A LARGER AREA OF MODERATE TO FRESH TRADES SURROUNDS THIS AREA
WITH 8-9 FT SEAS OVER THE W CENTRAL WATERS. THE TRADES WILL
DIMINISH TO MODERATE TO FRESH BY 24 HOURS WITH THE AREA OF 8-9
FT SEAS IN MIXED NE... SW...AND NW SWELL SPREADING EASTWARD TO
110W ACROSS THE CENTRAL WATERS.

FRESH TO STRONG WINDS ARE N OF THE AREA ALONG THE CALIFORNIA
COAST. THESE WINDS ARE HELPING TO SUPPORT NW SEAS AT 8-10 FT
WHICH ARE FEEDING INTO THE WATERS N OF 26N BETWEEN 117W AND
124W. THESE SEAS WILL SUBSIDE TO LESS THAN 8 FT AROUND FRI
AFTERNOON...WITH A NEW SET OF NW SWELL ARRIVING SHORTLY
THEREAFTER AND COVERING THE WATERS N OF 25N BETWEEN 115W AND
132W BY SAT MORNING.

CROSS-EQUATORIAL SOUTHERLY SWELL AT 8-10 FT COVERS THE WATERS
S OF A LINE FROM 03.4S90W TO 10N110W TO 10N120W TO 00N134W. THIS
SWELL WILL CONTINUE TO PROPAGATE TO THE N REACHING THE SW COAST
OF MEXICO...SOUTHERN GULF OF CALIFORNIA...AND THE PACIFIC COAST
OF THE BAJA CALIFORNIA PENINSULA LATE TONIGHT INTO EARLY FRI.
SEAS OF 8-9 FT WILL COVER THE AREA S OF A LINE FROM 15N120W TO
15N110W TO 10N97W TO 00N81W...EXCEPT WITHIN 240 NM NE OF
GALAPAGOS ISLANDS FRI EVENING.

OTHERWISE...EXPECT FAIRLY TRANQUIL CONDITIONS IN THE GULFS OF
TEHUANTEPEC...PAPAGAYO...AND PANAMA THROUGH THE NEXT FEW
DAYS...WITH WINDS OCCASIONALLY REACHING FRESH LEVELS IN PAPAGAYO
DURING PEAK NOCTURNAL DRAINAGE FLOW.

$$
FORMOSA


000
AXPZ20 KNHC 242121
TWDEP

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC THU APR 24 2014

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND
METEOROLOGICAL ANALYSIS.

BASED ON 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
2100 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

NO MONSOON TROUGH IS PRESENT. ITCZ AXIS EXTENDS FROM 07N81W TO
08N90W TO 06N100W TO 04N120W TO BEYOND 03N140W. SCATTERED
MODERATE ISOLATED STRONG CONVECTION IS FROM 03N TO 09N BETWEEN
85W AND 91W. SCATTERED MODERATE CONVECTION IS FROM 01N TO 07N
BETWEEN 98W AND 112W.

...DISCUSSION...

ALOFT...AN UPPER LEVEL TROUGH IS OVER THE NW CORNER N OF 24N W
OF 130W WITH UPPER LEVEL MOISTURE. ANOTHER SMALL UPPER LEVEL
TROUGH IS N OF 20N BETWEEN 105W AND 120W TO INCLUDE OVER BAJA
CALIFORNIA AND NW MEXICO. IN THE DEEP TROPICS...AN UPPER LEVEL
HIGH IS CENTERED NEAR 07N132W. ANOTHER LARGE UPPER LEVEL HIGH IS
CENTERED NEAR 12N100W. UPPER LEVEL DIFFLUENCE S OF THIS CENTER
IS ENHANCING THE CONVECTION OVER THE ITCZ BETWEEN 98W AND 112W.
FURTHER E...THE WESTERN PORTION OF ANOTHER UPPER LEVEL RIDGE IS
E OF 86W TO INCLUDE CENTRAL AMERICA E OF NICARAGUA WITH
CONSIDERABLE UPPER LEVEL MOISTURE.

ON THE SURFACE...A 1028 MB HIGH IS LOCATED NEAR 35N153W.  A
RIDGE AXIS EXTENDS SE ACROSS THE FORECAST WATERS TO NEAR
18N110W. THE PRESSURE GRADIENT BETWEEN THE RIDGE AND LOWER
PRESSURE ASSOCIATED WITH THE ITCZ TO THE S IS SUPPORTING FRESH
TO STRONG WINDS FROM 09N TO 13N W OF 134W WITH SEAS 9 TO 10 FT.
A LARGER AREA OF MODERATE TO FRESH TRADES SURROUNDS THIS AREA
WITH 8-9 FT SEAS OVER THE W CENTRAL WATERS. THE TRADES WILL
DIMINISH TO MODERATE TO FRESH BY 24 HOURS WITH THE AREA OF 8-9
FT SEAS IN MIXED NE... SW...AND NW SWELL SPREADING EASTWARD TO
110W ACROSS THE CENTRAL WATERS.

FRESH TO STRONG WINDS ARE N OF THE AREA ALONG THE CALIFORNIA
COAST. THESE WINDS ARE HELPING TO SUPPORT NW SEAS AT 8-10 FT
WHICH ARE FEEDING INTO THE WATERS N OF 26N BETWEEN 117W AND
124W. THESE SEAS WILL SUBSIDE TO LESS THAN 8 FT AROUND FRI
AFTERNOON...WITH A NEW SET OF NW SWELL ARRIVING SHORTLY
THEREAFTER AND COVERING THE WATERS N OF 25N BETWEEN 115W AND
132W BY SAT MORNING.

CROSS-EQUATORIAL SOUTHERLY SWELL AT 8-10 FT COVERS THE WATERS
S OF A LINE FROM 03.4S90W TO 10N110W TO 10N120W TO 00N134W. THIS
SWELL WILL CONTINUE TO PROPAGATE TO THE N REACHING THE SW COAST
OF MEXICO...SOUTHERN GULF OF CALIFORNIA...AND THE PACIFIC COAST
OF THE BAJA CALIFORNIA PENINSULA LATE TONIGHT INTO EARLY FRI.
SEAS OF 8-9 FT WILL COVER THE AREA S OF A LINE FROM 15N120W TO
15N110W TO 10N97W TO 00N81W...EXCEPT WITHIN 240 NM NE OF
GALAPAGOS ISLANDS FRI EVENING.

OTHERWISE...EXPECT FAIRLY TRANQUIL CONDITIONS IN THE GULFS OF
TEHUANTEPEC...PAPAGAYO...AND PANAMA THROUGH THE NEXT FEW
DAYS...WITH WINDS OCCASIONALLY REACHING FRESH LEVELS IN PAPAGAYO
DURING PEAK NOCTURNAL DRAINAGE FLOW.

$$
FORMOSA


000
AXNT20 KNHC 241804
TWDAT

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
205 PM EST THU APR 24 2014

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL
AMERICA...GULF OF MEXICO...CARIBBEAN SEA...NORTHERN SECTIONS OF
SOUTH AMERICA...AND ATLANTIC OCEAN TO THE AFRICAN COAST FROM THE
EQUATOR TO 32N. THE FOLLOWING INFORMATION IS BASED ON SATELLITE
IMAGERY...WEATHER OBSERVATIONS...RADAR...AND METEOROLOGICAL
ANALYSIS.

BASED ON 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
1745 UTC.

...THE ITCZ/THE MONSOON TROUGH...

THE MONSOON TROUGH PASSES THROUGH COASTAL SECTIONS OF SENEGAL
NEAR 14N17W TO 7N19W TO 5N22W. THE ITCZ CONTINUES FROM 5N22W TO
1N30W...CROSSING THE EQUATOR ALONG 35W...TO 1S42W. CONVECTIVE
PRECIPITATION...NUMEROUS STRONG FROM 1N TO 3N BETWEEN 43W AND
50W. ISOLATED MODERATE FROM 3N TO 5N BETWEEN 18W AND 26W...AND
FROM THE EQUATOR TO 3N BETWEEN 39W AND 43W.

A SURFACE TROUGH IS ALONG 3N1W 2N8W. CONVECTIVE PRECIPITATION...
EARLIER CONVECTIVE PRECIPITATION HAS BEEN DISSIPATING DURING THE
LAST 4 TO 6 HOUR OR SO...TO THE SOUTH OF 5N TO THE EAST OF 10W.
BROKEN TO OVERCAST MULTILAYERED CONVECTIVE DEBRIS CLOUDS AND
POSSIBLE REMAINING RAINSHOWERS ARE IN THIS AREA.

...DISCUSSION...

...THE GULF OF MEXICO...

UPPER LEVEL SOUTHWESTERLY WIND FLOW IS MOVING ACROSS THE GULF OF
MEXICO. THIS WIND FLOW IS IN ADVANCE OF A DEEP LAYER TROUGH THAT
CURRENTLY IS MOVING THROUGH THE CENTRAL U.S.A.

FOR THE OFFSHORE OIL PLATFORM SITES THAT ARE TO THE NORTH OF 27N
TO THE WEST OF 87W/88W...

LOW CLOUD CEILINGS ARE BEING REPORTED AT THE FOLLOWING ICAO
STATIONS...KMZG...KBQX...KGUL...KHQI...AND KMDJ. ICAO STATION
KBBF IS REPORTING A VISIBILITY OF 3 MILES OR LESS WITH FOG/HAZE.
FAIR SKIES/CLEAR SKIES AT OR LOWER THAN 12000 FEET ARE BEING
REPORTED ELSEWHERE.

...THE CARIBBEAN SEA...

A SURFACE TROUGH EXTENDS FROM 26N61W IN THE ATLANTIC OCEAN...TO
21N70W... THROUGH THE WINDWARD PASSAGE TO 19N81W IN THE
NORTHWESTERN CORNER OF THE CARIBBEAN SEA. CONVECTIVE
PRECIPITATION...RAINSHOWERS ARE POSSIBLE IN THE CARIBBEAN SEA
AND THE WATERS AROUND THE BAHAMAS AND CUBA FROM 18N TO 22N
BETWEEN THE MONA PASSAGE AND YUCATAN CHANNEL.

AN UPPER LEVEL RIDGE EXTENDS FROM COASTAL SECTIONS OF
VENEZUELA...INTO THE WEST CENTRAL CARIBBEAN SEA...THROUGH COSTA
RICA AND NICARAGUA...INTO THE EASTERN PACIFIC OCEAN. HIGH LEVEL
MOISTURE IS CURVING FROM CENTRAL AMERICA AND COLOMBIA AND
VENEZUELA...INTO THE CARIBBEAN SEA.

BROKEN TO OVERCAST LOW LEVEL AND MIDDLE LEVEL CLOUDS AND
POSSIBLE RAINSHOWERS ARE PRIMARILY...FROM 8N TO 13N BETWEEN 60W
AND 64W IN THE SOUTHEASTERN CORNER OF THE AREA...AND TO THE
SOUTH OF 14N TO THE WEST OF 74W IN THE SOUTHWESTERN CORNER OF
THE AREA...IN SURFACE TRADEWIND FLOW.

THE 24-HOUR RAINFALL TOTAL IN INCHES FOR THE PERIOD ENDING AT
24/1200 UTC...ACCORDING TO THE PAN AMERICAN TEMPERATURE AND
PRECIPITATION TABLES...MIATPTPAN/SXCA01 KNHC...IS 0.26 IN
ST. THOMAS...AND 0.10 IN TRINIDAD.

...HISPANIOLA...

A SURFACE TROUGH EXTENDS FROM 26N61W IN THE ATLANTIC OCEAN...TO
21N70W... THROUGH THE WINDWARD PASSAGE TO 19N81W IN THE
NORTHWESTERN CORNER OF THE CARIBBEAN SEA. CONVECTIVE
PRECIPITATION...RAINSHOWERS ARE POSSIBLE IN THE CARIBBEAN SEA
AND THE WATERS AROUND THE BAHAMAS AND CUBA FROM 18N TO 22N
BETWEEN THE MONA PASSAGE AND YUCATAN CHANNEL.

AN UPPER LEVEL RIDGE EXTENDS FROM COASTAL SECTIONS OF
VENEZUELA...INTO THE WEST CENTRAL CARIBBEAN SEA...THROUGH COSTA
RICA AND NICARAGUA...INTO THE EASTERN PACIFIC OCEAN. HIGH LEVEL
MOISTURE IS CURVING FROM CENTRAL AMERICA AND COLOMBIA AND
VENEZUELA...INTO THE CARIBBEAN SEA.

CONDITIONS AND CURRENT WEATHER FOR THE DOMINICAN REPUBLIC...FEW
LOW LEVEL CLOUDS AND A HIGH LEVEL CLOUD CEILING COVER
BARAHONA...SANTO DOMINGO...AND PUNTA CANA. A LOW CLOUD CEILING
COVERS LA ROMANA. SCATTERED LOW LEVEL CLOUDS...CUMULONIMBUS...
ARE BEING OBSERVED IN SANTIAGO. SCATTERED LOW LEVEL CLOUDS ARE
BEING REPORTED IN PUERTO PLATA.

...THE ATLANTIC OCEAN...

A MIDDLE LEVEL TO UPPER LEVEL TROUGH PASSES THROUGH 32N59W TO
24N69W. A COLD FRONT PASSES THROUGH 32N59W TO 28N69W. A PRE-
FRONTAL TROUGH IS ALONG 29N63W 25N71W. BROAD MIDDLE LEVEL TO
UPPER LEVEL CYCLONIC WIND FLOW...AND COMPARATIVELY DRIER AIR IN
SUBSIDENCE...APPARENT IN WATER VAPOR IMAGERY...COVER THE AREA
THAT IS TO THE NORTHWEST AND NORTH OF THE LINE THAT PASSES
THROUGH 32N47W 24N60W 24N77W. A LINGERING STATIONARY FRONT
CONTINUES ALONG 32N50W TO 31N51W. A DISSIPATING STATIONARY FRONT
CONTINUES FROM 31N51W TO 27N56W AND 26N61W. A SURFACE TROUGH
CONTINUES FROM 26N61W TO 21N70W... THROUGH THE WINDWARD PASSAGE
TO 19N81W IN THE NORTHWESTERN CORNER OF THE CARIBBEAN SEA.
CONVECTIVE PRECIPITATION...SCATTERED MODERATE TO ISOLATED STRONG
WITHIN 30 NM TO 60 NM ON EITHER SIDE OF THE LINE THAT PASSES
THROUGH 32N47W...TO 29N46W...TO 27N52W TO 24N59W. RAINSHOWERS
ARE POSSIBLE ELSEWHERE IN THE ATLANTIC OCEAN FROM 20N TO 24N
BETWEEN 60W AND 68W...AND IN THE CARIBBEAN SEA AND THE WATERS
AROUND THE BAHAMAS AND CUBA FROM 18N TO 22N BETWEEN THE MONA
PASSAGE AND YUCATAN CHANNEL. SURFACE ANTICYCLONIC WIND FLOW
COVERS THE AREA THAT IS TO THE NORTH OF CUBA BETWEEN 70W AND
FLORIDA.

THE 24-HOUR RAINFALL TOTAL IN INCHES FOR THE PERIOD ENDING AT
24/1200 UTC...ACCORDING TO THE PAN AMERICAN TEMPERATURE AND
PRECIPITATION TABLES...MIATPTPAN/SXCA01 KNHC...IS 0.54 IN
BERMUDA.

REMNANTS OF A MIDDLE LEVEL TO UPPER LEVEL TROUGH ARE ALONG
32N24W 24N27W 12N45W. COMPARATIVELY DRIER AIR IN SUBSIDENCE...
APPARENT IN WATER VAPOR IMAGERY...IS FROM 7N TO 20N BETWEEN 35W
AND 60W.

A 1029 MB HIGH PRESSURE CENTER IS NEAR 35N26W. A SURFACE RIDGE
EXTENDS FROM THE HIGH CENTER THROUGH 32N31W 27N35W 23N44W...INTO
THE EASTERN CARIBBEAN SEA NEAR 16N65W. ANTICYCLONIC WIND FLOW
COVERS THE ATLANTIC OCEAN AND THE CARIBBEAN SEA TO THE NORTH OF
10N BETWEEN AFRICA AND THE LINE 32N48W 20N60W 15N67W.

PLEASE READ THE HIGH SEAS FORECAST...MIAHSFAT2/FZNT02 KNHC...FOR
MORE DETAILS ABOUT...A COLD FRONT FROM 31N60W TO 28N66W TO
28N72W. N OF 29N E OF FRONT TO 56W SW TO W WINDS 20 TO 25 KT.
SEAS 8 FT. N OF 29N W OF FRONT TO 68W W TO NW WINDS 20 TO 25 KT.
SEAS TO 10 FT IN NW SWELL. A SECOND AREA OF CONCERN CONSISTS
OF...N OF 27N BETWEEN 45W AND 52W S TO SW WINDS 20 TO 25 KT.
SEAS TO 9 FT. A THIRD AREA OF CONCERN CONSISTS OF...S OF 16N E
OF 51W WINDS 20 KT OR LESS. SEAS TO 8 FT IN NE SWELL. A FOURTH
AREA OF CONCERN CONSISTS OF...FROM 16N TO 26N E OF 40W WINDS 20
KT OR LESS. SEAS TO 8 FT IN N SWELL.

FOR ADDITIONAL INFORMATION PLEASE VISIT
HTTP://WWW.HURRICANES.GOV/MARINE

$$
MT



000
AXNT20 KNHC 241804
TWDAT

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
205 PM EST THU APR 24 2014

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL
AMERICA...GULF OF MEXICO...CARIBBEAN SEA...NORTHERN SECTIONS OF
SOUTH AMERICA...AND ATLANTIC OCEAN TO THE AFRICAN COAST FROM THE
EQUATOR TO 32N. THE FOLLOWING INFORMATION IS BASED ON SATELLITE
IMAGERY...WEATHER OBSERVATIONS...RADAR...AND METEOROLOGICAL
ANALYSIS.

BASED ON 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
1745 UTC.

...THE ITCZ/THE MONSOON TROUGH...

THE MONSOON TROUGH PASSES THROUGH COASTAL SECTIONS OF SENEGAL
NEAR 14N17W TO 7N19W TO 5N22W. THE ITCZ CONTINUES FROM 5N22W TO
1N30W...CROSSING THE EQUATOR ALONG 35W...TO 1S42W. CONVECTIVE
PRECIPITATION...NUMEROUS STRONG FROM 1N TO 3N BETWEEN 43W AND
50W. ISOLATED MODERATE FROM 3N TO 5N BETWEEN 18W AND 26W...AND
FROM THE EQUATOR TO 3N BETWEEN 39W AND 43W.

A SURFACE TROUGH IS ALONG 3N1W 2N8W. CONVECTIVE PRECIPITATION...
EARLIER CONVECTIVE PRECIPITATION HAS BEEN DISSIPATING DURING THE
LAST 4 TO 6 HOUR OR SO...TO THE SOUTH OF 5N TO THE EAST OF 10W.
BROKEN TO OVERCAST MULTILAYERED CONVECTIVE DEBRIS CLOUDS AND
POSSIBLE REMAINING RAINSHOWERS ARE IN THIS AREA.

...DISCUSSION...

...THE GULF OF MEXICO...

UPPER LEVEL SOUTHWESTERLY WIND FLOW IS MOVING ACROSS THE GULF OF
MEXICO. THIS WIND FLOW IS IN ADVANCE OF A DEEP LAYER TROUGH THAT
CURRENTLY IS MOVING THROUGH THE CENTRAL U.S.A.

FOR THE OFFSHORE OIL PLATFORM SITES THAT ARE TO THE NORTH OF 27N
TO THE WEST OF 87W/88W...

LOW CLOUD CEILINGS ARE BEING REPORTED AT THE FOLLOWING ICAO
STATIONS...KMZG...KBQX...KGUL...KHQI...AND KMDJ. ICAO STATION
KBBF IS REPORTING A VISIBILITY OF 3 MILES OR LESS WITH FOG/HAZE.
FAIR SKIES/CLEAR SKIES AT OR LOWER THAN 12000 FEET ARE BEING
REPORTED ELSEWHERE.

...THE CARIBBEAN SEA...

A SURFACE TROUGH EXTENDS FROM 26N61W IN THE ATLANTIC OCEAN...TO
21N70W... THROUGH THE WINDWARD PASSAGE TO 19N81W IN THE
NORTHWESTERN CORNER OF THE CARIBBEAN SEA. CONVECTIVE
PRECIPITATION...RAINSHOWERS ARE POSSIBLE IN THE CARIBBEAN SEA
AND THE WATERS AROUND THE BAHAMAS AND CUBA FROM 18N TO 22N
BETWEEN THE MONA PASSAGE AND YUCATAN CHANNEL.

AN UPPER LEVEL RIDGE EXTENDS FROM COASTAL SECTIONS OF
VENEZUELA...INTO THE WEST CENTRAL CARIBBEAN SEA...THROUGH COSTA
RICA AND NICARAGUA...INTO THE EASTERN PACIFIC OCEAN. HIGH LEVEL
MOISTURE IS CURVING FROM CENTRAL AMERICA AND COLOMBIA AND
VENEZUELA...INTO THE CARIBBEAN SEA.

BROKEN TO OVERCAST LOW LEVEL AND MIDDLE LEVEL CLOUDS AND
POSSIBLE RAINSHOWERS ARE PRIMARILY...FROM 8N TO 13N BETWEEN 60W
AND 64W IN THE SOUTHEASTERN CORNER OF THE AREA...AND TO THE
SOUTH OF 14N TO THE WEST OF 74W IN THE SOUTHWESTERN CORNER OF
THE AREA...IN SURFACE TRADEWIND FLOW.

THE 24-HOUR RAINFALL TOTAL IN INCHES FOR THE PERIOD ENDING AT
24/1200 UTC...ACCORDING TO THE PAN AMERICAN TEMPERATURE AND
PRECIPITATION TABLES...MIATPTPAN/SXCA01 KNHC...IS 0.26 IN
ST. THOMAS...AND 0.10 IN TRINIDAD.

...HISPANIOLA...

A SURFACE TROUGH EXTENDS FROM 26N61W IN THE ATLANTIC OCEAN...TO
21N70W... THROUGH THE WINDWARD PASSAGE TO 19N81W IN THE
NORTHWESTERN CORNER OF THE CARIBBEAN SEA. CONVECTIVE
PRECIPITATION...RAINSHOWERS ARE POSSIBLE IN THE CARIBBEAN SEA
AND THE WATERS AROUND THE BAHAMAS AND CUBA FROM 18N TO 22N
BETWEEN THE MONA PASSAGE AND YUCATAN CHANNEL.

AN UPPER LEVEL RIDGE EXTENDS FROM COASTAL SECTIONS OF
VENEZUELA...INTO THE WEST CENTRAL CARIBBEAN SEA...THROUGH COSTA
RICA AND NICARAGUA...INTO THE EASTERN PACIFIC OCEAN. HIGH LEVEL
MOISTURE IS CURVING FROM CENTRAL AMERICA AND COLOMBIA AND
VENEZUELA...INTO THE CARIBBEAN SEA.

CONDITIONS AND CURRENT WEATHER FOR THE DOMINICAN REPUBLIC...FEW
LOW LEVEL CLOUDS AND A HIGH LEVEL CLOUD CEILING COVER
BARAHONA...SANTO DOMINGO...AND PUNTA CANA. A LOW CLOUD CEILING
COVERS LA ROMANA. SCATTERED LOW LEVEL CLOUDS...CUMULONIMBUS...
ARE BEING OBSERVED IN SANTIAGO. SCATTERED LOW LEVEL CLOUDS ARE
BEING REPORTED IN PUERTO PLATA.

...THE ATLANTIC OCEAN...

A MIDDLE LEVEL TO UPPER LEVEL TROUGH PASSES THROUGH 32N59W TO
24N69W. A COLD FRONT PASSES THROUGH 32N59W TO 28N69W. A PRE-
FRONTAL TROUGH IS ALONG 29N63W 25N71W. BROAD MIDDLE LEVEL TO
UPPER LEVEL CYCLONIC WIND FLOW...AND COMPARATIVELY DRIER AIR IN
SUBSIDENCE...APPARENT IN WATER VAPOR IMAGERY...COVER THE AREA
THAT IS TO THE NORTHWEST AND NORTH OF THE LINE THAT PASSES
THROUGH 32N47W 24N60W 24N77W. A LINGERING STATIONARY FRONT
CONTINUES ALONG 32N50W TO 31N51W. A DISSIPATING STATIONARY FRONT
CONTINUES FROM 31N51W TO 27N56W AND 26N61W. A SURFACE TROUGH
CONTINUES FROM 26N61W TO 21N70W... THROUGH THE WINDWARD PASSAGE
TO 19N81W IN THE NORTHWESTERN CORNER OF THE CARIBBEAN SEA.
CONVECTIVE PRECIPITATION...SCATTERED MODERATE TO ISOLATED STRONG
WITHIN 30 NM TO 60 NM ON EITHER SIDE OF THE LINE THAT PASSES
THROUGH 32N47W...TO 29N46W...TO 27N52W TO 24N59W. RAINSHOWERS
ARE POSSIBLE ELSEWHERE IN THE ATLANTIC OCEAN FROM 20N TO 24N
BETWEEN 60W AND 68W...AND IN THE CARIBBEAN SEA AND THE WATERS
AROUND THE BAHAMAS AND CUBA FROM 18N TO 22N BETWEEN THE MONA
PASSAGE AND YUCATAN CHANNEL. SURFACE ANTICYCLONIC WIND FLOW
COVERS THE AREA THAT IS TO THE NORTH OF CUBA BETWEEN 70W AND
FLORIDA.

THE 24-HOUR RAINFALL TOTAL IN INCHES FOR THE PERIOD ENDING AT
24/1200 UTC...ACCORDING TO THE PAN AMERICAN TEMPERATURE AND
PRECIPITATION TABLES...MIATPTPAN/SXCA01 KNHC...IS 0.54 IN
BERMUDA.

REMNANTS OF A MIDDLE LEVEL TO UPPER LEVEL TROUGH ARE ALONG
32N24W 24N27W 12N45W. COMPARATIVELY DRIER AIR IN SUBSIDENCE...
APPARENT IN WATER VAPOR IMAGERY...IS FROM 7N TO 20N BETWEEN 35W
AND 60W.

A 1029 MB HIGH PRESSURE CENTER IS NEAR 35N26W. A SURFACE RIDGE
EXTENDS FROM THE HIGH CENTER THROUGH 32N31W 27N35W 23N44W...INTO
THE EASTERN CARIBBEAN SEA NEAR 16N65W. ANTICYCLONIC WIND FLOW
COVERS THE ATLANTIC OCEAN AND THE CARIBBEAN SEA TO THE NORTH OF
10N BETWEEN AFRICA AND THE LINE 32N48W 20N60W 15N67W.

PLEASE READ THE HIGH SEAS FORECAST...MIAHSFAT2/FZNT02 KNHC...FOR
MORE DETAILS ABOUT...A COLD FRONT FROM 31N60W TO 28N66W TO
28N72W. N OF 29N E OF FRONT TO 56W SW TO W WINDS 20 TO 25 KT.
SEAS 8 FT. N OF 29N W OF FRONT TO 68W W TO NW WINDS 20 TO 25 KT.
SEAS TO 10 FT IN NW SWELL. A SECOND AREA OF CONCERN CONSISTS
OF...N OF 27N BETWEEN 45W AND 52W S TO SW WINDS 20 TO 25 KT.
SEAS TO 9 FT. A THIRD AREA OF CONCERN CONSISTS OF...S OF 16N E
OF 51W WINDS 20 KT OR LESS. SEAS TO 8 FT IN NE SWELL. A FOURTH
AREA OF CONCERN CONSISTS OF...FROM 16N TO 26N E OF 40W WINDS 20
KT OR LESS. SEAS TO 8 FT IN N SWELL.

FOR ADDITIONAL INFORMATION PLEASE VISIT
HTTP://WWW.HURRICANES.GOV/MARINE

$$
MT



000
AXNT20 KNHC 241804
TWDAT

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
205 PM EST THU APR 24 2014

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL
AMERICA...GULF OF MEXICO...CARIBBEAN SEA...NORTHERN SECTIONS OF
SOUTH AMERICA...AND ATLANTIC OCEAN TO THE AFRICAN COAST FROM THE
EQUATOR TO 32N. THE FOLLOWING INFORMATION IS BASED ON SATELLITE
IMAGERY...WEATHER OBSERVATIONS...RADAR...AND METEOROLOGICAL
ANALYSIS.

BASED ON 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
1745 UTC.

...THE ITCZ/THE MONSOON TROUGH...

THE MONSOON TROUGH PASSES THROUGH COASTAL SECTIONS OF SENEGAL
NEAR 14N17W TO 7N19W TO 5N22W. THE ITCZ CONTINUES FROM 5N22W TO
1N30W...CROSSING THE EQUATOR ALONG 35W...TO 1S42W. CONVECTIVE
PRECIPITATION...NUMEROUS STRONG FROM 1N TO 3N BETWEEN 43W AND
50W. ISOLATED MODERATE FROM 3N TO 5N BETWEEN 18W AND 26W...AND
FROM THE EQUATOR TO 3N BETWEEN 39W AND 43W.

A SURFACE TROUGH IS ALONG 3N1W 2N8W. CONVECTIVE PRECIPITATION...
EARLIER CONVECTIVE PRECIPITATION HAS BEEN DISSIPATING DURING THE
LAST 4 TO 6 HOUR OR SO...TO THE SOUTH OF 5N TO THE EAST OF 10W.
BROKEN TO OVERCAST MULTILAYERED CONVECTIVE DEBRIS CLOUDS AND
POSSIBLE REMAINING RAINSHOWERS ARE IN THIS AREA.

...DISCUSSION...

...THE GULF OF MEXICO...

UPPER LEVEL SOUTHWESTERLY WIND FLOW IS MOVING ACROSS THE GULF OF
MEXICO. THIS WIND FLOW IS IN ADVANCE OF A DEEP LAYER TROUGH THAT
CURRENTLY IS MOVING THROUGH THE CENTRAL U.S.A.

FOR THE OFFSHORE OIL PLATFORM SITES THAT ARE TO THE NORTH OF 27N
TO THE WEST OF 87W/88W...

LOW CLOUD CEILINGS ARE BEING REPORTED AT THE FOLLOWING ICAO
STATIONS...KMZG...KBQX...KGUL...KHQI...AND KMDJ. ICAO STATION
KBBF IS REPORTING A VISIBILITY OF 3 MILES OR LESS WITH FOG/HAZE.
FAIR SKIES/CLEAR SKIES AT OR LOWER THAN 12000 FEET ARE BEING
REPORTED ELSEWHERE.

...THE CARIBBEAN SEA...

A SURFACE TROUGH EXTENDS FROM 26N61W IN THE ATLANTIC OCEAN...TO
21N70W... THROUGH THE WINDWARD PASSAGE TO 19N81W IN THE
NORTHWESTERN CORNER OF THE CARIBBEAN SEA. CONVECTIVE
PRECIPITATION...RAINSHOWERS ARE POSSIBLE IN THE CARIBBEAN SEA
AND THE WATERS AROUND THE BAHAMAS AND CUBA FROM 18N TO 22N
BETWEEN THE MONA PASSAGE AND YUCATAN CHANNEL.

AN UPPER LEVEL RIDGE EXTENDS FROM COASTAL SECTIONS OF
VENEZUELA...INTO THE WEST CENTRAL CARIBBEAN SEA...THROUGH COSTA
RICA AND NICARAGUA...INTO THE EASTERN PACIFIC OCEAN. HIGH LEVEL
MOISTURE IS CURVING FROM CENTRAL AMERICA AND COLOMBIA AND
VENEZUELA...INTO THE CARIBBEAN SEA.

BROKEN TO OVERCAST LOW LEVEL AND MIDDLE LEVEL CLOUDS AND
POSSIBLE RAINSHOWERS ARE PRIMARILY...FROM 8N TO 13N BETWEEN 60W
AND 64W IN THE SOUTHEASTERN CORNER OF THE AREA...AND TO THE
SOUTH OF 14N TO THE WEST OF 74W IN THE SOUTHWESTERN CORNER OF
THE AREA...IN SURFACE TRADEWIND FLOW.

THE 24-HOUR RAINFALL TOTAL IN INCHES FOR THE PERIOD ENDING AT
24/1200 UTC...ACCORDING TO THE PAN AMERICAN TEMPERATURE AND
PRECIPITATION TABLES...MIATPTPAN/SXCA01 KNHC...IS 0.26 IN
ST. THOMAS...AND 0.10 IN TRINIDAD.

...HISPANIOLA...

A SURFACE TROUGH EXTENDS FROM 26N61W IN THE ATLANTIC OCEAN...TO
21N70W... THROUGH THE WINDWARD PASSAGE TO 19N81W IN THE
NORTHWESTERN CORNER OF THE CARIBBEAN SEA. CONVECTIVE
PRECIPITATION...RAINSHOWERS ARE POSSIBLE IN THE CARIBBEAN SEA
AND THE WATERS AROUND THE BAHAMAS AND CUBA FROM 18N TO 22N
BETWEEN THE MONA PASSAGE AND YUCATAN CHANNEL.

AN UPPER LEVEL RIDGE EXTENDS FROM COASTAL SECTIONS OF
VENEZUELA...INTO THE WEST CENTRAL CARIBBEAN SEA...THROUGH COSTA
RICA AND NICARAGUA...INTO THE EASTERN PACIFIC OCEAN. HIGH LEVEL
MOISTURE IS CURVING FROM CENTRAL AMERICA AND COLOMBIA AND
VENEZUELA...INTO THE CARIBBEAN SEA.

CONDITIONS AND CURRENT WEATHER FOR THE DOMINICAN REPUBLIC...FEW
LOW LEVEL CLOUDS AND A HIGH LEVEL CLOUD CEILING COVER
BARAHONA...SANTO DOMINGO...AND PUNTA CANA. A LOW CLOUD CEILING
COVERS LA ROMANA. SCATTERED LOW LEVEL CLOUDS...CUMULONIMBUS...
ARE BEING OBSERVED IN SANTIAGO. SCATTERED LOW LEVEL CLOUDS ARE
BEING REPORTED IN PUERTO PLATA.

...THE ATLANTIC OCEAN...

A MIDDLE LEVEL TO UPPER LEVEL TROUGH PASSES THROUGH 32N59W TO
24N69W. A COLD FRONT PASSES THROUGH 32N59W TO 28N69W. A PRE-
FRONTAL TROUGH IS ALONG 29N63W 25N71W. BROAD MIDDLE LEVEL TO
UPPER LEVEL CYCLONIC WIND FLOW...AND COMPARATIVELY DRIER AIR IN
SUBSIDENCE...APPARENT IN WATER VAPOR IMAGERY...COVER THE AREA
THAT IS TO THE NORTHWEST AND NORTH OF THE LINE THAT PASSES
THROUGH 32N47W 24N60W 24N77W. A LINGERING STATIONARY FRONT
CONTINUES ALONG 32N50W TO 31N51W. A DISSIPATING STATIONARY FRONT
CONTINUES FROM 31N51W TO 27N56W AND 26N61W. A SURFACE TROUGH
CONTINUES FROM 26N61W TO 21N70W... THROUGH THE WINDWARD PASSAGE
TO 19N81W IN THE NORTHWESTERN CORNER OF THE CARIBBEAN SEA.
CONVECTIVE PRECIPITATION...SCATTERED MODERATE TO ISOLATED STRONG
WITHIN 30 NM TO 60 NM ON EITHER SIDE OF THE LINE THAT PASSES
THROUGH 32N47W...TO 29N46W...TO 27N52W TO 24N59W. RAINSHOWERS
ARE POSSIBLE ELSEWHERE IN THE ATLANTIC OCEAN FROM 20N TO 24N
BETWEEN 60W AND 68W...AND IN THE CARIBBEAN SEA AND THE WATERS
AROUND THE BAHAMAS AND CUBA FROM 18N TO 22N BETWEEN THE MONA
PASSAGE AND YUCATAN CHANNEL. SURFACE ANTICYCLONIC WIND FLOW
COVERS THE AREA THAT IS TO THE NORTH OF CUBA BETWEEN 70W AND
FLORIDA.

THE 24-HOUR RAINFALL TOTAL IN INCHES FOR THE PERIOD ENDING AT
24/1200 UTC...ACCORDING TO THE PAN AMERICAN TEMPERATURE AND
PRECIPITATION TABLES...MIATPTPAN/SXCA01 KNHC...IS 0.54 IN
BERMUDA.

REMNANTS OF A MIDDLE LEVEL TO UPPER LEVEL TROUGH ARE ALONG
32N24W 24N27W 12N45W. COMPARATIVELY DRIER AIR IN SUBSIDENCE...
APPARENT IN WATER VAPOR IMAGERY...IS FROM 7N TO 20N BETWEEN 35W
AND 60W.

A 1029 MB HIGH PRESSURE CENTER IS NEAR 35N26W. A SURFACE RIDGE
EXTENDS FROM THE HIGH CENTER THROUGH 32N31W 27N35W 23N44W...INTO
THE EASTERN CARIBBEAN SEA NEAR 16N65W. ANTICYCLONIC WIND FLOW
COVERS THE ATLANTIC OCEAN AND THE CARIBBEAN SEA TO THE NORTH OF
10N BETWEEN AFRICA AND THE LINE 32N48W 20N60W 15N67W.

PLEASE READ THE HIGH SEAS FORECAST...MIAHSFAT2/FZNT02 KNHC...FOR
MORE DETAILS ABOUT...A COLD FRONT FROM 31N60W TO 28N66W TO
28N72W. N OF 29N E OF FRONT TO 56W SW TO W WINDS 20 TO 25 KT.
SEAS 8 FT. N OF 29N W OF FRONT TO 68W W TO NW WINDS 20 TO 25 KT.
SEAS TO 10 FT IN NW SWELL. A SECOND AREA OF CONCERN CONSISTS
OF...N OF 27N BETWEEN 45W AND 52W S TO SW WINDS 20 TO 25 KT.
SEAS TO 9 FT. A THIRD AREA OF CONCERN CONSISTS OF...S OF 16N E
OF 51W WINDS 20 KT OR LESS. SEAS TO 8 FT IN NE SWELL. A FOURTH
AREA OF CONCERN CONSISTS OF...FROM 16N TO 26N E OF 40W WINDS 20
KT OR LESS. SEAS TO 8 FT IN N SWELL.

FOR ADDITIONAL INFORMATION PLEASE VISIT
HTTP://WWW.HURRICANES.GOV/MARINE

$$
MT



000
AXNT20 KNHC 241804
TWDAT

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
205 PM EST THU APR 24 2014

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL
AMERICA...GULF OF MEXICO...CARIBBEAN SEA...NORTHERN SECTIONS OF
SOUTH AMERICA...AND ATLANTIC OCEAN TO THE AFRICAN COAST FROM THE
EQUATOR TO 32N. THE FOLLOWING INFORMATION IS BASED ON SATELLITE
IMAGERY...WEATHER OBSERVATIONS...RADAR...AND METEOROLOGICAL
ANALYSIS.

BASED ON 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
1745 UTC.

...THE ITCZ/THE MONSOON TROUGH...

THE MONSOON TROUGH PASSES THROUGH COASTAL SECTIONS OF SENEGAL
NEAR 14N17W TO 7N19W TO 5N22W. THE ITCZ CONTINUES FROM 5N22W TO
1N30W...CROSSING THE EQUATOR ALONG 35W...TO 1S42W. CONVECTIVE
PRECIPITATION...NUMEROUS STRONG FROM 1N TO 3N BETWEEN 43W AND
50W. ISOLATED MODERATE FROM 3N TO 5N BETWEEN 18W AND 26W...AND
FROM THE EQUATOR TO 3N BETWEEN 39W AND 43W.

A SURFACE TROUGH IS ALONG 3N1W 2N8W. CONVECTIVE PRECIPITATION...
EARLIER CONVECTIVE PRECIPITATION HAS BEEN DISSIPATING DURING THE
LAST 4 TO 6 HOUR OR SO...TO THE SOUTH OF 5N TO THE EAST OF 10W.
BROKEN TO OVERCAST MULTILAYERED CONVECTIVE DEBRIS CLOUDS AND
POSSIBLE REMAINING RAINSHOWERS ARE IN THIS AREA.

...DISCUSSION...

...THE GULF OF MEXICO...

UPPER LEVEL SOUTHWESTERLY WIND FLOW IS MOVING ACROSS THE GULF OF
MEXICO. THIS WIND FLOW IS IN ADVANCE OF A DEEP LAYER TROUGH THAT
CURRENTLY IS MOVING THROUGH THE CENTRAL U.S.A.

FOR THE OFFSHORE OIL PLATFORM SITES THAT ARE TO THE NORTH OF 27N
TO THE WEST OF 87W/88W...

LOW CLOUD CEILINGS ARE BEING REPORTED AT THE FOLLOWING ICAO
STATIONS...KMZG...KBQX...KGUL...KHQI...AND KMDJ. ICAO STATION
KBBF IS REPORTING A VISIBILITY OF 3 MILES OR LESS WITH FOG/HAZE.
FAIR SKIES/CLEAR SKIES AT OR LOWER THAN 12000 FEET ARE BEING
REPORTED ELSEWHERE.

...THE CARIBBEAN SEA...

A SURFACE TROUGH EXTENDS FROM 26N61W IN THE ATLANTIC OCEAN...TO
21N70W... THROUGH THE WINDWARD PASSAGE TO 19N81W IN THE
NORTHWESTERN CORNER OF THE CARIBBEAN SEA. CONVECTIVE
PRECIPITATION...RAINSHOWERS ARE POSSIBLE IN THE CARIBBEAN SEA
AND THE WATERS AROUND THE BAHAMAS AND CUBA FROM 18N TO 22N
BETWEEN THE MONA PASSAGE AND YUCATAN CHANNEL.

AN UPPER LEVEL RIDGE EXTENDS FROM COASTAL SECTIONS OF
VENEZUELA...INTO THE WEST CENTRAL CARIBBEAN SEA...THROUGH COSTA
RICA AND NICARAGUA...INTO THE EASTERN PACIFIC OCEAN. HIGH LEVEL
MOISTURE IS CURVING FROM CENTRAL AMERICA AND COLOMBIA AND
VENEZUELA...INTO THE CARIBBEAN SEA.

BROKEN TO OVERCAST LOW LEVEL AND MIDDLE LEVEL CLOUDS AND
POSSIBLE RAINSHOWERS ARE PRIMARILY...FROM 8N TO 13N BETWEEN 60W
AND 64W IN THE SOUTHEASTERN CORNER OF THE AREA...AND TO THE
SOUTH OF 14N TO THE WEST OF 74W IN THE SOUTHWESTERN CORNER OF
THE AREA...IN SURFACE TRADEWIND FLOW.

THE 24-HOUR RAINFALL TOTAL IN INCHES FOR THE PERIOD ENDING AT
24/1200 UTC...ACCORDING TO THE PAN AMERICAN TEMPERATURE AND
PRECIPITATION TABLES...MIATPTPAN/SXCA01 KNHC...IS 0.26 IN
ST. THOMAS...AND 0.10 IN TRINIDAD.

...HISPANIOLA...

A SURFACE TROUGH EXTENDS FROM 26N61W IN THE ATLANTIC OCEAN...TO
21N70W... THROUGH THE WINDWARD PASSAGE TO 19N81W IN THE
NORTHWESTERN CORNER OF THE CARIBBEAN SEA. CONVECTIVE
PRECIPITATION...RAINSHOWERS ARE POSSIBLE IN THE CARIBBEAN SEA
AND THE WATERS AROUND THE BAHAMAS AND CUBA FROM 18N TO 22N
BETWEEN THE MONA PASSAGE AND YUCATAN CHANNEL.

AN UPPER LEVEL RIDGE EXTENDS FROM COASTAL SECTIONS OF
VENEZUELA...INTO THE WEST CENTRAL CARIBBEAN SEA...THROUGH COSTA
RICA AND NICARAGUA...INTO THE EASTERN PACIFIC OCEAN. HIGH LEVEL
MOISTURE IS CURVING FROM CENTRAL AMERICA AND COLOMBIA AND
VENEZUELA...INTO THE CARIBBEAN SEA.

CONDITIONS AND CURRENT WEATHER FOR THE DOMINICAN REPUBLIC...FEW
LOW LEVEL CLOUDS AND A HIGH LEVEL CLOUD CEILING COVER
BARAHONA...SANTO DOMINGO...AND PUNTA CANA. A LOW CLOUD CEILING
COVERS LA ROMANA. SCATTERED LOW LEVEL CLOUDS...CUMULONIMBUS...
ARE BEING OBSERVED IN SANTIAGO. SCATTERED LOW LEVEL CLOUDS ARE
BEING REPORTED IN PUERTO PLATA.

...THE ATLANTIC OCEAN...

A MIDDLE LEVEL TO UPPER LEVEL TROUGH PASSES THROUGH 32N59W TO
24N69W. A COLD FRONT PASSES THROUGH 32N59W TO 28N69W. A PRE-
FRONTAL TROUGH IS ALONG 29N63W 25N71W. BROAD MIDDLE LEVEL TO
UPPER LEVEL CYCLONIC WIND FLOW...AND COMPARATIVELY DRIER AIR IN
SUBSIDENCE...APPARENT IN WATER VAPOR IMAGERY...COVER THE AREA
THAT IS TO THE NORTHWEST AND NORTH OF THE LINE THAT PASSES
THROUGH 32N47W 24N60W 24N77W. A LINGERING STATIONARY FRONT
CONTINUES ALONG 32N50W TO 31N51W. A DISSIPATING STATIONARY FRONT
CONTINUES FROM 31N51W TO 27N56W AND 26N61W. A SURFACE TROUGH
CONTINUES FROM 26N61W TO 21N70W... THROUGH THE WINDWARD PASSAGE
TO 19N81W IN THE NORTHWESTERN CORNER OF THE CARIBBEAN SEA.
CONVECTIVE PRECIPITATION...SCATTERED MODERATE TO ISOLATED STRONG
WITHIN 30 NM TO 60 NM ON EITHER SIDE OF THE LINE THAT PASSES
THROUGH 32N47W...TO 29N46W...TO 27N52W TO 24N59W. RAINSHOWERS
ARE POSSIBLE ELSEWHERE IN THE ATLANTIC OCEAN FROM 20N TO 24N
BETWEEN 60W AND 68W...AND IN THE CARIBBEAN SEA AND THE WATERS
AROUND THE BAHAMAS AND CUBA FROM 18N TO 22N BETWEEN THE MONA
PASSAGE AND YUCATAN CHANNEL. SURFACE ANTICYCLONIC WIND FLOW
COVERS THE AREA THAT IS TO THE NORTH OF CUBA BETWEEN 70W AND
FLORIDA.

THE 24-HOUR RAINFALL TOTAL IN INCHES FOR THE PERIOD ENDING AT
24/1200 UTC...ACCORDING TO THE PAN AMERICAN TEMPERATURE AND
PRECIPITATION TABLES...MIATPTPAN/SXCA01 KNHC...IS 0.54 IN
BERMUDA.

REMNANTS OF A MIDDLE LEVEL TO UPPER LEVEL TROUGH ARE ALONG
32N24W 24N27W 12N45W. COMPARATIVELY DRIER AIR IN SUBSIDENCE...
APPARENT IN WATER VAPOR IMAGERY...IS FROM 7N TO 20N BETWEEN 35W
AND 60W.

A 1029 MB HIGH PRESSURE CENTER IS NEAR 35N26W. A SURFACE RIDGE
EXTENDS FROM THE HIGH CENTER THROUGH 32N31W 27N35W 23N44W...INTO
THE EASTERN CARIBBEAN SEA NEAR 16N65W. ANTICYCLONIC WIND FLOW
COVERS THE ATLANTIC OCEAN AND THE CARIBBEAN SEA TO THE NORTH OF
10N BETWEEN AFRICA AND THE LINE 32N48W 20N60W 15N67W.

PLEASE READ THE HIGH SEAS FORECAST...MIAHSFAT2/FZNT02 KNHC...FOR
MORE DETAILS ABOUT...A COLD FRONT FROM 31N60W TO 28N66W TO
28N72W. N OF 29N E OF FRONT TO 56W SW TO W WINDS 20 TO 25 KT.
SEAS 8 FT. N OF 29N W OF FRONT TO 68W W TO NW WINDS 20 TO 25 KT.
SEAS TO 10 FT IN NW SWELL. A SECOND AREA OF CONCERN CONSISTS
OF...N OF 27N BETWEEN 45W AND 52W S TO SW WINDS 20 TO 25 KT.
SEAS TO 9 FT. A THIRD AREA OF CONCERN CONSISTS OF...S OF 16N E
OF 51W WINDS 20 KT OR LESS. SEAS TO 8 FT IN NE SWELL. A FOURTH
AREA OF CONCERN CONSISTS OF...FROM 16N TO 26N E OF 40W WINDS 20
KT OR LESS. SEAS TO 8 FT IN N SWELL.

FOR ADDITIONAL INFORMATION PLEASE VISIT
HTTP://WWW.HURRICANES.GOV/MARINE

$$
MT



000
AXPZ20 KNHC 241538
TWDEP

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC THU APR 24 2014

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND
METEOROLOGICAL ANALYSIS.

BASED ON 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
1500 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

NO MONSOON TROUGH IS PRESENT. THE ITCZ AXIS EXTENDS FROM 07N81W
TO 04N110W TO 03N125W TO BEYOND 03N140W. SCATTERED MODERATE AND
ISOLATED STRONG CONVECTION IS N OF 05N BETWEEN 78W AND 82W...N
OF THE ITCZ BETWEEN 82W AND 85W...WITHIN 120 NM EITHER SIDE OF
THE ITCZ BETWEEN 86W AND 89W....WITHIN 180 NM S OF THE ITCZ
BETWEEN 88W AND 90W...WITHIN 180 NM S OF THE ITCZ BETWEEN 100W
AND 110W...AND ALSO WITHIN 240 NM N OF THE ITCZ BETWEEN 117W AND
121W.

...DISCUSSION...

A SURFACE RIDGE EXTENDS ACROSS THE WATERS N OF 20N W OF 107W.
THE PRESSURE GRADIENT BETWEEN THE RIDGE AND LOWER PRESSURE
ASSOCIATED WITH THE ITCZ TO THE S IS SUPPORTING FRESH TO STRONG
WINDS FROM 09N TO 14N W OF 133W WITH 9-10 FT SEAS. A LARGER AREA
OF MODERATE TO FRESH TRADES SURROUNDS WITH 8-9 FT SEAS COVERING
THE W CENTRAL WATERS. THE TRADES WILL DIMINISH TO MODERATE TO
FRESH BY 24 HOURS WITH THE AREA OF 8-9 FT SEAS IN MIXED NE...
SW...AND NW SWELL SPREADING EASTWARD TO 110W ACROSS THE CENTRAL
WATERS.

FRESH TO STRONG WINDS ARE N OF THE AREA ALONG THE CALIFORNIA
COAST. THESE WINDS ARE HELPING TO SUPPORT NW SEAS AT 8-10 FT
WHICH ARE FEEDING INTO THE WATERS N OF 25N BETWEEN 115W AND
126W. THESE SEAS WILL SUBSIDE TO LESS THAN 8 FT AROUND FRI
AFTERNOON...WITH A NEW SET OF NW SWELL ARRIVING SHORTLY
THEREAFTER AND COVERING THE WATERS N OF 25N BETWEEN 115W AND
132W BY SAT MORNING.

CROSS-EQUATORIAL SOUTHERLY SWELL AT 8-10 FT COVERS THE WATERS
S OF A LINE FROM 03.4S92W TO 10N114W TO 00N134W. THIS SWELL WILL
CONTINUE TO PROPAGATE TO THE N REACHING THE SW COAST OF
MEXICO...SOUTHERN GULF OF CALIFORNIA...AND THE PACIFIC COAST OF
THE BAJA CALIFORNIA PENINSULA LATE TONIGHT INTO EARLY FRI. SEAS
OF 8-9 FT WILL COVER THE AREA S OF A LINE FROM 20N110W TO 10N76W
TO 02N91W TO 01N82W.

OTHERWISE...EXPECT FAIRLY TRANQUIL CONDITIONS IN THE GULFS OF
TEHUANTEPEC...PAPAGAYO...AND PANAMA THROUGH THE NEXT FEW
DAYS...WITH WINDS OCCASIONALLY REACHING FRESH LEVELS IN PAPAGAYO
DURING PEAK NOCTURNAL DRAINAGE FLOW.

$$
LEWITSKY


000
AXPZ20 KNHC 241538
TWDEP

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC THU APR 24 2014

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND
METEOROLOGICAL ANALYSIS.

BASED ON 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
1500 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

NO MONSOON TROUGH IS PRESENT. THE ITCZ AXIS EXTENDS FROM 07N81W
TO 04N110W TO 03N125W TO BEYOND 03N140W. SCATTERED MODERATE AND
ISOLATED STRONG CONVECTION IS N OF 05N BETWEEN 78W AND 82W...N
OF THE ITCZ BETWEEN 82W AND 85W...WITHIN 120 NM EITHER SIDE OF
THE ITCZ BETWEEN 86W AND 89W....WITHIN 180 NM S OF THE ITCZ
BETWEEN 88W AND 90W...WITHIN 180 NM S OF THE ITCZ BETWEEN 100W
AND 110W...AND ALSO WITHIN 240 NM N OF THE ITCZ BETWEEN 117W AND
121W.

...DISCUSSION...

A SURFACE RIDGE EXTENDS ACROSS THE WATERS N OF 20N W OF 107W.
THE PRESSURE GRADIENT BETWEEN THE RIDGE AND LOWER PRESSURE
ASSOCIATED WITH THE ITCZ TO THE S IS SUPPORTING FRESH TO STRONG
WINDS FROM 09N TO 14N W OF 133W WITH 9-10 FT SEAS. A LARGER AREA
OF MODERATE TO FRESH TRADES SURROUNDS WITH 8-9 FT SEAS COVERING
THE W CENTRAL WATERS. THE TRADES WILL DIMINISH TO MODERATE TO
FRESH BY 24 HOURS WITH THE AREA OF 8-9 FT SEAS IN MIXED NE...
SW...AND NW SWELL SPREADING EASTWARD TO 110W ACROSS THE CENTRAL
WATERS.

FRESH TO STRONG WINDS ARE N OF THE AREA ALONG THE CALIFORNIA
COAST. THESE WINDS ARE HELPING TO SUPPORT NW SEAS AT 8-10 FT
WHICH ARE FEEDING INTO THE WATERS N OF 25N BETWEEN 115W AND
126W. THESE SEAS WILL SUBSIDE TO LESS THAN 8 FT AROUND FRI
AFTERNOON...WITH A NEW SET OF NW SWELL ARRIVING SHORTLY
THEREAFTER AND COVERING THE WATERS N OF 25N BETWEEN 115W AND
132W BY SAT MORNING.

CROSS-EQUATORIAL SOUTHERLY SWELL AT 8-10 FT COVERS THE WATERS
S OF A LINE FROM 03.4S92W TO 10N114W TO 00N134W. THIS SWELL WILL
CONTINUE TO PROPAGATE TO THE N REACHING THE SW COAST OF
MEXICO...SOUTHERN GULF OF CALIFORNIA...AND THE PACIFIC COAST OF
THE BAJA CALIFORNIA PENINSULA LATE TONIGHT INTO EARLY FRI. SEAS
OF 8-9 FT WILL COVER THE AREA S OF A LINE FROM 20N110W TO 10N76W
TO 02N91W TO 01N82W.

OTHERWISE...EXPECT FAIRLY TRANQUIL CONDITIONS IN THE GULFS OF
TEHUANTEPEC...PAPAGAYO...AND PANAMA THROUGH THE NEXT FEW
DAYS...WITH WINDS OCCASIONALLY REACHING FRESH LEVELS IN PAPAGAYO
DURING PEAK NOCTURNAL DRAINAGE FLOW.

$$
LEWITSKY



000
AXNT20 KNHC 241107
TWDAT

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
805 AM EDT THU APR 24 2014

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL
AMERICA...GULF OF MEXICO...CARIBBEAN SEA...NORTHERN SECTIONS OF
SOUTH AMERICA...AND ATLANTIC OCEAN TO THE AFRICAN COAST FROM THE
EQUATOR TO 32N. THE FOLLOWING INFORMATION IS BASED ON SATELLITE
IMAGERY...WEATHER OBSERVATIONS...RADAR...AND METEOROLOGICAL
ANALYSIS.

BASED ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
1045 UTC.

...THE ITCZ/THE MONSOON TROUGH...
THE MONSOON TROUGH EXITS W AFRICA AND PASSES THROUGH COASTAL
SECTIONS OF SENEGAL NEAR 14N16.5W AND ON TO NEAR 02N21W...WHERE
IT TRANSITIONS TO ITCZ. THE ITCZ THEN EXTENDS WESTWARD THROUGH
01N23.5W TO 00N38W TO COASTAL BRAZIL NEAR 01.5S46W. ISOLATED
MODERATE CONVECTION WAS NOTED FROM 03S TO 07N BETWEEN 13W AND
23W...WHILE SCATTERED STRONG CONVECTION WAS NOTED N OF 04N TO
WELL INLAND BETWEEN 10W AND 23W. SCATTERED MODERATE TO STRONG
CONVECTION WAS NOTED FROM 03S TO COASTAL AFRICA BETWEEN 03E AND
08W. ISOLATED MODERATE CELLS WERE OCCURRING IN A NARROW LINE
FROM 60 TO 150 NM N OF THE ITCZ BETWEEN 34W AND 45W.

...DISCUSSION...

...THE GULF OF MEXICO...
MILDLY DIFFLUENT UPPER LEVEL FLOW PREVAILS ACROSS THE W GULF
THIS MORNING AS UPPER RIDGING IS SHIFTING SLOWLY E ACROSS THE E
CENTRAL U.S. AND BROAD TROFFING EXTENDS FROM THE N CENTRAL GULF
S-SW THROUGH THE YUCATAN PENINSULA AND INTO THE TROPICAL EPAC
ALONG 93W. A WEAK MIDDLE LEVEL CYCLONIC VORTEX CAN BE SEEN IN
WATER VAPOR IMAGERY ACROSS THE N CENTRAL GULF NEAR 28N87W AND
SHIFTING EASTWARD...AND IS BECOMING SEPARATED FROM MIDDLE TO
UPPER LEVEL TROFFING ACROSS THE NW ATLC. THIS IS YIELDING DRY
AND GENERALLY STABLE CONDITIONS ALOFT N OF 25N. THE UPPER RIDGE
WILL SHIFT E TO ALONG 80W BY 00Z THIS EVENING...FOLLOWED BY A
DEEP LAYERED TROUGH CURRENTLY SHIFTING E ACROSS THE GREAT PLAINS
AND WILL SHIFT E INTO THE MS VALLEY TODAY. THIS DEEP LAYERED
TROUGH WILL SUPPORT A FRONTAL SYSTEM MOVING SE THROUGH TEXAS
TODAY...THEN SLOW TONIGHT ACROSS SE TEXAS AND NW LOUISIANA.
CURRENTLY...A 1015 MB HIGH IS CENTERED ACROSS THE NE GULF NEAR
27N83.5W...WITH MODERATE SE TO S RETURN FLOW PREVAILING ACROSS W
AND NW PORTIONS. THE HIGH WILL SHIFT E TO THE FLORIDA PENINSULA
TODAY AHEAD OF THE APPROACHING FRONT...AND COLLAPSE. RETURN FLOW
ACROSS ALL BUT SE PORTIONS WILL PROVIDE SUFFICIENT MOISTURE FOR
LATE AFTERNOON AND EVENING CONVECTION ACROSS N AND NW COASTAL
PORTIONS AS UPPER CONDITIONS DESTABILIZE IN ADVANCE OF THE
APPROACHING UPPER TROUGH. THE FRONT IS FORECAST TO STALL LATE
TONIGHT-EARLY FRI MORNING ACROSS THE NORTHERN COASTS AND COASTAL
WATERS ALONG ABOUT 30N...AND WEAKEN.

...THE CARIBBEAN SEA...
A BROAD UPPER RIDGE DOMINATES ALL BUT FAR NW PORTIONS OF THE
CARIBBEAN THIS MORNING...YIELDING MODEST UPPER CONFLUENCE AND
MOSTLY STABLE CONDITIONS ALOFT. THE ATLANTIC RIDGE IS PRESENTLY
CENTERED ACROSS THE NE ATLC AND EXTENDS SW AND WEAKLY TO PUERTO
RICO AND THE NE CARIBBEAN...MAINTAINING GENERALLY LIGHT TO
MODERATE TRADE WINDS ACROSS THE CARIBBEAN BASIN THIS MORNING.
THE EXCEPTION IS ALONG THE COAST OF VENEZUELA...THE ABC ISLANDS
AND NE COLOMBIA...WHERE WINDS TO 20 KT WERE NOTED. ACTIVE DEEP
CONVECTION IS OCCURRING ACROSS MUCH OF N COLOMBIA ATTM AND
SPREADS N INTO THE IMMEDIATE WATERS WITHIN 45 NM OF THE COAST.
AN OLD FRONTAL ZONE PERSISTS FROM THE ATLANTIC W-SW ACROSS THE
NW COAST OF HAITI AND THROUGH THE WINDWARD PASSAGE TO JUST W OF
THE CAYMAN ISLANDS NEAR 19N83W. ISOLATED TO WIDELY SCATTERED
SHOWERS ARE SEEN NEAR THE BOUNDARY...MOSTLY W OF THE CAYMANS.
HIGH PRES WILL BUILD N OF THE AREA THIS WEEKEND...ALLOWING TRADE
WINDS TO INCREASE OVER THE SOUTH CENTRAL CARIBBEAN AND GULF OF
HONDURAS. ADDITIONALLY...A BROAD ZONE OF LOW LEVEL MOISTURE
ACROSS THE TROPICAL N ATLC S OF 15N WILL MOVE W-NW ACROSS THE
LESSER ANTILLES TODAY AND ACROSS THE E CARIBBEAN THROUGH TONIGHT
TO YIELD WIDELY SCATTERED TO SCATTERED BRIEF PASSING SHOWERS.

...HISPANIOLA...
AN OLD FRONTAL ZONE MENTIONED ABOVE...IN THE FORM OF A
TROUGH...EXTENDS W-SW ACROSS THE NW COAST OF HAITI. TPW
ANIMATIONS SUGGEST THE BEST MOISTURE IS CONVERGING N OF THIS
TROUGH AND ACROSS N COASTAL SECTIONS AND INTO THE TURKS AND
CAICOS ISLANDS. THIS BOUNDARY WILL CONTINUE TO WEAKEN
TODAY...BUT SUFFICIENT LLVL MOISTURE WILL COMBINE WITH
PREVAILING LIGHT TO MODERATE E-SE LLVL FLOW TO FOCUS AFTERNOON
AND EVENING CONVECTION ACROSS N CENTRAL AND NW PORTIONS OF THE
ISLAND. DUE TO A NARROW MID LEVEL RIDGE ACROSS THE AREA...
CONDITIONS ARE NOT EXPECTED TO BE VERY UNSTABLE...AND ONLY
ISOLATED MODERATE TSTMS ARE EXPECTED.

...THE ATLANTIC OCEAN...
A BROAD MID TO UPPER LEVEL TROUGH CONTINUES TO MOVE EASTWARD
OVER THE NW ATLANTIC...REACHING FROM OFFSHORE OF NEW ENGLAND SE
TO A BASE NEAR 28N59W. MIDDLE TO UPPER LEVEL DYNAMICS AHEAD OF
THIS TROUGH ARE INTERACTING WITH A STALLED AND WEAKENING FRONTAL
ZONE...EXTENDING FROM 31N54W TO NW HAITI...TO PRODUCE AN AREA OF
SCATTERED MODERATE CONVECTION WITHIN 180 NM SE OF THE FRONTAL
TROUGH N OF 26N. THE BROAD DEEP LAYERED TROUGH ALSO SUPPORTS A
FRONTAL BOUNDARY THAT HAS SWEPT THROUGH BERMUDA IN THE PAST
COUPLE OF HOURS AND ACROSS N CENTRAL PORTIONS OF THE AREA. A
WEAK 1015 MB HIGH WAS NOTED BETWEEN THESE TWO BOUNDARIES...
CENTERED OVER THE SE BAHAMAS. THE NEW FRONT WILL SHIFT SE
THROUGH FRIDAY AND THEN DRIFT S TO ALONG 24N EARLY SAT AND
STALL...FOLLOWED BY MODERATE RIDGING. THIS WILL INCREASE TRADE
WIND FLOW S OF 22N W OF 60W THIS WEEKEND.

FARTHER EAST...THE ATLC RIDGE EXTENDS FROM 1028 MB HIGH NEAR
34N28W TO PUERTO RICO AND THE WATERS JUST N OF THE MONA PASSAGE.
RECENT ASCAT DATA INDICATED MODERATE TRADEWINDS 15-20 KT
OCCURRING S OF THE RIDGE W OF 30W...AND GENERALLY S OF 18-20N...
WITH SEAS 8 TO 9 FT AS NOTED BY ALTIMETER SATELLITE PASSES
BETWEEN 40W AND 45W. MODERATE TO FRESH N TO NE FLOW IS NOTED
OVER THE FAR EASTERN TROPICAL ATLC WATERS EAST OF 35W TO THE
COAST OF AFRICA. LIMITED TRADE WIND CONVERGENCE IS INHIBITING
SIGNIFICANT CONVECTION ALONG THE ITCZ...ALTHOUGH UPPER RIDGING
ACROSS EQUATORIAL E ATLC AND CENTRAL AFRICA ARE ENHANCING
SHOWERS AND THUNDERSTORMS IN THE DEEP TROPICS SOUTH OF 10N
AND EAST OF 10W.

FOR ADDITIONAL INFORMATION PLEASE VISIT
HTTP://WWW.HURRICANES.GOV/MARINE

$$
STRIPLING



000
AXNT20 KNHC 241107
TWDAT

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
805 AM EDT THU APR 24 2014

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL
AMERICA...GULF OF MEXICO...CARIBBEAN SEA...NORTHERN SECTIONS OF
SOUTH AMERICA...AND ATLANTIC OCEAN TO THE AFRICAN COAST FROM THE
EQUATOR TO 32N. THE FOLLOWING INFORMATION IS BASED ON SATELLITE
IMAGERY...WEATHER OBSERVATIONS...RADAR...AND METEOROLOGICAL
ANALYSIS.

BASED ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
1045 UTC.

...THE ITCZ/THE MONSOON TROUGH...
THE MONSOON TROUGH EXITS W AFRICA AND PASSES THROUGH COASTAL
SECTIONS OF SENEGAL NEAR 14N16.5W AND ON TO NEAR 02N21W...WHERE
IT TRANSITIONS TO ITCZ. THE ITCZ THEN EXTENDS WESTWARD THROUGH
01N23.5W TO 00N38W TO COASTAL BRAZIL NEAR 01.5S46W. ISOLATED
MODERATE CONVECTION WAS NOTED FROM 03S TO 07N BETWEEN 13W AND
23W...WHILE SCATTERED STRONG CONVECTION WAS NOTED N OF 04N TO
WELL INLAND BETWEEN 10W AND 23W. SCATTERED MODERATE TO STRONG
CONVECTION WAS NOTED FROM 03S TO COASTAL AFRICA BETWEEN 03E AND
08W. ISOLATED MODERATE CELLS WERE OCCURRING IN A NARROW LINE
FROM 60 TO 150 NM N OF THE ITCZ BETWEEN 34W AND 45W.

...DISCUSSION...

...THE GULF OF MEXICO...
MILDLY DIFFLUENT UPPER LEVEL FLOW PREVAILS ACROSS THE W GULF
THIS MORNING AS UPPER RIDGING IS SHIFTING SLOWLY E ACROSS THE E
CENTRAL U.S. AND BROAD TROFFING EXTENDS FROM THE N CENTRAL GULF
S-SW THROUGH THE YUCATAN PENINSULA AND INTO THE TROPICAL EPAC
ALONG 93W. A WEAK MIDDLE LEVEL CYCLONIC VORTEX CAN BE SEEN IN
WATER VAPOR IMAGERY ACROSS THE N CENTRAL GULF NEAR 28N87W AND
SHIFTING EASTWARD...AND IS BECOMING SEPARATED FROM MIDDLE TO
UPPER LEVEL TROFFING ACROSS THE NW ATLC. THIS IS YIELDING DRY
AND GENERALLY STABLE CONDITIONS ALOFT N OF 25N. THE UPPER RIDGE
WILL SHIFT E TO ALONG 80W BY 00Z THIS EVENING...FOLLOWED BY A
DEEP LAYERED TROUGH CURRENTLY SHIFTING E ACROSS THE GREAT PLAINS
AND WILL SHIFT E INTO THE MS VALLEY TODAY. THIS DEEP LAYERED
TROUGH WILL SUPPORT A FRONTAL SYSTEM MOVING SE THROUGH TEXAS
TODAY...THEN SLOW TONIGHT ACROSS SE TEXAS AND NW LOUISIANA.
CURRENTLY...A 1015 MB HIGH IS CENTERED ACROSS THE NE GULF NEAR
27N83.5W...WITH MODERATE SE TO S RETURN FLOW PREVAILING ACROSS W
AND NW PORTIONS. THE HIGH WILL SHIFT E TO THE FLORIDA PENINSULA
TODAY AHEAD OF THE APPROACHING FRONT...AND COLLAPSE. RETURN FLOW
ACROSS ALL BUT SE PORTIONS WILL PROVIDE SUFFICIENT MOISTURE FOR
LATE AFTERNOON AND EVENING CONVECTION ACROSS N AND NW COASTAL
PORTIONS AS UPPER CONDITIONS DESTABILIZE IN ADVANCE OF THE
APPROACHING UPPER TROUGH. THE FRONT IS FORECAST TO STALL LATE
TONIGHT-EARLY FRI MORNING ACROSS THE NORTHERN COASTS AND COASTAL
WATERS ALONG ABOUT 30N...AND WEAKEN.

...THE CARIBBEAN SEA...
A BROAD UPPER RIDGE DOMINATES ALL BUT FAR NW PORTIONS OF THE
CARIBBEAN THIS MORNING...YIELDING MODEST UPPER CONFLUENCE AND
MOSTLY STABLE CONDITIONS ALOFT. THE ATLANTIC RIDGE IS PRESENTLY
CENTERED ACROSS THE NE ATLC AND EXTENDS SW AND WEAKLY TO PUERTO
RICO AND THE NE CARIBBEAN...MAINTAINING GENERALLY LIGHT TO
MODERATE TRADE WINDS ACROSS THE CARIBBEAN BASIN THIS MORNING.
THE EXCEPTION IS ALONG THE COAST OF VENEZUELA...THE ABC ISLANDS
AND NE COLOMBIA...WHERE WINDS TO 20 KT WERE NOTED. ACTIVE DEEP
CONVECTION IS OCCURRING ACROSS MUCH OF N COLOMBIA ATTM AND
SPREADS N INTO THE IMMEDIATE WATERS WITHIN 45 NM OF THE COAST.
AN OLD FRONTAL ZONE PERSISTS FROM THE ATLANTIC W-SW ACROSS THE
NW COAST OF HAITI AND THROUGH THE WINDWARD PASSAGE TO JUST W OF
THE CAYMAN ISLANDS NEAR 19N83W. ISOLATED TO WIDELY SCATTERED
SHOWERS ARE SEEN NEAR THE BOUNDARY...MOSTLY W OF THE CAYMANS.
HIGH PRES WILL BUILD N OF THE AREA THIS WEEKEND...ALLOWING TRADE
WINDS TO INCREASE OVER THE SOUTH CENTRAL CARIBBEAN AND GULF OF
HONDURAS. ADDITIONALLY...A BROAD ZONE OF LOW LEVEL MOISTURE
ACROSS THE TROPICAL N ATLC S OF 15N WILL MOVE W-NW ACROSS THE
LESSER ANTILLES TODAY AND ACROSS THE E CARIBBEAN THROUGH TONIGHT
TO YIELD WIDELY SCATTERED TO SCATTERED BRIEF PASSING SHOWERS.

...HISPANIOLA...
AN OLD FRONTAL ZONE MENTIONED ABOVE...IN THE FORM OF A
TROUGH...EXTENDS W-SW ACROSS THE NW COAST OF HAITI. TPW
ANIMATIONS SUGGEST THE BEST MOISTURE IS CONVERGING N OF THIS
TROUGH AND ACROSS N COASTAL SECTIONS AND INTO THE TURKS AND
CAICOS ISLANDS. THIS BOUNDARY WILL CONTINUE TO WEAKEN
TODAY...BUT SUFFICIENT LLVL MOISTURE WILL COMBINE WITH
PREVAILING LIGHT TO MODERATE E-SE LLVL FLOW TO FOCUS AFTERNOON
AND EVENING CONVECTION ACROSS N CENTRAL AND NW PORTIONS OF THE
ISLAND. DUE TO A NARROW MID LEVEL RIDGE ACROSS THE AREA...
CONDITIONS ARE NOT EXPECTED TO BE VERY UNSTABLE...AND ONLY
ISOLATED MODERATE TSTMS ARE EXPECTED.

...THE ATLANTIC OCEAN...
A BROAD MID TO UPPER LEVEL TROUGH CONTINUES TO MOVE EASTWARD
OVER THE NW ATLANTIC...REACHING FROM OFFSHORE OF NEW ENGLAND SE
TO A BASE NEAR 28N59W. MIDDLE TO UPPER LEVEL DYNAMICS AHEAD OF
THIS TROUGH ARE INTERACTING WITH A STALLED AND WEAKENING FRONTAL
ZONE...EXTENDING FROM 31N54W TO NW HAITI...TO PRODUCE AN AREA OF
SCATTERED MODERATE CONVECTION WITHIN 180 NM SE OF THE FRONTAL
TROUGH N OF 26N. THE BROAD DEEP LAYERED TROUGH ALSO SUPPORTS A
FRONTAL BOUNDARY THAT HAS SWEPT THROUGH BERMUDA IN THE PAST
COUPLE OF HOURS AND ACROSS N CENTRAL PORTIONS OF THE AREA. A
WEAK 1015 MB HIGH WAS NOTED BETWEEN THESE TWO BOUNDARIES...
CENTERED OVER THE SE BAHAMAS. THE NEW FRONT WILL SHIFT SE
THROUGH FRIDAY AND THEN DRIFT S TO ALONG 24N EARLY SAT AND
STALL...FOLLOWED BY MODERATE RIDGING. THIS WILL INCREASE TRADE
WIND FLOW S OF 22N W OF 60W THIS WEEKEND.

FARTHER EAST...THE ATLC RIDGE EXTENDS FROM 1028 MB HIGH NEAR
34N28W TO PUERTO RICO AND THE WATERS JUST N OF THE MONA PASSAGE.
RECENT ASCAT DATA INDICATED MODERATE TRADEWINDS 15-20 KT
OCCURRING S OF THE RIDGE W OF 30W...AND GENERALLY S OF 18-20N...
WITH SEAS 8 TO 9 FT AS NOTED BY ALTIMETER SATELLITE PASSES
BETWEEN 40W AND 45W. MODERATE TO FRESH N TO NE FLOW IS NOTED
OVER THE FAR EASTERN TROPICAL ATLC WATERS EAST OF 35W TO THE
COAST OF AFRICA. LIMITED TRADE WIND CONVERGENCE IS INHIBITING
SIGNIFICANT CONVECTION ALONG THE ITCZ...ALTHOUGH UPPER RIDGING
ACROSS EQUATORIAL E ATLC AND CENTRAL AFRICA ARE ENHANCING
SHOWERS AND THUNDERSTORMS IN THE DEEP TROPICS SOUTH OF 10N
AND EAST OF 10W.

FOR ADDITIONAL INFORMATION PLEASE VISIT
HTTP://WWW.HURRICANES.GOV/MARINE

$$
STRIPLING



000
AXNT20 KNHC 241107
TWDAT

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
805 AM EDT THU APR 24 2014

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL
AMERICA...GULF OF MEXICO...CARIBBEAN SEA...NORTHERN SECTIONS OF
SOUTH AMERICA...AND ATLANTIC OCEAN TO THE AFRICAN COAST FROM THE
EQUATOR TO 32N. THE FOLLOWING INFORMATION IS BASED ON SATELLITE
IMAGERY...WEATHER OBSERVATIONS...RADAR...AND METEOROLOGICAL
ANALYSIS.

BASED ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
1045 UTC.

...THE ITCZ/THE MONSOON TROUGH...
THE MONSOON TROUGH EXITS W AFRICA AND PASSES THROUGH COASTAL
SECTIONS OF SENEGAL NEAR 14N16.5W AND ON TO NEAR 02N21W...WHERE
IT TRANSITIONS TO ITCZ. THE ITCZ THEN EXTENDS WESTWARD THROUGH
01N23.5W TO 00N38W TO COASTAL BRAZIL NEAR 01.5S46W. ISOLATED
MODERATE CONVECTION WAS NOTED FROM 03S TO 07N BETWEEN 13W AND
23W...WHILE SCATTERED STRONG CONVECTION WAS NOTED N OF 04N TO
WELL INLAND BETWEEN 10W AND 23W. SCATTERED MODERATE TO STRONG
CONVECTION WAS NOTED FROM 03S TO COASTAL AFRICA BETWEEN 03E AND
08W. ISOLATED MODERATE CELLS WERE OCCURRING IN A NARROW LINE
FROM 60 TO 150 NM N OF THE ITCZ BETWEEN 34W AND 45W.

...DISCUSSION...

...THE GULF OF MEXICO...
MILDLY DIFFLUENT UPPER LEVEL FLOW PREVAILS ACROSS THE W GULF
THIS MORNING AS UPPER RIDGING IS SHIFTING SLOWLY E ACROSS THE E
CENTRAL U.S. AND BROAD TROFFING EXTENDS FROM THE N CENTRAL GULF
S-SW THROUGH THE YUCATAN PENINSULA AND INTO THE TROPICAL EPAC
ALONG 93W. A WEAK MIDDLE LEVEL CYCLONIC VORTEX CAN BE SEEN IN
WATER VAPOR IMAGERY ACROSS THE N CENTRAL GULF NEAR 28N87W AND
SHIFTING EASTWARD...AND IS BECOMING SEPARATED FROM MIDDLE TO
UPPER LEVEL TROFFING ACROSS THE NW ATLC. THIS IS YIELDING DRY
AND GENERALLY STABLE CONDITIONS ALOFT N OF 25N. THE UPPER RIDGE
WILL SHIFT E TO ALONG 80W BY 00Z THIS EVENING...FOLLOWED BY A
DEEP LAYERED TROUGH CURRENTLY SHIFTING E ACROSS THE GREAT PLAINS
AND WILL SHIFT E INTO THE MS VALLEY TODAY. THIS DEEP LAYERED
TROUGH WILL SUPPORT A FRONTAL SYSTEM MOVING SE THROUGH TEXAS
TODAY...THEN SLOW TONIGHT ACROSS SE TEXAS AND NW LOUISIANA.
CURRENTLY...A 1015 MB HIGH IS CENTERED ACROSS THE NE GULF NEAR
27N83.5W...WITH MODERATE SE TO S RETURN FLOW PREVAILING ACROSS W
AND NW PORTIONS. THE HIGH WILL SHIFT E TO THE FLORIDA PENINSULA
TODAY AHEAD OF THE APPROACHING FRONT...AND COLLAPSE. RETURN FLOW
ACROSS ALL BUT SE PORTIONS WILL PROVIDE SUFFICIENT MOISTURE FOR
LATE AFTERNOON AND EVENING CONVECTION ACROSS N AND NW COASTAL
PORTIONS AS UPPER CONDITIONS DESTABILIZE IN ADVANCE OF THE
APPROACHING UPPER TROUGH. THE FRONT IS FORECAST TO STALL LATE
TONIGHT-EARLY FRI MORNING ACROSS THE NORTHERN COASTS AND COASTAL
WATERS ALONG ABOUT 30N...AND WEAKEN.

...THE CARIBBEAN SEA...
A BROAD UPPER RIDGE DOMINATES ALL BUT FAR NW PORTIONS OF THE
CARIBBEAN THIS MORNING...YIELDING MODEST UPPER CONFLUENCE AND
MOSTLY STABLE CONDITIONS ALOFT. THE ATLANTIC RIDGE IS PRESENTLY
CENTERED ACROSS THE NE ATLC AND EXTENDS SW AND WEAKLY TO PUERTO
RICO AND THE NE CARIBBEAN...MAINTAINING GENERALLY LIGHT TO
MODERATE TRADE WINDS ACROSS THE CARIBBEAN BASIN THIS MORNING.
THE EXCEPTION IS ALONG THE COAST OF VENEZUELA...THE ABC ISLANDS
AND NE COLOMBIA...WHERE WINDS TO 20 KT WERE NOTED. ACTIVE DEEP
CONVECTION IS OCCURRING ACROSS MUCH OF N COLOMBIA ATTM AND
SPREADS N INTO THE IMMEDIATE WATERS WITHIN 45 NM OF THE COAST.
AN OLD FRONTAL ZONE PERSISTS FROM THE ATLANTIC W-SW ACROSS THE
NW COAST OF HAITI AND THROUGH THE WINDWARD PASSAGE TO JUST W OF
THE CAYMAN ISLANDS NEAR 19N83W. ISOLATED TO WIDELY SCATTERED
SHOWERS ARE SEEN NEAR THE BOUNDARY...MOSTLY W OF THE CAYMANS.
HIGH PRES WILL BUILD N OF THE AREA THIS WEEKEND...ALLOWING TRADE
WINDS TO INCREASE OVER THE SOUTH CENTRAL CARIBBEAN AND GULF OF
HONDURAS. ADDITIONALLY...A BROAD ZONE OF LOW LEVEL MOISTURE
ACROSS THE TROPICAL N ATLC S OF 15N WILL MOVE W-NW ACROSS THE
LESSER ANTILLES TODAY AND ACROSS THE E CARIBBEAN THROUGH TONIGHT
TO YIELD WIDELY SCATTERED TO SCATTERED BRIEF PASSING SHOWERS.

...HISPANIOLA...
AN OLD FRONTAL ZONE MENTIONED ABOVE...IN THE FORM OF A
TROUGH...EXTENDS W-SW ACROSS THE NW COAST OF HAITI. TPW
ANIMATIONS SUGGEST THE BEST MOISTURE IS CONVERGING N OF THIS
TROUGH AND ACROSS N COASTAL SECTIONS AND INTO THE TURKS AND
CAICOS ISLANDS. THIS BOUNDARY WILL CONTINUE TO WEAKEN
TODAY...BUT SUFFICIENT LLVL MOISTURE WILL COMBINE WITH
PREVAILING LIGHT TO MODERATE E-SE LLVL FLOW TO FOCUS AFTERNOON
AND EVENING CONVECTION ACROSS N CENTRAL AND NW PORTIONS OF THE
ISLAND. DUE TO A NARROW MID LEVEL RIDGE ACROSS THE AREA...
CONDITIONS ARE NOT EXPECTED TO BE VERY UNSTABLE...AND ONLY
ISOLATED MODERATE TSTMS ARE EXPECTED.

...THE ATLANTIC OCEAN...
A BROAD MID TO UPPER LEVEL TROUGH CONTINUES TO MOVE EASTWARD
OVER THE NW ATLANTIC...REACHING FROM OFFSHORE OF NEW ENGLAND SE
TO A BASE NEAR 28N59W. MIDDLE TO UPPER LEVEL DYNAMICS AHEAD OF
THIS TROUGH ARE INTERACTING WITH A STALLED AND WEAKENING FRONTAL
ZONE...EXTENDING FROM 31N54W TO NW HAITI...TO PRODUCE AN AREA OF
SCATTERED MODERATE CONVECTION WITHIN 180 NM SE OF THE FRONTAL
TROUGH N OF 26N. THE BROAD DEEP LAYERED TROUGH ALSO SUPPORTS A
FRONTAL BOUNDARY THAT HAS SWEPT THROUGH BERMUDA IN THE PAST
COUPLE OF HOURS AND ACROSS N CENTRAL PORTIONS OF THE AREA. A
WEAK 1015 MB HIGH WAS NOTED BETWEEN THESE TWO BOUNDARIES...
CENTERED OVER THE SE BAHAMAS. THE NEW FRONT WILL SHIFT SE
THROUGH FRIDAY AND THEN DRIFT S TO ALONG 24N EARLY SAT AND
STALL...FOLLOWED BY MODERATE RIDGING. THIS WILL INCREASE TRADE
WIND FLOW S OF 22N W OF 60W THIS WEEKEND.

FARTHER EAST...THE ATLC RIDGE EXTENDS FROM 1028 MB HIGH NEAR
34N28W TO PUERTO RICO AND THE WATERS JUST N OF THE MONA PASSAGE.
RECENT ASCAT DATA INDICATED MODERATE TRADEWINDS 15-20 KT
OCCURRING S OF THE RIDGE W OF 30W...AND GENERALLY S OF 18-20N...
WITH SEAS 8 TO 9 FT AS NOTED BY ALTIMETER SATELLITE PASSES
BETWEEN 40W AND 45W. MODERATE TO FRESH N TO NE FLOW IS NOTED
OVER THE FAR EASTERN TROPICAL ATLC WATERS EAST OF 35W TO THE
COAST OF AFRICA. LIMITED TRADE WIND CONVERGENCE IS INHIBITING
SIGNIFICANT CONVECTION ALONG THE ITCZ...ALTHOUGH UPPER RIDGING
ACROSS EQUATORIAL E ATLC AND CENTRAL AFRICA ARE ENHANCING
SHOWERS AND THUNDERSTORMS IN THE DEEP TROPICS SOUTH OF 10N
AND EAST OF 10W.

FOR ADDITIONAL INFORMATION PLEASE VISIT
HTTP://WWW.HURRICANES.GOV/MARINE

$$
STRIPLING



000
AXNT20 KNHC 241107
TWDAT

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
805 AM EDT THU APR 24 2014

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL
AMERICA...GULF OF MEXICO...CARIBBEAN SEA...NORTHERN SECTIONS OF
SOUTH AMERICA...AND ATLANTIC OCEAN TO THE AFRICAN COAST FROM THE
EQUATOR TO 32N. THE FOLLOWING INFORMATION IS BASED ON SATELLITE
IMAGERY...WEATHER OBSERVATIONS...RADAR...AND METEOROLOGICAL
ANALYSIS.

BASED ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
1045 UTC.

...THE ITCZ/THE MONSOON TROUGH...
THE MONSOON TROUGH EXITS W AFRICA AND PASSES THROUGH COASTAL
SECTIONS OF SENEGAL NEAR 14N16.5W AND ON TO NEAR 02N21W...WHERE
IT TRANSITIONS TO ITCZ. THE ITCZ THEN EXTENDS WESTWARD THROUGH
01N23.5W TO 00N38W TO COASTAL BRAZIL NEAR 01.5S46W. ISOLATED
MODERATE CONVECTION WAS NOTED FROM 03S TO 07N BETWEEN 13W AND
23W...WHILE SCATTERED STRONG CONVECTION WAS NOTED N OF 04N TO
WELL INLAND BETWEEN 10W AND 23W. SCATTERED MODERATE TO STRONG
CONVECTION WAS NOTED FROM 03S TO COASTAL AFRICA BETWEEN 03E AND
08W. ISOLATED MODERATE CELLS WERE OCCURRING IN A NARROW LINE
FROM 60 TO 150 NM N OF THE ITCZ BETWEEN 34W AND 45W.

...DISCUSSION...

...THE GULF OF MEXICO...
MILDLY DIFFLUENT UPPER LEVEL FLOW PREVAILS ACROSS THE W GULF
THIS MORNING AS UPPER RIDGING IS SHIFTING SLOWLY E ACROSS THE E
CENTRAL U.S. AND BROAD TROFFING EXTENDS FROM THE N CENTRAL GULF
S-SW THROUGH THE YUCATAN PENINSULA AND INTO THE TROPICAL EPAC
ALONG 93W. A WEAK MIDDLE LEVEL CYCLONIC VORTEX CAN BE SEEN IN
WATER VAPOR IMAGERY ACROSS THE N CENTRAL GULF NEAR 28N87W AND
SHIFTING EASTWARD...AND IS BECOMING SEPARATED FROM MIDDLE TO
UPPER LEVEL TROFFING ACROSS THE NW ATLC. THIS IS YIELDING DRY
AND GENERALLY STABLE CONDITIONS ALOFT N OF 25N. THE UPPER RIDGE
WILL SHIFT E TO ALONG 80W BY 00Z THIS EVENING...FOLLOWED BY A
DEEP LAYERED TROUGH CURRENTLY SHIFTING E ACROSS THE GREAT PLAINS
AND WILL SHIFT E INTO THE MS VALLEY TODAY. THIS DEEP LAYERED
TROUGH WILL SUPPORT A FRONTAL SYSTEM MOVING SE THROUGH TEXAS
TODAY...THEN SLOW TONIGHT ACROSS SE TEXAS AND NW LOUISIANA.
CURRENTLY...A 1015 MB HIGH IS CENTERED ACROSS THE NE GULF NEAR
27N83.5W...WITH MODERATE SE TO S RETURN FLOW PREVAILING ACROSS W
AND NW PORTIONS. THE HIGH WILL SHIFT E TO THE FLORIDA PENINSULA
TODAY AHEAD OF THE APPROACHING FRONT...AND COLLAPSE. RETURN FLOW
ACROSS ALL BUT SE PORTIONS WILL PROVIDE SUFFICIENT MOISTURE FOR
LATE AFTERNOON AND EVENING CONVECTION ACROSS N AND NW COASTAL
PORTIONS AS UPPER CONDITIONS DESTABILIZE IN ADVANCE OF THE
APPROACHING UPPER TROUGH. THE FRONT IS FORECAST TO STALL LATE
TONIGHT-EARLY FRI MORNING ACROSS THE NORTHERN COASTS AND COASTAL
WATERS ALONG ABOUT 30N...AND WEAKEN.

...THE CARIBBEAN SEA...
A BROAD UPPER RIDGE DOMINATES ALL BUT FAR NW PORTIONS OF THE
CARIBBEAN THIS MORNING...YIELDING MODEST UPPER CONFLUENCE AND
MOSTLY STABLE CONDITIONS ALOFT. THE ATLANTIC RIDGE IS PRESENTLY
CENTERED ACROSS THE NE ATLC AND EXTENDS SW AND WEAKLY TO PUERTO
RICO AND THE NE CARIBBEAN...MAINTAINING GENERALLY LIGHT TO
MODERATE TRADE WINDS ACROSS THE CARIBBEAN BASIN THIS MORNING.
THE EXCEPTION IS ALONG THE COAST OF VENEZUELA...THE ABC ISLANDS
AND NE COLOMBIA...WHERE WINDS TO 20 KT WERE NOTED. ACTIVE DEEP
CONVECTION IS OCCURRING ACROSS MUCH OF N COLOMBIA ATTM AND
SPREADS N INTO THE IMMEDIATE WATERS WITHIN 45 NM OF THE COAST.
AN OLD FRONTAL ZONE PERSISTS FROM THE ATLANTIC W-SW ACROSS THE
NW COAST OF HAITI AND THROUGH THE WINDWARD PASSAGE TO JUST W OF
THE CAYMAN ISLANDS NEAR 19N83W. ISOLATED TO WIDELY SCATTERED
SHOWERS ARE SEEN NEAR THE BOUNDARY...MOSTLY W OF THE CAYMANS.
HIGH PRES WILL BUILD N OF THE AREA THIS WEEKEND...ALLOWING TRADE
WINDS TO INCREASE OVER THE SOUTH CENTRAL CARIBBEAN AND GULF OF
HONDURAS. ADDITIONALLY...A BROAD ZONE OF LOW LEVEL MOISTURE
ACROSS THE TROPICAL N ATLC S OF 15N WILL MOVE W-NW ACROSS THE
LESSER ANTILLES TODAY AND ACROSS THE E CARIBBEAN THROUGH TONIGHT
TO YIELD WIDELY SCATTERED TO SCATTERED BRIEF PASSING SHOWERS.

...HISPANIOLA...
AN OLD FRONTAL ZONE MENTIONED ABOVE...IN THE FORM OF A
TROUGH...EXTENDS W-SW ACROSS THE NW COAST OF HAITI. TPW
ANIMATIONS SUGGEST THE BEST MOISTURE IS CONVERGING N OF THIS
TROUGH AND ACROSS N COASTAL SECTIONS AND INTO THE TURKS AND
CAICOS ISLANDS. THIS BOUNDARY WILL CONTINUE TO WEAKEN
TODAY...BUT SUFFICIENT LLVL MOISTURE WILL COMBINE WITH
PREVAILING LIGHT TO MODERATE E-SE LLVL FLOW TO FOCUS AFTERNOON
AND EVENING CONVECTION ACROSS N CENTRAL AND NW PORTIONS OF THE
ISLAND. DUE TO A NARROW MID LEVEL RIDGE ACROSS THE AREA...
CONDITIONS ARE NOT EXPECTED TO BE VERY UNSTABLE...AND ONLY
ISOLATED MODERATE TSTMS ARE EXPECTED.

...THE ATLANTIC OCEAN...
A BROAD MID TO UPPER LEVEL TROUGH CONTINUES TO MOVE EASTWARD
OVER THE NW ATLANTIC...REACHING FROM OFFSHORE OF NEW ENGLAND SE
TO A BASE NEAR 28N59W. MIDDLE TO UPPER LEVEL DYNAMICS AHEAD OF
THIS TROUGH ARE INTERACTING WITH A STALLED AND WEAKENING FRONTAL
ZONE...EXTENDING FROM 31N54W TO NW HAITI...TO PRODUCE AN AREA OF
SCATTERED MODERATE CONVECTION WITHIN 180 NM SE OF THE FRONTAL
TROUGH N OF 26N. THE BROAD DEEP LAYERED TROUGH ALSO SUPPORTS A
FRONTAL BOUNDARY THAT HAS SWEPT THROUGH BERMUDA IN THE PAST
COUPLE OF HOURS AND ACROSS N CENTRAL PORTIONS OF THE AREA. A
WEAK 1015 MB HIGH WAS NOTED BETWEEN THESE TWO BOUNDARIES...
CENTERED OVER THE SE BAHAMAS. THE NEW FRONT WILL SHIFT SE
THROUGH FRIDAY AND THEN DRIFT S TO ALONG 24N EARLY SAT AND
STALL...FOLLOWED BY MODERATE RIDGING. THIS WILL INCREASE TRADE
WIND FLOW S OF 22N W OF 60W THIS WEEKEND.

FARTHER EAST...THE ATLC RIDGE EXTENDS FROM 1028 MB HIGH NEAR
34N28W TO PUERTO RICO AND THE WATERS JUST N OF THE MONA PASSAGE.
RECENT ASCAT DATA INDICATED MODERATE TRADEWINDS 15-20 KT
OCCURRING S OF THE RIDGE W OF 30W...AND GENERALLY S OF 18-20N...
WITH SEAS 8 TO 9 FT AS NOTED BY ALTIMETER SATELLITE PASSES
BETWEEN 40W AND 45W. MODERATE TO FRESH N TO NE FLOW IS NOTED
OVER THE FAR EASTERN TROPICAL ATLC WATERS EAST OF 35W TO THE
COAST OF AFRICA. LIMITED TRADE WIND CONVERGENCE IS INHIBITING
SIGNIFICANT CONVECTION ALONG THE ITCZ...ALTHOUGH UPPER RIDGING
ACROSS EQUATORIAL E ATLC AND CENTRAL AFRICA ARE ENHANCING
SHOWERS AND THUNDERSTORMS IN THE DEEP TROPICS SOUTH OF 10N
AND EAST OF 10W.

FOR ADDITIONAL INFORMATION PLEASE VISIT
HTTP://WWW.HURRICANES.GOV/MARINE

$$
STRIPLING



000
AXPZ20 KNHC 240911
TWDEP

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC THU APR 24 2014

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND
METEOROLOGICAL ANALYSIS.

BASED ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
0900 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

ITCZ FROM 7N82W TO 8N90W TO 5N118W TO 2N140W. SCATTERED MODERATE
TO STRONG CONVECTION WITHIN 150 NM S OF AXIS FROM 2N-8N AND
WITHIN 90 NM N AND 60 NM S OR AXIS FROM 117W-120W.

...DISCUSSION...

A BROAD UPPER LEVEL RIDGE IS ACROSS THE NW PORTION OF THE
DISCUSSION AREA N OF 20N W OF 120W. AN UPPER LEVEL TROUGH
EXTENDS FROM NORTHERN MEXICO ACROSS CENTRAL BAJA CALIFORNIA SW
TO 21N118W. STRONG SUBSIDENCE WITH DRY AND STABLE AIR AT THE
MIDDLE AND UPPER LEVELS IS FROM 20N-30N BETWEEN 115W-135W. A 75
TO 95 KT JETSTREAM IS FROM 18N117W TO THE COAST OF MEXICO NEAR
21N105W. IN THE DEEP TROPICS AN UPPER LEVEL ANTICYCLONIC
CIRCULATION IS CENTERED NEAR 9N106W. UPPER LEVEL DIFFLUENCE WITH
THE ANTICYCLONE IS ENHANCING CONVECTION FROM 9N-14N BETWEEN
107W-114W.

A LARGE SURFACE RIDGE IS N OF 15N W OF 110W. THE PRES GRADIENT
BETWEEN THE RIDGE AND THE ITCZ IS TIGHT ENOUGH FOR 15-20 KT
TRADE WINDS AND SEAS TO 9 FT IN NW SWELL FROM 8N-20N W OF 120W.
LARGE CROSS EQUATORIAL SLY SWELL WILL SPREAD ACROSS A LARGE
PORTION OF THE AREA MAINLY S OF 15N WITHIN THE NEXT 24 TO 48
HOURS. CURRENTLY THE LARGE SLY SWELL IS CONFINED TO S OF 5S
BETWEEN 105W-125W.

$$
DGS


000
AXPZ20 KNHC 240911
TWDEP

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC THU APR 24 2014

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND
METEOROLOGICAL ANALYSIS.

BASED ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
0900 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

ITCZ FROM 7N82W TO 8N90W TO 5N118W TO 2N140W. SCATTERED MODERATE
TO STRONG CONVECTION WITHIN 150 NM S OF AXIS FROM 2N-8N AND
WITHIN 90 NM N AND 60 NM S OR AXIS FROM 117W-120W.

...DISCUSSION...

A BROAD UPPER LEVEL RIDGE IS ACROSS THE NW PORTION OF THE
DISCUSSION AREA N OF 20N W OF 120W. AN UPPER LEVEL TROUGH
EXTENDS FROM NORTHERN MEXICO ACROSS CENTRAL BAJA CALIFORNIA SW
TO 21N118W. STRONG SUBSIDENCE WITH DRY AND STABLE AIR AT THE
MIDDLE AND UPPER LEVELS IS FROM 20N-30N BETWEEN 115W-135W. A 75
TO 95 KT JETSTREAM IS FROM 18N117W TO THE COAST OF MEXICO NEAR
21N105W. IN THE DEEP TROPICS AN UPPER LEVEL ANTICYCLONIC
CIRCULATION IS CENTERED NEAR 9N106W. UPPER LEVEL DIFFLUENCE WITH
THE ANTICYCLONE IS ENHANCING CONVECTION FROM 9N-14N BETWEEN
107W-114W.

A LARGE SURFACE RIDGE IS N OF 15N W OF 110W. THE PRES GRADIENT
BETWEEN THE RIDGE AND THE ITCZ IS TIGHT ENOUGH FOR 15-20 KT
TRADE WINDS AND SEAS TO 9 FT IN NW SWELL FROM 8N-20N W OF 120W.
LARGE CROSS EQUATORIAL SLY SWELL WILL SPREAD ACROSS A LARGE
PORTION OF THE AREA MAINLY S OF 15N WITHIN THE NEXT 24 TO 48
HOURS. CURRENTLY THE LARGE SLY SWELL IS CONFINED TO S OF 5S
BETWEEN 105W-125W.

$$
DGS



000
AXNT20 KNHC 240556
TWDAT

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
205 AM EDT THU APR 24 2014

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL
AMERICA...GULF OF MEXICO...CARIBBEAN SEA...NORTHERN SECTIONS OF
SOUTH AMERICA...AND ATLANTIC OCEAN TO THE AFRICAN COAST FROM THE
EQUATOR TO 32N. THE FOLLOWING INFORMATION IS BASED ON SATELLITE
IMAGERY...WEATHER OBSERVATIONS...RADAR...AND METEOROLOGICAL
ANALYSIS.

BASED ON 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
0515 UTC.

...THE ITCZ/THE MONSOON TROUGH...

THE MONSOON TROUGH EXITS W AFRICA AND PASSES THROUGH COASTAL
SECTIONS OF SENEGAL NEAR 13N16.5W AND ON TO NEAR 08N20W...WHERE
IT TRANSITIONS TO ITCZ. THE ITCZ THEN EXTENDS WESTWARD THROUGH
01N29W TO 00N40W TO COASTAL BRAZIL NEAR 01.5S46W. WIDELY
SCATTERED MODERATE TO STRONG CONVECTION WAS NOTED FROM 03S TO
05N BETWEEN 13W AND 23W...WHILE SCATTERED STRONG CONVECTION WAS
NOTED N OF 04N TO WELL INLAND BETWEEN 10W AND 14W...AND N OF THE
EQUATOR BETWEEN 05E AND 04W. ISOLATED MODERATE CELLS WERE
OCCURRING IN A NARROW LINE FROM 60 TO 150 NM N OF THE ITCZ
BETWEEN 29W AND 45W.

...DISCUSSION...

...THE GULF OF MEXICO...
MILDLY DIFFLUENT UPPER LEVEL FLOW PREVAILS ACROSS THE GULF THIS
MORNING AS UPPER RIDGING IS SHIFTING SLOWLY E ACROSS THE CENTRAL
U.S. AND BROAD TROFFING EXTENDS FROM THE N CENTRAL GULF S-SW
THROUGH THE BAY OF CAMPECHE AND INTO THE TROPICAL EPAC ALONG
94W. A WEAK MIDDLE LEVEL CYCLONIC VORTEX CAN BE SEEN IN WATER
VAPOR IMAGERY ACROSS THE N CENTRAL GULF NEAR 27N87.5W AND
SHIFTING EASTWARD...AND IS BECOMING SEPARATED FROM MIDDLE TO
UPPER LEVEL TROFFING ACROSS THE NW ATLC. THIS IS YIELDING DRY
AND GENERALLY STABLE CONDITIONS ALOFT N OF 25N. THE UPPER RIDGE
WILL SHIFT E TO ALONG 80W BY 00Z THIS EVENING...FOLLOWED BY A
DEEP LAYERED TROUGH CURRENTLY CROSSING THE ROCKIES TO SHIFT E
INTO THE MS VALLEY. THIS DEEP LAYERED TROUGH WILL SUPPORT A
FRONTAL SYSTEM MOVING SE THROUGH TEXAS TODAY...THEN SLOW TONIGHT
ACROSS SE TEXAS AND NW LOUISIANA. CURRENTLY...A 1015 MB HIGH IS
CENTERED ACROSS THE NE GULF NEAR 27N86.5W...WITH MODERATE SE TO
S RETURN FLOW PREVAILING ACROSS W AND NW PORTIONS. THE HIGH WILL
SHIFT E TO THE FLORIDA PENINSULA TODAY AHEAD OF THE APPROACHING
FRONT...AND COLLAPSE. RETURN FLOW ACROSS ALL BUT SE PORTIONS
WILL PROVIDE SUFFICIENT MOISTURE FOR LATE AFTERNOON AND EVENING
CONVECTION ACROSS N AND NW COASTAL PORTIONS AS UPPER CONDITIONS
DESTABILIZE IN ADVANCE OF THE APPROACHING UPPER TROUGH. THE
FRONT IS FORECAST TO STALL LATE TONIGHT-EARLY FRI MORNING ACROSS
THE NORTHERN COASTS AND COASTAL WATERS ALONG ABOUT 30N...AND
WEAKEN.

...THE CARIBBEAN SEA...
A BROAD UPPER RIDGE DOMINATES ALL BUT FAR NW PORTIONS OF THE
CARIBBEAN THIS MORNING...YIELDING MODEST UPPER CONFLUENCE AND
MOSTLY STABLE CONDITIONS ALOFT. THE ATLANTIC RIDGE IS PRESENTLY
CENTERED ACROSS THE NE ATLC AND EXTENDS SW AND WEAKLY TO PUERTO
RICO AND THE NE CARIBBEAN...MAINTAINING GENERALLY LIGHT TO
MODERATE TRADE WINDS ACROSS THE CARIBBEAN BASIN THIS MORNING.
THE EXCEPTION IS ALONG THE COAST OF VENEZUELA...THE ABC ISLANDS
AND NE COLOMBIA...WHERE WINDS TO 20 KT ARE NOTED. ACTIVE DEEP
CONVECTION IS OCCURRING ACROSS MUCH OF N COLOMBIA ATTM AND
SPREADS N INTO THE IMMEDIATE WATERS WITHIN 45 NM OF THE COAST.
AN OLD FRONTAL ZONE PERSISTS FROM THE ATLANTIC W-SW ACROSS
HISPANIOLA THEN W TO JUST W OF THE CAYMAN ISLANDS NEAR 19N83W.
ISOLATED TO WIDELY SCATTERED SHOWERS ARE SEEN NEAR THE
BOUNDARY...MOSTLY W OF THE CAYMANS. HIGH PRES WILL BUILD N OF
THE AREA THIS WEEKEND...ALLOWING TRADE WINDS TO INCREASE OVER
THE SOUTH CENTRAL CARIBBEAN AND GULF OF HONDURAS.
ADDITIONALLY...A BROAD ZONE OF LOW LEVEL MOISTURE ACROSS THE
TROPICAL N ATLC S OF 15N WILL MOVE W-NW ACROSS THE LESSER
ANTILLES TODAY AND ACROSS THE E CARIBBEAN THROUGH TONIGHT TO
YIELD WIDELY SCATTERED TO SCATTERED BRIEF PASSING SHOWERS.

...HISPANIOLA...
AN OLD FRONTAL ZONE MENTIONED ABOVE...IN THE FORM OF A
TROUGH...EXTENDS W-SW ACROSS THE N HALF OF HISPANIOLA. TPW
ANIMATIONS SUGGEST THE BEST MOISTURE IS CONVERGING N OF THIS
TROUGH AND ACROSS N COASTAL SECTIONS AND THE IMMEDIATE COASTAL
WATERS TO 21N. THIS BOUNDARY WILL CONTINUE TO WEAKEN TODAY...BUT
SUFFICIENT LLVL MOISTURE WILL COMBINE WITH PREVAILING LIGHT TO
MODERATE E-SE LLVL FLOW TO FOCUS AFTERNOON AND EVENING
CONVECTION ACROSS N CENTRAL AND NW PORTIONS OF THE ISLAND. DUE
TO A NARROW MID LEVEL RIDGE ACROSS THE AREA...CONDITIONS ARE NOT
EXPECTED TO BE VERY UNSTABLE...AND ONLY ISOLATED MODERATE TSTMS
ARE EXPECTED. LOOKING AHEAD...THE TRAILING END OF A WEAK COLD
FRONT PASSING EASTWARD TO THE NORTH OF HISPANIOLA WILL DRIFT TO
THE NORTHERN COAST OF HISPANIOLA BY SUNDAY. THIS WILL COINCIDE
WITH THE ARRIVAL OF WEAK TROUGH IN THE MID TO UPPER
LEVELS...ALLOWING FOR INCREASED SHOWERS AND INLAND THUNDERSTORMS
BY SUNDAY.

...THE ATLANTIC OCEAN...
A BROAD MID TO UPPER LEVEL TROUGH CONTINUES TO MOVE EASTWARD
OVER THE NW ATLANTIC...REACHING FROM OFFSHORE OF NEW ENGLAND SE
TO A BASE NEAR 28N64W. MIDDLE TO UPPER LEVEL DYNAMICS AHEAD OF
THIS TROUGH AREA INTERACTING WITH A STALLED AND WEAKENING
FRONTAL ZONE...EXTENDING FROM 31N54W TO NW HAITI...TO PRODUCE AN
AREA OF SCATTERED MODERATE CONVECTION WITHIN 180 NM SE OF THE
FRONTAL TROUGH N OF 26N. THE BROAD DEEP LAYERED TROUGH ALSO
SUPPORTS A FRONTAL BOUNDARY APPROACHING BERMUDA AND N PORTIONS
OF THE AREA...FROM THE NW. A WEAK 1015 MB HIGH WAS NOTED BETWEEN
THESE TWO BOUNDARIES...CENTERED OVER THE SE BAHAMAS. THE NEW
FRONT WILL DRIFT SE ACROSS THE WATERS NORTH OF 25N THROUGH
SATURDAY FOLLOWED BY MODERATE RIDGING. THIS WILL INCREASE TRADE
WIND FLOW S OF 22N W OF 60W THIS WEEKEND.

FARTHER EAST...THE ATLC RIDGE EXTENDS FROM 1029 MB HIGH NEAR
34N30W TO PUERTO RICO AND THE WATERS JUST N OF THE MONA PASSAGE.
RECENT ASCAT DATA INDICATED MODERATE TRADEWINDS 15-20 KT
OCCURRING S OF THE RIDGE W OF 30W...AND GENERALLY S OF 18-20N...
WITH SEAS 8 TO 9 FT AS NOTED BY ALTIMETER SATELLITE PASSES
BETWEEN 40W AND 45W. MODERATE TO FRESH N TO NE FLOW IS NOTED
OVER THE FAR EASTERN TROPICAL ATLC WATERS EAST OF 35W TO THE
COAST OF AFRICA. MINIMAL TRADE WIND CONVERGENCE IS INHIBITING
SIGNIFICANT CONVECTION ALONG THE ITCZ...ALTHOUGH UPPER RIDGING
ACROSS EQUATORIAL E ATLC AND CENTRAL AFRICA ARE ENHANCING
SHOWERS AND THUNDERSTORMS IN THE DEEP TROPICS SOUTH OF 10N EAST
OF 20W.

FOR ADDITIONAL INFORMATION PLEASE VISIT
HTTP://WWW.HURRICANES.GOV/MARINE

$$
STRIPLING



000
AXNT20 KNHC 240556
TWDAT

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
205 AM EDT THU APR 24 2014

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL
AMERICA...GULF OF MEXICO...CARIBBEAN SEA...NORTHERN SECTIONS OF
SOUTH AMERICA...AND ATLANTIC OCEAN TO THE AFRICAN COAST FROM THE
EQUATOR TO 32N. THE FOLLOWING INFORMATION IS BASED ON SATELLITE
IMAGERY...WEATHER OBSERVATIONS...RADAR...AND METEOROLOGICAL
ANALYSIS.

BASED ON 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
0515 UTC.

...THE ITCZ/THE MONSOON TROUGH...

THE MONSOON TROUGH EXITS W AFRICA AND PASSES THROUGH COASTAL
SECTIONS OF SENEGAL NEAR 13N16.5W AND ON TO NEAR 08N20W...WHERE
IT TRANSITIONS TO ITCZ. THE ITCZ THEN EXTENDS WESTWARD THROUGH
01N29W TO 00N40W TO COASTAL BRAZIL NEAR 01.5S46W. WIDELY
SCATTERED MODERATE TO STRONG CONVECTION WAS NOTED FROM 03S TO
05N BETWEEN 13W AND 23W...WHILE SCATTERED STRONG CONVECTION WAS
NOTED N OF 04N TO WELL INLAND BETWEEN 10W AND 14W...AND N OF THE
EQUATOR BETWEEN 05E AND 04W. ISOLATED MODERATE CELLS WERE
OCCURRING IN A NARROW LINE FROM 60 TO 150 NM N OF THE ITCZ
BETWEEN 29W AND 45W.

...DISCUSSION...

...THE GULF OF MEXICO...
MILDLY DIFFLUENT UPPER LEVEL FLOW PREVAILS ACROSS THE GULF THIS
MORNING AS UPPER RIDGING IS SHIFTING SLOWLY E ACROSS THE CENTRAL
U.S. AND BROAD TROFFING EXTENDS FROM THE N CENTRAL GULF S-SW
THROUGH THE BAY OF CAMPECHE AND INTO THE TROPICAL EPAC ALONG
94W. A WEAK MIDDLE LEVEL CYCLONIC VORTEX CAN BE SEEN IN WATER
VAPOR IMAGERY ACROSS THE N CENTRAL GULF NEAR 27N87.5W AND
SHIFTING EASTWARD...AND IS BECOMING SEPARATED FROM MIDDLE TO
UPPER LEVEL TROFFING ACROSS THE NW ATLC. THIS IS YIELDING DRY
AND GENERALLY STABLE CONDITIONS ALOFT N OF 25N. THE UPPER RIDGE
WILL SHIFT E TO ALONG 80W BY 00Z THIS EVENING...FOLLOWED BY A
DEEP LAYERED TROUGH CURRENTLY CROSSING THE ROCKIES TO SHIFT E
INTO THE MS VALLEY. THIS DEEP LAYERED TROUGH WILL SUPPORT A
FRONTAL SYSTEM MOVING SE THROUGH TEXAS TODAY...THEN SLOW TONIGHT
ACROSS SE TEXAS AND NW LOUISIANA. CURRENTLY...A 1015 MB HIGH IS
CENTERED ACROSS THE NE GULF NEAR 27N86.5W...WITH MODERATE SE TO
S RETURN FLOW PREVAILING ACROSS W AND NW PORTIONS. THE HIGH WILL
SHIFT E TO THE FLORIDA PENINSULA TODAY AHEAD OF THE APPROACHING
FRONT...AND COLLAPSE. RETURN FLOW ACROSS ALL BUT SE PORTIONS
WILL PROVIDE SUFFICIENT MOISTURE FOR LATE AFTERNOON AND EVENING
CONVECTION ACROSS N AND NW COASTAL PORTIONS AS UPPER CONDITIONS
DESTABILIZE IN ADVANCE OF THE APPROACHING UPPER TROUGH. THE
FRONT IS FORECAST TO STALL LATE TONIGHT-EARLY FRI MORNING ACROSS
THE NORTHERN COASTS AND COASTAL WATERS ALONG ABOUT 30N...AND
WEAKEN.

...THE CARIBBEAN SEA...
A BROAD UPPER RIDGE DOMINATES ALL BUT FAR NW PORTIONS OF THE
CARIBBEAN THIS MORNING...YIELDING MODEST UPPER CONFLUENCE AND
MOSTLY STABLE CONDITIONS ALOFT. THE ATLANTIC RIDGE IS PRESENTLY
CENTERED ACROSS THE NE ATLC AND EXTENDS SW AND WEAKLY TO PUERTO
RICO AND THE NE CARIBBEAN...MAINTAINING GENERALLY LIGHT TO
MODERATE TRADE WINDS ACROSS THE CARIBBEAN BASIN THIS MORNING.
THE EXCEPTION IS ALONG THE COAST OF VENEZUELA...THE ABC ISLANDS
AND NE COLOMBIA...WHERE WINDS TO 20 KT ARE NOTED. ACTIVE DEEP
CONVECTION IS OCCURRING ACROSS MUCH OF N COLOMBIA ATTM AND
SPREADS N INTO THE IMMEDIATE WATERS WITHIN 45 NM OF THE COAST.
AN OLD FRONTAL ZONE PERSISTS FROM THE ATLANTIC W-SW ACROSS
HISPANIOLA THEN W TO JUST W OF THE CAYMAN ISLANDS NEAR 19N83W.
ISOLATED TO WIDELY SCATTERED SHOWERS ARE SEEN NEAR THE
BOUNDARY...MOSTLY W OF THE CAYMANS. HIGH PRES WILL BUILD N OF
THE AREA THIS WEEKEND...ALLOWING TRADE WINDS TO INCREASE OVER
THE SOUTH CENTRAL CARIBBEAN AND GULF OF HONDURAS.
ADDITIONALLY...A BROAD ZONE OF LOW LEVEL MOISTURE ACROSS THE
TROPICAL N ATLC S OF 15N WILL MOVE W-NW ACROSS THE LESSER
ANTILLES TODAY AND ACROSS THE E CARIBBEAN THROUGH TONIGHT TO
YIELD WIDELY SCATTERED TO SCATTERED BRIEF PASSING SHOWERS.

...HISPANIOLA...
AN OLD FRONTAL ZONE MENTIONED ABOVE...IN THE FORM OF A
TROUGH...EXTENDS W-SW ACROSS THE N HALF OF HISPANIOLA. TPW
ANIMATIONS SUGGEST THE BEST MOISTURE IS CONVERGING N OF THIS
TROUGH AND ACROSS N COASTAL SECTIONS AND THE IMMEDIATE COASTAL
WATERS TO 21N. THIS BOUNDARY WILL CONTINUE TO WEAKEN TODAY...BUT
SUFFICIENT LLVL MOISTURE WILL COMBINE WITH PREVAILING LIGHT TO
MODERATE E-SE LLVL FLOW TO FOCUS AFTERNOON AND EVENING
CONVECTION ACROSS N CENTRAL AND NW PORTIONS OF THE ISLAND. DUE
TO A NARROW MID LEVEL RIDGE ACROSS THE AREA...CONDITIONS ARE NOT
EXPECTED TO BE VERY UNSTABLE...AND ONLY ISOLATED MODERATE TSTMS
ARE EXPECTED. LOOKING AHEAD...THE TRAILING END OF A WEAK COLD
FRONT PASSING EASTWARD TO THE NORTH OF HISPANIOLA WILL DRIFT TO
THE NORTHERN COAST OF HISPANIOLA BY SUNDAY. THIS WILL COINCIDE
WITH THE ARRIVAL OF WEAK TROUGH IN THE MID TO UPPER
LEVELS...ALLOWING FOR INCREASED SHOWERS AND INLAND THUNDERSTORMS
BY SUNDAY.

...THE ATLANTIC OCEAN...
A BROAD MID TO UPPER LEVEL TROUGH CONTINUES TO MOVE EASTWARD
OVER THE NW ATLANTIC...REACHING FROM OFFSHORE OF NEW ENGLAND SE
TO A BASE NEAR 28N64W. MIDDLE TO UPPER LEVEL DYNAMICS AHEAD OF
THIS TROUGH AREA INTERACTING WITH A STALLED AND WEAKENING
FRONTAL ZONE...EXTENDING FROM 31N54W TO NW HAITI...TO PRODUCE AN
AREA OF SCATTERED MODERATE CONVECTION WITHIN 180 NM SE OF THE
FRONTAL TROUGH N OF 26N. THE BROAD DEEP LAYERED TROUGH ALSO
SUPPORTS A FRONTAL BOUNDARY APPROACHING BERMUDA AND N PORTIONS
OF THE AREA...FROM THE NW. A WEAK 1015 MB HIGH WAS NOTED BETWEEN
THESE TWO BOUNDARIES...CENTERED OVER THE SE BAHAMAS. THE NEW
FRONT WILL DRIFT SE ACROSS THE WATERS NORTH OF 25N THROUGH
SATURDAY FOLLOWED BY MODERATE RIDGING. THIS WILL INCREASE TRADE
WIND FLOW S OF 22N W OF 60W THIS WEEKEND.

FARTHER EAST...THE ATLC RIDGE EXTENDS FROM 1029 MB HIGH NEAR
34N30W TO PUERTO RICO AND THE WATERS JUST N OF THE MONA PASSAGE.
RECENT ASCAT DATA INDICATED MODERATE TRADEWINDS 15-20 KT
OCCURRING S OF THE RIDGE W OF 30W...AND GENERALLY S OF 18-20N...
WITH SEAS 8 TO 9 FT AS NOTED BY ALTIMETER SATELLITE PASSES
BETWEEN 40W AND 45W. MODERATE TO FRESH N TO NE FLOW IS NOTED
OVER THE FAR EASTERN TROPICAL ATLC WATERS EAST OF 35W TO THE
COAST OF AFRICA. MINIMAL TRADE WIND CONVERGENCE IS INHIBITING
SIGNIFICANT CONVECTION ALONG THE ITCZ...ALTHOUGH UPPER RIDGING
ACROSS EQUATORIAL E ATLC AND CENTRAL AFRICA ARE ENHANCING
SHOWERS AND THUNDERSTORMS IN THE DEEP TROPICS SOUTH OF 10N EAST
OF 20W.

FOR ADDITIONAL INFORMATION PLEASE VISIT
HTTP://WWW.HURRICANES.GOV/MARINE

$$
STRIPLING



000
AXNT20 KNHC 240556
TWDAT

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
205 AM EDT THU APR 24 2014

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL
AMERICA...GULF OF MEXICO...CARIBBEAN SEA...NORTHERN SECTIONS OF
SOUTH AMERICA...AND ATLANTIC OCEAN TO THE AFRICAN COAST FROM THE
EQUATOR TO 32N. THE FOLLOWING INFORMATION IS BASED ON SATELLITE
IMAGERY...WEATHER OBSERVATIONS...RADAR...AND METEOROLOGICAL
ANALYSIS.

BASED ON 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
0515 UTC.

...THE ITCZ/THE MONSOON TROUGH...

THE MONSOON TROUGH EXITS W AFRICA AND PASSES THROUGH COASTAL
SECTIONS OF SENEGAL NEAR 13N16.5W AND ON TO NEAR 08N20W...WHERE
IT TRANSITIONS TO ITCZ. THE ITCZ THEN EXTENDS WESTWARD THROUGH
01N29W TO 00N40W TO COASTAL BRAZIL NEAR 01.5S46W. WIDELY
SCATTERED MODERATE TO STRONG CONVECTION WAS NOTED FROM 03S TO
05N BETWEEN 13W AND 23W...WHILE SCATTERED STRONG CONVECTION WAS
NOTED N OF 04N TO WELL INLAND BETWEEN 10W AND 14W...AND N OF THE
EQUATOR BETWEEN 05E AND 04W. ISOLATED MODERATE CELLS WERE
OCCURRING IN A NARROW LINE FROM 60 TO 150 NM N OF THE ITCZ
BETWEEN 29W AND 45W.

...DISCUSSION...

...THE GULF OF MEXICO...
MILDLY DIFFLUENT UPPER LEVEL FLOW PREVAILS ACROSS THE GULF THIS
MORNING AS UPPER RIDGING IS SHIFTING SLOWLY E ACROSS THE CENTRAL
U.S. AND BROAD TROFFING EXTENDS FROM THE N CENTRAL GULF S-SW
THROUGH THE BAY OF CAMPECHE AND INTO THE TROPICAL EPAC ALONG
94W. A WEAK MIDDLE LEVEL CYCLONIC VORTEX CAN BE SEEN IN WATER
VAPOR IMAGERY ACROSS THE N CENTRAL GULF NEAR 27N87.5W AND
SHIFTING EASTWARD...AND IS BECOMING SEPARATED FROM MIDDLE TO
UPPER LEVEL TROFFING ACROSS THE NW ATLC. THIS IS YIELDING DRY
AND GENERALLY STABLE CONDITIONS ALOFT N OF 25N. THE UPPER RIDGE
WILL SHIFT E TO ALONG 80W BY 00Z THIS EVENING...FOLLOWED BY A
DEEP LAYERED TROUGH CURRENTLY CROSSING THE ROCKIES TO SHIFT E
INTO THE MS VALLEY. THIS DEEP LAYERED TROUGH WILL SUPPORT A
FRONTAL SYSTEM MOVING SE THROUGH TEXAS TODAY...THEN SLOW TONIGHT
ACROSS SE TEXAS AND NW LOUISIANA. CURRENTLY...A 1015 MB HIGH IS
CENTERED ACROSS THE NE GULF NEAR 27N86.5W...WITH MODERATE SE TO
S RETURN FLOW PREVAILING ACROSS W AND NW PORTIONS. THE HIGH WILL
SHIFT E TO THE FLORIDA PENINSULA TODAY AHEAD OF THE APPROACHING
FRONT...AND COLLAPSE. RETURN FLOW ACROSS ALL BUT SE PORTIONS
WILL PROVIDE SUFFICIENT MOISTURE FOR LATE AFTERNOON AND EVENING
CONVECTION ACROSS N AND NW COASTAL PORTIONS AS UPPER CONDITIONS
DESTABILIZE IN ADVANCE OF THE APPROACHING UPPER TROUGH. THE
FRONT IS FORECAST TO STALL LATE TONIGHT-EARLY FRI MORNING ACROSS
THE NORTHERN COASTS AND COASTAL WATERS ALONG ABOUT 30N...AND
WEAKEN.

...THE CARIBBEAN SEA...
A BROAD UPPER RIDGE DOMINATES ALL BUT FAR NW PORTIONS OF THE
CARIBBEAN THIS MORNING...YIELDING MODEST UPPER CONFLUENCE AND
MOSTLY STABLE CONDITIONS ALOFT. THE ATLANTIC RIDGE IS PRESENTLY
CENTERED ACROSS THE NE ATLC AND EXTENDS SW AND WEAKLY TO PUERTO
RICO AND THE NE CARIBBEAN...MAINTAINING GENERALLY LIGHT TO
MODERATE TRADE WINDS ACROSS THE CARIBBEAN BASIN THIS MORNING.
THE EXCEPTION IS ALONG THE COAST OF VENEZUELA...THE ABC ISLANDS
AND NE COLOMBIA...WHERE WINDS TO 20 KT ARE NOTED. ACTIVE DEEP
CONVECTION IS OCCURRING ACROSS MUCH OF N COLOMBIA ATTM AND
SPREADS N INTO THE IMMEDIATE WATERS WITHIN 45 NM OF THE COAST.
AN OLD FRONTAL ZONE PERSISTS FROM THE ATLANTIC W-SW ACROSS
HISPANIOLA THEN W TO JUST W OF THE CAYMAN ISLANDS NEAR 19N83W.
ISOLATED TO WIDELY SCATTERED SHOWERS ARE SEEN NEAR THE
BOUNDARY...MOSTLY W OF THE CAYMANS. HIGH PRES WILL BUILD N OF
THE AREA THIS WEEKEND...ALLOWING TRADE WINDS TO INCREASE OVER
THE SOUTH CENTRAL CARIBBEAN AND GULF OF HONDURAS.
ADDITIONALLY...A BROAD ZONE OF LOW LEVEL MOISTURE ACROSS THE
TROPICAL N ATLC S OF 15N WILL MOVE W-NW ACROSS THE LESSER
ANTILLES TODAY AND ACROSS THE E CARIBBEAN THROUGH TONIGHT TO
YIELD WIDELY SCATTERED TO SCATTERED BRIEF PASSING SHOWERS.

...HISPANIOLA...
AN OLD FRONTAL ZONE MENTIONED ABOVE...IN THE FORM OF A
TROUGH...EXTENDS W-SW ACROSS THE N HALF OF HISPANIOLA. TPW
ANIMATIONS SUGGEST THE BEST MOISTURE IS CONVERGING N OF THIS
TROUGH AND ACROSS N COASTAL SECTIONS AND THE IMMEDIATE COASTAL
WATERS TO 21N. THIS BOUNDARY WILL CONTINUE TO WEAKEN TODAY...BUT
SUFFICIENT LLVL MOISTURE WILL COMBINE WITH PREVAILING LIGHT TO
MODERATE E-SE LLVL FLOW TO FOCUS AFTERNOON AND EVENING
CONVECTION ACROSS N CENTRAL AND NW PORTIONS OF THE ISLAND. DUE
TO A NARROW MID LEVEL RIDGE ACROSS THE AREA...CONDITIONS ARE NOT
EXPECTED TO BE VERY UNSTABLE...AND ONLY ISOLATED MODERATE TSTMS
ARE EXPECTED. LOOKING AHEAD...THE TRAILING END OF A WEAK COLD
FRONT PASSING EASTWARD TO THE NORTH OF HISPANIOLA WILL DRIFT TO
THE NORTHERN COAST OF HISPANIOLA BY SUNDAY. THIS WILL COINCIDE
WITH THE ARRIVAL OF WEAK TROUGH IN THE MID TO UPPER
LEVELS...ALLOWING FOR INCREASED SHOWERS AND INLAND THUNDERSTORMS
BY SUNDAY.

...THE ATLANTIC OCEAN...
A BROAD MID TO UPPER LEVEL TROUGH CONTINUES TO MOVE EASTWARD
OVER THE NW ATLANTIC...REACHING FROM OFFSHORE OF NEW ENGLAND SE
TO A BASE NEAR 28N64W. MIDDLE TO UPPER LEVEL DYNAMICS AHEAD OF
THIS TROUGH AREA INTERACTING WITH A STALLED AND WEAKENING
FRONTAL ZONE...EXTENDING FROM 31N54W TO NW HAITI...TO PRODUCE AN
AREA OF SCATTERED MODERATE CONVECTION WITHIN 180 NM SE OF THE
FRONTAL TROUGH N OF 26N. THE BROAD DEEP LAYERED TROUGH ALSO
SUPPORTS A FRONTAL BOUNDARY APPROACHING BERMUDA AND N PORTIONS
OF THE AREA...FROM THE NW. A WEAK 1015 MB HIGH WAS NOTED BETWEEN
THESE TWO BOUNDARIES...CENTERED OVER THE SE BAHAMAS. THE NEW
FRONT WILL DRIFT SE ACROSS THE WATERS NORTH OF 25N THROUGH
SATURDAY FOLLOWED BY MODERATE RIDGING. THIS WILL INCREASE TRADE
WIND FLOW S OF 22N W OF 60W THIS WEEKEND.

FARTHER EAST...THE ATLC RIDGE EXTENDS FROM 1029 MB HIGH NEAR
34N30W TO PUERTO RICO AND THE WATERS JUST N OF THE MONA PASSAGE.
RECENT ASCAT DATA INDICATED MODERATE TRADEWINDS 15-20 KT
OCCURRING S OF THE RIDGE W OF 30W...AND GENERALLY S OF 18-20N...
WITH SEAS 8 TO 9 FT AS NOTED BY ALTIMETER SATELLITE PASSES
BETWEEN 40W AND 45W. MODERATE TO FRESH N TO NE FLOW IS NOTED
OVER THE FAR EASTERN TROPICAL ATLC WATERS EAST OF 35W TO THE
COAST OF AFRICA. MINIMAL TRADE WIND CONVERGENCE IS INHIBITING
SIGNIFICANT CONVECTION ALONG THE ITCZ...ALTHOUGH UPPER RIDGING
ACROSS EQUATORIAL E ATLC AND CENTRAL AFRICA ARE ENHANCING
SHOWERS AND THUNDERSTORMS IN THE DEEP TROPICS SOUTH OF 10N EAST
OF 20W.

FOR ADDITIONAL INFORMATION PLEASE VISIT
HTTP://WWW.HURRICANES.GOV/MARINE

$$
STRIPLING



000
AXNT20 KNHC 240556
TWDAT

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
205 AM EDT THU APR 24 2014

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL
AMERICA...GULF OF MEXICO...CARIBBEAN SEA...NORTHERN SECTIONS OF
SOUTH AMERICA...AND ATLANTIC OCEAN TO THE AFRICAN COAST FROM THE
EQUATOR TO 32N. THE FOLLOWING INFORMATION IS BASED ON SATELLITE
IMAGERY...WEATHER OBSERVATIONS...RADAR...AND METEOROLOGICAL
ANALYSIS.

BASED ON 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
0515 UTC.

...THE ITCZ/THE MONSOON TROUGH...

THE MONSOON TROUGH EXITS W AFRICA AND PASSES THROUGH COASTAL
SECTIONS OF SENEGAL NEAR 13N16.5W AND ON TO NEAR 08N20W...WHERE
IT TRANSITIONS TO ITCZ. THE ITCZ THEN EXTENDS WESTWARD THROUGH
01N29W TO 00N40W TO COASTAL BRAZIL NEAR 01.5S46W. WIDELY
SCATTERED MODERATE TO STRONG CONVECTION WAS NOTED FROM 03S TO
05N BETWEEN 13W AND 23W...WHILE SCATTERED STRONG CONVECTION WAS
NOTED N OF 04N TO WELL INLAND BETWEEN 10W AND 14W...AND N OF THE
EQUATOR BETWEEN 05E AND 04W. ISOLATED MODERATE CELLS WERE
OCCURRING IN A NARROW LINE FROM 60 TO 150 NM N OF THE ITCZ
BETWEEN 29W AND 45W.

...DISCUSSION...

...THE GULF OF MEXICO...
MILDLY DIFFLUENT UPPER LEVEL FLOW PREVAILS ACROSS THE GULF THIS
MORNING AS UPPER RIDGING IS SHIFTING SLOWLY E ACROSS THE CENTRAL
U.S. AND BROAD TROFFING EXTENDS FROM THE N CENTRAL GULF S-SW
THROUGH THE BAY OF CAMPECHE AND INTO THE TROPICAL EPAC ALONG
94W. A WEAK MIDDLE LEVEL CYCLONIC VORTEX CAN BE SEEN IN WATER
VAPOR IMAGERY ACROSS THE N CENTRAL GULF NEAR 27N87.5W AND
SHIFTING EASTWARD...AND IS BECOMING SEPARATED FROM MIDDLE TO
UPPER LEVEL TROFFING ACROSS THE NW ATLC. THIS IS YIELDING DRY
AND GENERALLY STABLE CONDITIONS ALOFT N OF 25N. THE UPPER RIDGE
WILL SHIFT E TO ALONG 80W BY 00Z THIS EVENING...FOLLOWED BY A
DEEP LAYERED TROUGH CURRENTLY CROSSING THE ROCKIES TO SHIFT E
INTO THE MS VALLEY. THIS DEEP LAYERED TROUGH WILL SUPPORT A
FRONTAL SYSTEM MOVING SE THROUGH TEXAS TODAY...THEN SLOW TONIGHT
ACROSS SE TEXAS AND NW LOUISIANA. CURRENTLY...A 1015 MB HIGH IS
CENTERED ACROSS THE NE GULF NEAR 27N86.5W...WITH MODERATE SE TO
S RETURN FLOW PREVAILING ACROSS W AND NW PORTIONS. THE HIGH WILL
SHIFT E TO THE FLORIDA PENINSULA TODAY AHEAD OF THE APPROACHING
FRONT...AND COLLAPSE. RETURN FLOW ACROSS ALL BUT SE PORTIONS
WILL PROVIDE SUFFICIENT MOISTURE FOR LATE AFTERNOON AND EVENING
CONVECTION ACROSS N AND NW COASTAL PORTIONS AS UPPER CONDITIONS
DESTABILIZE IN ADVANCE OF THE APPROACHING UPPER TROUGH. THE
FRONT IS FORECAST TO STALL LATE TONIGHT-EARLY FRI MORNING ACROSS
THE NORTHERN COASTS AND COASTAL WATERS ALONG ABOUT 30N...AND
WEAKEN.

...THE CARIBBEAN SEA...
A BROAD UPPER RIDGE DOMINATES ALL BUT FAR NW PORTIONS OF THE
CARIBBEAN THIS MORNING...YIELDING MODEST UPPER CONFLUENCE AND
MOSTLY STABLE CONDITIONS ALOFT. THE ATLANTIC RIDGE IS PRESENTLY
CENTERED ACROSS THE NE ATLC AND EXTENDS SW AND WEAKLY TO PUERTO
RICO AND THE NE CARIBBEAN...MAINTAINING GENERALLY LIGHT TO
MODERATE TRADE WINDS ACROSS THE CARIBBEAN BASIN THIS MORNING.
THE EXCEPTION IS ALONG THE COAST OF VENEZUELA...THE ABC ISLANDS
AND NE COLOMBIA...WHERE WINDS TO 20 KT ARE NOTED. ACTIVE DEEP
CONVECTION IS OCCURRING ACROSS MUCH OF N COLOMBIA ATTM AND
SPREADS N INTO THE IMMEDIATE WATERS WITHIN 45 NM OF THE COAST.
AN OLD FRONTAL ZONE PERSISTS FROM THE ATLANTIC W-SW ACROSS
HISPANIOLA THEN W TO JUST W OF THE CAYMAN ISLANDS NEAR 19N83W.
ISOLATED TO WIDELY SCATTERED SHOWERS ARE SEEN NEAR THE
BOUNDARY...MOSTLY W OF THE CAYMANS. HIGH PRES WILL BUILD N OF
THE AREA THIS WEEKEND...ALLOWING TRADE WINDS TO INCREASE OVER
THE SOUTH CENTRAL CARIBBEAN AND GULF OF HONDURAS.
ADDITIONALLY...A BROAD ZONE OF LOW LEVEL MOISTURE ACROSS THE
TROPICAL N ATLC S OF 15N WILL MOVE W-NW ACROSS THE LESSER
ANTILLES TODAY AND ACROSS THE E CARIBBEAN THROUGH TONIGHT TO
YIELD WIDELY SCATTERED TO SCATTERED BRIEF PASSING SHOWERS.

...HISPANIOLA...
AN OLD FRONTAL ZONE MENTIONED ABOVE...IN THE FORM OF A
TROUGH...EXTENDS W-SW ACROSS THE N HALF OF HISPANIOLA. TPW
ANIMATIONS SUGGEST THE BEST MOISTURE IS CONVERGING N OF THIS
TROUGH AND ACROSS N COASTAL SECTIONS AND THE IMMEDIATE COASTAL
WATERS TO 21N. THIS BOUNDARY WILL CONTINUE TO WEAKEN TODAY...BUT
SUFFICIENT LLVL MOISTURE WILL COMBINE WITH PREVAILING LIGHT TO
MODERATE E-SE LLVL FLOW TO FOCUS AFTERNOON AND EVENING
CONVECTION ACROSS N CENTRAL AND NW PORTIONS OF THE ISLAND. DUE
TO A NARROW MID LEVEL RIDGE ACROSS THE AREA...CONDITIONS ARE NOT
EXPECTED TO BE VERY UNSTABLE...AND ONLY ISOLATED MODERATE TSTMS
ARE EXPECTED. LOOKING AHEAD...THE TRAILING END OF A WEAK COLD
FRONT PASSING EASTWARD TO THE NORTH OF HISPANIOLA WILL DRIFT TO
THE NORTHERN COAST OF HISPANIOLA BY SUNDAY. THIS WILL COINCIDE
WITH THE ARRIVAL OF WEAK TROUGH IN THE MID TO UPPER
LEVELS...ALLOWING FOR INCREASED SHOWERS AND INLAND THUNDERSTORMS
BY SUNDAY.

...THE ATLANTIC OCEAN...
A BROAD MID TO UPPER LEVEL TROUGH CONTINUES TO MOVE EASTWARD
OVER THE NW ATLANTIC...REACHING FROM OFFSHORE OF NEW ENGLAND SE
TO A BASE NEAR 28N64W. MIDDLE TO UPPER LEVEL DYNAMICS AHEAD OF
THIS TROUGH AREA INTERACTING WITH A STALLED AND WEAKENING
FRONTAL ZONE...EXTENDING FROM 31N54W TO NW HAITI...TO PRODUCE AN
AREA OF SCATTERED MODERATE CONVECTION WITHIN 180 NM SE OF THE
FRONTAL TROUGH N OF 26N. THE BROAD DEEP LAYERED TROUGH ALSO
SUPPORTS A FRONTAL BOUNDARY APPROACHING BERMUDA AND N PORTIONS
OF THE AREA...FROM THE NW. A WEAK 1015 MB HIGH WAS NOTED BETWEEN
THESE TWO BOUNDARIES...CENTERED OVER THE SE BAHAMAS. THE NEW
FRONT WILL DRIFT SE ACROSS THE WATERS NORTH OF 25N THROUGH
SATURDAY FOLLOWED BY MODERATE RIDGING. THIS WILL INCREASE TRADE
WIND FLOW S OF 22N W OF 60W THIS WEEKEND.

FARTHER EAST...THE ATLC RIDGE EXTENDS FROM 1029 MB HIGH NEAR
34N30W TO PUERTO RICO AND THE WATERS JUST N OF THE MONA PASSAGE.
RECENT ASCAT DATA INDICATED MODERATE TRADEWINDS 15-20 KT
OCCURRING S OF THE RIDGE W OF 30W...AND GENERALLY S OF 18-20N...
WITH SEAS 8 TO 9 FT AS NOTED BY ALTIMETER SATELLITE PASSES
BETWEEN 40W AND 45W. MODERATE TO FRESH N TO NE FLOW IS NOTED
OVER THE FAR EASTERN TROPICAL ATLC WATERS EAST OF 35W TO THE
COAST OF AFRICA. MINIMAL TRADE WIND CONVERGENCE IS INHIBITING
SIGNIFICANT CONVECTION ALONG THE ITCZ...ALTHOUGH UPPER RIDGING
ACROSS EQUATORIAL E ATLC AND CENTRAL AFRICA ARE ENHANCING
SHOWERS AND THUNDERSTORMS IN THE DEEP TROPICS SOUTH OF 10N EAST
OF 20W.

FOR ADDITIONAL INFORMATION PLEASE VISIT
HTTP://WWW.HURRICANES.GOV/MARINE

$$
STRIPLING



000
AXPZ20 KNHC 240301
TWDEP

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC THU APR 24 2014

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND
METEOROLOGICAL ANALYSIS.

BASED ON 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
0300 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

THE MONSOON TROUGH IS ILL-DEFINED. THE ITCZ AXIS EXTENDS FROM
08N94W TO 05N110W TO 04N140W. SCATTERED MODERATE TO ISOLATED
STRONG CONVECTION IS FROM 02N TO 07N BETWEEN 83W AND 88W...AND
FROM 08N TO 13N BETWEEN 108W AND 113W. SCATTERED MODERATE
CONVECTION IS FROM 08N TO 11N BETWEEN 120W AND 130W.

...DISCUSSION...

ALOFT...AN UPPER LEVEL RIDGE IS OVER THE NW CORNER N OF 20N W OF
127W WITH STRONG SUBSIDENCE. AN UPPER LEVEL TROUGH IS N OF 20N
BETWEEN 110W AND 127W TO INCLUDE OVER BAJA CALIFORNIA. IN THE
DEEP TROPICS...A SMALL UPPER LEVEL HIGH IS CENTERED NEAR
06N133W. A LARGE UPPER LEVEL RIDGE IS S OF 20N BETWEEN 100W AND
130W PRODUCING UPPER LEVEL DIFFLUENCE OVER THE ITCZ AND
ENHANCING CONVECTION BETWEEN 108W AND 130W. FURTHER E...AN UPPER
LEVEL RIDGE IS E OF 90W TO INCLUDE OVER  MOST OF CENTRAL AMERICA
WITH CONSIDERABLE UPPER LEVEL MOISTURE.

ON THE SURFACE...A 1028 MB HIGH PRES LOCATED NEAR 32N139W
EXTENDS A RIDGE AXIS SE ACROSS THE FORECAST WATERS TO NEAR
20N110W. THE HIGH IS EXPECTED MOVE TO 37N151W AND LOOSEN THE
SURFACE PRESSURE GRADIENT. THE TRADEWIND FLOW IS PRESENTLY FROM
10N TO 14N W OF 130W WITH NE TO E WINDS 20 TO 25 KT AND SEAS TO
9 FT IN MIXED NW AND NE SWELL. ELSEWHERE...AN AREA OF WINDS AND
SWELL IS W OF BAJA CALIFORNIA. PRESENTLY N OF 25N E OF 126W
WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN NW SWELL.

LONG PERIOD NW SWELLS...WITH A LEADING EDGE PERIOD OF 17-18
SECONDS WILL MIX WITH SHORTER PERIOD NE SWELL FROM THE TRADEWIND
FLOW AND CROSS EQUATORIAL S SWELL TO GENERATE A LARGE AREA OF 8
TO 10 FT SEAS S OF OF LINE FROM 00N130W TO 02N120W TO 01N110W TO
3.4S102W. BASED ON WAVE WATCH GUIDANCE...THIS SWELL EVENT IS
FORECAST TO REACH THE MEXICAN COAST E OF 110W THU NIGHT...AND
THE SOUTH PORTION OF THE GULF OF CALIFORNIA OR SEA OF CORTEZ
EARLY ON FRI...BRINGING ROUGH SURF CONDITIONS TO THOSE COAST.

WINDS ARE EXPECTED TO PULSE TO 15-20 KT WITH SEAS TO 6 FT ACROSS
THE GULF OF PAPAGAYO DURING THE OVERNIGHT AND EARLY MORNING
HOURS WITH THE ASSISTANCE OF THE NOCTURNAL DRAINAGE FLOW THROUGH
THE FORECAST PERIOD.

$$
FORMOSA



000
AXPZ20 KNHC 240301
TWDEP

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC THU APR 24 2014

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND
METEOROLOGICAL ANALYSIS.

BASED ON 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
0300 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

THE MONSOON TROUGH IS ILL-DEFINED. THE ITCZ AXIS EXTENDS FROM
08N94W TO 05N110W TO 04N140W. SCATTERED MODERATE TO ISOLATED
STRONG CONVECTION IS FROM 02N TO 07N BETWEEN 83W AND 88W...AND
FROM 08N TO 13N BETWEEN 108W AND 113W. SCATTERED MODERATE
CONVECTION IS FROM 08N TO 11N BETWEEN 120W AND 130W.

...DISCUSSION...

ALOFT...AN UPPER LEVEL RIDGE IS OVER THE NW CORNER N OF 20N W OF
127W WITH STRONG SUBSIDENCE. AN UPPER LEVEL TROUGH IS N OF 20N
BETWEEN 110W AND 127W TO INCLUDE OVER BAJA CALIFORNIA. IN THE
DEEP TROPICS...A SMALL UPPER LEVEL HIGH IS CENTERED NEAR
06N133W. A LARGE UPPER LEVEL RIDGE IS S OF 20N BETWEEN 100W AND
130W PRODUCING UPPER LEVEL DIFFLUENCE OVER THE ITCZ AND
ENHANCING CONVECTION BETWEEN 108W AND 130W. FURTHER E...AN UPPER
LEVEL RIDGE IS E OF 90W TO INCLUDE OVER  MOST OF CENTRAL AMERICA
WITH CONSIDERABLE UPPER LEVEL MOISTURE.

ON THE SURFACE...A 1028 MB HIGH PRES LOCATED NEAR 32N139W
EXTENDS A RIDGE AXIS SE ACROSS THE FORECAST WATERS TO NEAR
20N110W. THE HIGH IS EXPECTED MOVE TO 37N151W AND LOOSEN THE
SURFACE PRESSURE GRADIENT. THE TRADEWIND FLOW IS PRESENTLY FROM
10N TO 14N W OF 130W WITH NE TO E WINDS 20 TO 25 KT AND SEAS TO
9 FT IN MIXED NW AND NE SWELL. ELSEWHERE...AN AREA OF WINDS AND
SWELL IS W OF BAJA CALIFORNIA. PRESENTLY N OF 25N E OF 126W
WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN NW SWELL.

LONG PERIOD NW SWELLS...WITH A LEADING EDGE PERIOD OF 17-18
SECONDS WILL MIX WITH SHORTER PERIOD NE SWELL FROM THE TRADEWIND
FLOW AND CROSS EQUATORIAL S SWELL TO GENERATE A LARGE AREA OF 8
TO 10 FT SEAS S OF OF LINE FROM 00N130W TO 02N120W TO 01N110W TO
3.4S102W. BASED ON WAVE WATCH GUIDANCE...THIS SWELL EVENT IS
FORECAST TO REACH THE MEXICAN COAST E OF 110W THU NIGHT...AND
THE SOUTH PORTION OF THE GULF OF CALIFORNIA OR SEA OF CORTEZ
EARLY ON FRI...BRINGING ROUGH SURF CONDITIONS TO THOSE COAST.

WINDS ARE EXPECTED TO PULSE TO 15-20 KT WITH SEAS TO 6 FT ACROSS
THE GULF OF PAPAGAYO DURING THE OVERNIGHT AND EARLY MORNING
HOURS WITH THE ASSISTANCE OF THE NOCTURNAL DRAINAGE FLOW THROUGH
THE FORECAST PERIOD.

$$
FORMOSA


000
AXNT20 KNHC 232326
TWDAT

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
805 PM EDT WED APR 23 2014

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL
AMERICA...GULF OF MEXICO...CARIBBEAN SEA...NORTHERN SECTIONS OF
SOUTH AMERICA...AND ATLANTIC OCEAN TO THE AFRICAN COAST FROM THE
EQUATOR TO 32N. THE FOLLOWING INFORMATION IS BASED ON SATELLITE
IMAGERY...WEATHER OBSERVATIONS...RADAR...AND METEOROLOGICAL
ANALYSIS.

BASED ON 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
2315 UTC.

...THE ITCZ/THE MONSOON TROUGH...

THE MONSOON TROUGH PASSES THROUGH COASTAL SECTIONS OF SENEGAL
NEAR 11N16W AND TERMINATES NEAR 10N20W. THE ITCZ REACHES FROM
NEAR 10N20W TO 02N30W AND TERMINATES NEAR THE MOUTH OF THE
AMAZON RIVER NEAR 00N47W. CONVECTIVE PRECIPITATION...SCATTERED
MODERATE CONVECTION IS NOTED FROM 01N TO 05N BETWEEN 10W AND
15W.

...DISCUSSION...

...THE GULF OF MEXICO...

DEEP LAYER RIDGING IS SHIFTING WEST THROUGH 90W NORTH OF
25N...FOLLOWING A MID TO UPPER LEVEL SHORT WAVE TROUGH THAT
MOVED OFF THE EAST COAST EARLIER THIS MORNING. AN ASSOCIATED
1016 MB SURFACE HIGH IS CENTERED NEAR 27N91W. A WEAK COLD FRONT
HAS BECOME STALLED ALONG THE COAST OVER THE MISSISSIPPI SOUND
AND WILL LIKELY BECOME DIFFUSE THROUGH TONIGHT. OBSERVATIONS
FROM BUOYS AND OIL RIGS ALONG WITH RECENT ASCAT DATA INDICATE
FAIRLY LIGHT WINDS OVER ALMOST ALL OF THE BASIN THIS
AFTERNOON...WITH THE EXCEPTION OF MODERATE SE RETURN FLOW
SETTING UP OVER THE COAST OF TEXAS. A FEW HIGH CLOUDS ARE NOTED
OVER THE EASTERN GULF LEAVING THE REMAINDER OF THE BASIN NEARLY
CLOUD FREE. LOOKING AHEAD...THE HIGH PRES WILL CONTINUE TO SHIFT
EASTWARD THROUGH THE WEEKEND...ALLOWING MODERATE TO FRESH RETURN
FLOW TO INCREASE OVER THE NW GULF BY LATE SATURDAY.

...THE CARIBBEAN SEA...

A WEAKENED SUBTROPICAL RIDGE NORTH OF THE BASIN IS MAINTAINING
GENERALLY LIGHT TO MODERATE TRADE WINDS ACROSS THE CARIBBEAN
BASIN THIS AFTERNOON. THE EXCEPTION IS ALONG THE COAST OF
VENEZUELA AND ABC ISLANDS WHERE WINDS TO 20 KT ARE NOTED. A THIN
CANOPY OF CIRRUS EXTENDS OVER THE WESTERN CARIBBEAN PRODUCED BY
CLUSTERS OF SHOWERS AND THUNDERSTORMS SOUTH OF PANAMA AND ACROSS
NORTHERN SOUTH AMERICA...SPECIFICALLY LARGE AREAS OF MODERATE TO
STRONG THUNDERSTORMS OVER NE COLOMBIA AND NW VENEZUELA. THESE
THUNDERSTORMS ARE MOVING NORTHWARD AND ARE STARTING TO IMPACT
COASTAL AREAS FROM CARTAGENA COLOMBIA THROUGH LAKE MARACAIBO IN
VENEZUELA. A FEW SHOWERS ARE LIKELY OVER EASTERN CARIBBEAN
WITHIN 150 NM DOWNSTREAM OF THE HIGHER PEAKS IN THE WINDWARD
ISLANDS. LOOKING AHEAD...HIGH PRES WILL BUILD N OF THE AREA THIS
WEEKEND...ALLOWING TRADE WINDS TO INCREASE OVER THE SOUTH
CENTRAL CARIBBEAN AND GULF OF HONDURAS.

...HISPANIOLA...

DEEP LAYER MOISTURE IS POOLING ALONG A STALLED SURFACE TROUGH
EXTENDS FROM THE N CENTRAL ATLC ACROSS NW HAITI AND THE WINDWARD
PASSAGE TO SOUTH OF GRAND CAYMAN. UPPER FORCING RELATED TO AN
ACTIVE SOUTHERN STREAM JET EXTENDING NW OF HISPANIOLA OVER
CENTRAL CUBA AND THE BAHAMAS IS ENHANCING AFTERNOON CONVECTION
OVER THE HIGHER TERRAIN OF HISPANIOLA...AS WELL AS OVER EASTERN
CUBA AND JAMAICA. SHOWERS AND THUNDERSTORMS WILL TAPER OFF THIS
EVENING. THE TROUGH WILL BECOME DIFFUSE THROUGH TONIGHT...WITH
SOMEWHAT LESS SHOWER AND THUNDERSTORM ACTIVITY REPEATING OVER
THE NEXT COUPLE OF DAYS. LOOKING AHEAD...THE TRAILING END OF A
WEAK COLD FRONT PASSING EASTWARD TO THE NORTH OF HISPANIOLA WILL
DRIFT TO THE NORTHERN COAST OF HISPANIOLA BY SUNDAY. THIS WILL
COINCIDE WITH THE ARRIVAL OF WEAK TROUGH IN THE MID TO UPPER
LEVELS...ALLOWING FOR INCREASED SHOWERS AND INLAND THUNDERSTORMS
BY SUNDAY.

...THE ATLANTIC OCEAN...

A BROAD MID TO UPPER LEVEL TROUGH CONTINUES TO MOVE EASTWARD
OVER THE NW ATLANTIC...REACHING FROM NEW ENGLAND TO AROUND 27N
WEST OF 70W. THIS IS INTERACTING WITH A STALLED SURFACE
TROUGH...THE REMNANTS OF A COLD FRONT...EXTENDING FROM 31N55W TO
NW HAITI. A FEW SHOWERS ARE POSSIBLE ALONG THIS SURFACE TROUGH.
A FEW SHOWERS AND THUNDERSTORMS ARE EMBEDDED IN LARGE AREAS OF
MID TO UPPER LEVEL CLOUDINESS AHEAD OF THE MID/UPPER TROUGH N OF
25N BETWEEN 70W AND 40W. GENERALLY DRY CONDITIONS PREVAIL WEST
OF 70W. A COLD FRONT NORTH OF THE AREA WILL DRIFT SE ACROSS THE
WATERS NORTH OF 25N THROUGH SATURDAY FOLLOWED BY MODERATE
RIDGING. THIS WILL INCREASE TRADE WIND FLOW S OF 22N W OF 60W
THIS WEEKEND.

FARTHER EAST...ASCAT SATELLITE DATA AND SHIP OBSERVATIONS SHOW A
BROAD SURFACE RIDGE REACHING FROM 32N35W TO THE LEEWARD ISLANDS.
FRESH TO STRONG SOUTHERLY FLOW IS NOTED NORTH OF 25N BETWEEN THE
RIDGE AXIS AND THE SURFACE TROUGH TO THE WEST...WITH SEAS TO 9
FT AS NOTED BY ALTIMETER SATELLITE PASSES. FRESH TRADE WINDS ARE
NOTED SOUTH OF THE RIDGE AXIS...NAMELY SOUTH OF 15N WEST OF 35W.
ALTIMETER SATELLITE PASSES OVER THE PAST SEVERAL HOURS INDICATED
SEAS TO 8 FT IN THIS AREA. MODERATE TO FRESH NE FLOW IS NOTED
OVER THE FAR EASTERN TROPICAL ATLC WATERS EAST OF 35W TO THE
COAST OF AFRICA WITH NO SIGNIFICANT CLOUDINESS NOTED NORTH OF
10N. MINIMAL TRADE WIND CONVERGENCE IS INHIBITING SIGNIFICANT
CONVECTION ALONG THE ITCZ...ALTHOUGH WEAK UPPER DIVERGENCE AHEAD
OF AN APPROACHING UPPER TROUGH IS ENHANCING AREAS OF SHOWERS AND
THUNDERSTORMS IN THE DEEP TROPICS SOUTH OF 10N EAST OF 25W.

FOR ADDITIONAL INFORMATION PLEASE VISIT
HTTP://WWW.HURRICANES.GOV/MARINE

$$
CHRISTENSEN


000
AXNT20 KNHC 232326
TWDAT

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
805 PM EDT WED APR 23 2014

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL
AMERICA...GULF OF MEXICO...CARIBBEAN SEA...NORTHERN SECTIONS OF
SOUTH AMERICA...AND ATLANTIC OCEAN TO THE AFRICAN COAST FROM THE
EQUATOR TO 32N. THE FOLLOWING INFORMATION IS BASED ON SATELLITE
IMAGERY...WEATHER OBSERVATIONS...RADAR...AND METEOROLOGICAL
ANALYSIS.

BASED ON 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
2315 UTC.

...THE ITCZ/THE MONSOON TROUGH...

THE MONSOON TROUGH PASSES THROUGH COASTAL SECTIONS OF SENEGAL
NEAR 11N16W AND TERMINATES NEAR 10N20W. THE ITCZ REACHES FROM
NEAR 10N20W TO 02N30W AND TERMINATES NEAR THE MOUTH OF THE
AMAZON RIVER NEAR 00N47W. CONVECTIVE PRECIPITATION...SCATTERED
MODERATE CONVECTION IS NOTED FROM 01N TO 05N BETWEEN 10W AND
15W.

...DISCUSSION...

...THE GULF OF MEXICO...

DEEP LAYER RIDGING IS SHIFTING WEST THROUGH 90W NORTH OF
25N...FOLLOWING A MID TO UPPER LEVEL SHORT WAVE TROUGH THAT
MOVED OFF THE EAST COAST EARLIER THIS MORNING. AN ASSOCIATED
1016 MB SURFACE HIGH IS CENTERED NEAR 27N91W. A WEAK COLD FRONT
HAS BECOME STALLED ALONG THE COAST OVER THE MISSISSIPPI SOUND
AND WILL LIKELY BECOME DIFFUSE THROUGH TONIGHT. OBSERVATIONS
FROM BUOYS AND OIL RIGS ALONG WITH RECENT ASCAT DATA INDICATE
FAIRLY LIGHT WINDS OVER ALMOST ALL OF THE BASIN THIS
AFTERNOON...WITH THE EXCEPTION OF MODERATE SE RETURN FLOW
SETTING UP OVER THE COAST OF TEXAS. A FEW HIGH CLOUDS ARE NOTED
OVER THE EASTERN GULF LEAVING THE REMAINDER OF THE BASIN NEARLY
CLOUD FREE. LOOKING AHEAD...THE HIGH PRES WILL CONTINUE TO SHIFT
EASTWARD THROUGH THE WEEKEND...ALLOWING MODERATE TO FRESH RETURN
FLOW TO INCREASE OVER THE NW GULF BY LATE SATURDAY.

...THE CARIBBEAN SEA...

A WEAKENED SUBTROPICAL RIDGE NORTH OF THE BASIN IS MAINTAINING
GENERALLY LIGHT TO MODERATE TRADE WINDS ACROSS THE CARIBBEAN
BASIN THIS AFTERNOON. THE EXCEPTION IS ALONG THE COAST OF
VENEZUELA AND ABC ISLANDS WHERE WINDS TO 20 KT ARE NOTED. A THIN
CANOPY OF CIRRUS EXTENDS OVER THE WESTERN CARIBBEAN PRODUCED BY
CLUSTERS OF SHOWERS AND THUNDERSTORMS SOUTH OF PANAMA AND ACROSS
NORTHERN SOUTH AMERICA...SPECIFICALLY LARGE AREAS OF MODERATE TO
STRONG THUNDERSTORMS OVER NE COLOMBIA AND NW VENEZUELA. THESE
THUNDERSTORMS ARE MOVING NORTHWARD AND ARE STARTING TO IMPACT
COASTAL AREAS FROM CARTAGENA COLOMBIA THROUGH LAKE MARACAIBO IN
VENEZUELA. A FEW SHOWERS ARE LIKELY OVER EASTERN CARIBBEAN
WITHIN 150 NM DOWNSTREAM OF THE HIGHER PEAKS IN THE WINDWARD
ISLANDS. LOOKING AHEAD...HIGH PRES WILL BUILD N OF THE AREA THIS
WEEKEND...ALLOWING TRADE WINDS TO INCREASE OVER THE SOUTH
CENTRAL CARIBBEAN AND GULF OF HONDURAS.

...HISPANIOLA...

DEEP LAYER MOISTURE IS POOLING ALONG A STALLED SURFACE TROUGH
EXTENDS FROM THE N CENTRAL ATLC ACROSS NW HAITI AND THE WINDWARD
PASSAGE TO SOUTH OF GRAND CAYMAN. UPPER FORCING RELATED TO AN
ACTIVE SOUTHERN STREAM JET EXTENDING NW OF HISPANIOLA OVER
CENTRAL CUBA AND THE BAHAMAS IS ENHANCING AFTERNOON CONVECTION
OVER THE HIGHER TERRAIN OF HISPANIOLA...AS WELL AS OVER EASTERN
CUBA AND JAMAICA. SHOWERS AND THUNDERSTORMS WILL TAPER OFF THIS
EVENING. THE TROUGH WILL BECOME DIFFUSE THROUGH TONIGHT...WITH
SOMEWHAT LESS SHOWER AND THUNDERSTORM ACTIVITY REPEATING OVER
THE NEXT COUPLE OF DAYS. LOOKING AHEAD...THE TRAILING END OF A
WEAK COLD FRONT PASSING EASTWARD TO THE NORTH OF HISPANIOLA WILL
DRIFT TO THE NORTHERN COAST OF HISPANIOLA BY SUNDAY. THIS WILL
COINCIDE WITH THE ARRIVAL OF WEAK TROUGH IN THE MID TO UPPER
LEVELS...ALLOWING FOR INCREASED SHOWERS AND INLAND THUNDERSTORMS
BY SUNDAY.

...THE ATLANTIC OCEAN...

A BROAD MID TO UPPER LEVEL TROUGH CONTINUES TO MOVE EASTWARD
OVER THE NW ATLANTIC...REACHING FROM NEW ENGLAND TO AROUND 27N
WEST OF 70W. THIS IS INTERACTING WITH A STALLED SURFACE
TROUGH...THE REMNANTS OF A COLD FRONT...EXTENDING FROM 31N55W TO
NW HAITI. A FEW SHOWERS ARE POSSIBLE ALONG THIS SURFACE TROUGH.
A FEW SHOWERS AND THUNDERSTORMS ARE EMBEDDED IN LARGE AREAS OF
MID TO UPPER LEVEL CLOUDINESS AHEAD OF THE MID/UPPER TROUGH N OF
25N BETWEEN 70W AND 40W. GENERALLY DRY CONDITIONS PREVAIL WEST
OF 70W. A COLD FRONT NORTH OF THE AREA WILL DRIFT SE ACROSS THE
WATERS NORTH OF 25N THROUGH SATURDAY FOLLOWED BY MODERATE
RIDGING. THIS WILL INCREASE TRADE WIND FLOW S OF 22N W OF 60W
THIS WEEKEND.

FARTHER EAST...ASCAT SATELLITE DATA AND SHIP OBSERVATIONS SHOW A
BROAD SURFACE RIDGE REACHING FROM 32N35W TO THE LEEWARD ISLANDS.
FRESH TO STRONG SOUTHERLY FLOW IS NOTED NORTH OF 25N BETWEEN THE
RIDGE AXIS AND THE SURFACE TROUGH TO THE WEST...WITH SEAS TO 9
FT AS NOTED BY ALTIMETER SATELLITE PASSES. FRESH TRADE WINDS ARE
NOTED SOUTH OF THE RIDGE AXIS...NAMELY SOUTH OF 15N WEST OF 35W.
ALTIMETER SATELLITE PASSES OVER THE PAST SEVERAL HOURS INDICATED
SEAS TO 8 FT IN THIS AREA. MODERATE TO FRESH NE FLOW IS NOTED
OVER THE FAR EASTERN TROPICAL ATLC WATERS EAST OF 35W TO THE
COAST OF AFRICA WITH NO SIGNIFICANT CLOUDINESS NOTED NORTH OF
10N. MINIMAL TRADE WIND CONVERGENCE IS INHIBITING SIGNIFICANT
CONVECTION ALONG THE ITCZ...ALTHOUGH WEAK UPPER DIVERGENCE AHEAD
OF AN APPROACHING UPPER TROUGH IS ENHANCING AREAS OF SHOWERS AND
THUNDERSTORMS IN THE DEEP TROPICS SOUTH OF 10N EAST OF 25W.

FOR ADDITIONAL INFORMATION PLEASE VISIT
HTTP://WWW.HURRICANES.GOV/MARINE

$$
CHRISTENSEN



000
AXPZ20 KNHC 232123
TWDEP

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC WED APR 23 2014

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND
METEOROLOGICAL ANALYSIS.

BASED ON 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
2100 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

THE MONSOON TROUGH IS ILL-DEFINED. THE ITCZ AXIS EXTENDS FROM
06N91W TO 05N110W TO 04N120W TO 04N140W. SCATTERED MODERATE
CONVECTION IS FROM 03N TO 09N BETWEEN 78W AND 88W. SCATTERED
MODERATE TO ISOLATED STRONG CONVECTION IS FROM 06N TO 12N
BETWEEN 105W AND 130W.

...DISCUSSION...

ALOFT...AN UPPER LEVEL RIDGE IS OVER THE NW CORNER N OF 20N W OF
127W WITH STRONG SUBSIDENCE. AN UPPER LEVEL TROUGH IS N OF 20N
BETWEEN 110W AND 127W TO INCLUDE OVER BAJA CALIFORNIA. IN THE
DEEP TROPICS...A SMALL UPPER LEVEL HIGH IS CENTERED NEAR
06N133W. A LARGE UPPER LEVEL RIDGE IS S OF 20N BETWEEN 100W AND
130W PRODUCING UPPER LEVEL DIFFLUENCE OVER THE ITCZ AND
ENHANCING CONVECTION FROM 06N TO 12N BETWEEN 105W AND 130W.
FURTHER E...AN UPPER LEVEL RIDGE IS E OF 90W TO INCLUDE OVER
MOST OF CENTRAL AMERICA WITH CONSIDERABLE UPPER LEVEL MOISTURE.

ON THE SURFACE...A 1028 MB HIGH PRES LOCATED NEAR 32N139W
EXTENDS A RIDGE AXIS SE ACROSS THE FORECAST WATERS TO NEAR
20N110W. THE HIGH IS EXPECTED MOVE SW TO 30N145W AND LOOSEN THE
SURFACE PRESSURE GRADIENT. THE TRADEWIND FLOW IS PRESENTLY FROM
09N TO 20N W OF 130W AND FROM 11N TO 17N BETWEEN 124W AND 130W
WITH NE TO E WINDS 20 TO 25 KT AND SEAS TO 9 FT. ELSEWHERE...AN
AREA OF WINDS AND SWELL IS W OF BAJA CALIFORNIA. PRESENTLY N OF
25N E OF 126W NW TO N WINDS ARE 20 TO 25 KT WITH SEAS 9 TO 11 FT
IN NW SWELL.

LONG PERIOD NW SWELLS...WITH A LEADING EDGE PERIOD OF 17-18
SECONDS WILL MIX WITH SHORTER PERIOD NE SWELL FROM THE TRADE
WIND FLOW AND CROSS EQUATORIAL S SWELL TO GENERATE A LARGE AREA
OF 8 TO 10 FT SEAS AFFECTING MAINLY THE WATERS E OF 130W AND S
OF LINE FROM 13N130W TO 10N110W TO 3.4S90W BY THU MORNING...AND
E OF 125W AND S OF LINE FROM 15N125W TO 17N110W TO 05N92W BY FRI
MORNING. EXPECT ALSO BUILDING SEAS TO 8 FT E OF THE GALAPAGOS
ISLANDS TO ABOUT 2N.  BASED ON WAVE WATCH GUIDANCE...THIS SWELL
EVENT IS FORECAST TO REACH THE MEXICAN COAST E OF 110W THU
NIGHT...AND THE SOUTH PORTION OF THE GULF OF CALIFORNIA OR SEA
OF CORTEZ EARLY ON FRI...BRINGING ROUGH SURF CONDITIONS TO THOSE
COAST.

WINDS ARE EXPECTED TO PULSE TO 15-20 KT WITH SEAS TO 6 FT ACROSS
THE GULF OF PAPAGAYO DURING THE OVERNIGHT AND EARLY MORNING
HOURS WITH THE ASSISTANCE OF THE NOCTURNAL DRAINAGE FLOW THROUGH
THE FORECAST PERIOD.

$$
FORMOSA



000
AXPZ20 KNHC 232123
TWDEP

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC WED APR 23 2014

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND
METEOROLOGICAL ANALYSIS.

BASED ON 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
2100 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

THE MONSOON TROUGH IS ILL-DEFINED. THE ITCZ AXIS EXTENDS FROM
06N91W TO 05N110W TO 04N120W TO 04N140W. SCATTERED MODERATE
CONVECTION IS FROM 03N TO 09N BETWEEN 78W AND 88W. SCATTERED
MODERATE TO ISOLATED STRONG CONVECTION IS FROM 06N TO 12N
BETWEEN 105W AND 130W.

...DISCUSSION...

ALOFT...AN UPPER LEVEL RIDGE IS OVER THE NW CORNER N OF 20N W OF
127W WITH STRONG SUBSIDENCE. AN UPPER LEVEL TROUGH IS N OF 20N
BETWEEN 110W AND 127W TO INCLUDE OVER BAJA CALIFORNIA. IN THE
DEEP TROPICS...A SMALL UPPER LEVEL HIGH IS CENTERED NEAR
06N133W. A LARGE UPPER LEVEL RIDGE IS S OF 20N BETWEEN 100W AND
130W PRODUCING UPPER LEVEL DIFFLUENCE OVER THE ITCZ AND
ENHANCING CONVECTION FROM 06N TO 12N BETWEEN 105W AND 130W.
FURTHER E...AN UPPER LEVEL RIDGE IS E OF 90W TO INCLUDE OVER
MOST OF CENTRAL AMERICA WITH CONSIDERABLE UPPER LEVEL MOISTURE.

ON THE SURFACE...A 1028 MB HIGH PRES LOCATED NEAR 32N139W
EXTENDS A RIDGE AXIS SE ACROSS THE FORECAST WATERS TO NEAR
20N110W. THE HIGH IS EXPECTED MOVE SW TO 30N145W AND LOOSEN THE
SURFACE PRESSURE GRADIENT. THE TRADEWIND FLOW IS PRESENTLY FROM
09N TO 20N W OF 130W AND FROM 11N TO 17N BETWEEN 124W AND 130W
WITH NE TO E WINDS 20 TO 25 KT AND SEAS TO 9 FT. ELSEWHERE...AN
AREA OF WINDS AND SWELL IS W OF BAJA CALIFORNIA. PRESENTLY N OF
25N E OF 126W NW TO N WINDS ARE 20 TO 25 KT WITH SEAS 9 TO 11 FT
IN NW SWELL.

LONG PERIOD NW SWELLS...WITH A LEADING EDGE PERIOD OF 17-18
SECONDS WILL MIX WITH SHORTER PERIOD NE SWELL FROM THE TRADE
WIND FLOW AND CROSS EQUATORIAL S SWELL TO GENERATE A LARGE AREA
OF 8 TO 10 FT SEAS AFFECTING MAINLY THE WATERS E OF 130W AND S
OF LINE FROM 13N130W TO 10N110W TO 3.4S90W BY THU MORNING...AND
E OF 125W AND S OF LINE FROM 15N125W TO 17N110W TO 05N92W BY FRI
MORNING. EXPECT ALSO BUILDING SEAS TO 8 FT E OF THE GALAPAGOS
ISLANDS TO ABOUT 2N.  BASED ON WAVE WATCH GUIDANCE...THIS SWELL
EVENT IS FORECAST TO REACH THE MEXICAN COAST E OF 110W THU
NIGHT...AND THE SOUTH PORTION OF THE GULF OF CALIFORNIA OR SEA
OF CORTEZ EARLY ON FRI...BRINGING ROUGH SURF CONDITIONS TO THOSE
COAST.

WINDS ARE EXPECTED TO PULSE TO 15-20 KT WITH SEAS TO 6 FT ACROSS
THE GULF OF PAPAGAYO DURING THE OVERNIGHT AND EARLY MORNING
HOURS WITH THE ASSISTANCE OF THE NOCTURNAL DRAINAGE FLOW THROUGH
THE FORECAST PERIOD.

$$
FORMOSA


000
AXNT20 KNHC 231804
TWDAT

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
205 PM EST WED APR 23 2014

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL
AMERICA...GULF OF MEXICO...CARIBBEAN SEA...NORTHERN SECTIONS OF
SOUTH AMERICA...AND ATLANTIC OCEAN TO THE AFRICAN COAST FROM THE
EQUATOR TO 32N. THE FOLLOWING INFORMATION IS BASED ON SATELLITE
IMAGERY...WEATHER OBSERVATIONS...RADAR...AND METEOROLOGICAL
ANALYSIS.

BASED ON 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
1745 UTC.

...THE ITCZ/THE MONSOON TROUGH...

THE MONSOON TROUGH PASSES THROUGH COASTAL SECTIONS OF GUINEA
NEAR 11N14W TO 7N19W. THE ITCZ IS ALONG 3N23W 2N31W AND 1N40W.
CONVECTIVE PRECIPITATION...SCATTERED TO NUMEROUS STRONG FROM THE
EQUATOR TO 4N BETWEEN 47W AND 52W IN THE ATLANTIC OCEAN AND IN
BRAZIL AND IN FRENCH GUIANA. ISOLATED MODERATE IN THE ATLANTIC
OCEAN FROM THE THE EQUATOR TO 5N BETWEEN 22W AND 47W.

A SURFACE TROUGH IS ALONG 7N7W IN THE IVORY COAST...TO 3N16W AND
3N22W. CONVECTIVE PRECIPITATION...SCATTERED TO NUMEROUS STRONG
FROM 2N TO 4N BETWEEN 9W AND 16W. ISOLATED MODERATE FROM THE
EQUATOR TO 3N BETWEEN 16W AND 23W.

...DISCUSSION...

...THE GULF OF MEXICO...

A MIDDLE LEVEL TO UPPER LEVEL TROUGH PASSES THROUGH 32N78W...
CROSSING NORTHERN FLORIDA...AND CONTINUING INTO THE GULF OF
MEXICO NEAR 25N94W. COMPARATIVELY DRIER AIR IN SUBSIDENCE...
APPARENT IN WATER VAPOR IMAGERY...COVERS THE MAJORITY OF THE
GULF OF MEXICO. HIGH LEVEL MOISTURE REMAINS TO THE SOUTH OF 24N
TO THE WEST OF 90W IN THE SOUTHWESTERN CORNER OF THE AREA. A
DISSIPATING STATIONARY FRONT EXTENDS FROM THE FLORIDA PANHANDLE
INTO SOUTHEASTERN LOUISIANA AND EAST TEXAS...TO TEXAS NEAR
29N101W. A COLD FRONT PASSES THROUGH SOUTHERN GEORGIA...INTO
SOUTHWESTERN ALABAMA AND SOUTHERN MISSISSIPPI. A STATIONARY
FRONT CONTINUES FROM SOUTHERN MISSISSIPPI NORTHWESTWARD...
BEYOND CENTRAL LOUISIANA. NO SIGNIFICANT DEEP CONVECTIVE
PRECIPITATION APPEARS IN SATELLITE IMAGERY.

A 1016 MB ANTICYCLONIC CIRCULATION CENTER IS NEAR 26N91W. BROAD
SURFACE ANTICYCLONIC WIND FLOW SPANS THE GULF OF MEXICO.

FOR THE OFFSHORE OIL PLATFORM SITES THAT ARE TO THE NORTH OF 27N
TO THE WEST OF 87W/88W...

LOW CLOUD CEILINGS ARE BEING REPORTED AT THE FOLLOWING ICAO
STATIONS...KVAF AND KSPR WITH A VISIBILITY OF 1 MILE OR LESS AND
FOG. FAIR SKIES/CLEAR SKIES AT OR LOWER THAN 12000 FEET ARE
BEING REPORTED ELSEWHERE.

FOR THE COASTAL PLAINS OF THE U.S.A. FROM THE DEEP SOUTH OF
TEXAS TO FLORIDA...

LOW LEVEL CLOUD CEILINGS COVER WESLACO...MCALLEN...AND EDINBURG
IN THE DEEP SOUTH OF TEXAS...FROM FALFURRIAS TO THE NAVAL AIR
STATION IN KINGSVILLE...FROM VICTORIA/PORT LAVACA/PALACIOS...AND
AROUND THE HOUSTON METROPOLITAN AREA AND SURROUNDING CITIES...
AND IN THE BEAUMONT-PORT ARTHUR AREA...IN SOUTH CENTRAL COASTAL
LOUISIANA AND AROUND THE SOUTHERN SIDE OF LAKE PONTCHARTRAIN...
AND IN COASTAL SECTIONS OF MISSISSIPPI AND ALABAMA. SCATTERED
LOW CLOUDS COVER THE FLORIDA PANHANDLE. A LOW CLOUD CEILING IS
BEING REPORTED IN TALLAHASSEE AND IN BROOKSVILLE. SCATTERED LOW
CLOUDS ARE BEING OBSERVED IN THE TAMPA METROPOLITAN AREA AND
SURROUNDING CITIES.

...THE CARIBBEAN SEA...

AN UPPER LEVEL RIDGE EXTENDS FROM COASTAL SECTIONS OF
VENEZUELA...INTO THE WEST CENTRAL CARIBBEAN SEA...THROUGH COSTA
RICA AND NICARAGUA...INTO THE EASTERN PACIFIC OCEAN. HIGH LEVEL
MOISTURE IS CURVING FROM CENTRAL AMERICA AND COLOMBIA AND
VENEZUELA...INTO THE CARIBBEAN SEA.

BROKEN TO OVERCAST LOW LEVEL AND MIDDLE LEVEL CLOUDS AND
POSSIBLE RAINSHOWERS ARE PRIMARILY...TO THE SOUTH OF 16N TO THE
WEST OF 66W FROM 16N TO 21N BETWEEN 60W AND 65W...AND POSSIBLE
ELSEWHERE ACROSS THE BASIN...IN SURFACE TRADEWIND FLOW.

THE 24-HOUR RAINFALL TOTAL IN INCHES FOR THE PERIOD ENDING AT
23/1200 UTC...ACCORDING TO THE PAN AMERICAN TEMPERATURE AND
PRECIPITATION TABLES...MIATPTPAN/SXCA01 KNHC...IS 0.28 IN
GUADELOUPE..

...HISPANIOLA...

AN UPPER LEVEL RIDGE EXTENDS FROM COASTAL SECTIONS OF
VENEZUELA...INTO THE WEST CENTRAL CARIBBEAN SEA...THROUGH COSTA
RICA AND NICARAGUA...INTO THE EASTERN PACIFIC OCEAN. HIGH LEVEL
MOISTURE IS CURVING FROM CENTRAL AMERICA AND COLOMBIA AND
VENEZUELA...INTO THE CARIBBEAN SEA.

A SURFACE TROUGH CONTINUES FROM 31N56W 26N60W 21N70W...THROUGH
THE WINDWARD PASSAGE TO 19N80W IN THE NORTHWESTERN CORNER OF THE
CARIBBEAN SEA...TO 17N85W. CONVECTIVE PRECIPITATION...BROKEN TO
OVERCAST LOW LEVEL AND MIDDLE LEVEL CLOUDS AND POSSIBLE
RAINSHOWERS ARE FROM 19N TO 23N BETWEEN 58W AND 85W IN
SOUTHEASTERN CUBA.

CONDITIONS AND CURRENT WEATHER FOR THE DOMINICAN REPUBLIC... FEW
LOW LOW LEVEL CLOUDS ARE IN BARAHONA...SANTO DOMINGO...LA
ROMANA...AND PUNTA CANA. SCATTERED LOW LEVEL AND A MIDDLE LEVEL
CLOUD CEILING ARE IN PUERTO PLATA. SCATTERED LOW LEVEL CLOUDS
ARE IN SANTIAGO.

THE GFS MODEL FORECAST FOR 250 MB SHOWS THAT SOUTHWESTERLY TO
WESTERLY WIND FLOW WILL MOVE ACROSS THE AREA...WITH A RIDGE THAT
RUNS FROM NORTHERN COLOMBIA ACROSS CENTRAL AMERICA. THE GFS
MODEL FOR 500 MB SHOWS THAT SOUTHWESTERLY TO WESTERLY WIND FLOW
WILL CROSS HISPANIOLA DURING THE FIRST 24 HOURS OF THE 48 HOUR
FORECAST PERIOD. HISPANIOLA WILL BE IN THE MIDDLE OF AN EASTERN
CARIBBEAN SEA ANTICYCLONIC CIRCULATION CENTER AND A TROUGH.
NORTHWESTERLY TO WESTERLY WIND FLOW WILL MOVE ACROSS THE AREA
WITH THE TROUGH DURING THE REST OF THE 48 HOUR FORECAST PERIOD.
THE GFS MODEL FORECAST FOR 700 MB SHOWS THAT SOUTHERLY TO
SOUTHWESTERLY WIND FLOW WILL CROSS HISPANIOLA...WITH AN ATLANTIC
OCEAN-TO-CARIBBEAN SEA EAST-TO-WEST RIDGE.

...THE ATLANTIC OCEAN...

A MIDDLE LEVEL TO UPPER LEVEL TROUGH PASSES THROUGH 33N56W TO
30N58W. THE TROUGH SUPPORTS A COLD FRONT THAT PASSES THROUGH
32N56W TO 31N56W. BROAD MIDDLE LEVEL TO UPPER LEVEL ANTICYCLONIC
WIND FLOW COVERS THE AREA THAT IS TO THE NORTH OF 15N TO THE
WEST OF 40W. A SURFACE TROUGH CONTINUES FROM 31N56W 26N60W
21N70W...THROUGH THE WINDWARD PASSAGE TO 19N80W IN THE
NORTHWESTERN CORNER OF THE CARIBBEAN SEA...TO 17N85W.
CONVECTIVE PRECIPITATION...SCATTERED MODERATE TO ISOLATED STRONG
WITHIN 60 NM ON EITHER SIDE OF THE LINE THAT PASSES THROUGH
32N53W...TO 28N55W AND 25N59W.

THE 24-HOUR RAINFALL TOTAL IN INCHES FOR THE PERIOD ENDING AT
23/1200 UTC...ACCORDING TO THE PAN AMERICAN TEMPERATURE AND
PRECIPITATION TABLES...MIATPTPAN/SXCA01 KNHC...IS 0.05 IN
BERMUDA.

REMNANTS OF A MIDDLE LEVEL TO UPPER LEVEL TROUGH ARE ALONG
26N15W 18N27W 14N39W. COMPARATIVELY DRIER AIR IN SUBSIDENCE...
APPARENT IN WATER VAPOR IMAGERY...IS WITHIN 240 NM TO THE
NORTHWEST OF 25N15W 20N23W...WITHIN 400 NM TO 600 NM TO THE
NORTHWEST OF THE LINE 20N23W 10N38W...AND IN THE CARIBBEAN SEA
AND THE ATLANTIC OCEAN FROM 10N TO 20N BETWEEN 40W AND THE MONA
PASSAGE.

A 1026 MB HIGH PRESSURE CENTER IS NEAR 28N35W. SURFACE
ANTICYCLONIC WIND FLOW COVERS THE ATLANTIC OCEAN AND THE
CARIBBEAN SEA TO THE NORTH OF 10N BETWEEN AFRICA AND THE
31N56W 17N85W SURFACE TROUGH.

PLEASE READ THE HIGH SEAS FORECAST...MIAHSFAT2/FZNT02 KNHC...FOR
MORE DETAILS ABOUT...A DISSIPATING FRONTAL TROUGH FROM 31N56W TO
22N65W. EXPECT SOUTH TO SOUTHWEST WINDS 20 TO 25 KNOTS AND SEA
HEIGHTS TO 9 FEET TO THE NORTH OF 27N WITHIN 180 NM TO THE EAST
OF THE SURFACE TROUGH. EXPECT WINDS 20 KNOTS OR LESS AND SEA
HEIGHTS TO 9 FEET TO THE WEST OF THE SURFACE TROUGH TO 59W. A
SECOND AREA OF CONCERN CONSISTS OF WINDS 20 KNOTS OR LESS AND
SEA HEIGHTS 8 TO 10 FEET TO THE NORTH OF 25N BETWEEN 35W AND
46W. A THIRD AREA OF CONCERN CONSISTS WINDS 20 KNOTS OR LESS AND
SEA HEIGHTS TO 8 FEET TO THE SOUTH OF 11N BETWEEN 44W AND 50W. A
FOURTH AREA OF CONCERN CONSISTS OF...A COLD FRONT FROM 31N66W TO
29N74W. EXPECT SOUTHWEST TO WEST WINDS 20 TO 25 KNOTS AND SEA
HEIGHTS TO 8 FEET TO THE NORTH OF 30N TO THE EAST OF THE FRONT
TO 63W.

FOR ADDITIONAL INFORMATION PLEASE VISIT
HTTP://WWW.HURRICANES.GOV/MARINE

$$
MT



000
AXNT20 KNHC 231804
TWDAT

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
205 PM EST WED APR 23 2014

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL
AMERICA...GULF OF MEXICO...CARIBBEAN SEA...NORTHERN SECTIONS OF
SOUTH AMERICA...AND ATLANTIC OCEAN TO THE AFRICAN COAST FROM THE
EQUATOR TO 32N. THE FOLLOWING INFORMATION IS BASED ON SATELLITE
IMAGERY...WEATHER OBSERVATIONS...RADAR...AND METEOROLOGICAL
ANALYSIS.

BASED ON 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
1745 UTC.

...THE ITCZ/THE MONSOON TROUGH...

THE MONSOON TROUGH PASSES THROUGH COASTAL SECTIONS OF GUINEA
NEAR 11N14W TO 7N19W. THE ITCZ IS ALONG 3N23W 2N31W AND 1N40W.
CONVECTIVE PRECIPITATION...SCATTERED TO NUMEROUS STRONG FROM THE
EQUATOR TO 4N BETWEEN 47W AND 52W IN THE ATLANTIC OCEAN AND IN
BRAZIL AND IN FRENCH GUIANA. ISOLATED MODERATE IN THE ATLANTIC
OCEAN FROM THE THE EQUATOR TO 5N BETWEEN 22W AND 47W.

A SURFACE TROUGH IS ALONG 7N7W IN THE IVORY COAST...TO 3N16W AND
3N22W. CONVECTIVE PRECIPITATION...SCATTERED TO NUMEROUS STRONG
FROM 2N TO 4N BETWEEN 9W AND 16W. ISOLATED MODERATE FROM THE
EQUATOR TO 3N BETWEEN 16W AND 23W.

...DISCUSSION...

...THE GULF OF MEXICO...

A MIDDLE LEVEL TO UPPER LEVEL TROUGH PASSES THROUGH 32N78W...
CROSSING NORTHERN FLORIDA...AND CONTINUING INTO THE GULF OF
MEXICO NEAR 25N94W. COMPARATIVELY DRIER AIR IN SUBSIDENCE...
APPARENT IN WATER VAPOR IMAGERY...COVERS THE MAJORITY OF THE
GULF OF MEXICO. HIGH LEVEL MOISTURE REMAINS TO THE SOUTH OF 24N
TO THE WEST OF 90W IN THE SOUTHWESTERN CORNER OF THE AREA. A
DISSIPATING STATIONARY FRONT EXTENDS FROM THE FLORIDA PANHANDLE
INTO SOUTHEASTERN LOUISIANA AND EAST TEXAS...TO TEXAS NEAR
29N101W. A COLD FRONT PASSES THROUGH SOUTHERN GEORGIA...INTO
SOUTHWESTERN ALABAMA AND SOUTHERN MISSISSIPPI. A STATIONARY
FRONT CONTINUES FROM SOUTHERN MISSISSIPPI NORTHWESTWARD...
BEYOND CENTRAL LOUISIANA. NO SIGNIFICANT DEEP CONVECTIVE
PRECIPITATION APPEARS IN SATELLITE IMAGERY.

A 1016 MB ANTICYCLONIC CIRCULATION CENTER IS NEAR 26N91W. BROAD
SURFACE ANTICYCLONIC WIND FLOW SPANS THE GULF OF MEXICO.

FOR THE OFFSHORE OIL PLATFORM SITES THAT ARE TO THE NORTH OF 27N
TO THE WEST OF 87W/88W...

LOW CLOUD CEILINGS ARE BEING REPORTED AT THE FOLLOWING ICAO
STATIONS...KVAF AND KSPR WITH A VISIBILITY OF 1 MILE OR LESS AND
FOG. FAIR SKIES/CLEAR SKIES AT OR LOWER THAN 12000 FEET ARE
BEING REPORTED ELSEWHERE.

FOR THE COASTAL PLAINS OF THE U.S.A. FROM THE DEEP SOUTH OF
TEXAS TO FLORIDA...

LOW LEVEL CLOUD CEILINGS COVER WESLACO...MCALLEN...AND EDINBURG
IN THE DEEP SOUTH OF TEXAS...FROM FALFURRIAS TO THE NAVAL AIR
STATION IN KINGSVILLE...FROM VICTORIA/PORT LAVACA/PALACIOS...AND
AROUND THE HOUSTON METROPOLITAN AREA AND SURROUNDING CITIES...
AND IN THE BEAUMONT-PORT ARTHUR AREA...IN SOUTH CENTRAL COASTAL
LOUISIANA AND AROUND THE SOUTHERN SIDE OF LAKE PONTCHARTRAIN...
AND IN COASTAL SECTIONS OF MISSISSIPPI AND ALABAMA. SCATTERED
LOW CLOUDS COVER THE FLORIDA PANHANDLE. A LOW CLOUD CEILING IS
BEING REPORTED IN TALLAHASSEE AND IN BROOKSVILLE. SCATTERED LOW
CLOUDS ARE BEING OBSERVED IN THE TAMPA METROPOLITAN AREA AND
SURROUNDING CITIES.

...THE CARIBBEAN SEA...

AN UPPER LEVEL RIDGE EXTENDS FROM COASTAL SECTIONS OF
VENEZUELA...INTO THE WEST CENTRAL CARIBBEAN SEA...THROUGH COSTA
RICA AND NICARAGUA...INTO THE EASTERN PACIFIC OCEAN. HIGH LEVEL
MOISTURE IS CURVING FROM CENTRAL AMERICA AND COLOMBIA AND
VENEZUELA...INTO THE CARIBBEAN SEA.

BROKEN TO OVERCAST LOW LEVEL AND MIDDLE LEVEL CLOUDS AND
POSSIBLE RAINSHOWERS ARE PRIMARILY...TO THE SOUTH OF 16N TO THE
WEST OF 66W FROM 16N TO 21N BETWEEN 60W AND 65W...AND POSSIBLE
ELSEWHERE ACROSS THE BASIN...IN SURFACE TRADEWIND FLOW.

THE 24-HOUR RAINFALL TOTAL IN INCHES FOR THE PERIOD ENDING AT
23/1200 UTC...ACCORDING TO THE PAN AMERICAN TEMPERATURE AND
PRECIPITATION TABLES...MIATPTPAN/SXCA01 KNHC...IS 0.28 IN
GUADELOUPE..

...HISPANIOLA...

AN UPPER LEVEL RIDGE EXTENDS FROM COASTAL SECTIONS OF
VENEZUELA...INTO THE WEST CENTRAL CARIBBEAN SEA...THROUGH COSTA
RICA AND NICARAGUA...INTO THE EASTERN PACIFIC OCEAN. HIGH LEVEL
MOISTURE IS CURVING FROM CENTRAL AMERICA AND COLOMBIA AND
VENEZUELA...INTO THE CARIBBEAN SEA.

A SURFACE TROUGH CONTINUES FROM 31N56W 26N60W 21N70W...THROUGH
THE WINDWARD PASSAGE TO 19N80W IN THE NORTHWESTERN CORNER OF THE
CARIBBEAN SEA...TO 17N85W. CONVECTIVE PRECIPITATION...BROKEN TO
OVERCAST LOW LEVEL AND MIDDLE LEVEL CLOUDS AND POSSIBLE
RAINSHOWERS ARE FROM 19N TO 23N BETWEEN 58W AND 85W IN
SOUTHEASTERN CUBA.

CONDITIONS AND CURRENT WEATHER FOR THE DOMINICAN REPUBLIC... FEW
LOW LOW LEVEL CLOUDS ARE IN BARAHONA...SANTO DOMINGO...LA
ROMANA...AND PUNTA CANA. SCATTERED LOW LEVEL AND A MIDDLE LEVEL
CLOUD CEILING ARE IN PUERTO PLATA. SCATTERED LOW LEVEL CLOUDS
ARE IN SANTIAGO.

THE GFS MODEL FORECAST FOR 250 MB SHOWS THAT SOUTHWESTERLY TO
WESTERLY WIND FLOW WILL MOVE ACROSS THE AREA...WITH A RIDGE THAT
RUNS FROM NORTHERN COLOMBIA ACROSS CENTRAL AMERICA. THE GFS
MODEL FOR 500 MB SHOWS THAT SOUTHWESTERLY TO WESTERLY WIND FLOW
WILL CROSS HISPANIOLA DURING THE FIRST 24 HOURS OF THE 48 HOUR
FORECAST PERIOD. HISPANIOLA WILL BE IN THE MIDDLE OF AN EASTERN
CARIBBEAN SEA ANTICYCLONIC CIRCULATION CENTER AND A TROUGH.
NORTHWESTERLY TO WESTERLY WIND FLOW WILL MOVE ACROSS THE AREA
WITH THE TROUGH DURING THE REST OF THE 48 HOUR FORECAST PERIOD.
THE GFS MODEL FORECAST FOR 700 MB SHOWS THAT SOUTHERLY TO
SOUTHWESTERLY WIND FLOW WILL CROSS HISPANIOLA...WITH AN ATLANTIC
OCEAN-TO-CARIBBEAN SEA EAST-TO-WEST RIDGE.

...THE ATLANTIC OCEAN...

A MIDDLE LEVEL TO UPPER LEVEL TROUGH PASSES THROUGH 33N56W TO
30N58W. THE TROUGH SUPPORTS A COLD FRONT THAT PASSES THROUGH
32N56W TO 31N56W. BROAD MIDDLE LEVEL TO UPPER LEVEL ANTICYCLONIC
WIND FLOW COVERS THE AREA THAT IS TO THE NORTH OF 15N TO THE
WEST OF 40W. A SURFACE TROUGH CONTINUES FROM 31N56W 26N60W
21N70W...THROUGH THE WINDWARD PASSAGE TO 19N80W IN THE
NORTHWESTERN CORNER OF THE CARIBBEAN SEA...TO 17N85W.
CONVECTIVE PRECIPITATION...SCATTERED MODERATE TO ISOLATED STRONG
WITHIN 60 NM ON EITHER SIDE OF THE LINE THAT PASSES THROUGH
32N53W...TO 28N55W AND 25N59W.

THE 24-HOUR RAINFALL TOTAL IN INCHES FOR THE PERIOD ENDING AT
23/1200 UTC...ACCORDING TO THE PAN AMERICAN TEMPERATURE AND
PRECIPITATION TABLES...MIATPTPAN/SXCA01 KNHC...IS 0.05 IN
BERMUDA.

REMNANTS OF A MIDDLE LEVEL TO UPPER LEVEL TROUGH ARE ALONG
26N15W 18N27W 14N39W. COMPARATIVELY DRIER AIR IN SUBSIDENCE...
APPARENT IN WATER VAPOR IMAGERY...IS WITHIN 240 NM TO THE
NORTHWEST OF 25N15W 20N23W...WITHIN 400 NM TO 600 NM TO THE
NORTHWEST OF THE LINE 20N23W 10N38W...AND IN THE CARIBBEAN SEA
AND THE ATLANTIC OCEAN FROM 10N TO 20N BETWEEN 40W AND THE MONA
PASSAGE.

A 1026 MB HIGH PRESSURE CENTER IS NEAR 28N35W. SURFACE
ANTICYCLONIC WIND FLOW COVERS THE ATLANTIC OCEAN AND THE
CARIBBEAN SEA TO THE NORTH OF 10N BETWEEN AFRICA AND THE
31N56W 17N85W SURFACE TROUGH.

PLEASE READ THE HIGH SEAS FORECAST...MIAHSFAT2/FZNT02 KNHC...FOR
MORE DETAILS ABOUT...A DISSIPATING FRONTAL TROUGH FROM 31N56W TO
22N65W. EXPECT SOUTH TO SOUTHWEST WINDS 20 TO 25 KNOTS AND SEA
HEIGHTS TO 9 FEET TO THE NORTH OF 27N WITHIN 180 NM TO THE EAST
OF THE SURFACE TROUGH. EXPECT WINDS 20 KNOTS OR LESS AND SEA
HEIGHTS TO 9 FEET TO THE WEST OF THE SURFACE TROUGH TO 59W. A
SECOND AREA OF CONCERN CONSISTS OF WINDS 20 KNOTS OR LESS AND
SEA HEIGHTS 8 TO 10 FEET TO THE NORTH OF 25N BETWEEN 35W AND
46W. A THIRD AREA OF CONCERN CONSISTS WINDS 20 KNOTS OR LESS AND
SEA HEIGHTS TO 8 FEET TO THE SOUTH OF 11N BETWEEN 44W AND 50W. A
FOURTH AREA OF CONCERN CONSISTS OF...A COLD FRONT FROM 31N66W TO
29N74W. EXPECT SOUTHWEST TO WEST WINDS 20 TO 25 KNOTS AND SEA
HEIGHTS TO 8 FEET TO THE NORTH OF 30N TO THE EAST OF THE FRONT
TO 63W.

FOR ADDITIONAL INFORMATION PLEASE VISIT
HTTP://WWW.HURRICANES.GOV/MARINE

$$
MT


000
AXPZ20 KNHC 231533
TWDEP

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC WED APR 23 2014

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND
METEOROLOGICAL ANALYSIS.

BASED ON 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
1500 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

THE MONSOON TROUGH IS ILL-DEFINED. THE ITCZ AXIS EXTENDS FROM
04N95W TO 04N110W TO 06N125W TO 04N140W. SCATTERED MODERATE TO
ISOLATED STRONG CONVECTION IS NOTED FROM 06N TO 10N BETWEEN 116W
AND 120W...FROM 04N TO 10N BETWEEN 120W AND 130W AND FROM 02N TO
04N BETWEEN 132W AND 135W.

...DISCUSSION...

ALOFT...AN UPPER LEVEL TROUGH EXTENDS FROM 31N112W TO 21N124W.
THIS TROUGH SUPPORTS A COLD FRONT THAT EXTENDS FROM 31N114W TO
28N118W. FRESH TO STRONG WINDS FOLLOW THE FRONT WITH SEAS TO 11
FT IN NW SWELL. NO SIGNIFICANT WEATHER IS ASSOCIATED WITH THE
FRONT WHICH IS FORECAST TO DISSIPATE ACROSS THE FAR NE WATERS
LATER TODAY. AN UPPER LEVEL RIDGE IS W OF THE TROUGH WITH AXIS
NEAR 140W AND DOMINATES THE NW PART OF THE FORECAST AREA...
MAINLY N OF 20N W OF 130W. A BROAD UPPER LEVEL RIDGE IS E OF THE
TROUGH ACROSS NORTHERN MEXICO. MODERATE TO STRONG MID TO UPPER
LEVEL SUBSIDENCE AND IMPLIED DRY AIR MASS IS NOTED ON WATER
VAPOR IMAGERY N OF 16N W OF 130W AND ALONG THE TROUGH AXIS. IN
THE DEEP TROPICS...AN UPPER LEVEL ANTICYCLONIC CIRCULATION IS
CENTERED NEAR 9N127W. UPPER DIFFLUENT ASSOCIATED WITH THIS
SYSTEM IS HELPING TO INDUCE THE CONVECTIVE ACTIVITY BETWEEN 116W
AND 128W. A SHORT-WAVE TROUGH IS ACROSS THE ISTHMUS OF
TEHUANTEPEC TO NEAR 12N85W. A RIDGE FROM NORTHERN SOUTH AMERICA
EXTENDS WESTWARD COVERING MOST OF CENTRAL AMERICA.

A 1028 MB HIGH PRES LOCATED NEAR 32N142W EXTENDS A RIDGE SE
ACROSS THE FORECAST WATERS TO NEAR 20N115W. FRESH TO STRONG NE
TO E TRADE WINDS ARE NOTED PER SCATTEROMETER DATA ON THE
SOUTHERN PERIPHERY OF THE RIDGE AND N OF THE ITCZ AXIS...
PARTICULARLY FROM 10N TO 20N W OF 130W AND FROM 11N TO 17N
BETWEEN 124W AND 130W. THE AERIAL EXTENT AND STRENGTH OF THE
TRADES WILL DECREASE ON THU AS HIGH PRES MOVES EASTWARD AND
DISSIPATES. WINDS OF 20-25 KT ARE ALSO NOTED JUST OFF OF
NORTHERN BAJA CALIFORNIA DUE A TIGHT PRES GRADIENT BETWEEN A LOW
CENTER OVER ARIZONA AND THE HIGH PRES. THESE WINDS ARE EXPECTED
TO DIMINISH TO 20 KT OR LESS IN ABOUT 24 HOURS.

LONG PERIOD NW SWELLS...WITH A LEADING EDGE PERIOD OF 17-18
SECONDS WILL MIX WITH SHORTER PERIOD NE SWELL FROM THE TRADE
WIND FLOW AND CROSS EQUATORIAL S SWELL TO GENERATE A LARGE AREA
OF 8 TO 10 FT SEAS AFFECTING MAINLY THE WATERS E OF 130W AND S
OF LINE FROM 13N130W TO 10N110W TO 3.4S90W BY THU MORNING...AND
E OF 125W AND S OF LINE FROM 15N125W TO 17N110W TO 05N92W BY FRI
MORNING. EXPECT ALSO BUILDING SEAS TO 8 FT E OF THE GALAPAGOS
ISLANDS TO ABOUT 2N.  BASED ON WAVE WATCH GUIDANCE...THIS SWELL
EVENT IS FORECAST TO REACH THE MEXICAN COAST E OF 110W THU
NIGHT...AND THE SOUTH PORTION OF THE GULF OF CALIFORNIA OR SEA
OF CORTEZ EARLY ON FRI...BRINGING ROUGH SURF CONDITIONS TO THOSE
COAST.

WINDS ARE EXPECTED TO PULSE TO 15-20 KT ACROSS THE GULF OF
PAPAGAYO DURING THE OVERNIGHT AND EARLY MORNING HOURS WITH THE
ASSISTANCE OF THE NOCTURNAL DRAINAGE FLOW THROUGH THE FORECAST
PERIOD.

$$
GR


000
AXPZ20 KNHC 231533
TWDEP

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC WED APR 23 2014

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND
METEOROLOGICAL ANALYSIS.

BASED ON 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
1500 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

THE MONSOON TROUGH IS ILL-DEFINED. THE ITCZ AXIS EXTENDS FROM
04N95W TO 04N110W TO 06N125W TO 04N140W. SCATTERED MODERATE TO
ISOLATED STRONG CONVECTION IS NOTED FROM 06N TO 10N BETWEEN 116W
AND 120W...FROM 04N TO 10N BETWEEN 120W AND 130W AND FROM 02N TO
04N BETWEEN 132W AND 135W.

...DISCUSSION...

ALOFT...AN UPPER LEVEL TROUGH EXTENDS FROM 31N112W TO 21N124W.
THIS TROUGH SUPPORTS A COLD FRONT THAT EXTENDS FROM 31N114W TO
28N118W. FRESH TO STRONG WINDS FOLLOW THE FRONT WITH SEAS TO 11
FT IN NW SWELL. NO SIGNIFICANT WEATHER IS ASSOCIATED WITH THE
FRONT WHICH IS FORECAST TO DISSIPATE ACROSS THE FAR NE WATERS
LATER TODAY. AN UPPER LEVEL RIDGE IS W OF THE TROUGH WITH AXIS
NEAR 140W AND DOMINATES THE NW PART OF THE FORECAST AREA...
MAINLY N OF 20N W OF 130W. A BROAD UPPER LEVEL RIDGE IS E OF THE
TROUGH ACROSS NORTHERN MEXICO. MODERATE TO STRONG MID TO UPPER
LEVEL SUBSIDENCE AND IMPLIED DRY AIR MASS IS NOTED ON WATER
VAPOR IMAGERY N OF 16N W OF 130W AND ALONG THE TROUGH AXIS. IN
THE DEEP TROPICS...AN UPPER LEVEL ANTICYCLONIC CIRCULATION IS
CENTERED NEAR 9N127W. UPPER DIFFLUENT ASSOCIATED WITH THIS
SYSTEM IS HELPING TO INDUCE THE CONVECTIVE ACTIVITY BETWEEN 116W
AND 128W. A SHORT-WAVE TROUGH IS ACROSS THE ISTHMUS OF
TEHUANTEPEC TO NEAR 12N85W. A RIDGE FROM NORTHERN SOUTH AMERICA
EXTENDS WESTWARD COVERING MOST OF CENTRAL AMERICA.

A 1028 MB HIGH PRES LOCATED NEAR 32N142W EXTENDS A RIDGE SE
ACROSS THE FORECAST WATERS TO NEAR 20N115W. FRESH TO STRONG NE
TO E TRADE WINDS ARE NOTED PER SCATTEROMETER DATA ON THE
SOUTHERN PERIPHERY OF THE RIDGE AND N OF THE ITCZ AXIS...
PARTICULARLY FROM 10N TO 20N W OF 130W AND FROM 11N TO 17N
BETWEEN 124W AND 130W. THE AERIAL EXTENT AND STRENGTH OF THE
TRADES WILL DECREASE ON THU AS HIGH PRES MOVES EASTWARD AND
DISSIPATES. WINDS OF 20-25 KT ARE ALSO NOTED JUST OFF OF
NORTHERN BAJA CALIFORNIA DUE A TIGHT PRES GRADIENT BETWEEN A LOW
CENTER OVER ARIZONA AND THE HIGH PRES. THESE WINDS ARE EXPECTED
TO DIMINISH TO 20 KT OR LESS IN ABOUT 24 HOURS.

LONG PERIOD NW SWELLS...WITH A LEADING EDGE PERIOD OF 17-18
SECONDS WILL MIX WITH SHORTER PERIOD NE SWELL FROM THE TRADE
WIND FLOW AND CROSS EQUATORIAL S SWELL TO GENERATE A LARGE AREA
OF 8 TO 10 FT SEAS AFFECTING MAINLY THE WATERS E OF 130W AND S
OF LINE FROM 13N130W TO 10N110W TO 3.4S90W BY THU MORNING...AND
E OF 125W AND S OF LINE FROM 15N125W TO 17N110W TO 05N92W BY FRI
MORNING. EXPECT ALSO BUILDING SEAS TO 8 FT E OF THE GALAPAGOS
ISLANDS TO ABOUT 2N.  BASED ON WAVE WATCH GUIDANCE...THIS SWELL
EVENT IS FORECAST TO REACH THE MEXICAN COAST E OF 110W THU
NIGHT...AND THE SOUTH PORTION OF THE GULF OF CALIFORNIA OR SEA
OF CORTEZ EARLY ON FRI...BRINGING ROUGH SURF CONDITIONS TO THOSE
COAST.

WINDS ARE EXPECTED TO PULSE TO 15-20 KT ACROSS THE GULF OF
PAPAGAYO DURING THE OVERNIGHT AND EARLY MORNING HOURS WITH THE
ASSISTANCE OF THE NOCTURNAL DRAINAGE FLOW THROUGH THE FORECAST
PERIOD.

$$
GR



000
AXNT20 KNHC 231011
TWDAT

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
805 AM EST WED APR 23 2014

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL
AMERICA...GULF OF MEXICO...CARIBBEAN SEA...NORTHERN SECTIONS OF
SOUTH AMERICA...AND ATLANTIC OCEAN TO THE AFRICAN COAST FROM THE
EQUATOR TO 32N. THE FOLLOWING INFORMATION IS BASED ON SATELLITE
IMAGERY...WEATHER OBSERVATIONS...RADAR...AND METEOROLOGICAL
ANALYSIS.

BASED ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
1115 UTC.

...THE ITCZ/MONSOON TROUGH...

THE MONSOON TROUGH PASSES THROUGH COASTAL BORDER SECTIONS OF
GUINEA-BISSAU AND GUINEA NEAR 11N15W TO 03N24W. THE ITCZ EXTENDS
FROM THAT POINT TO THE COAST OF BRAZIL NEAR 00N50W. A SURFACE
TROUGH IS ALONG 06N11W TO 03N24W. SCATTERED STRONG CONVECTION
WAS NOTED WITHIN 120 NM NORTH OF THE SURFACE TROUGH.

...DISCUSSION...

...THE GULF OF MEXICO...

A 1016 MB SURFACE HIGH IS CENTERED OVER THE WEST CENTRAL GULF OF
MEXICO NEAR 27N93W.  AS THERE IS ALMOST NO PRESSURE GRADIENT
PRESENT...WINDS THROUGHOUT THE GULF ARE GENTLE BREEZE CONDITIONS
OR WEAKER.  NO DEEP CONVECTION NOR ANY WIDESPREAD SHOWERS HAVE
BEEN PRESENT ACROSS THE GULF THIS EVENING.  HOWEVER...SCATTERED
MODERATE CONVECTION THAT BROKE OUT MAINLY OVER THE EAST-FACING
SLOPES OF THE SIERRA MADRE MOUNTAINS OF MEXICO HAS DISSIPATED.
THE WEAK SURFACE HIGH WILL DRIFT EASTWARD DURING THE NEXT TWO
DAYS...THOUGH WINDS OVER THE GULF WILL REMAIN LIGHT.  THE
DIURNALLY FLUCTUATING CONVECTION OVER MEXICO WILL CONTINUE...BUT
THERE IS LITTLE CHANCE OF DEEP CONVECTION OVER THE GULF DURING
THE NEXT COUPLE OF DAYS.

...THE CARIBBEAN SEA...

A SURFACE TROUGH...THE REMNANTS OF A COLD FRONT...EXTEND FROM
HISPANIOLA WEST-SOUTHWESTWARD TO JUST NORTH OF JAMAICA TO THE
NORTHWESTERN CARIBBEAN SEA.  THIS HAS HELPED INITIATE ISOLATED
MODERATE CONVECTION OVER PORTIONS OF CUBA...JAMAICA...AND THE
DOMINICAN REPUBLIC LATE ON TUESDAY...BUT HAS NOW SINCE
DISSIPATED. SCATTERED SHOWERS EXIST WITHIN ABOUT 60 NM OF THE
TROUGH.  THE TROUGH SHOULD CONTINUE TO PROVIDE SOME MOISTURE AND
FORCING FOR ISOLATED DEEP CONVECTION OVER EASTERN CUBA...EASTERN
BAHAMAS...HISPANIOLA DURING THE NEXT TWO DAYS. IN ADDITION...
SCATTERED MODERATE CONVECTION ALSO OCCURRED DURING THE LAST
SEVERAL HOURS OVER NEAR THE COASTS OF COSTA RICA...PANAMA...AND
COLOMBIA...DUE TO LAND BREEZES INTERACTING WITH SUBSTANTIAL
AMOUNTS OF MOISTURE.  DEEP CONVECTION OVER PORTIONS OF CENTRAL
AMERICA AND NORTHERNMOST SOUTH AMERICA DURING AFTERNOONS AND
EARLY EVENING DURING THE NEXT COUPLE OF DAYS SHOULD CONTINUE.
THE WEAK NORTH-SOUTH PRESSURE GRADIENT ACROSS THE CARIBBEAN IS
PRODUCING ONLY GENTLE TO MODERATE BREEZE TRADEWINDS.  OVER THE
NEXT COUPLE DAYS...THE TRADEWINDS WILL REBOUND TO SLIGHTLY
BREEZIER CONDITIONS.

...HISPANIOLA...

A SURFACE TROUGH...THE REMNANTS OF A COLD FRONT...EXTEND FROM
HISPANIOLA WEST-SOUTHWESTWARD TO JUST NORTH OF JAMAICA.  THIS
HAS HELPED INITIATE ISOLATED MODERATE CONVECTION OVER PORTIONS
OF THE DOMINICAN REPUBLIC LATE ON TUESDAY. SCATTERED SHOWERS
ALSO EXIST WITHIN ABOUT 60 NM OF THE TROUGH.  THE TROUGH SHOULD
CONTINUE TO PROVIDE SOME MOISTURE AND FORCING FOR ISOLATED DEEP
CONVECTION OVER HISPANIOLA DURING THE NEXT TWO DAYS.

...THE ATLANTIC OCEAN...

A TROUGH EXTENDS SOUTH-SOUTHWESTWARD FROM AN OCCLUDING GALE-
FORCE LOW OF 993 MB PRESSURE CENTERED AT 40N59W...SEVERAL
HUNDRED MILES NORTHEAST OF BERMUDA.  THE TROUGH ENTERS OUR AREA
AT 32N57W AND EXTENDS TO HISPANIOLA.  SCATTERED SHOWERS AND
ISOLATED MODERATE CONVECTION ARE PRESENT WITHIN 60 NM OF THE
TROUGH.  A LARGE SWATH OF FRESH TO STRONG BREEZE SOUTHERLIES
AHEAD OF THE TROUGH WILL CONTINUE TO ADVECT MOIST AIR POLEWARD
DURING THE NEXT COUPLE OF DAYS AND PROMOTE SHOWERS AND
THUNDERSTORMS.  A NEW COLD FRONT IS EMERGING OFF OF THE U.S.
ATLANTIC COAST CURRENTLY AND WILL QUICKLY PUSH EASTWARD AND
MERGE IN A COUPLE OF DAYS WITH THE TROUGH.  WINDS ON BOTH SIDES
OF THIS NEW FRONT MAY REACH STRONG BREEZE CONDITIONS IN OUR AREA
OF RESPONSIBILITY.

FARTHER EAST...A FRONTAL BOUNDARY IS JUST WITHIN OUR NORTHERN
BOUNDARY.  THE FEATURE IS A STATIONARY FRONT FROM 31N41W TO
28N33W...THEN TRANSITIONS TO A COLD FRONT TO 32N18W.  SCATTERED
SHOWERS EXIST WITHIN 120 NM OF THE FRONT...THOUGH WINDS ARE WEAK
ON BOTH SIDES OF THE FRONT.  THE FRONTAL FEATURE SHOULD
GRADUALLY FADE WITHIN THE NEXT DAY OR TWO.

FOR ADDITIONAL INFORMATION PLEASE VISIT
HTTP://WWW.HURRICANES.GOV/MARINE

$$
LANDSEA



000
AXNT20 KNHC 231011
TWDAT

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
805 AM EST WED APR 23 2014

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL
AMERICA...GULF OF MEXICO...CARIBBEAN SEA...NORTHERN SECTIONS OF
SOUTH AMERICA...AND ATLANTIC OCEAN TO THE AFRICAN COAST FROM THE
EQUATOR TO 32N. THE FOLLOWING INFORMATION IS BASED ON SATELLITE
IMAGERY...WEATHER OBSERVATIONS...RADAR...AND METEOROLOGICAL
ANALYSIS.

BASED ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
1115 UTC.

...THE ITCZ/MONSOON TROUGH...

THE MONSOON TROUGH PASSES THROUGH COASTAL BORDER SECTIONS OF
GUINEA-BISSAU AND GUINEA NEAR 11N15W TO 03N24W. THE ITCZ EXTENDS
FROM THAT POINT TO THE COAST OF BRAZIL NEAR 00N50W. A SURFACE
TROUGH IS ALONG 06N11W TO 03N24W. SCATTERED STRONG CONVECTION
WAS NOTED WITHIN 120 NM NORTH OF THE SURFACE TROUGH.

...DISCUSSION...

...THE GULF OF MEXICO...

A 1016 MB SURFACE HIGH IS CENTERED OVER THE WEST CENTRAL GULF OF
MEXICO NEAR 27N93W.  AS THERE IS ALMOST NO PRESSURE GRADIENT
PRESENT...WINDS THROUGHOUT THE GULF ARE GENTLE BREEZE CONDITIONS
OR WEAKER.  NO DEEP CONVECTION NOR ANY WIDESPREAD SHOWERS HAVE
BEEN PRESENT ACROSS THE GULF THIS EVENING.  HOWEVER...SCATTERED
MODERATE CONVECTION THAT BROKE OUT MAINLY OVER THE EAST-FACING
SLOPES OF THE SIERRA MADRE MOUNTAINS OF MEXICO HAS DISSIPATED.
THE WEAK SURFACE HIGH WILL DRIFT EASTWARD DURING THE NEXT TWO
DAYS...THOUGH WINDS OVER THE GULF WILL REMAIN LIGHT.  THE
DIURNALLY FLUCTUATING CONVECTION OVER MEXICO WILL CONTINUE...BUT
THERE IS LITTLE CHANCE OF DEEP CONVECTION OVER THE GULF DURING
THE NEXT COUPLE OF DAYS.

...THE CARIBBEAN SEA...

A SURFACE TROUGH...THE REMNANTS OF A COLD FRONT...EXTEND FROM
HISPANIOLA WEST-SOUTHWESTWARD TO JUST NORTH OF JAMAICA TO THE
NORTHWESTERN CARIBBEAN SEA.  THIS HAS HELPED INITIATE ISOLATED
MODERATE CONVECTION OVER PORTIONS OF CUBA...JAMAICA...AND THE
DOMINICAN REPUBLIC LATE ON TUESDAY...BUT HAS NOW SINCE
DISSIPATED. SCATTERED SHOWERS EXIST WITHIN ABOUT 60 NM OF THE
TROUGH.  THE TROUGH SHOULD CONTINUE TO PROVIDE SOME MOISTURE AND
FORCING FOR ISOLATED DEEP CONVECTION OVER EASTERN CUBA...EASTERN
BAHAMAS...HISPANIOLA DURING THE NEXT TWO DAYS. IN ADDITION...
SCATTERED MODERATE CONVECTION ALSO OCCURRED DURING THE LAST
SEVERAL HOURS OVER NEAR THE COASTS OF COSTA RICA...PANAMA...AND
COLOMBIA...DUE TO LAND BREEZES INTERACTING WITH SUBSTANTIAL
AMOUNTS OF MOISTURE.  DEEP CONVECTION OVER PORTIONS OF CENTRAL
AMERICA AND NORTHERNMOST SOUTH AMERICA DURING AFTERNOONS AND
EARLY EVENING DURING THE NEXT COUPLE OF DAYS SHOULD CONTINUE.
THE WEAK NORTH-SOUTH PRESSURE GRADIENT ACROSS THE CARIBBEAN IS
PRODUCING ONLY GENTLE TO MODERATE BREEZE TRADEWINDS.  OVER THE
NEXT COUPLE DAYS...THE TRADEWINDS WILL REBOUND TO SLIGHTLY
BREEZIER CONDITIONS.

...HISPANIOLA...

A SURFACE TROUGH...THE REMNANTS OF A COLD FRONT...EXTEND FROM
HISPANIOLA WEST-SOUTHWESTWARD TO JUST NORTH OF JAMAICA.  THIS
HAS HELPED INITIATE ISOLATED MODERATE CONVECTION OVER PORTIONS
OF THE DOMINICAN REPUBLIC LATE ON TUESDAY. SCATTERED SHOWERS
ALSO EXIST WITHIN ABOUT 60 NM OF THE TROUGH.  THE TROUGH SHOULD
CONTINUE TO PROVIDE SOME MOISTURE AND FORCING FOR ISOLATED DEEP
CONVECTION OVER HISPANIOLA DURING THE NEXT TWO DAYS.

...THE ATLANTIC OCEAN...

A TROUGH EXTENDS SOUTH-SOUTHWESTWARD FROM AN OCCLUDING GALE-
FORCE LOW OF 993 MB PRESSURE CENTERED AT 40N59W...SEVERAL
HUNDRED MILES NORTHEAST OF BERMUDA.  THE TROUGH ENTERS OUR AREA
AT 32N57W AND EXTENDS TO HISPANIOLA.  SCATTERED SHOWERS AND
ISOLATED MODERATE CONVECTION ARE PRESENT WITHIN 60 NM OF THE
TROUGH.  A LARGE SWATH OF FRESH TO STRONG BREEZE SOUTHERLIES
AHEAD OF THE TROUGH WILL CONTINUE TO ADVECT MOIST AIR POLEWARD
DURING THE NEXT COUPLE OF DAYS AND PROMOTE SHOWERS AND
THUNDERSTORMS.  A NEW COLD FRONT IS EMERGING OFF OF THE U.S.
ATLANTIC COAST CURRENTLY AND WILL QUICKLY PUSH EASTWARD AND
MERGE IN A COUPLE OF DAYS WITH THE TROUGH.  WINDS ON BOTH SIDES
OF THIS NEW FRONT MAY REACH STRONG BREEZE CONDITIONS IN OUR AREA
OF RESPONSIBILITY.

FARTHER EAST...A FRONTAL BOUNDARY IS JUST WITHIN OUR NORTHERN
BOUNDARY.  THE FEATURE IS A STATIONARY FRONT FROM 31N41W TO
28N33W...THEN TRANSITIONS TO A COLD FRONT TO 32N18W.  SCATTERED
SHOWERS EXIST WITHIN 120 NM OF THE FRONT...THOUGH WINDS ARE WEAK
ON BOTH SIDES OF THE FRONT.  THE FRONTAL FEATURE SHOULD
GRADUALLY FADE WITHIN THE NEXT DAY OR TWO.

FOR ADDITIONAL INFORMATION PLEASE VISIT
HTTP://WWW.HURRICANES.GOV/MARINE

$$
LANDSEA


000
AXPZ20 KNHC 230911
TWDEP

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC WED APR 23 2014

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND
METEOROLOGICAL ANALYSIS.

BASED ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
0900 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

ITCZ FROM 4N96W TO 3N110W TO 6N130W TO 3N135W TO 4N140W.
SCATTERED MODERATE ISOLATED STRONG CONVECTION FROM 2N-5N BETWEEN
100W-105W AND FROM 3N-10N BETWEEN 115W-135W.

...DISCUSSION...

AN UPPER LEVEL RIDGE ACROSS THE FAR NW PORTION OF THE DISCUSSION
AREA N OF 20N W OF 130W. AN UPPER LEVEL TROUGH EXTENDS FROM
NORTHERN BAJA CALIFORNIA SW TO 22N120W. A BROAD UPPER LEVEL
RIDGE IS E OF THE TROUGH ACROSS NORTHERN MEXICO. EXCEPT FOR SOME
HIGH LEVEL MOISTURE WITHIN 200 NM E OF THE TROUGH AXIS STRONG
SUBSIDENCE WITH DRY AND STABLE AIR AT THE MIDDLE AND UPPER
LEVELS IS FROM 15N-30N W OF 105W. IN THE DEEP TROPICS AN UPPER
LEVEL ANTICYCLONIC CIRCULATION IS CENTERED NEAR 9N124W. UPPER
LEVEL DIFFLUENCE WITH THE ANTICYCLONE IS ENHANCING CONVECTION
FROM 3N-10N BETWEEN 115W-135W.

A LARGE SURFACE RIDGE IS N OF 15N W OF 115W. THE PRES GRADIENT
BETWEEN THE RIDGE AND THE ITCZ IS TIGHT ENOUGH FOR 15-20 KT
TRADE WINDS AND SEAS TO 9 FT IN NW SWELL FROM 7N-20N W OF 120W.
LARGE CROSS EQUATORIAL SLY SWELL WILL SPREAD ACROSS A LARGE
PORTION OF THE AREA S OF 15N WITHIN THE NEXT 24 TO 48 HOURS.

$$
DGS


000
AXPZ20 KNHC 230911
TWDEP

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC WED APR 23 2014

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND
METEOROLOGICAL ANALYSIS.

BASED ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
0900 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

ITCZ FROM 4N96W TO 3N110W TO 6N130W TO 3N135W TO 4N140W.
SCATTERED MODERATE ISOLATED STRONG CONVECTION FROM 2N-5N BETWEEN
100W-105W AND FROM 3N-10N BETWEEN 115W-135W.

...DISCUSSION...

AN UPPER LEVEL RIDGE ACROSS THE FAR NW PORTION OF THE DISCUSSION
AREA N OF 20N W OF 130W. AN UPPER LEVEL TROUGH EXTENDS FROM
NORTHERN BAJA CALIFORNIA SW TO 22N120W. A BROAD UPPER LEVEL
RIDGE IS E OF THE TROUGH ACROSS NORTHERN MEXICO. EXCEPT FOR SOME
HIGH LEVEL MOISTURE WITHIN 200 NM E OF THE TROUGH AXIS STRONG
SUBSIDENCE WITH DRY AND STABLE AIR AT THE MIDDLE AND UPPER
LEVELS IS FROM 15N-30N W OF 105W. IN THE DEEP TROPICS AN UPPER
LEVEL ANTICYCLONIC CIRCULATION IS CENTERED NEAR 9N124W. UPPER
LEVEL DIFFLUENCE WITH THE ANTICYCLONE IS ENHANCING CONVECTION
FROM 3N-10N BETWEEN 115W-135W.

A LARGE SURFACE RIDGE IS N OF 15N W OF 115W. THE PRES GRADIENT
BETWEEN THE RIDGE AND THE ITCZ IS TIGHT ENOUGH FOR 15-20 KT
TRADE WINDS AND SEAS TO 9 FT IN NW SWELL FROM 7N-20N W OF 120W.
LARGE CROSS EQUATORIAL SLY SWELL WILL SPREAD ACROSS A LARGE
PORTION OF THE AREA S OF 15N WITHIN THE NEXT 24 TO 48 HOURS.

$$
DGS


000
AXPZ20 KNHC 230911
TWDEP

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC WED APR 23 2014

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND
METEOROLOGICAL ANALYSIS.

BASED ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
0900 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

ITCZ FROM 4N96W TO 3N110W TO 6N130W TO 3N135W TO 4N140W.
SCATTERED MODERATE ISOLATED STRONG CONVECTION FROM 2N-5N BETWEEN
100W-105W AND FROM 3N-10N BETWEEN 115W-135W.

...DISCUSSION...

AN UPPER LEVEL RIDGE ACROSS THE FAR NW PORTION OF THE DISCUSSION
AREA N OF 20N W OF 130W. AN UPPER LEVEL TROUGH EXTENDS FROM
NORTHERN BAJA CALIFORNIA SW TO 22N120W. A BROAD UPPER LEVEL
RIDGE IS E OF THE TROUGH ACROSS NORTHERN MEXICO. EXCEPT FOR SOME
HIGH LEVEL MOISTURE WITHIN 200 NM E OF THE TROUGH AXIS STRONG
SUBSIDENCE WITH DRY AND STABLE AIR AT THE MIDDLE AND UPPER
LEVELS IS FROM 15N-30N W OF 105W. IN THE DEEP TROPICS AN UPPER
LEVEL ANTICYCLONIC CIRCULATION IS CENTERED NEAR 9N124W. UPPER
LEVEL DIFFLUENCE WITH THE ANTICYCLONE IS ENHANCING CONVECTION
FROM 3N-10N BETWEEN 115W-135W.

A LARGE SURFACE RIDGE IS N OF 15N W OF 115W. THE PRES GRADIENT
BETWEEN THE RIDGE AND THE ITCZ IS TIGHT ENOUGH FOR 15-20 KT
TRADE WINDS AND SEAS TO 9 FT IN NW SWELL FROM 7N-20N W OF 120W.
LARGE CROSS EQUATORIAL SLY SWELL WILL SPREAD ACROSS A LARGE
PORTION OF THE AREA S OF 15N WITHIN THE NEXT 24 TO 48 HOURS.

$$
DGS


000
AXPZ20 KNHC 230911
TWDEP

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC WED APR 23 2014

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND
METEOROLOGICAL ANALYSIS.

BASED ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
0900 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

ITCZ FROM 4N96W TO 3N110W TO 6N130W TO 3N135W TO 4N140W.
SCATTERED MODERATE ISOLATED STRONG CONVECTION FROM 2N-5N BETWEEN
100W-105W AND FROM 3N-10N BETWEEN 115W-135W.

...DISCUSSION...

AN UPPER LEVEL RIDGE ACROSS THE FAR NW PORTION OF THE DISCUSSION
AREA N OF 20N W OF 130W. AN UPPER LEVEL TROUGH EXTENDS FROM
NORTHERN BAJA CALIFORNIA SW TO 22N120W. A BROAD UPPER LEVEL
RIDGE IS E OF THE TROUGH ACROSS NORTHERN MEXICO. EXCEPT FOR SOME
HIGH LEVEL MOISTURE WITHIN 200 NM E OF THE TROUGH AXIS STRONG
SUBSIDENCE WITH DRY AND STABLE AIR AT THE MIDDLE AND UPPER
LEVELS IS FROM 15N-30N W OF 105W. IN THE DEEP TROPICS AN UPPER
LEVEL ANTICYCLONIC CIRCULATION IS CENTERED NEAR 9N124W. UPPER
LEVEL DIFFLUENCE WITH THE ANTICYCLONE IS ENHANCING CONVECTION
FROM 3N-10N BETWEEN 115W-135W.

A LARGE SURFACE RIDGE IS N OF 15N W OF 115W. THE PRES GRADIENT
BETWEEN THE RIDGE AND THE ITCZ IS TIGHT ENOUGH FOR 15-20 KT
TRADE WINDS AND SEAS TO 9 FT IN NW SWELL FROM 7N-20N W OF 120W.
LARGE CROSS EQUATORIAL SLY SWELL WILL SPREAD ACROSS A LARGE
PORTION OF THE AREA S OF 15N WITHIN THE NEXT 24 TO 48 HOURS.

$$
DGS


000
AXNT20 KNHC 230509
TWDAT

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
205 AM EST WED APR 23 2014

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL
AMERICA...GULF OF MEXICO...CARIBBEAN SEA...NORTHERN SECTIONS OF
SOUTH AMERICA...AND ATLANTIC OCEAN TO THE AFRICAN COAST FROM THE
EQUATOR TO 32N. THE FOLLOWING INFORMATION IS BASED ON SATELLITE
IMAGERY...WEATHER OBSERVATIONS...RADAR...AND METEOROLOGICAL
ANALYSIS.

BASED ON 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
0515 UTC.

...THE ITCZ/MONSOON TROUGH...

THE MONSOON TROUGH PASSES THROUGH COASTAL BORDER SECTIONS OF
GUINEA-BISSAU NEAR 11N15W TO 03N23W. THE ITCZ EXTENDS FROM THAT
POINT AND CROSSES THE EQUATOR NEAR 28W TO THE COAST OF SOUTH
AMERICA NEAR 02S40W. A SURFACE TROUGH IS ALONG 06N10W TO 03N20W.
SCATTERED STRONG CONVECTION WAS NOTED WITHIN 60 NM NORTH OF
THE SURFACE TROUGH.

...DISCUSSION...

...THE GULF OF MEXICO...

A 1014 MB SURFACE HIGH IS CENTERED OVER THE WEST CENTRAL GULF OF
MEXICO NEAR 26N93W.  AS THERE IS ALMOST NO PRESSURE GRADIENT
PRESENT...WINDS THROUGHOUT THE GULF ARE GENTLE BREEZE CONDITIONS
OR WEAKER.  NO DEEP CONVECTION NOR ANY WIDESPREAD SHOWERS HAVE
BEEN PRESENT ACROSS THE GULF TODAY.  HOWEVER...SCATTERED
MODERATE CONVECTION BROKE OUT MAINLY OVER THE EAST-FACING SLOPES
OF THE SIERRA MADRE MOUNTAINS OF MEXICO.  THIS CONVECTION SHOULD
DISSIPATE...AS IS TYPICAL...LATER THIS MORNING.  THE WEAK
SURFACE HIGH WILL DRIFT EASTWARD DURING THE NEXT TWO
DAYS...THOUGH WINDS OVER THE GULF WILL REMAIN LIGHT.  THE
DIURNALLY FLUCTUATING CONVECTION OVER MEXICO WILL CONTINUE...BUT
THERE IS LITTLE CHANCE OF DEEP CONVECTION OVER THE GULF DURING
THE NEXT COUPLE OF DAYS.

...THE CARIBBEAN SEA...

A SURFACE TROUGH...THE REMNANTS OF A COLD FRONT...EXTEND FROM
HISPANIOLA WEST-SOUTHWESTWARD TO JAMAICA TO THE NORTHWESTERN
CARIBBEAN SEA.  THIS HAS HELPED INITIATE ISOLATED MODERATE
CONVECTION OVER PORTIONS OF CUBA...JAMAICA...AND THE DOMINICAN
REPUBLIC DURING THE LAST SEVERAL HOURS. SCATTERED SHOWERS ALSO
EXIST WITHIN ABOUT 60 NM OF THE TROUGH.  THE TROUGH SHOULD
CONTINUE TO PROVIDE SOME MOISTURE AND FORCING FOR ISOLATED DEEP
CONVECTION OVER EASTERN CUBA...EASTERN BAHAMAS...HISPANIOLA
DURING THE NEXT TWO DAYS. IN ADDITION...SCATTERED MODERATE
CONVECTION ALSO OCCURRED DURING THE LAST SEVERAL HOURS OVER
PORTIONS OF GUATEMALA...COSTA RICA...PANAMA...AND COLOMBIA...DUE
TO DIURNAL HEATING COMBINED WITH SUBSTANTIAL AMOUNTS OF
MOISTURE.  THIS CONVECTION SHOULD DISSIPATE...AS IS
TYPICAL...LATER THIS MORNING...THOUGH MORE OF THE SAME IS LIKELY
DURING THE NEXT COUPLE OF DAYS OVER PORTIONS OF CENTRAL AMERICA
AND NORTHERNMOST SOUTH AMERICA. THE WEAK NORTH-SOUTH PRESSURE
GRADIENT ACROSS THE CARIBBEAN IS PRODUCING ONLY GENTLE TO
MODERATE BREEZE TRADEWINDS.  OVER THE NEXT COUPLE DAYS...THE
TRADEWINDS WILL REBOUND TO SLIGHTLY FASTER CONDITIONS.

...HISPANIOLA...

A SURFACE TROUGH...THE REMNANTS OF A COLD FRONT...EXTEND FROM
HISPANIOLA WEST-SOUTHWESTWARD TO JAMAICA.  THIS HAS HELPED
INITIATE ISOLATED MODERATE CONVECTION OVER PORTIONS OF THE
DOMINICAN REPUBLIC DURING THE LAST SEVERAL HOURS. SCATTERED
SHOWERS ALSO EXIST WITHIN ABOUT 60 NM OF THE TROUGH.  THE TROUGH
SHOULD CONTINUE TO PROVIDE SOME MOISTURE AND FORCING FOR
ISOLATED DEEP CONVECTION OVER HISPANIOLA DURING THE NEXT TWO
DAYS.

...THE ATLANTIC OCEAN...

A DISSIPATING COLD FRONT EXTENDS SOUTH-SOUTHWESTWARD FROM AN
OCCLUDING GALE-FORCE LOW OF 997 MB PRESSURE CENTERED AT
38N61W...A FEW HUNDRED MILES NORTHWEST OF BERMUDA.  THE
DISSIPATING COLD FRONT ENTERS OUR AREA AT 32N59W AND EXTENDS TO
23N65W.  AT THAT POINT...THE FEATURE BECOMES A TROUGH WHICH
EXTENDS TO HISPANIOLA.  SCATTERED SHOWERS AND ISOLATED MODERATE
CONVECTION ARE PRESENT WITHIN 60 NM OF THE FRONT/TROUGH.  A
LARGE SWATH OF FRESH TO STRONG BREEZE SOUTHERLIES AHEAD OF THE
FRONT WILL CONTINUE TO ADVECT MOIST AIR POLEWARD DURING THE NEXT
COUPLE OF DAYS AND PROMOTE SHOWERS AND THUNDERSTORMS...EVEN
AFTER THE FRONT TRANSITIONS TO A TROUGH.  A NEW COLD FRONT WILL
EMERGE OFF OF THE U.S. ATLANTIC COAST LATER THIS MORNING AND
QUICKLY PUSH EASTWARD AND MERGE IN A COUPLE OF DAYS WITH THE
ORIGINAL FRONT.  WINDS ON BOTH SIDES OF THIS NEXT FRONT MAY
REACH STRONG BREEZE CONDITIONS IN OUR AREA OF RESPONSIBILITY.

FARTHER EAST...A FRONTAL BOUNDARY IS JUST WITHIN OUR NORTHERN
BOUNDARY.  THE FEATURE IS A STATIONARY FRONT FROM 32N43W TO
29N33W...THEN TRANSITIONS TO A COLD FRONT TO 32N20W.  SCATTERED
SHOWERS EXIST WITHIN 120 NM OF THE FRONT...THOUGH WINDS ARE WEAK
ON BOTH SIDES OF THE FRONT.  THE FRONTAL FEATURE SHOULD
GRADUALLY FADE WITHIN THE NEXT DAY OR TWO.

FOR ADDITIONAL INFORMATION PLEASE VISIT
HTTP://WWW.HURRICANES.GOV/MARINE

$$
LANDSEA



000
AXNT20 KNHC 230509
TWDAT

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
205 AM EST WED APR 23 2014

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL
AMERICA...GULF OF MEXICO...CARIBBEAN SEA...NORTHERN SECTIONS OF
SOUTH AMERICA...AND ATLANTIC OCEAN TO THE AFRICAN COAST FROM THE
EQUATOR TO 32N. THE FOLLOWING INFORMATION IS BASED ON SATELLITE
IMAGERY...WEATHER OBSERVATIONS...RADAR...AND METEOROLOGICAL
ANALYSIS.

BASED ON 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
0515 UTC.

...THE ITCZ/MONSOON TROUGH...

THE MONSOON TROUGH PASSES THROUGH COASTAL BORDER SECTIONS OF
GUINEA-BISSAU NEAR 11N15W TO 03N23W. THE ITCZ EXTENDS FROM THAT
POINT AND CROSSES THE EQUATOR NEAR 28W TO THE COAST OF SOUTH
AMERICA NEAR 02S40W. A SURFACE TROUGH IS ALONG 06N10W TO 03N20W.
SCATTERED STRONG CONVECTION WAS NOTED WITHIN 60 NM NORTH OF
THE SURFACE TROUGH.

...DISCUSSION...

...THE GULF OF MEXICO...

A 1014 MB SURFACE HIGH IS CENTERED OVER THE WEST CENTRAL GULF OF
MEXICO NEAR 26N93W.  AS THERE IS ALMOST NO PRESSURE GRADIENT
PRESENT...WINDS THROUGHOUT THE GULF ARE GENTLE BREEZE CONDITIONS
OR WEAKER.  NO DEEP CONVECTION NOR ANY WIDESPREAD SHOWERS HAVE
BEEN PRESENT ACROSS THE GULF TODAY.  HOWEVER...SCATTERED
MODERATE CONVECTION BROKE OUT MAINLY OVER THE EAST-FACING SLOPES
OF THE SIERRA MADRE MOUNTAINS OF MEXICO.  THIS CONVECTION SHOULD
DISSIPATE...AS IS TYPICAL...LATER THIS MORNING.  THE WEAK
SURFACE HIGH WILL DRIFT EASTWARD DURING THE NEXT TWO
DAYS...THOUGH WINDS OVER THE GULF WILL REMAIN LIGHT.  THE
DIURNALLY FLUCTUATING CONVECTION OVER MEXICO WILL CONTINUE...BUT
THERE IS LITTLE CHANCE OF DEEP CONVECTION OVER THE GULF DURING
THE NEXT COUPLE OF DAYS.

...THE CARIBBEAN SEA...

A SURFACE TROUGH...THE REMNANTS OF A COLD FRONT...EXTEND FROM
HISPANIOLA WEST-SOUTHWESTWARD TO JAMAICA TO THE NORTHWESTERN
CARIBBEAN SEA.  THIS HAS HELPED INITIATE ISOLATED MODERATE
CONVECTION OVER PORTIONS OF CUBA...JAMAICA...AND THE DOMINICAN
REPUBLIC DURING THE LAST SEVERAL HOURS. SCATTERED SHOWERS ALSO
EXIST WITHIN ABOUT 60 NM OF THE TROUGH.  THE TROUGH SHOULD
CONTINUE TO PROVIDE SOME MOISTURE AND FORCING FOR ISOLATED DEEP
CONVECTION OVER EASTERN CUBA...EASTERN BAHAMAS...HISPANIOLA
DURING THE NEXT TWO DAYS. IN ADDITION...SCATTERED MODERATE
CONVECTION ALSO OCCURRED DURING THE LAST SEVERAL HOURS OVER
PORTIONS OF GUATEMALA...COSTA RICA...PANAMA...AND COLOMBIA...DUE
TO DIURNAL HEATING COMBINED WITH SUBSTANTIAL AMOUNTS OF
MOISTURE.  THIS CONVECTION SHOULD DISSIPATE...AS IS
TYPICAL...LATER THIS MORNING...THOUGH MORE OF THE SAME IS LIKELY
DURING THE NEXT COUPLE OF DAYS OVER PORTIONS OF CENTRAL AMERICA
AND NORTHERNMOST SOUTH AMERICA. THE WEAK NORTH-SOUTH PRESSURE
GRADIENT ACROSS THE CARIBBEAN IS PRODUCING ONLY GENTLE TO
MODERATE BREEZE TRADEWINDS.  OVER THE NEXT COUPLE DAYS...THE
TRADEWINDS WILL REBOUND TO SLIGHTLY FASTER CONDITIONS.

...HISPANIOLA...

A SURFACE TROUGH...THE REMNANTS OF A COLD FRONT...EXTEND FROM
HISPANIOLA WEST-SOUTHWESTWARD TO JAMAICA.  THIS HAS HELPED
INITIATE ISOLATED MODERATE CONVECTION OVER PORTIONS OF THE
DOMINICAN REPUBLIC DURING THE LAST SEVERAL HOURS. SCATTERED
SHOWERS ALSO EXIST WITHIN ABOUT 60 NM OF THE TROUGH.  THE TROUGH
SHOULD CONTINUE TO PROVIDE SOME MOISTURE AND FORCING FOR
ISOLATED DEEP CONVECTION OVER HISPANIOLA DURING THE NEXT TWO
DAYS.

...THE ATLANTIC OCEAN...

A DISSIPATING COLD FRONT EXTENDS SOUTH-SOUTHWESTWARD FROM AN
OCCLUDING GALE-FORCE LOW OF 997 MB PRESSURE CENTERED AT
38N61W...A FEW HUNDRED MILES NORTHWEST OF BERMUDA.  THE
DISSIPATING COLD FRONT ENTERS OUR AREA AT 32N59W AND EXTENDS TO
23N65W.  AT THAT POINT...THE FEATURE BECOMES A TROUGH WHICH
EXTENDS TO HISPANIOLA.  SCATTERED SHOWERS AND ISOLATED MODERATE
CONVECTION ARE PRESENT WITHIN 60 NM OF THE FRONT/TROUGH.  A
LARGE SWATH OF FRESH TO STRONG BREEZE SOUTHERLIES AHEAD OF THE
FRONT WILL CONTINUE TO ADVECT MOIST AIR POLEWARD DURING THE NEXT
COUPLE OF DAYS AND PROMOTE SHOWERS AND THUNDERSTORMS...EVEN
AFTER THE FRONT TRANSITIONS TO A TROUGH.  A NEW COLD FRONT WILL
EMERGE OFF OF THE U.S. ATLANTIC COAST LATER THIS MORNING AND
QUICKLY PUSH EASTWARD AND MERGE IN A COUPLE OF DAYS WITH THE
ORIGINAL FRONT.  WINDS ON BOTH SIDES OF THIS NEXT FRONT MAY
REACH STRONG BREEZE CONDITIONS IN OUR AREA OF RESPONSIBILITY.

FARTHER EAST...A FRONTAL BOUNDARY IS JUST WITHIN OUR NORTHERN
BOUNDARY.  THE FEATURE IS A STATIONARY FRONT FROM 32N43W TO
29N33W...THEN TRANSITIONS TO A COLD FRONT TO 32N20W.  SCATTERED
SHOWERS EXIST WITHIN 120 NM OF THE FRONT...THOUGH WINDS ARE WEAK
ON BOTH SIDES OF THE FRONT.  THE FRONTAL FEATURE SHOULD
GRADUALLY FADE WITHIN THE NEXT DAY OR TWO.

FOR ADDITIONAL INFORMATION PLEASE VISIT
HTTP://WWW.HURRICANES.GOV/MARINE

$$
LANDSEA


000
AXPZ20 KNHC 230244
TWDEP

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC WED APR 23 2014

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND
METEOROLOGICAL ANALYSIS.

BASED ON 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
0245 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

ITCZ AXIS EXTENDS FROM 04N105W TO 06N124W TO 04N140W. SCATTERED
MODERATE CONVECTION IS FROM 04N TO 08N BETWEEN 88W AND
94W...FROM 06N TO 12N BETWEEN 109W AND 125W...AND FROM 01N TO
10N BETWEEN 125W AND 140W.

...DISCUSSION...

ALOFT...AN UPPER LEVEL TROUGH IS N OF 20N W OF 116W. THIS TROUGH
SUPPORTS A SURFACE TROUGH THAT EXTENDS FROM BAJA CALIFORNIA AT
30N115W TO 24N124W. FRESH TO STRONG WINDS FOLLOW THE TROUGH WITH
SEAS TO 9 FT. NO SIGNIFICANT WEATHER IS ASSOCIATED WITH THE
TROUGH. AN UPPER LEVEL RIDGE DOMINATES THE SOUTHERN BAJA
CALIFORNIA PENINSULA AND NW MEXICO. MODERATE TO STRONG MID TO
UPPER LEVEL SUBSIDENCE IS N OF 16N BETWEEN 102W AND 116W. IN THE
DEEP TROPICS...AN UPPER LEVEL HIGH IS CENTERED NEAR 07N128W.
UPPER DIFFLUENT ON THE WEST SIDE OF THIS ANTICYCLONE IS HELPING
TO INDUCE CONVECTION ALONG THE ITCZ W OF 109W. ANOTHER SMALL
UPPER LEVEL HIGH IS NEAR 07N98W. FURTHER E...AN UPPER LEVEL
RIDGE IS E OF 90W TO NORTHERN SOUTH AMERICA AND MOST OF CENTRAL
AMERICA.

ON THE SURFACE...A 1028 MB HIGH PRES LOCATED NEAR 33N142W
EXTENDS A RIDGE SE ACROSS THE FORECAST WATERS TO NEAR 20N115W.
TRADEWINDS OF 15-20 KT ARE NOTED PER SCATTEROMETER DATA ON THE
SOUTHERN PERIPHERY OF THE RIDGE AND N OF THE ITCZ AXIS WITH SEAS
TO 8 FT. THE HIGH PRES WILL MOVE EASTWARD TO A POSITION NEAR
31N137W IN 24 HOURS. THE TRADEWIND FLOW IS EXPECTED TO INCREASE
SOME AS THE SURFACE PRESSURE GRADIENT TIGHTENS BETWEEN THE HIGH
AND LOWER PRES ALONG THE ITCZ AXIS. IN ADDITION...EXPECT
INCREASING NW TO N WINDS WITH BUILDING SEAS TO AROUND 10 FT OFF
OF NORTHERN BAJA CALIFORNIA...MAINLY N OF 25N E OF 125W BY WED
EVENING.

LONG PERIOD NW SWELLS...WITH A LEADING EDGE PERIOD OF 17-18
SECONDS...ARE SPREADING SE ACROSS THE N WATERS RAISING SEAS UP
TO 9 FT N OF 20N W OF 112W. THIS SWELL EVENT WILL MIX WITH
SHORTER PERIOD NE SWELL FROM THE TRADEWIND FLOW TO COVER MOST OF
THE WATERS W OF 110W. CROSS EQUATORIAL SW SWELL DOMINATES THE
REMAINDER OF THE FORECAST WATERS MAINLY E OF 120W. LARGE SWELLS
FROM THE SOUTHERN HEMISPHERE...WITH WAVE PERIOD OF 20-22
SECONDS...WILL CROSS THE EQUATOR ON WED AND WILL PROPAGATE
ACROSS THE SOUTH WATERS ON THU RAISING SEAS UP TO 10 FT E OF
130W AND S OF A LINE FROM 12N130W TO 12N110W TO 3.4S89W. BASED
ON WAVE WATCH GUIDANCE...THIS SWELL EVENT IS FORECAST TO REACH
THE MEXICAN COAST E OF 110W THU NIGHT...AND THE SOUTH PORTION OF
THE GULF OF CALIFORNIA OR SEA OF CORTEZ ON FRI.

$$
FORMOSA



000
AXPZ20 KNHC 230244
TWDEP

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC WED APR 23 2014

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND
METEOROLOGICAL ANALYSIS.

BASED ON 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
0245 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

ITCZ AXIS EXTENDS FROM 04N105W TO 06N124W TO 04N140W. SCATTERED
MODERATE CONVECTION IS FROM 04N TO 08N BETWEEN 88W AND
94W...FROM 06N TO 12N BETWEEN 109W AND 125W...AND FROM 01N TO
10N BETWEEN 125W AND 140W.

...DISCUSSION...

ALOFT...AN UPPER LEVEL TROUGH IS N OF 20N W OF 116W. THIS TROUGH
SUPPORTS A SURFACE TROUGH THAT EXTENDS FROM BAJA CALIFORNIA AT
30N115W TO 24N124W. FRESH TO STRONG WINDS FOLLOW THE TROUGH WITH
SEAS TO 9 FT. NO SIGNIFICANT WEATHER IS ASSOCIATED WITH THE
TROUGH. AN UPPER LEVEL RIDGE DOMINATES THE SOUTHERN BAJA
CALIFORNIA PENINSULA AND NW MEXICO. MODERATE TO STRONG MID TO
UPPER LEVEL SUBSIDENCE IS N OF 16N BETWEEN 102W AND 116W. IN THE
DEEP TROPICS...AN UPPER LEVEL HIGH IS CENTERED NEAR 07N128W.
UPPER DIFFLUENT ON THE WEST SIDE OF THIS ANTICYCLONE IS HELPING
TO INDUCE CONVECTION ALONG THE ITCZ W OF 109W. ANOTHER SMALL
UPPER LEVEL HIGH IS NEAR 07N98W. FURTHER E...AN UPPER LEVEL
RIDGE IS E OF 90W TO NORTHERN SOUTH AMERICA AND MOST OF CENTRAL
AMERICA.

ON THE SURFACE...A 1028 MB HIGH PRES LOCATED NEAR 33N142W
EXTENDS A RIDGE SE ACROSS THE FORECAST WATERS TO NEAR 20N115W.
TRADEWINDS OF 15-20 KT ARE NOTED PER SCATTEROMETER DATA ON THE
SOUTHERN PERIPHERY OF THE RIDGE AND N OF THE ITCZ AXIS WITH SEAS
TO 8 FT. THE HIGH PRES WILL MOVE EASTWARD TO A POSITION NEAR
31N137W IN 24 HOURS. THE TRADEWIND FLOW IS EXPECTED TO INCREASE
SOME AS THE SURFACE PRESSURE GRADIENT TIGHTENS BETWEEN THE HIGH
AND LOWER PRES ALONG THE ITCZ AXIS. IN ADDITION...EXPECT
INCREASING NW TO N WINDS WITH BUILDING SEAS TO AROUND 10 FT OFF
OF NORTHERN BAJA CALIFORNIA...MAINLY N OF 25N E OF 125W BY WED
EVENING.

LONG PERIOD NW SWELLS...WITH A LEADING EDGE PERIOD OF 17-18
SECONDS...ARE SPREADING SE ACROSS THE N WATERS RAISING SEAS UP
TO 9 FT N OF 20N W OF 112W. THIS SWELL EVENT WILL MIX WITH
SHORTER PERIOD NE SWELL FROM THE TRADEWIND FLOW TO COVER MOST OF
THE WATERS W OF 110W. CROSS EQUATORIAL SW SWELL DOMINATES THE
REMAINDER OF THE FORECAST WATERS MAINLY E OF 120W. LARGE SWELLS
FROM THE SOUTHERN HEMISPHERE...WITH WAVE PERIOD OF 20-22
SECONDS...WILL CROSS THE EQUATOR ON WED AND WILL PROPAGATE
ACROSS THE SOUTH WATERS ON THU RAISING SEAS UP TO 10 FT E OF
130W AND S OF A LINE FROM 12N130W TO 12N110W TO 3.4S89W. BASED
ON WAVE WATCH GUIDANCE...THIS SWELL EVENT IS FORECAST TO REACH
THE MEXICAN COAST E OF 110W THU NIGHT...AND THE SOUTH PORTION OF
THE GULF OF CALIFORNIA OR SEA OF CORTEZ ON FRI.

$$
FORMOSA


000
AXNT20 KNHC 230005
TWDAT

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
805 PM EST TUE APR 22 2014

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL
AMERICA...GULF OF MEXICO...CARIBBEAN SEA...NORTHERN SECTIONS OF
SOUTH AMERICA...AND ATLANTIC OCEAN TO THE AFRICAN COAST FROM THE
EQUATOR TO 32N. THE FOLLOWING INFORMATION IS BASED ON SATELLITE
IMAGERY...WEATHER OBSERVATIONS...RADAR...AND METEOROLOGICAL
ANALYSIS.

BASED ON 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
2345 UTC.

...THE ITCZ/MONSOON TROUGH...

THE MONSOON TROUGH PASSES THROUGH COASTAL BORDER SECTIONS OF
GUINEA-BISSAU AND SENEGAL FROM 12N16W TO 4N24W. THE ITCZ EXTENDS
FROM 2N27W AND CROSSES THE EQUATOR NEAR 39W TO THE COAST OF
SOUTH AMERICA NEAR 2S44W. SCATTERED STRONG CONVECTION WAS NOTED
WITHIN 120 NM OF 5N15W.

A SURFACE TROUGH IS ALONG 3N7W TO THE EQUATOR AT 17W.

...DISCUSSION...

...THE GULF OF MEXICO...

A MID TO UPPER LEVEL TROUGH EXTENDS FROM A CYCLONIC CIRCULATION
OVER SE ALABAMA THROUGH 29N90W TO A BASE NEAR 22N97W. THERE WERE
SEVERAL WEAK CYCLONIC CIRCULATIONS WITHIN THE TROUGH OVER THE
WEST-CENTRAL GULF. STRONG SUBSIDENCE WAS SWEEPING ALONG THE
BACKSIDE OF THE TROUGH OVER THE NW GULF OF MEXICO. MID TO UPPER
LEVEL MOISTURE WAS SWEEPING OVER THE GULF E OF THE TROUGH IN
FAIRLY STRONG WSW FLOW ALOFT. AT THE SURFACE...A PAIR OF WEAK
1017 MB HIGH PRESSURE AREAS WERE NOTED NEAR 28N92W AND IN THE
VICINITY OF TAMPICO MEXICO. A COLD FRONT WAS JUST INLAND ALONG
THE UPPER TEXAS AND LOUISIANA COAST WITH A PRE-FRONTAL TROUGH
ALONG THE IMMEDIATE COAST OF LOUISIANA. SKIES WERE GENERALLY
FAIR OVER THE GULF WITH PATCHES OF LOW AND MID CLOUDS. THE WEAK
PRESSURE PATTERN MANIFESTED IN LIGHT WINDS OVER THE ENTIRE GULF
WITH BUOYS REPORTING SEAS OF 1 TO 2 FEET THROUGHOUT.

...THE CARIBBEAN SEA...

AN UPPER LEVEL RIDGE EXTENDS FROM NORTHWESTERN VENEZUELA...
ACROSS NORTHERN COLOMBIA...THE SOUTHWESTERN CORNER OF THE
CARIBBEAN SEA TO THE COAST OF NICARAGUA NEAR 13N84W. S TO SW
FLOW ALOFT WAS NOTED S OF THE RIDGE AXIS WITH STRONG WNW FLOW
NOTED N OF THE AXIS ACROSS CUBA...HISPANIOLA AND PUERTO RICO.
UPPER LEVEL MOISTURE WAS CURVING TO THE NORTH AND EAST ACROSS
THE BASIN S OF 15N.

THE BROKEN TO OVERCAST HIGH CLOUDS NOTED ABOVE MASKED PATCHES OF
BROKEN LOW AND MIDDLE LEVEL CLOUDS AND POSSIBLE LOW TOPPED
SHOWERS MOVING WESTWARD IN TRADE WIND FLOW ACROSS THE BASIN.
ISOLATED THUNDERSTORMS WERE ERUPTING OVER JAMAICA....EXTREME SE
CUBA AND NORTH-CENTRAL PORTIONS OF THE DOMINICAN REPUBLIC WHERE
OROGRAPHIC LIFT CONTRIBUTED TO THE ACTIVITY.

SCATTEROMETER DATA INDICATED SUB-NORMAL TRADE WINDS ACROSS THE
BASIN WITH A LARGE AREA OF 5 TO 10 KT WINDS NOTED OVER THE BASIN
WEST OF 75W. THE LIGHT WINDS SHIFTED FROM THE EAST TO LIGHT
NORTHWESTERLY IN THE VICINITY OF A SURFACE TROUGH WHICH EXTENDED
FROM THE EXTREME SE COAST OF CUBA THROUGH 18N84W TO THE GULF OF
HONDURAS. R TO SE WINDS OF 10-15 KT PREVAILED OVER THE CARIBBEAN
E OF 75W.

...HISPANIOLA...

STRONG WEST-NORTHWEST FLOW ALOFT SWEPT ACROSS CUBA AND
HISPANIOLA TO PUERTO RICO AMIDST STRONG DEEP LAYERED SUBSIDENCE
IN THE AREA. THE PROXIMITY OF A WEAK COLD FRONT AND SURFACE
TROUGH ACROSS EXTREME NORTHERN PORTIONS OF THE ISLAND TRIGGERED
ANOTHER ROUND OF AFTERNOON THUNDERSTORMS NEAR PUERTO PLATA AND
LORNA DE CABRERA. BROKEN TO OVERCAST LOW AND MID CLOUDS COVERED
THE REMAINDER OF HAITI AND THE DOMINICAN REPUBLIC EXTENDING OVER
THE SOUTHEAST BAHAMAS. THE PRESENCE OF THE TROUGH/FRONTAL
REMNANT IN THE AREA OVER THE NEXT DAY OR SO WILL CONTINUE TO
ALLOW FOR ENHANCED THUNDERSTORM ACTIVITY ACROSS THE ISLAND.

...THE ATLANTIC OCEAN...

A MID TO UPPER LEVEL CYCLONIC CIRCULATION NEAR 37N60W WAS
ACCELERATING OUT TO THE NE WITH AN ATTENDANT TROUGH EXTENDING
SOUTHWARD THROUGH 31N60W TO A BASE NEAR 23N67W. STRONG
SUBSIDENCE WAS NOTED WITHIN 11120-180 NM EITHER SIDE OF THE
TROUGH. THE TROUGH WAS PROVIDING WANING SUPPORT FOR A COLD FRONT
THAT PASSED THROUGH 32N61W TO 25N65W TO THE EXTREME NORTH COAST
OF THE DOMINICAN REPUBLIC. A SURFACE TROUGH CONTINUES FROM THE
FRONT...ACROSS NORTHERN HAITI...THROUGH THE WATERS THAT ARE
BETWEEN HAITI...CUBA...AND JAMAICA TO THE NW CARIBBEAN SEA. A
POST-FRONTAL TROUGH IS ALONG 31N65W 24N70W TO 23N72W. SCATTERED
MODERATE TO ISOLATED STRONG CONVECTION WAS NOTED WITHIN 90-120
NM E OF THE COLD FRONT N OF 26N. MID TO UPPER LEVEL MOISTURE WAS
STREAMING TO THE EAST OF THE TROUGH AND FRONT COVERED THE
ATLANTIC N OF 22N BETWEEN 35W AND 62W.

A MIDDLE LEVEL TO UPPER LEVEL SHEARED TROUGH IS ALONG 27N18W
THROUGH 22N30W TO A BASE NEAR 13N47W. COMPARATIVELY DRIER AIR IN
SUBSIDENCE...APPARENT IN WATER VAPOR IMAGERY...IS WITHIN 300 NM
TO 600 NM TO THE NORTHWEST OF THE LINE FROM 24N20W TO 10N45W.

A 1024 MB HIGH PRESSURE CENTER IS NEAR 34N31W. A COLD FRONT
ENTERED THE AREA NEAR 32N22W...BECAME STATIONARY NEAR 29N35W AND
EXITED THE AREA NEAR 32N43W. SURFACE ANTICYCLONIC WINDS COVERED
THE REMAINDER OF THE ATLANTIC OCEAN AND THE CARIBBEAN SEA TO THE
NORTH OF 10N BETWEEN AFRICA AND 60W.

FOR ADDITIONAL INFORMATION PLEASE VISIT
HTTP://WWW.HURRICANES.GOV/MARINE

$$
COBB


000
AXNT20 KNHC 230005
TWDAT

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
805 PM EST TUE APR 22 2014

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL
AMERICA...GULF OF MEXICO...CARIBBEAN SEA...NORTHERN SECTIONS OF
SOUTH AMERICA...AND ATLANTIC OCEAN TO THE AFRICAN COAST FROM THE
EQUATOR TO 32N. THE FOLLOWING INFORMATION IS BASED ON SATELLITE
IMAGERY...WEATHER OBSERVATIONS...RADAR...AND METEOROLOGICAL
ANALYSIS.

BASED ON 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
2345 UTC.

...THE ITCZ/MONSOON TROUGH...

THE MONSOON TROUGH PASSES THROUGH COASTAL BORDER SECTIONS OF
GUINEA-BISSAU AND SENEGAL FROM 12N16W TO 4N24W. THE ITCZ EXTENDS
FROM 2N27W AND CROSSES THE EQUATOR NEAR 39W TO THE COAST OF
SOUTH AMERICA NEAR 2S44W. SCATTERED STRONG CONVECTION WAS NOTED
WITHIN 120 NM OF 5N15W.

A SURFACE TROUGH IS ALONG 3N7W TO THE EQUATOR AT 17W.

...DISCUSSION...

...THE GULF OF MEXICO...

A MID TO UPPER LEVEL TROUGH EXTENDS FROM A CYCLONIC CIRCULATION
OVER SE ALABAMA THROUGH 29N90W TO A BASE NEAR 22N97W. THERE WERE
SEVERAL WEAK CYCLONIC CIRCULATIONS WITHIN THE TROUGH OVER THE
WEST-CENTRAL GULF. STRONG SUBSIDENCE WAS SWEEPING ALONG THE
BACKSIDE OF THE TROUGH OVER THE NW GULF OF MEXICO. MID TO UPPER
LEVEL MOISTURE WAS SWEEPING OVER THE GULF E OF THE TROUGH IN
FAIRLY STRONG WSW FLOW ALOFT. AT THE SURFACE...A PAIR OF WEAK
1017 MB HIGH PRESSURE AREAS WERE NOTED NEAR 28N92W AND IN THE
VICINITY OF TAMPICO MEXICO. A COLD FRONT WAS JUST INLAND ALONG
THE UPPER TEXAS AND LOUISIANA COAST WITH A PRE-FRONTAL TROUGH
ALONG THE IMMEDIATE COAST OF LOUISIANA. SKIES WERE GENERALLY
FAIR OVER THE GULF WITH PATCHES OF LOW AND MID CLOUDS. THE WEAK
PRESSURE PATTERN MANIFESTED IN LIGHT WINDS OVER THE ENTIRE GULF
WITH BUOYS REPORTING SEAS OF 1 TO 2 FEET THROUGHOUT.

...THE CARIBBEAN SEA...

AN UPPER LEVEL RIDGE EXTENDS FROM NORTHWESTERN VENEZUELA...
ACROSS NORTHERN COLOMBIA...THE SOUTHWESTERN CORNER OF THE
CARIBBEAN SEA TO THE COAST OF NICARAGUA NEAR 13N84W. S TO SW
FLOW ALOFT WAS NOTED S OF THE RIDGE AXIS WITH STRONG WNW FLOW
NOTED N OF THE AXIS ACROSS CUBA...HISPANIOLA AND PUERTO RICO.
UPPER LEVEL MOISTURE WAS CURVING TO THE NORTH AND EAST ACROSS
THE BASIN S OF 15N.

THE BROKEN TO OVERCAST HIGH CLOUDS NOTED ABOVE MASKED PATCHES OF
BROKEN LOW AND MIDDLE LEVEL CLOUDS AND POSSIBLE LOW TOPPED
SHOWERS MOVING WESTWARD IN TRADE WIND FLOW ACROSS THE BASIN.
ISOLATED THUNDERSTORMS WERE ERUPTING OVER JAMAICA....EXTREME SE
CUBA AND NORTH-CENTRAL PORTIONS OF THE DOMINICAN REPUBLIC WHERE
OROGRAPHIC LIFT CONTRIBUTED TO THE ACTIVITY.

SCATTEROMETER DATA INDICATED SUB-NORMAL TRADE WINDS ACROSS THE
BASIN WITH A LARGE AREA OF 5 TO 10 KT WINDS NOTED OVER THE BASIN
WEST OF 75W. THE LIGHT WINDS SHIFTED FROM THE EAST TO LIGHT
NORTHWESTERLY IN THE VICINITY OF A SURFACE TROUGH WHICH EXTENDED
FROM THE EXTREME SE COAST OF CUBA THROUGH 18N84W TO THE GULF OF
HONDURAS. R TO SE WINDS OF 10-15 KT PREVAILED OVER THE CARIBBEAN
E OF 75W.

...HISPANIOLA...

STRONG WEST-NORTHWEST FLOW ALOFT SWEPT ACROSS CUBA AND
HISPANIOLA TO PUERTO RICO AMIDST STRONG DEEP LAYERED SUBSIDENCE
IN THE AREA. THE PROXIMITY OF A WEAK COLD FRONT AND SURFACE
TROUGH ACROSS EXTREME NORTHERN PORTIONS OF THE ISLAND TRIGGERED
ANOTHER ROUND OF AFTERNOON THUNDERSTORMS NEAR PUERTO PLATA AND
LORNA DE CABRERA. BROKEN TO OVERCAST LOW AND MID CLOUDS COVERED
THE REMAINDER OF HAITI AND THE DOMINICAN REPUBLIC EXTENDING OVER
THE SOUTHEAST BAHAMAS. THE PRESENCE OF THE TROUGH/FRONTAL
REMNANT IN THE AREA OVER THE NEXT DAY OR SO WILL CONTINUE TO
ALLOW FOR ENHANCED THUNDERSTORM ACTIVITY ACROSS THE ISLAND.

...THE ATLANTIC OCEAN...

A MID TO UPPER LEVEL CYCLONIC CIRCULATION NEAR 37N60W WAS
ACCELERATING OUT TO THE NE WITH AN ATTENDANT TROUGH EXTENDING
SOUTHWARD THROUGH 31N60W TO A BASE NEAR 23N67W. STRONG
SUBSIDENCE WAS NOTED WITHIN 11120-180 NM EITHER SIDE OF THE
TROUGH. THE TROUGH WAS PROVIDING WANING SUPPORT FOR A COLD FRONT
THAT PASSED THROUGH 32N61W TO 25N65W TO THE EXTREME NORTH COAST
OF THE DOMINICAN REPUBLIC. A SURFACE TROUGH CONTINUES FROM THE
FRONT...ACROSS NORTHERN HAITI...THROUGH THE WATERS THAT ARE
BETWEEN HAITI...CUBA...AND JAMAICA TO THE NW CARIBBEAN SEA. A
POST-FRONTAL TROUGH IS ALONG 31N65W 24N70W TO 23N72W. SCATTERED
MODERATE TO ISOLATED STRONG CONVECTION WAS NOTED WITHIN 90-120
NM E OF THE COLD FRONT N OF 26N. MID TO UPPER LEVEL MOISTURE WAS
STREAMING TO THE EAST OF THE TROUGH AND FRONT COVERED THE
ATLANTIC N OF 22N BETWEEN 35W AND 62W.

A MIDDLE LEVEL TO UPPER LEVEL SHEARED TROUGH IS ALONG 27N18W
THROUGH 22N30W TO A BASE NEAR 13N47W. COMPARATIVELY DRIER AIR IN
SUBSIDENCE...APPARENT IN WATER VAPOR IMAGERY...IS WITHIN 300 NM
TO 600 NM TO THE NORTHWEST OF THE LINE FROM 24N20W TO 10N45W.

A 1024 MB HIGH PRESSURE CENTER IS NEAR 34N31W. A COLD FRONT
ENTERED THE AREA NEAR 32N22W...BECAME STATIONARY NEAR 29N35W AND
EXITED THE AREA NEAR 32N43W. SURFACE ANTICYCLONIC WINDS COVERED
THE REMAINDER OF THE ATLANTIC OCEAN AND THE CARIBBEAN SEA TO THE
NORTH OF 10N BETWEEN AFRICA AND 60W.

FOR ADDITIONAL INFORMATION PLEASE VISIT
HTTP://WWW.HURRICANES.GOV/MARINE

$$
COBB



000
AXPZ20 KNHC 222123
TWDEP

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC TUE APR 22 2014

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND
METEOROLOGICAL ANALYSIS.

BASED ON 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
2100 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

ITCZ AXIS FROM 06N110W TO 09N120W TO 05N140W. SCATTERED MODERATE
TO ISOLATED STRONG FROM 04N TO 08N BETWEEN 88W AND 92W... AND
FROM 01N TO 09N BETWEEN 128W AND 140W. SCATTERED MODERATE FROM
07N TO 12N BETWEEN 105W AND 126W.

...DISCUSSION...

ALOFT...AN UPPER LEVEL TROUGH IS N OF 20N W OF 120W. THIS TROUGH
SUPPORTS A DISSIPATING COLD FRONT THAT EXTENDS FROM 30N119W TO
26N130W. FRESH TO STRONG WINDS FOLLOW THE FRONT WITH SEAS TO 9
FT. NO SIGNIFICANT WEATHER IS ASSOCIATED WITH THE FRONT WHICH IS
FORECAST TO DISSIPATE ACROSS THE N WATERS LATER THIS EVENING. AN
UPPER LEVEL RIDGE DOMINATES THE BAJA CALIFORNIA PENINSULA AND NW
MEXICO. MODERATE TO STRONG MID TO UPPER LEVEL SUBSIDENCE IS N OF
16N BETWEEN 100W AND 120W. IN THE DEEP TROPICS...AN UPPER LEVEL
HIGH IS CENTERED NEAR 07N128W. UPPER DIFFLUENT ON THE WEST SIDE
OF THIS ANTICYCLONE IS HELPING TO INDUCE CONVECTION ALONG THE
ITCZ W OF 128W. ANOTHER SMALL UPPER LEVEL HIGH IS NEAR 07N98W.
FURTHER E...AN UPPER LEVEL RIDGE IS E OF 90W TO NORTHERN SOUTH
AMERICA AND MOST OF CENTRAL AMERICA.

ON THE SURFACE...A 1029 MB HIGH PRES LOCATED NEAR 33N145W
EXTENDS A RIDGE SE ACROSS THE FORECAST WATERS TO NEAR 20N115W.
TRADEWINDS OF 15-20 KT ARE NOTED PER SCATTEROMETER DATA ON THE
SOUTHERN PERIPHERY OF THE RIDGE AND N OF THE ITCZ AXIS WITH SEAS
TO 8 FT. THE HIGH PRES WILL MOVE EASTWARD TO A POSITION NEAR
32N137W IN 24 HOURS. THE TRADEWIND FLOW IS EXPECTED TO INCREASE
SOME AS THE SURFACE PRESSURE GRADIENT TIGHTENS BETWEEN THE HIGH
AND LOWER PRES ALONG THE ITCZ AXIS. IN ADDITION...EXPECT
INCREASING NW TO N WINDS WITH BUILDING SEAS TO AROUND 11 FT OFF
OF NORTHERN BAJA  CALIFORNIA...MAINLY N OF 25N E OF 125W BY WED
MORNING.

LONG PERIOD NW SWELLS...WITH A LEADING EDGE PERIOD OF 17-18
SECONDS...ARE SPREADING SE ACROSS THE N WATERS RAISING SEAS UP
TO 9 FT N OF 20N W OF 112W. THIS SWELL EVENT WILL MIX WITH
SHORTER PERIOD NE SWELL FROM THE TRADEWIND FLOW TO COVER MOST OF
THE WATERS W OF 110W. CROSS EQUATORIAL SW SWELL DOMINATES THE
REMAINDER OF THE FORECAST WATERS MAINLY E OF 120W. LARGE SWELLS
FROM THE SOUTHERN HEMISPHERE...WITH WAVE PERIOD OF 20-22
SECONDS...WILL CROSS THE EQUATOR ON WED AND WILL PROPAGATE
ACROSS THE SOUTH WATERS ON THU RAISING SEAS UP TO 10 FT E OF
130W AND S OF A LINE FROM 12N130W TO 10N110W TO 3.4S90W. BASED
ON WAVE WATCH GUIDANCE...THIS SWELL EVENT IS FORECAST TO REACH
THE MEXICAN COAST E OF 110W THU NIGHT...AND THE SOUTH PORTION OF
THE GULF OF CALIFORNIA OR SEA OF CORTEZ ON FRI.

$$
FORMOSA


000
AXPZ20 KNHC 222123
TWDEP

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC TUE APR 22 2014

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND
METEOROLOGICAL ANALYSIS.

BASED ON 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
2100 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

ITCZ AXIS FROM 06N110W TO 09N120W TO 05N140W. SCATTERED MODERATE
TO ISOLATED STRONG FROM 04N TO 08N BETWEEN 88W AND 92W... AND
FROM 01N TO 09N BETWEEN 128W AND 140W. SCATTERED MODERATE FROM
07N TO 12N BETWEEN 105W AND 126W.

...DISCUSSION...

ALOFT...AN UPPER LEVEL TROUGH IS N OF 20N W OF 120W. THIS TROUGH
SUPPORTS A DISSIPATING COLD FRONT THAT EXTENDS FROM 30N119W TO
26N130W. FRESH TO STRONG WINDS FOLLOW THE FRONT WITH SEAS TO 9
FT. NO SIGNIFICANT WEATHER IS ASSOCIATED WITH THE FRONT WHICH IS
FORECAST TO DISSIPATE ACROSS THE N WATERS LATER THIS EVENING. AN
UPPER LEVEL RIDGE DOMINATES THE BAJA CALIFORNIA PENINSULA AND NW
MEXICO. MODERATE TO STRONG MID TO UPPER LEVEL SUBSIDENCE IS N OF
16N BETWEEN 100W AND 120W. IN THE DEEP TROPICS...AN UPPER LEVEL
HIGH IS CENTERED NEAR 07N128W. UPPER DIFFLUENT ON THE WEST SIDE
OF THIS ANTICYCLONE IS HELPING TO INDUCE CONVECTION ALONG THE
ITCZ W OF 128W. ANOTHER SMALL UPPER LEVEL HIGH IS NEAR 07N98W.
FURTHER E...AN UPPER LEVEL RIDGE IS E OF 90W TO NORTHERN SOUTH
AMERICA AND MOST OF CENTRAL AMERICA.

ON THE SURFACE...A 1029 MB HIGH PRES LOCATED NEAR 33N145W
EXTENDS A RIDGE SE ACROSS THE FORECAST WATERS TO NEAR 20N115W.
TRADEWINDS OF 15-20 KT ARE NOTED PER SCATTEROMETER DATA ON THE
SOUTHERN PERIPHERY OF THE RIDGE AND N OF THE ITCZ AXIS WITH SEAS
TO 8 FT. THE HIGH PRES WILL MOVE EASTWARD TO A POSITION NEAR
32N137W IN 24 HOURS. THE TRADEWIND FLOW IS EXPECTED TO INCREASE
SOME AS THE SURFACE PRESSURE GRADIENT TIGHTENS BETWEEN THE HIGH
AND LOWER PRES ALONG THE ITCZ AXIS. IN ADDITION...EXPECT
INCREASING NW TO N WINDS WITH BUILDING SEAS TO AROUND 11 FT OFF
OF NORTHERN BAJA  CALIFORNIA...MAINLY N OF 25N E OF 125W BY WED
MORNING.

LONG PERIOD NW SWELLS...WITH A LEADING EDGE PERIOD OF 17-18
SECONDS...ARE SPREADING SE ACROSS THE N WATERS RAISING SEAS UP
TO 9 FT N OF 20N W OF 112W. THIS SWELL EVENT WILL MIX WITH
SHORTER PERIOD NE SWELL FROM THE TRADEWIND FLOW TO COVER MOST OF
THE WATERS W OF 110W. CROSS EQUATORIAL SW SWELL DOMINATES THE
REMAINDER OF THE FORECAST WATERS MAINLY E OF 120W. LARGE SWELLS
FROM THE SOUTHERN HEMISPHERE...WITH WAVE PERIOD OF 20-22
SECONDS...WILL CROSS THE EQUATOR ON WED AND WILL PROPAGATE
ACROSS THE SOUTH WATERS ON THU RAISING SEAS UP TO 10 FT E OF
130W AND S OF A LINE FROM 12N130W TO 10N110W TO 3.4S90W. BASED
ON WAVE WATCH GUIDANCE...THIS SWELL EVENT IS FORECAST TO REACH
THE MEXICAN COAST E OF 110W THU NIGHT...AND THE SOUTH PORTION OF
THE GULF OF CALIFORNIA OR SEA OF CORTEZ ON FRI.

$$
FORMOSA


000
AXPZ20 KNHC 222123
TWDEP

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC TUE APR 22 2014

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND
METEOROLOGICAL ANALYSIS.

BASED ON 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
2100 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

ITCZ AXIS FROM 06N110W TO 09N120W TO 05N140W. SCATTERED MODERATE
TO ISOLATED STRONG FROM 04N TO 08N BETWEEN 88W AND 92W... AND
FROM 01N TO 09N BETWEEN 128W AND 140W. SCATTERED MODERATE FROM
07N TO 12N BETWEEN 105W AND 126W.

...DISCUSSION...

ALOFT...AN UPPER LEVEL TROUGH IS N OF 20N W OF 120W. THIS TROUGH
SUPPORTS A DISSIPATING COLD FRONT THAT EXTENDS FROM 30N119W TO
26N130W. FRESH TO STRONG WINDS FOLLOW THE FRONT WITH SEAS TO 9
FT. NO SIGNIFICANT WEATHER IS ASSOCIATED WITH THE FRONT WHICH IS
FORECAST TO DISSIPATE ACROSS THE N WATERS LATER THIS EVENING. AN
UPPER LEVEL RIDGE DOMINATES THE BAJA CALIFORNIA PENINSULA AND NW
MEXICO. MODERATE TO STRONG MID TO UPPER LEVEL SUBSIDENCE IS N OF
16N BETWEEN 100W AND 120W. IN THE DEEP TROPICS...AN UPPER LEVEL
HIGH IS CENTERED NEAR 07N128W. UPPER DIFFLUENT ON THE WEST SIDE
OF THIS ANTICYCLONE IS HELPING TO INDUCE CONVECTION ALONG THE
ITCZ W OF 128W. ANOTHER SMALL UPPER LEVEL HIGH IS NEAR 07N98W.
FURTHER E...AN UPPER LEVEL RIDGE IS E OF 90W TO NORTHERN SOUTH
AMERICA AND MOST OF CENTRAL AMERICA.

ON THE SURFACE...A 1029 MB HIGH PRES LOCATED NEAR 33N145W
EXTENDS A RIDGE SE ACROSS THE FORECAST WATERS TO NEAR 20N115W.
TRADEWINDS OF 15-20 KT ARE NOTED PER SCATTEROMETER DATA ON THE
SOUTHERN PERIPHERY OF THE RIDGE AND N OF THE ITCZ AXIS WITH SEAS
TO 8 FT. THE HIGH PRES WILL MOVE EASTWARD TO A POSITION NEAR
32N137W IN 24 HOURS. THE TRADEWIND FLOW IS EXPECTED TO INCREASE
SOME AS THE SURFACE PRESSURE GRADIENT TIGHTENS BETWEEN THE HIGH
AND LOWER PRES ALONG THE ITCZ AXIS. IN ADDITION...EXPECT
INCREASING NW TO N WINDS WITH BUILDING SEAS TO AROUND 11 FT OFF
OF NORTHERN BAJA  CALIFORNIA...MAINLY N OF 25N E OF 125W BY WED
MORNING.

LONG PERIOD NW SWELLS...WITH A LEADING EDGE PERIOD OF 17-18
SECONDS...ARE SPREADING SE ACROSS THE N WATERS RAISING SEAS UP
TO 9 FT N OF 20N W OF 112W. THIS SWELL EVENT WILL MIX WITH
SHORTER PERIOD NE SWELL FROM THE TRADEWIND FLOW TO COVER MOST OF
THE WATERS W OF 110W. CROSS EQUATORIAL SW SWELL DOMINATES THE
REMAINDER OF THE FORECAST WATERS MAINLY E OF 120W. LARGE SWELLS
FROM THE SOUTHERN HEMISPHERE...WITH WAVE PERIOD OF 20-22
SECONDS...WILL CROSS THE EQUATOR ON WED AND WILL PROPAGATE
ACROSS THE SOUTH WATERS ON THU RAISING SEAS UP TO 10 FT E OF
130W AND S OF A LINE FROM 12N130W TO 10N110W TO 3.4S90W. BASED
ON WAVE WATCH GUIDANCE...THIS SWELL EVENT IS FORECAST TO REACH
THE MEXICAN COAST E OF 110W THU NIGHT...AND THE SOUTH PORTION OF
THE GULF OF CALIFORNIA OR SEA OF CORTEZ ON FRI.

$$
FORMOSA


000
AXPZ20 KNHC 222123
TWDEP

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC TUE APR 22 2014

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND
METEOROLOGICAL ANALYSIS.

BASED ON 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
2100 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

ITCZ AXIS FROM 06N110W TO 09N120W TO 05N140W. SCATTERED MODERATE
TO ISOLATED STRONG FROM 04N TO 08N BETWEEN 88W AND 92W... AND
FROM 01N TO 09N BETWEEN 128W AND 140W. SCATTERED MODERATE FROM
07N TO 12N BETWEEN 105W AND 126W.

...DISCUSSION...

ALOFT...AN UPPER LEVEL TROUGH IS N OF 20N W OF 120W. THIS TROUGH
SUPPORTS A DISSIPATING COLD FRONT THAT EXTENDS FROM 30N119W TO
26N130W. FRESH TO STRONG WINDS FOLLOW THE FRONT WITH SEAS TO 9
FT. NO SIGNIFICANT WEATHER IS ASSOCIATED WITH THE FRONT WHICH IS
FORECAST TO DISSIPATE ACROSS THE N WATERS LATER THIS EVENING. AN
UPPER LEVEL RIDGE DOMINATES THE BAJA CALIFORNIA PENINSULA AND NW
MEXICO. MODERATE TO STRONG MID TO UPPER LEVEL SUBSIDENCE IS N OF
16N BETWEEN 100W AND 120W. IN THE DEEP TROPICS...AN UPPER LEVEL
HIGH IS CENTERED NEAR 07N128W. UPPER DIFFLUENT ON THE WEST SIDE
OF THIS ANTICYCLONE IS HELPING TO INDUCE CONVECTION ALONG THE
ITCZ W OF 128W. ANOTHER SMALL UPPER LEVEL HIGH IS NEAR 07N98W.
FURTHER E...AN UPPER LEVEL RIDGE IS E OF 90W TO NORTHERN SOUTH
AMERICA AND MOST OF CENTRAL AMERICA.

ON THE SURFACE...A 1029 MB HIGH PRES LOCATED NEAR 33N145W
EXTENDS A RIDGE SE ACROSS THE FORECAST WATERS TO NEAR 20N115W.
TRADEWINDS OF 15-20 KT ARE NOTED PER SCATTEROMETER DATA ON THE
SOUTHERN PERIPHERY OF THE RIDGE AND N OF THE ITCZ AXIS WITH SEAS
TO 8 FT. THE HIGH PRES WILL MOVE EASTWARD TO A POSITION NEAR
32N137W IN 24 HOURS. THE TRADEWIND FLOW IS EXPECTED TO INCREASE
SOME AS THE SURFACE PRESSURE GRADIENT TIGHTENS BETWEEN THE HIGH
AND LOWER PRES ALONG THE ITCZ AXIS. IN ADDITION...EXPECT
INCREASING NW TO N WINDS WITH BUILDING SEAS TO AROUND 11 FT OFF
OF NORTHERN BAJA  CALIFORNIA...MAINLY N OF 25N E OF 125W BY WED
MORNING.

LONG PERIOD NW SWELLS...WITH A LEADING EDGE PERIOD OF 17-18
SECONDS...ARE SPREADING SE ACROSS THE N WATERS RAISING SEAS UP
TO 9 FT N OF 20N W OF 112W. THIS SWELL EVENT WILL MIX WITH
SHORTER PERIOD NE SWELL FROM THE TRADEWIND FLOW TO COVER MOST OF
THE WATERS W OF 110W. CROSS EQUATORIAL SW SWELL DOMINATES THE
REMAINDER OF THE FORECAST WATERS MAINLY E OF 120W. LARGE SWELLS
FROM THE SOUTHERN HEMISPHERE...WITH WAVE PERIOD OF 20-22
SECONDS...WILL CROSS THE EQUATOR ON WED AND WILL PROPAGATE
ACROSS THE SOUTH WATERS ON THU RAISING SEAS UP TO 10 FT E OF
130W AND S OF A LINE FROM 12N130W TO 10N110W TO 3.4S90W. BASED
ON WAVE WATCH GUIDANCE...THIS SWELL EVENT IS FORECAST TO REACH
THE MEXICAN COAST E OF 110W THU NIGHT...AND THE SOUTH PORTION OF
THE GULF OF CALIFORNIA OR SEA OF CORTEZ ON FRI.

$$
FORMOSA


000
AXNT20 KNHC 221743
TWDAT

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
205 PM EST TUE APR 22 2014

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL
AMERICA...GULF OF MEXICO...CARIBBEAN SEA...NORTHERN SECTIONS OF
SOUTH AMERICA...AND ATLANTIC OCEAN TO THE AFRICAN COAST FROM THE
EQUATOR TO 32N. THE FOLLOWING INFORMATION IS BASED ON SATELLITE
IMAGERY...WEATHER OBSERVATIONS...RADAR...AND METEOROLOGICAL
ANALYSIS.

BASED ON 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
1745 UTC.

...THE ITCZ/THE MONSOON TROUGH...

THE MONSOON TROUGH PASSES THROUGH COASTAL BORDER SECTIONS OF
GUINEA-BISSAU AND SENEGAL FROM 12N TO 13N BETWEEN 16W AND
17W...TO 12N18W 9N20W AND 7N23W. THE ITCZ IS ALONG 1N22W 2N27W
AND 2N33W. CONVECTIVE PRECIPITATION...WIDELY SCATTERED MODERATE
TO ISOLATED STRONG ELSEWHERE FROM THE EQUATOR TO 6N BETWEEN 13W
AND 51W.

A SURFACE TROUGH IS ALONG 7N5W IN THE IVORY COAST...TO 4N13W AND
3N22W. CONVECTIVE PRECIPITATION...NUMEROUS STRONG FROM 3N TO 5N
BETWEEN 13W AND 15W...AND FROM 3N TO 4N BETWEEN 18W AND 23W.

...DISCUSSION...

...THE GULF OF MEXICO...

A MIDDLE LEVEL TO UPPER LEVEL TROUGH IS MOVING THROUGH
MISSISSIPPI...LOUISIANA...AND THE DEEP SOUTH OF TEXAS. THE
TROUGH SUPPORTS A STILL-INLAND TEXAS COLD FRONT. MIDDLE LEVEL TO
UPPER LEVEL MOISTURE COVERS THE GULF OF MEXICO TO THE WEST OF
90W. EARLIER CONVECTIVE PRECIPITATION THAT WAS COVERING THE
AREAS FROM MEXICO AND TEXAS AND LOUISIANA FROM 20N TO 32N
BETWEEN 92W AND 100W HAS DISSIPATED.

ONE 1017 MB ANTICYCLONIC CIRCULATION CENTER IS NEAR 28N89W. A
1016 MB ANTICYCLONIC CIRCULATION CENTER IS NEAR 26N96W. BROAD
SURFACE ANTICYCLONIC WIND FLOW SPANS THE GULF OF MEXICO.

FOR THE OFFSHORE OIL PLATFORM SITES THAT ARE TO THE NORTH OF 27N
TO THE WEST OF 87W/88W...

LOW CLOUD CEILINGS ARE BEING REPORTED AT THE FOLLOWING ICAO
STATIONS...KHQI...KCRH...KVBS...AND KATP. FAIR SKIES/CLEAR SKIES
AT OR LOWER THAN 12000 FEET ARE BEING REPORTED ELSEWHERE.

FOR THE COASTAL PLAINS OF THE U.S.A. FROM THE DEEP SOUTH OF
TEXAS TO FLORIDA...

LOW LEVEL CLOUD CEILINGS COVER THE DEEP SOUTH OF TEXAS... AND
ELSEWHERE IN TEXAS FROM VICTORIA AND PALACIOS NORTHWARD. LOW
LEVEL CLOUD CEILINGS COVER SOUTHERN LOUISIANA...INCLUDING IN THE
AREAS THAT ARE AROUND LAKE PONTCHARTRAIN. MOSTLY SCATTERED AND
SOME BROKEN MULTILAYERED CLOUDS COVER THE COASTAL AREAS OF
MISSISSIPPI AND ALABAMA. FEW TO SCATTERED MULTILAYERED CLOUDS
COVER FLORIDA TO THE WEST OF PERRY. LOW CLOUD CEILINGS COVER
FLORIDA FROM BROOKSVILLE TO THE TAMPA METROPOLITAN AREA...IN THE
AREAS OF FORT MYERS AND NAPLES...AND IN MARATHON IN THE FLORIDA
KEYS.

...THE CARIBBEAN SEA...

AN UPPER LEVEL RIDGE EXTENDS FROM NORTHWESTERN VENEZUELA...
ACROSS NORTHERN COLOMBIA...ACROSS THE SOUTHWESTERN CORNER OF THE
CARIBBEAN SEA...ACROSS CENTRAL AMERICA THROUGH PANAMA...COSTA
RICA...TO WESTERN HONDURAS. HIGH LEVEL MOISTURE IS CURVING FROM
NORTHERN SECTIONS OF COLOMBIA AND VENEZUELA...AND CENTRAL
AMERICA...INTO THE CARIBBEAN SEA...TO THE SOUTH OF 18N TO THE
EAST OF 86W.

BROKEN TO OVERCAST LOW LEVEL AND MIDDLE LEVEL CLOUDS AND
POSSIBLE RAINSHOWERS ARE...FROM 16N TO 21N BETWEEN 60W AND
65W...ACROSS INTERIOR SECTIONS OF HISPANIOLA AND SOUTHEASTERN
CUBA FROM 18N TO 22N BETWEEN 68W AND 78W...FROM 16N TO 20N
BETWEEN 78W AND 86W...AND IN THE ATLANTIC OCEAN FROM 8N TO 12N
BETWEEN 58W AND 62W MOVING TOWARD VENEZUELA AND TRINIDAD...IN
SURFACE TRADEWIND FLOW.

THE 24-HOUR RAINFALL TOTAL IN INCHES FOR THE PERIOD ENDING AT
22/1200 UTC...ACCORDING TO THE PAN AMERICAN TEMPERATURE AND
PRECIPITATION TABLES...MIATPTPAN/SXCA01 KNHC...IS 0.08 IN
GUADELOUPE...0.07 IN ST. THOMAS...AND 0.01 IN SAN JUAN IN PUERTO
RICO.

PLEASE READ THE HIGH SEAS FORECAST...MIAHSFAT2/FZNT02 KNHC...
AND THE OFFSHORE FORECAST...MIAOFFNT3/FZNT23 KNHC...FOR MORE
DETAILS ABOUT...NORTHEAST TO EAST WINDS 20 TO 25 KNOTS AND SEA
HEIGHTS TO 8 FEET FROM 11N TO 13N BETWEEN 74W AND 76W.

...HISPANIOLA...

AN UPPER LEVEL RIDGE EXTENDS FROM NORTHWESTERN VENEZUELA...
ACROSS NORTHERN COLOMBIA...ACROSS THE SOUTHWESTERN CORNER OF THE
CARIBBEAN SEA...ACROSS CENTRAL AMERICA THROUGH PANAMA...COSTA
RICA...TO WESTERN HONDURAS.

A MIDDLE LEVEL TO UPPER LEVEL TROUGH EXTENDS FROM AN ATLANTIC
OCEAN 35N63W CYCLONIC CIRCULATION CENTER TO 25N65W...TO THE
NORTHERN COAST OF HISPANIOLA NEAR THE BORDER OF HAITI AND THE
DOMINICAN REPUBLIC. THE TROUGH SUPPORTS A COLD FRONT THAT PASSES
THROUGH THE ATLANTIC OCEAN NEAR 20N70W TO 20N72W. A SURFACE
TROUGH CONTINUES FROM 20N72W...ACROSS NORTHERN HAITI...THROUGH
THE WATERS THAT ARE BETWEEN HAITI...CUBA...AND JAMAICA TO 19N80W
AND 18N85W IN THE NORTHWESTERN CORNER OF THE CARIBBEAN SEA.

BROKEN TO OVERCAST LOW LEVEL AND MIDDLE LEVEL CLOUDS AND
POSSIBLE RAINSHOWERS ARE ACROSS INTERIOR SECTIONS OF HISPANIOLA
AND SOUTHEASTERN CUBA FROM 18N TO 22N BETWEEN 68W AND
78W...AND FROM 16N TO 20N BETWEEN 78W AND 86W.

CONDITIONS AND CURRENT WEATHER FOR THE DOMINICAN REPUBLIC...
SCATTERED LOW LEVEL CLOUDS AND A MIDDLE LEVEL CLOUD CEILING ARE
IN BARAHONA. SCATTERED LOW LEVEL AND SCATTERED MIDDLE LEVEL
CLOUDS ARE IN SANTO DOMINGO. SCATTERED LOW CLOUDS ARE IN LA
ROMANA. FEW LOW CLOUDS ARE IN PUNTA CANA. SCATTERED LOW CLOUDS
AND SCATTERED MIDDLE LEVEL CLOUDS ARE IN SANTIAGO. SCATTERED LOW
CLOUDS AND A MIDDLE LEVEL CLOUD CEILING COVER PUERTO PLATA. FEW
LOW CLOUDS AND SCATTERED HIGH LEVEL CLOUDS ARE IN PORT-AU-PRINCE
HAITI.

THE GFS MODEL FORECAST FOR 250 MB SHOWS WESTERLY WIND
FLOW...WITH A RIDGE THAT RUNS FROM NORTHERN COLOMBIA ACROSS
CENTRAL AMERICA. THE GFS MODEL FOR 500 MB SHOWS WESTERLY WIND
FLOW...WITH INDIVIDUAL ANTICYCLONIC CIRCULATION CENTERS THAT ARE
FORECAST TO BE PRESENT IN THE CARIBBEAN SEA DURING THE NEXT 48
HOURS. THE GFS MODEL FORECAST FOR 700 MB SHOWS THAT ANTICYCLONIC
WIND FLOW WILL BE ON TOP OF THE AREA...WITH ANTICYCLONIC
CIRCULATION CENTERS AND RIDGES ACROSS THE AREA FOR THE NEXT 48
HOURS.

...THE ATLANTIC OCEAN...

A MIDDLE LEVEL TO UPPER LEVEL CYCLONIC CIRCULATION CENTER IS
NEAR 35N63W. A TROUGH EXTENDS FROM THE CYCLONIC CENTER TO 25N65W
TO THE NORTHERN COAST OF HISPANIOLA NEAR THE BORDER OF HAITI AND
THE DOMINICAN REPUBLIC. THE TROUGH SUPPORTS A COLD FRONT THAT
PASSES THROUGH 32N63W TO 25N66W TO 20N70W AND 20N72W. A SURFACE
TROUGH CONTINUES FROM 20N72W...ACROSS NORTHERN HAITI...THROUGH
THE WATERS THAT ARE BETWEEN HAITI...CUBA...AND JAMAICA TO 19N80W
AND 18N85W IN THE NORTHWESTERN CORNER OF THE CARIBBEAN SEA. A
POST-FRONTAL SURFACE TROUGH IS ALONG 31N68W 27N69W 23N71W.
CONVECTIVE PRECIPITATION...SCATTERED MODERATE TO ISOLATED STRONG
WITHIN 60 NM ON EITHER SIDE OF THE LINE THAT PASSES THROUGH
32N60W 27N62W 24N64W 21N67W. HIGH LEVEL MOISTURE THAT IS TO THE
EAST OF THE TROUGH AND FRONT COVERS THE ATLANTIC OCEAN TO THE
NORTH OF 21N BETWEEN 35W AND THE COLD FRONT.

THE 24-HOUR RAINFALL TOTAL IN INCHES FOR THE PERIOD ENDING AT
22/1200 UTC...ACCORDING TO THE PAN AMERICAN TEMPERATURE AND
PRECIPITATION TABLES...MIATPTPAN/SXCA01 KNHC...IS 0.10 IN
BERMUDA...AND 0.03 IN NASSAU IN THE BAHAMAS.

A MIDDLE LEVEL TO UPPER LEVEL TROUGH IS ALONG 27N18W 20N30W
12N47W. COMPARATIVELY DRIER AIR IN SUBSIDENCE...APPARENT IN
WATER VAPOR IMAGERY...IS WITHIN 300 NM TO 500 NM TO THE
NORTHWEST OF THE LINE 24N21W 14N40W...AND THEN WITHIN 600 NM TO
750 NM TO THE NORTHWEST OF 14N40W 8N57W.

A 1023 MB HIGH PRESSURE CENTER IS NEAR 27N39W. SURFACE
ANTICYCLONIC WIND FLOW COVERS THE ATLANTIC OCEAN AND THE
CARIBBEAN SEA TO THE NORTH OF 10N BETWEEN AFRICA AND 60W.

PLEASE READ THE HIGH SEAS FORECAST...MIAHSFAT2/FZNT02 KNHC...FOR
MORE DETAILS ABOUT...A COLD FRONT FROM 31N63W TO 19N72W. EXPECT
SOUTH TO SOUTHWEST WINDS 20 TO 25 KNOTS AND SEA HEIGHTS 8 FEET
TO THE NORTH OF 25N WITHIN 180 NM TO THE EAST OF THE FRONT.
EXPECT WINDS 20 KNOTS OR LESS AND SEA HEIGHTS TO 8 FEET TO THE
SOUTH OF 14N BETWEEN 40W AND 61W. EXPECT ALSO...FOR THE 06 HOUR
FORECAST WINDS 20 KNOTS OR LESS AND SEA HEIGHTS 8 TO 10 FEET TO
THE NORTH OF 30N BETWEEN 35W AND 44W.

FOR ADDITIONAL INFORMATION PLEASE VISIT
HTTP://WWW.HURRICANES.GOV/MARINE

$$
MT


000
AXNT20 KNHC 221743
TWDAT

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
205 PM EST TUE APR 22 2014

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL
AMERICA...GULF OF MEXICO...CARIBBEAN SEA...NORTHERN SECTIONS OF
SOUTH AMERICA...AND ATLANTIC OCEAN TO THE AFRICAN COAST FROM THE
EQUATOR TO 32N. THE FOLLOWING INFORMATION IS BASED ON SATELLITE
IMAGERY...WEATHER OBSERVATIONS...RADAR...AND METEOROLOGICAL
ANALYSIS.

BASED ON 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
1745 UTC.

...THE ITCZ/THE MONSOON TROUGH...

THE MONSOON TROUGH PASSES THROUGH COASTAL BORDER SECTIONS OF
GUINEA-BISSAU AND SENEGAL FROM 12N TO 13N BETWEEN 16W AND
17W...TO 12N18W 9N20W AND 7N23W. THE ITCZ IS ALONG 1N22W 2N27W
AND 2N33W. CONVECTIVE PRECIPITATION...WIDELY SCATTERED MODERATE
TO ISOLATED STRONG ELSEWHERE FROM THE EQUATOR TO 6N BETWEEN 13W
AND 51W.

A SURFACE TROUGH IS ALONG 7N5W IN THE IVORY COAST...TO 4N13W AND
3N22W. CONVECTIVE PRECIPITATION...NUMEROUS STRONG FROM 3N TO 5N
BETWEEN 13W AND 15W...AND FROM 3N TO 4N BETWEEN 18W AND 23W.

...DISCUSSION...

...THE GULF OF MEXICO...

A MIDDLE LEVEL TO UPPER LEVEL TROUGH IS MOVING THROUGH
MISSISSIPPI...LOUISIANA...AND THE DEEP SOUTH OF TEXAS. THE
TROUGH SUPPORTS A STILL-INLAND TEXAS COLD FRONT. MIDDLE LEVEL TO
UPPER LEVEL MOISTURE COVERS THE GULF OF MEXICO TO THE WEST OF
90W. EARLIER CONVECTIVE PRECIPITATION THAT WAS COVERING THE
AREAS FROM MEXICO AND TEXAS AND LOUISIANA FROM 20N TO 32N
BETWEEN 92W AND 100W HAS DISSIPATED.

ONE 1017 MB ANTICYCLONIC CIRCULATION CENTER IS NEAR 28N89W. A
1016 MB ANTICYCLONIC CIRCULATION CENTER IS NEAR 26N96W. BROAD
SURFACE ANTICYCLONIC WIND FLOW SPANS THE GULF OF MEXICO.

FOR THE OFFSHORE OIL PLATFORM SITES THAT ARE TO THE NORTH OF 27N
TO THE WEST OF 87W/88W...

LOW CLOUD CEILINGS ARE BEING REPORTED AT THE FOLLOWING ICAO
STATIONS...KHQI...KCRH...KVBS...AND KATP. FAIR SKIES/CLEAR SKIES
AT OR LOWER THAN 12000 FEET ARE BEING REPORTED ELSEWHERE.

FOR THE COASTAL PLAINS OF THE U.S.A. FROM THE DEEP SOUTH OF
TEXAS TO FLORIDA...

LOW LEVEL CLOUD CEILINGS COVER THE DEEP SOUTH OF TEXAS... AND
ELSEWHERE IN TEXAS FROM VICTORIA AND PALACIOS NORTHWARD. LOW
LEVEL CLOUD CEILINGS COVER SOUTHERN LOUISIANA...INCLUDING IN THE
AREAS THAT ARE AROUND LAKE PONTCHARTRAIN. MOSTLY SCATTERED AND
SOME BROKEN MULTILAYERED CLOUDS COVER THE COASTAL AREAS OF
MISSISSIPPI AND ALABAMA. FEW TO SCATTERED MULTILAYERED CLOUDS
COVER FLORIDA TO THE WEST OF PERRY. LOW CLOUD CEILINGS COVER
FLORIDA FROM BROOKSVILLE TO THE TAMPA METROPOLITAN AREA...IN THE
AREAS OF FORT MYERS AND NAPLES...AND IN MARATHON IN THE FLORIDA
KEYS.

...THE CARIBBEAN SEA...

AN UPPER LEVEL RIDGE EXTENDS FROM NORTHWESTERN VENEZUELA...
ACROSS NORTHERN COLOMBIA...ACROSS THE SOUTHWESTERN CORNER OF THE
CARIBBEAN SEA...ACROSS CENTRAL AMERICA THROUGH PANAMA...COSTA
RICA...TO WESTERN HONDURAS. HIGH LEVEL MOISTURE IS CURVING FROM
NORTHERN SECTIONS OF COLOMBIA AND VENEZUELA...AND CENTRAL
AMERICA...INTO THE CARIBBEAN SEA...TO THE SOUTH OF 18N TO THE
EAST OF 86W.

BROKEN TO OVERCAST LOW LEVEL AND MIDDLE LEVEL CLOUDS AND
POSSIBLE RAINSHOWERS ARE...FROM 16N TO 21N BETWEEN 60W AND
65W...ACROSS INTERIOR SECTIONS OF HISPANIOLA AND SOUTHEASTERN
CUBA FROM 18N TO 22N BETWEEN 68W AND 78W...FROM 16N TO 20N
BETWEEN 78W AND 86W...AND IN THE ATLANTIC OCEAN FROM 8N TO 12N
BETWEEN 58W AND 62W MOVING TOWARD VENEZUELA AND TRINIDAD...IN
SURFACE TRADEWIND FLOW.

THE 24-HOUR RAINFALL TOTAL IN INCHES FOR THE PERIOD ENDING AT
22/1200 UTC...ACCORDING TO THE PAN AMERICAN TEMPERATURE AND
PRECIPITATION TABLES...MIATPTPAN/SXCA01 KNHC...IS 0.08 IN
GUADELOUPE...0.07 IN ST. THOMAS...AND 0.01 IN SAN JUAN IN PUERTO
RICO.

PLEASE READ THE HIGH SEAS FORECAST...MIAHSFAT2/FZNT02 KNHC...
AND THE OFFSHORE FORECAST...MIAOFFNT3/FZNT23 KNHC...FOR MORE
DETAILS ABOUT...NORTHEAST TO EAST WINDS 20 TO 25 KNOTS AND SEA
HEIGHTS TO 8 FEET FROM 11N TO 13N BETWEEN 74W AND 76W.

...HISPANIOLA...

AN UPPER LEVEL RIDGE EXTENDS FROM NORTHWESTERN VENEZUELA...
ACROSS NORTHERN COLOMBIA...ACROSS THE SOUTHWESTERN CORNER OF THE
CARIBBEAN SEA...ACROSS CENTRAL AMERICA THROUGH PANAMA...COSTA
RICA...TO WESTERN HONDURAS.

A MIDDLE LEVEL TO UPPER LEVEL TROUGH EXTENDS FROM AN ATLANTIC
OCEAN 35N63W CYCLONIC CIRCULATION CENTER TO 25N65W...TO THE
NORTHERN COAST OF HISPANIOLA NEAR THE BORDER OF HAITI AND THE
DOMINICAN REPUBLIC. THE TROUGH SUPPORTS A COLD FRONT THAT PASSES
THROUGH THE ATLANTIC OCEAN NEAR 20N70W TO 20N72W. A SURFACE
TROUGH CONTINUES FROM 20N72W...ACROSS NORTHERN HAITI...THROUGH
THE WATERS THAT ARE BETWEEN HAITI...CUBA...AND JAMAICA TO 19N80W
AND 18N85W IN THE NORTHWESTERN CORNER OF THE CARIBBEAN SEA.

BROKEN TO OVERCAST LOW LEVEL AND MIDDLE LEVEL CLOUDS AND
POSSIBLE RAINSHOWERS ARE ACROSS INTERIOR SECTIONS OF HISPANIOLA
AND SOUTHEASTERN CUBA FROM 18N TO 22N BETWEEN 68W AND
78W...AND FROM 16N TO 20N BETWEEN 78W AND 86W.

CONDITIONS AND CURRENT WEATHER FOR THE DOMINICAN REPUBLIC...
SCATTERED LOW LEVEL CLOUDS AND A MIDDLE LEVEL CLOUD CEILING ARE
IN BARAHONA. SCATTERED LOW LEVEL AND SCATTERED MIDDLE LEVEL
CLOUDS ARE IN SANTO DOMINGO. SCATTERED LOW CLOUDS ARE IN LA
ROMANA. FEW LOW CLOUDS ARE IN PUNTA CANA. SCATTERED LOW CLOUDS
AND SCATTERED MIDDLE LEVEL CLOUDS ARE IN SANTIAGO. SCATTERED LOW
CLOUDS AND A MIDDLE LEVEL CLOUD CEILING COVER PUERTO PLATA. FEW
LOW CLOUDS AND SCATTERED HIGH LEVEL CLOUDS ARE IN PORT-AU-PRINCE
HAITI.

THE GFS MODEL FORECAST FOR 250 MB SHOWS WESTERLY WIND
FLOW...WITH A RIDGE THAT RUNS FROM NORTHERN COLOMBIA ACROSS
CENTRAL AMERICA. THE GFS MODEL FOR 500 MB SHOWS WESTERLY WIND
FLOW...WITH INDIVIDUAL ANTICYCLONIC CIRCULATION CENTERS THAT ARE
FORECAST TO BE PRESENT IN THE CARIBBEAN SEA DURING THE NEXT 48
HOURS. THE GFS MODEL FORECAST FOR 700 MB SHOWS THAT ANTICYCLONIC
WIND FLOW WILL BE ON TOP OF THE AREA...WITH ANTICYCLONIC
CIRCULATION CENTERS AND RIDGES ACROSS THE AREA FOR THE NEXT 48
HOURS.

...THE ATLANTIC OCEAN...

A MIDDLE LEVEL TO UPPER LEVEL CYCLONIC CIRCULATION CENTER IS
NEAR 35N63W. A TROUGH EXTENDS FROM THE CYCLONIC CENTER TO 25N65W
TO THE NORTHERN COAST OF HISPANIOLA NEAR THE BORDER OF HAITI AND
THE DOMINICAN REPUBLIC. THE TROUGH SUPPORTS A COLD FRONT THAT
PASSES THROUGH 32N63W TO 25N66W TO 20N70W AND 20N72W. A SURFACE
TROUGH CONTINUES FROM 20N72W...ACROSS NORTHERN HAITI...THROUGH
THE WATERS THAT ARE BETWEEN HAITI...CUBA...AND JAMAICA TO 19N80W
AND 18N85W IN THE NORTHWESTERN CORNER OF THE CARIBBEAN SEA. A
POST-FRONTAL SURFACE TROUGH IS ALONG 31N68W 27N69W 23N71W.
CONVECTIVE PRECIPITATION...SCATTERED MODERATE TO ISOLATED STRONG
WITHIN 60 NM ON EITHER SIDE OF THE LINE THAT PASSES THROUGH
32N60W 27N62W 24N64W 21N67W. HIGH LEVEL MOISTURE THAT IS TO THE
EAST OF THE TROUGH AND FRONT COVERS THE ATLANTIC OCEAN TO THE
NORTH OF 21N BETWEEN 35W AND THE COLD FRONT.

THE 24-HOUR RAINFALL TOTAL IN INCHES FOR THE PERIOD ENDING AT
22/1200 UTC...ACCORDING TO THE PAN AMERICAN TEMPERATURE AND
PRECIPITATION TABLES...MIATPTPAN/SXCA01 KNHC...IS 0.10 IN
BERMUDA...AND 0.03 IN NASSAU IN THE BAHAMAS.

A MIDDLE LEVEL TO UPPER LEVEL TROUGH IS ALONG 27N18W 20N30W
12N47W. COMPARATIVELY DRIER AIR IN SUBSIDENCE...APPARENT IN
WATER VAPOR IMAGERY...IS WITHIN 300 NM TO 500 NM TO THE
NORTHWEST OF THE LINE 24N21W 14N40W...AND THEN WITHIN 600 NM TO
750 NM TO THE NORTHWEST OF 14N40W 8N57W.

A 1023 MB HIGH PRESSURE CENTER IS NEAR 27N39W. SURFACE
ANTICYCLONIC WIND FLOW COVERS THE ATLANTIC OCEAN AND THE
CARIBBEAN SEA TO THE NORTH OF 10N BETWEEN AFRICA AND 60W.

PLEASE READ THE HIGH SEAS FORECAST...MIAHSFAT2/FZNT02 KNHC...FOR
MORE DETAILS ABOUT...A COLD FRONT FROM 31N63W TO 19N72W. EXPECT
SOUTH TO SOUTHWEST WINDS 20 TO 25 KNOTS AND SEA HEIGHTS 8 FEET
TO THE NORTH OF 25N WITHIN 180 NM TO THE EAST OF THE FRONT.
EXPECT WINDS 20 KNOTS OR LESS AND SEA HEIGHTS TO 8 FEET TO THE
SOUTH OF 14N BETWEEN 40W AND 61W. EXPECT ALSO...FOR THE 06 HOUR
FORECAST WINDS 20 KNOTS OR LESS AND SEA HEIGHTS 8 TO 10 FEET TO
THE NORTH OF 30N BETWEEN 35W AND 44W.

FOR ADDITIONAL INFORMATION PLEASE VISIT
HTTP://WWW.HURRICANES.GOV/MARINE

$$
MT



000
AXPZ20 KNHC 221520
TWDEP

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC TUE APR 22 2014

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND
METEOROLOGICAL ANALYSIS.

BASED ON 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
1500 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

WEAK MONSOON TROUGH EXTENDS FROM 09N85W TO 06N92W. THE ITCZ AXIS
CONTINUES FROM 06N92W TO 05N110W TO 06N130W TO 05N140W. ISOLATED
TO SCATTERED MODERATE CONVECTION IS FROM 04N TO 07N E OF 84W.
SCATTERED MODERATE TO STRONG CONVECTION CAN BE FOUND FROM 02N TO
06N W OF 134W.

...DISCUSSION...

ALOFT...AN UPPER LEVEL TROUGH EXTENDS FROM 31N125W TO BEYOND
25N140W. THIS TROUGH SUPPORTS A COLD FRONT THAT ENTERS THE
FORECAST REGION NEAR 30N126W THEN CONTINUES SW TO 25N140W. FRESH
TO STRONG WINDS FOLLOW THE FRONT WITH SEAS TO 9 FT. NO
SIGNIFICANT WEATHER IS ASSOCIATED WITH THE FRONT WHICH IS
FORECAST TO DISSIPATE ACROSS THE N WATERS LATER TODAY. AN UPPER
LEVEL RIDGE DOMINATES THE BAJA CALIFORNIA PENINSULA AND NW
MEXICO. MODERATE TO STRONG MID TO UPPER LEVEL SUBSIDENCE AND
IMPLIED DRY AIR MASS IS NOTED ON WATER VAPOR IMAGERY N OF 17N E
OF 120W AND FROM 19N-25N W OF 1305W. IN THE DEEP TROPICS...AN
UPPER LEVEL ANTICYCLONIC CIRCULATION IS CENTERED NEAR 7N128W.
UPPER DIFFLUENT ON THE WEST SIDE OF THIS ANTICYCLONE IS HELPING
TO INDUCE CONVECTION W OF 134W. ANOTHER UPPER LEVEL ANTICYCLONIC
CIRCULATION IS NEAR 7N98W. A RIDGE FROM NORTHERN SOUTH AMERICA
EXTENDS WESTWARD COVERING MOST OF CENTRAL AMERICA.

A 1030 MB HIGH PRES LOCATED NEAR 33N147W EXTENDS A RIDGE SE
ACROSS THE FORECAST WATERS TO NEAR 20N110W. TRADE WINDS OF 15-20
KT ARE NOTED PER SCATTEROMETER DATA ON THE SOUTHERN PERIPHERY OF
THE RIDGE AND N OF THE ITCZ AXIS WITH SEAS TO 8 FT. THE HIGH
PRES WILL MOVE EASTWARD TO A POSITION NEAR 33N137W BY 24 HOURS.
THE TRADE WIND FLOW IS EXPECTED TO INCREASE SOME AS PRES
GRADIENT TIGHTENS BETWEEN THE HIGH AND LOWER PRES ALONG THE ITCZ
AXIS. IN ADDITION...EXPECT INCREASING NW TO N WINDS WITH
BUILDING SEAS TO AROUND 11 FT OFF OF NORTHERN BAJA
CALIFORNIA...MAINLY N OF 28N E OF 123W BY WED MORNING.

AN AREA MODERATE TO STRONG CONVECTION IS FROM 09N TO 12N BETWEEN
105W AND 114W. A DIFFLUENT PATTERN ALOFT IS ENHANCING THIS
CONVECTIVE ACTIVITY.

LONG PERIOD NW SWELLS...WITH A LEADING EDGE PERIOD OF 17-18
SECONDS...ARE SPREADING SE ACROSS THE N WATERS RAISING SEAS UP
TO 9 FT N OF 20N W OF 112W. THIS SWELL EVENT WILL MIX WITH
SHORTER PERIOD NE SWELL FROM THE TRADE WIND FLOW TO COVER MOST
OF THE WATERS W OF 110W BY LATE TODAY. CROSS EQUATORIAL SW SWELL
DOMINATES THE REMAINDER OF THE FORECAST WATERS MAINLY E OF 110W.
LARGE SWELLS FROM THE SOUTHERN HEMISPHERE...WITH WAVE PERIOD OF
20-22 SECONDS...WILL CROSS THE EQUATOR ON WED AND WILL PROPAGATE
ACROSS THE SOUTH WATERS ON THU RAISING SEAS UP TO 10 FT E OF
130W AND S OF A LINE FROM 14N130W TO 12N112W TO 3.4S92W. BASED
ON WAVE WATCH GUIDANCE...THIS SWELL EVENT IS FORECAST TO REACH
THE MEXICAN COAST E OF 110W THU NIGHT...AND THE SOUTH PORTION OF
THE GULF OF CALIFORNIA OR SEA OF CORTEZ ON FRI.

EARLY THIS MORNING...A COUPLE OF SHIP OBSERVATIONS INDICATED NE
WINDS IN THE 25-30 KT RANGE ACROSS THE GULF OF PAPAGAYO. WINDS
ARE EXPECTED TO PULSE TO 20 KT ACROSS THIS AREA DURING THE
OVERNIGHT AND EARLY MORNING HOURS WITH THE ASSISTANCE OF THE
NOCTURNAL DRAINAGE FLOW THROUGH THE FORECAST PERIOD.

$$
GR


000
AXPZ20 KNHC 221520
TWDEP

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC TUE APR 22 2014

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND
METEOROLOGICAL ANALYSIS.

BASED ON 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
1500 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

WEAK MONSOON TROUGH EXTENDS FROM 09N85W TO 06N92W. THE ITCZ AXIS
CONTINUES FROM 06N92W TO 05N110W TO 06N130W TO 05N140W. ISOLATED
TO SCATTERED MODERATE CONVECTION IS FROM 04N TO 07N E OF 84W.
SCATTERED MODERATE TO STRONG CONVECTION CAN BE FOUND FROM 02N TO
06N W OF 134W.

...DISCUSSION...

ALOFT...AN UPPER LEVEL TROUGH EXTENDS FROM 31N125W TO BEYOND
25N140W. THIS TROUGH SUPPORTS A COLD FRONT THAT ENTERS THE
FORECAST REGION NEAR 30N126W THEN CONTINUES SW TO 25N140W. FRESH
TO STRONG WINDS FOLLOW THE FRONT WITH SEAS TO 9 FT. NO
SIGNIFICANT WEATHER IS ASSOCIATED WITH THE FRONT WHICH IS
FORECAST TO DISSIPATE ACROSS THE N WATERS LATER TODAY. AN UPPER
LEVEL RIDGE DOMINATES THE BAJA CALIFORNIA PENINSULA AND NW
MEXICO. MODERATE TO STRONG MID TO UPPER LEVEL SUBSIDENCE AND
IMPLIED DRY AIR MASS IS NOTED ON WATER VAPOR IMAGERY N OF 17N E
OF 120W AND FROM 19N-25N W OF 1305W. IN THE DEEP TROPICS...AN
UPPER LEVEL ANTICYCLONIC CIRCULATION IS CENTERED NEAR 7N128W.
UPPER DIFFLUENT ON THE WEST SIDE OF THIS ANTICYCLONE IS HELPING
TO INDUCE CONVECTION W OF 134W. ANOTHER UPPER LEVEL ANTICYCLONIC
CIRCULATION IS NEAR 7N98W. A RIDGE FROM NORTHERN SOUTH AMERICA
EXTENDS WESTWARD COVERING MOST OF CENTRAL AMERICA.

A 1030 MB HIGH PRES LOCATED NEAR 33N147W EXTENDS A RIDGE SE
ACROSS THE FORECAST WATERS TO NEAR 20N110W. TRADE WINDS OF 15-20
KT ARE NOTED PER SCATTEROMETER DATA ON THE SOUTHERN PERIPHERY OF
THE RIDGE AND N OF THE ITCZ AXIS WITH SEAS TO 8 FT. THE HIGH
PRES WILL MOVE EASTWARD TO A POSITION NEAR 33N137W BY 24 HOURS.
THE TRADE WIND FLOW IS EXPECTED TO INCREASE SOME AS PRES
GRADIENT TIGHTENS BETWEEN THE HIGH AND LOWER PRES ALONG THE ITCZ
AXIS. IN ADDITION...EXPECT INCREASING NW TO N WINDS WITH
BUILDING SEAS TO AROUND 11 FT OFF OF NORTHERN BAJA
CALIFORNIA...MAINLY N OF 28N E OF 123W BY WED MORNING.

AN AREA MODERATE TO STRONG CONVECTION IS FROM 09N TO 12N BETWEEN
105W AND 114W. A DIFFLUENT PATTERN ALOFT IS ENHANCING THIS
CONVECTIVE ACTIVITY.

LONG PERIOD NW SWELLS...WITH A LEADING EDGE PERIOD OF 17-18
SECONDS...ARE SPREADING SE ACROSS THE N WATERS RAISING SEAS UP
TO 9 FT N OF 20N W OF 112W. THIS SWELL EVENT WILL MIX WITH
SHORTER PERIOD NE SWELL FROM THE TRADE WIND FLOW TO COVER MOST
OF THE WATERS W OF 110W BY LATE TODAY. CROSS EQUATORIAL SW SWELL
DOMINATES THE REMAINDER OF THE FORECAST WATERS MAINLY E OF 110W.
LARGE SWELLS FROM THE SOUTHERN HEMISPHERE...WITH WAVE PERIOD OF
20-22 SECONDS...WILL CROSS THE EQUATOR ON WED AND WILL PROPAGATE
ACROSS THE SOUTH WATERS ON THU RAISING SEAS UP TO 10 FT E OF
130W AND S OF A LINE FROM 14N130W TO 12N112W TO 3.4S92W. BASED
ON WAVE WATCH GUIDANCE...THIS SWELL EVENT IS FORECAST TO REACH
THE MEXICAN COAST E OF 110W THU NIGHT...AND THE SOUTH PORTION OF
THE GULF OF CALIFORNIA OR SEA OF CORTEZ ON FRI.

EARLY THIS MORNING...A COUPLE OF SHIP OBSERVATIONS INDICATED NE
WINDS IN THE 25-30 KT RANGE ACROSS THE GULF OF PAPAGAYO. WINDS
ARE EXPECTED TO PULSE TO 20 KT ACROSS THIS AREA DURING THE
OVERNIGHT AND EARLY MORNING HOURS WITH THE ASSISTANCE OF THE
NOCTURNAL DRAINAGE FLOW THROUGH THE FORECAST PERIOD.

$$
GR


000
AXPZ20 KNHC 221520
TWDEP

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC TUE APR 22 2014

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND
METEOROLOGICAL ANALYSIS.

BASED ON 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
1500 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

WEAK MONSOON TROUGH EXTENDS FROM 09N85W TO 06N92W. THE ITCZ AXIS
CONTINUES FROM 06N92W TO 05N110W TO 06N130W TO 05N140W. ISOLATED
TO SCATTERED MODERATE CONVECTION IS FROM 04N TO 07N E OF 84W.
SCATTERED MODERATE TO STRONG CONVECTION CAN BE FOUND FROM 02N TO
06N W OF 134W.

...DISCUSSION...

ALOFT...AN UPPER LEVEL TROUGH EXTENDS FROM 31N125W TO BEYOND
25N140W. THIS TROUGH SUPPORTS A COLD FRONT THAT ENTERS THE
FORECAST REGION NEAR 30N126W THEN CONTINUES SW TO 25N140W. FRESH
TO STRONG WINDS FOLLOW THE FRONT WITH SEAS TO 9 FT. NO
SIGNIFICANT WEATHER IS ASSOCIATED WITH THE FRONT WHICH IS
FORECAST TO DISSIPATE ACROSS THE N WATERS LATER TODAY. AN UPPER
LEVEL RIDGE DOMINATES THE BAJA CALIFORNIA PENINSULA AND NW
MEXICO. MODERATE TO STRONG MID TO UPPER LEVEL SUBSIDENCE AND
IMPLIED DRY AIR MASS IS NOTED ON WATER VAPOR IMAGERY N OF 17N E
OF 120W AND FROM 19N-25N W OF 1305W. IN THE DEEP TROPICS...AN
UPPER LEVEL ANTICYCLONIC CIRCULATION IS CENTERED NEAR 7N128W.
UPPER DIFFLUENT ON THE WEST SIDE OF THIS ANTICYCLONE IS HELPING
TO INDUCE CONVECTION W OF 134W. ANOTHER UPPER LEVEL ANTICYCLONIC
CIRCULATION IS NEAR 7N98W. A RIDGE FROM NORTHERN SOUTH AMERICA
EXTENDS WESTWARD COVERING MOST OF CENTRAL AMERICA.

A 1030 MB HIGH PRES LOCATED NEAR 33N147W EXTENDS A RIDGE SE
ACROSS THE FORECAST WATERS TO NEAR 20N110W. TRADE WINDS OF 15-20
KT ARE NOTED PER SCATTEROMETER DATA ON THE SOUTHERN PERIPHERY OF
THE RIDGE AND N OF THE ITCZ AXIS WITH SEAS TO 8 FT. THE HIGH
PRES WILL MOVE EASTWARD TO A POSITION NEAR 33N137W BY 24 HOURS.
THE TRADE WIND FLOW IS EXPECTED TO INCREASE SOME AS PRES
GRADIENT TIGHTENS BETWEEN THE HIGH AND LOWER PRES ALONG THE ITCZ
AXIS. IN ADDITION...EXPECT INCREASING NW TO N WINDS WITH
BUILDING SEAS TO AROUND 11 FT OFF OF NORTHERN BAJA
CALIFORNIA...MAINLY N OF 28N E OF 123W BY WED MORNING.

AN AREA MODERATE TO STRONG CONVECTION IS FROM 09N TO 12N BETWEEN
105W AND 114W. A DIFFLUENT PATTERN ALOFT IS ENHANCING THIS
CONVECTIVE ACTIVITY.

LONG PERIOD NW SWELLS...WITH A LEADING EDGE PERIOD OF 17-18
SECONDS...ARE SPREADING SE ACROSS THE N WATERS RAISING SEAS UP
TO 9 FT N OF 20N W OF 112W. THIS SWELL EVENT WILL MIX WITH
SHORTER PERIOD NE SWELL FROM THE TRADE WIND FLOW TO COVER MOST
OF THE WATERS W OF 110W BY LATE TODAY. CROSS EQUATORIAL SW SWELL
DOMINATES THE REMAINDER OF THE FORECAST WATERS MAINLY E OF 110W.
LARGE SWELLS FROM THE SOUTHERN HEMISPHERE...WITH WAVE PERIOD OF
20-22 SECONDS...WILL CROSS THE EQUATOR ON WED AND WILL PROPAGATE
ACROSS THE SOUTH WATERS ON THU RAISING SEAS UP TO 10 FT E OF
130W AND S OF A LINE FROM 14N130W TO 12N112W TO 3.4S92W. BASED
ON WAVE WATCH GUIDANCE...THIS SWELL EVENT IS FORECAST TO REACH
THE MEXICAN COAST E OF 110W THU NIGHT...AND THE SOUTH PORTION OF
THE GULF OF CALIFORNIA OR SEA OF CORTEZ ON FRI.

EARLY THIS MORNING...A COUPLE OF SHIP OBSERVATIONS INDICATED NE
WINDS IN THE 25-30 KT RANGE ACROSS THE GULF OF PAPAGAYO. WINDS
ARE EXPECTED TO PULSE TO 20 KT ACROSS THIS AREA DURING THE
OVERNIGHT AND EARLY MORNING HOURS WITH THE ASSISTANCE OF THE
NOCTURNAL DRAINAGE FLOW THROUGH THE FORECAST PERIOD.

$$
GR


000
AXPZ20 KNHC 221520
TWDEP

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC TUE APR 22 2014

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND
METEOROLOGICAL ANALYSIS.

BASED ON 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
1500 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

WEAK MONSOON TROUGH EXTENDS FROM 09N85W TO 06N92W. THE ITCZ AXIS
CONTINUES FROM 06N92W TO 05N110W TO 06N130W TO 05N140W. ISOLATED
TO SCATTERED MODERATE CONVECTION IS FROM 04N TO 07N E OF 84W.
SCATTERED MODERATE TO STRONG CONVECTION CAN BE FOUND FROM 02N TO
06N W OF 134W.

...DISCUSSION...

ALOFT...AN UPPER LEVEL TROUGH EXTENDS FROM 31N125W TO BEYOND
25N140W. THIS TROUGH SUPPORTS A COLD FRONT THAT ENTERS THE
FORECAST REGION NEAR 30N126W THEN CONTINUES SW TO 25N140W. FRESH
TO STRONG WINDS FOLLOW THE FRONT WITH SEAS TO 9 FT. NO
SIGNIFICANT WEATHER IS ASSOCIATED WITH THE FRONT WHICH IS
FORECAST TO DISSIPATE ACROSS THE N WATERS LATER TODAY. AN UPPER
LEVEL RIDGE DOMINATES THE BAJA CALIFORNIA PENINSULA AND NW
MEXICO. MODERATE TO STRONG MID TO UPPER LEVEL SUBSIDENCE AND
IMPLIED DRY AIR MASS IS NOTED ON WATER VAPOR IMAGERY N OF 17N E
OF 120W AND FROM 19N-25N W OF 1305W. IN THE DEEP TROPICS...AN
UPPER LEVEL ANTICYCLONIC CIRCULATION IS CENTERED NEAR 7N128W.
UPPER DIFFLUENT ON THE WEST SIDE OF THIS ANTICYCLONE IS HELPING
TO INDUCE CONVECTION W OF 134W. ANOTHER UPPER LEVEL ANTICYCLONIC
CIRCULATION IS NEAR 7N98W. A RIDGE FROM NORTHERN SOUTH AMERICA
EXTENDS WESTWARD COVERING MOST OF CENTRAL AMERICA.

A 1030 MB HIGH PRES LOCATED NEAR 33N147W EXTENDS A RIDGE SE
ACROSS THE FORECAST WATERS TO NEAR 20N110W. TRADE WINDS OF 15-20
KT ARE NOTED PER SCATTEROMETER DATA ON THE SOUTHERN PERIPHERY OF
THE RIDGE AND N OF THE ITCZ AXIS WITH SEAS TO 8 FT. THE HIGH
PRES WILL MOVE EASTWARD TO A POSITION NEAR 33N137W BY 24 HOURS.
THE TRADE WIND FLOW IS EXPECTED TO INCREASE SOME AS PRES
GRADIENT TIGHTENS BETWEEN THE HIGH AND LOWER PRES ALONG THE ITCZ
AXIS. IN ADDITION...EXPECT INCREASING NW TO N WINDS WITH
BUILDING SEAS TO AROUND 11 FT OFF OF NORTHERN BAJA
CALIFORNIA...MAINLY N OF 28N E OF 123W BY WED MORNING.

AN AREA MODERATE TO STRONG CONVECTION IS FROM 09N TO 12N BETWEEN
105W AND 114W. A DIFFLUENT PATTERN ALOFT IS ENHANCING THIS
CONVECTIVE ACTIVITY.

LONG PERIOD NW SWELLS...WITH A LEADING EDGE PERIOD OF 17-18
SECONDS...ARE SPREADING SE ACROSS THE N WATERS RAISING SEAS UP
TO 9 FT N OF 20N W OF 112W. THIS SWELL EVENT WILL MIX WITH
SHORTER PERIOD NE SWELL FROM THE TRADE WIND FLOW TO COVER MOST
OF THE WATERS W OF 110W BY LATE TODAY. CROSS EQUATORIAL SW SWELL
DOMINATES THE REMAINDER OF THE FORECAST WATERS MAINLY E OF 110W.
LARGE SWELLS FROM THE SOUTHERN HEMISPHERE...WITH WAVE PERIOD OF
20-22 SECONDS...WILL CROSS THE EQUATOR ON WED AND WILL PROPAGATE
ACROSS THE SOUTH WATERS ON THU RAISING SEAS UP TO 10 FT E OF
130W AND S OF A LINE FROM 14N130W TO 12N112W TO 3.4S92W. BASED
ON WAVE WATCH GUIDANCE...THIS SWELL EVENT IS FORECAST TO REACH
THE MEXICAN COAST E OF 110W THU NIGHT...AND THE SOUTH PORTION OF
THE GULF OF CALIFORNIA OR SEA OF CORTEZ ON FRI.

EARLY THIS MORNING...A COUPLE OF SHIP OBSERVATIONS INDICATED NE
WINDS IN THE 25-30 KT RANGE ACROSS THE GULF OF PAPAGAYO. WINDS
ARE EXPECTED TO PULSE TO 20 KT ACROSS THIS AREA DURING THE
OVERNIGHT AND EARLY MORNING HOURS WITH THE ASSISTANCE OF THE
NOCTURNAL DRAINAGE FLOW THROUGH THE FORECAST PERIOD.

$$
GR


000
AXNT20 KNHC 221022
TWDAT

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
805 AM EST TUE APR 22 2014

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL
AMERICA...GULF OF MEXICO...CARIBBEAN SEA...NORTHERN SECTIONS OF
SOUTH AMERICA...AND ATLANTIC OCEAN TO THE AFRICAN COAST FROM THE
EQUATOR TO 32N. THE FOLLOWING INFORMATION IS BASED ON SATELLITE
IMAGERY...WEATHER OBSERVATIONS...RADAR...AND METEOROLOGICAL
ANALYSIS.

BASED ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
1115 UTC.

...THE ITCZ/MONSOON TROUGH...

THE MONSOON TROUGH PASSES THROUGH COASTAL SECTIONS OF SENEGAL
NEAR 12N16W TO 04N24W. THE ITCZ CONTINUES FROM THERE CROSSING
THE EQUATOR ALONG 38W TO 02S45W NEAR THE COAST OF BRAZIL. A
SURFACE TROUGH...A CONVERGENCE LINE...EXISTS FROM THE COAST OF
LIBERIA NEAR 06N10W TO 04N24W. NUMEROUS MODERATE SCATTERED
STRONG CONVECTION WAS NOTED SOUTH OF THE SURFACE TROUGH
EAST OF 25W.

...DISCUSSION...

...THE GULF OF MEXICO...

A BROAD 1017 MB SURFACE HIGH IS CENTERED SOUTH OF COASTAL
MISSISSIPPI AT 28N89W.  A SECOND BROAD HIGH OF 1018 MB IS
LOCATED NEAR SOUTHERNMOST TEXAS AT 26N97W.  DUE TO A FLAT
PRESSURE GRADIENT...SURFACE WINDS ACROSS THE GULF ARE GENTLE
BREEZE OR WEAKER.  ISOLATED DEEP CONVECTION FIRED UP OVER THE
HIGH TERRAIN OF MEXICO DURING THE LATE AFTERNOON DIURNAL MAXIMUM
YESTERDAY.  FORCING FOR THIS DEEP CONVECTION NORTH OF 25N MAY BE
DUE IN PART TO A MID TO UPPER LEVEL TROUGH MOVING ACROSS TEXAS.
A COUPLE OF ISOLATED THUNDERSTORMS ARE STILL OCCURRING ALONG THE
EASTERN FLANK OF THE SIERRA MADRE MOUNTAINS...THOUGH THESE
SHOULD DIMINISH SHORTLY.  ELSEWHERE ACROSS THE GULF...NO
SIGNIFICANT DEEP CONVECTION OR SHOWERS ARE OCCURRING.  OVER THE
NEXT TWO DAYS...THE WEAK HIGH SHOULD REMAIN RELATIVELY
STATIONARY OVER THE GULF.  A WEAK COOL FRONT WILL APPROACH THE
U.S. GULF COAST LATE TODAY AND MAY BARELY REACH THE NORTHERN
GULF.  DEEP CONVECTION MAY OCCUR IN ASSOCIATION WITH THIS WEAK
FRONT...BUT WITH LITTLE TO NO MOIST SOUTHERLY RETURN FLOW IN
ADVANCE...EXPECT THE EXTENT OF THUNDERSTORMS TO BE RATHER
LIMITED.

...THE CARIBBEAN SEA...

A SURFACE TROUGH EXTENDS FROM HAITI TO THE NORTHWESTERN
CARIBBEAN SEA.  THIS...ALONG WITH SOME SUBSTANTIAL LOW-LEVEL
MOISTURE DEPICTED IN THE TOTAL PRECIPITABLE WATER IMAGERY...
PROMOTED DEVELOPMENT OF ISOLATED DEEP CONVECTION IN ASSOCIATION
WITH AFTERNOON HEATING OVER EASTERN CUBA...JAMAICA...THE EASTERN
BAHAMAS...AND HISPANIOLA LATE ON MONDAY. WITH THE NORTH-SOUTH
PRESSURE GRADIENT RATHER FLAT...EASTERLY TRADES ACROSS THE
CARIBBEAN ARE MODERATE TO GENTLE BREEZES...WITH THE EXCEPTION OF
FRESH BREEZE NORTHEASTERLIES JUST NORTH OF COLOMBIA.  IF
ANYTHING...THE PRESSURE GRADIENT AND ASSOCIATED TRADEWINDS MAY
WEAKEN EVEN MORE DURING THE NEXT TWO DAYS. AS THE TROUGH IS
EXPECTED TO DISSIPATE IN THE NEXT DAY OR SO...THIS MAY REDUCE
CHANCES OF DEEP CONVECTION OVER THE NEXT TWO DAYS OVER THE
CARIBBEAN...WHICH IS OVERLAID BY SUBSIDENT UPPER LEVEL
WESTERLIES TYPICAL FOR THIS TIME OF YEAR.

...HISPANIOLA...

A SURFACE TROUGH EXTENDS FROM HAITI TO THE NORTHWESTERN
CARIBBEAN SEA.  THIS...ALONG WITH SOME SUBSTANTIAL LOW-LEVEL
MOISTURE DEPICTED IN THE TOTAL PRECIPITABLE WATER IMAGERY...
PROMOTED DEVELOPMENT OF ISOLATED DEEP CONVECTION IN ASSOCIATION
WITH AFTERNOON HEATING OVER HISPANIOLA LATE ON MONDAY. AS THE
SURFACE TROUGH IS EXPECTED TO DISSIPATE IN THE NEXT DAY OR
SO...THIS MAY REDUCE CHANCES OF DEEP CONVECTION OVER THE NEXT
TWO DAYS OVER HISPANIOLA...WHICH IS OVERLAID BY SUBSIDENT UPPER
LEVEL WESTERLIES TYPICAL FOR THIS TIME OF YEAR.

...THE ATLANTIC OCEAN...

A 1002 MB SURFACE LOW WAS LOCATED A FEW HUNDRED MILES EAST OF
NORTH CAROLINA NEAR 34N67W.  A COLD FRONT FROM THE LOW EXTENDS
SOUTHWESTWARD IN OUR AREA FROM 32N64W TO HISPANIOLA.  ISOLATED
DEEP CONVECTION EXISTS WITHIN 60 NM OF THE FRONT NORTH OF 28N.
SURFACE SOUTHWESTERLY WINDS AHEAD OF FRONT ARE FRESH TO STRONG
BREEZE CONDITIONS...BUT ARE WEAKER BEHIND THE FRONT.  A SURFACE
TROUGH ALSO IS PRESENT FROM THE LOW SOUTHWESTWARD TO THE EASTERN
BAHAMAS...THOUGH THIS FEATURE HAS NO SIGNIFICANT CONVECTION OR
WINDS WITH IT.  THE LOW IS VERTICALLY STACKED WITH AN UPPER LOW
OBSERVED IN THE WATER VAPOR IMAGERY AT THE SAME LOCATION.  THE
UPPER LOW IS STARTING TO OPEN UP INTO A TROUGH AND BE ADVECTED
QUICKLY TOWARD THE EAST.  THE COLD FRONT ASSOCIATED WITH THE LOW
HAS LIMITED BAROCLINICITY...BUT IT WILL CONTINUE TO INITIATE
ISOLATED TO SCATTERED DEEP CONVECTION ALONG AND JUST EAST OF THE
FRONT.  IN A COUPLE OF DAYS...THE LOW AND THE FRONT WILL BE
ABSORBED WITHIN A NEWLY DEVELOPING EXTRATROPICAL LOW AND MORE
VIGOROUS COLD FRONT...THE LATTER WILL REACH OUR NORTHERN BORDER
LATE WEDNESDAY.

FARTHER EAST...A FRONTAL BOUNDARY STRADDLES THE NORTHERN BORDER
FROM 32N48W TO 30N37W TO 32N29W WITH THE WESTERNMOST PORTION
BEING A WARM FRONT AND THE REMAINDER A COLD FRONT. THIS FRONTAL
BOUNDARY IS WELL-DEFINED...THOUGH SURFACE WINDS IN ASSOCIATION
WITH IT ONLY REACH FRESH BREEZE CONDITIONS.  THE FRONT WILL
PROGRESS EASTWARD...BUT NOT MUCH FARTHER EQUATORWARD...AND HAVE
LIMITED TO NO ASSOCIATED DEEP CONVECTION.

ELSEWHERE...A 1022 MB SURFACE HIGH IS LOCATED AT 29N45W WITH
ASSOCIATED RIDGING EXTENDING ZONALLY ACROSS MOST OF THE ATLANTIC
AROUND 28N.  THE MODEST PRESSURE GRADIENT EQUATORWARD OF THE
RIDGE IS PRODUCING TRADEWINDS OF AT MOST FRESH BREEZE
CONDITIONS.  LITTLE CHANGE IS EXPECTED FOR THE NEXT COUPLE OF
DAYS.

FOR ADDITIONAL INFORMATION PLEASE VISIT
HTTP://WWW.HURRICANES.GOV/MARINE

$$
LANDSEA



000
AXNT20 KNHC 221022
TWDAT

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
805 AM EST TUE APR 22 2014

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL
AMERICA...GULF OF MEXICO...CARIBBEAN SEA...NORTHERN SECTIONS OF
SOUTH AMERICA...AND ATLANTIC OCEAN TO THE AFRICAN COAST FROM THE
EQUATOR TO 32N. THE FOLLOWING INFORMATION IS BASED ON SATELLITE
IMAGERY...WEATHER OBSERVATIONS...RADAR...AND METEOROLOGICAL
ANALYSIS.

BASED ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
1115 UTC.

...THE ITCZ/MONSOON TROUGH...

THE MONSOON TROUGH PASSES THROUGH COASTAL SECTIONS OF SENEGAL
NEAR 12N16W TO 04N24W. THE ITCZ CONTINUES FROM THERE CROSSING
THE EQUATOR ALONG 38W TO 02S45W NEAR THE COAST OF BRAZIL. A
SURFACE TROUGH...A CONVERGENCE LINE...EXISTS FROM THE COAST OF
LIBERIA NEAR 06N10W TO 04N24W. NUMEROUS MODERATE SCATTERED
STRONG CONVECTION WAS NOTED SOUTH OF THE SURFACE TROUGH
EAST OF 25W.

...DISCUSSION...

...THE GULF OF MEXICO...

A BROAD 1017 MB SURFACE HIGH IS CENTERED SOUTH OF COASTAL
MISSISSIPPI AT 28N89W.  A SECOND BROAD HIGH OF 1018 MB IS
LOCATED NEAR SOUTHERNMOST TEXAS AT 26N97W.  DUE TO A FLAT
PRESSURE GRADIENT...SURFACE WINDS ACROSS THE GULF ARE GENTLE
BREEZE OR WEAKER.  ISOLATED DEEP CONVECTION FIRED UP OVER THE
HIGH TERRAIN OF MEXICO DURING THE LATE AFTERNOON DIURNAL MAXIMUM
YESTERDAY.  FORCING FOR THIS DEEP CONVECTION NORTH OF 25N MAY BE
DUE IN PART TO A MID TO UPPER LEVEL TROUGH MOVING ACROSS TEXAS.
A COUPLE OF ISOLATED THUNDERSTORMS ARE STILL OCCURRING ALONG THE
EASTERN FLANK OF THE SIERRA MADRE MOUNTAINS...THOUGH THESE
SHOULD DIMINISH SHORTLY.  ELSEWHERE ACROSS THE GULF...NO
SIGNIFICANT DEEP CONVECTION OR SHOWERS ARE OCCURRING.  OVER THE
NEXT TWO DAYS...THE WEAK HIGH SHOULD REMAIN RELATIVELY
STATIONARY OVER THE GULF.  A WEAK COOL FRONT WILL APPROACH THE
U.S. GULF COAST LATE TODAY AND MAY BARELY REACH THE NORTHERN
GULF.  DEEP CONVECTION MAY OCCUR IN ASSOCIATION WITH THIS WEAK
FRONT...BUT WITH LITTLE TO NO MOIST SOUTHERLY RETURN FLOW IN
ADVANCE...EXPECT THE EXTENT OF THUNDERSTORMS TO BE RATHER
LIMITED.

...THE CARIBBEAN SEA...

A SURFACE TROUGH EXTENDS FROM HAITI TO THE NORTHWESTERN
CARIBBEAN SEA.  THIS...ALONG WITH SOME SUBSTANTIAL LOW-LEVEL
MOISTURE DEPICTED IN THE TOTAL PRECIPITABLE WATER IMAGERY...
PROMOTED DEVELOPMENT OF ISOLATED DEEP CONVECTION IN ASSOCIATION
WITH AFTERNOON HEATING OVER EASTERN CUBA...JAMAICA...THE EASTERN
BAHAMAS...AND HISPANIOLA LATE ON MONDAY. WITH THE NORTH-SOUTH
PRESSURE GRADIENT RATHER FLAT...EASTERLY TRADES ACROSS THE
CARIBBEAN ARE MODERATE TO GENTLE BREEZES...WITH THE EXCEPTION OF
FRESH BREEZE NORTHEASTERLIES JUST NORTH OF COLOMBIA.  IF
ANYTHING...THE PRESSURE GRADIENT AND ASSOCIATED TRADEWINDS MAY
WEAKEN EVEN MORE DURING THE NEXT TWO DAYS. AS THE TROUGH IS
EXPECTED TO DISSIPATE IN THE NEXT DAY OR SO...THIS MAY REDUCE
CHANCES OF DEEP CONVECTION OVER THE NEXT TWO DAYS OVER THE
CARIBBEAN...WHICH IS OVERLAID BY SUBSIDENT UPPER LEVEL
WESTERLIES TYPICAL FOR THIS TIME OF YEAR.

...HISPANIOLA...

A SURFACE TROUGH EXTENDS FROM HAITI TO THE NORTHWESTERN
CARIBBEAN SEA.  THIS...ALONG WITH SOME SUBSTANTIAL LOW-LEVEL
MOISTURE DEPICTED IN THE TOTAL PRECIPITABLE WATER IMAGERY...
PROMOTED DEVELOPMENT OF ISOLATED DEEP CONVECTION IN ASSOCIATION
WITH AFTERNOON HEATING OVER HISPANIOLA LATE ON MONDAY. AS THE
SURFACE TROUGH IS EXPECTED TO DISSIPATE IN THE NEXT DAY OR
SO...THIS MAY REDUCE CHANCES OF DEEP CONVECTION OVER THE NEXT
TWO DAYS OVER HISPANIOLA...WHICH IS OVERLAID BY SUBSIDENT UPPER
LEVEL WESTERLIES TYPICAL FOR THIS TIME OF YEAR.

...THE ATLANTIC OCEAN...

A 1002 MB SURFACE LOW WAS LOCATED A FEW HUNDRED MILES EAST OF
NORTH CAROLINA NEAR 34N67W.  A COLD FRONT FROM THE LOW EXTENDS
SOUTHWESTWARD IN OUR AREA FROM 32N64W TO HISPANIOLA.  ISOLATED
DEEP CONVECTION EXISTS WITHIN 60 NM OF THE FRONT NORTH OF 28N.
SURFACE SOUTHWESTERLY WINDS AHEAD OF FRONT ARE FRESH TO STRONG
BREEZE CONDITIONS...BUT ARE WEAKER BEHIND THE FRONT.  A SURFACE
TROUGH ALSO IS PRESENT FROM THE LOW SOUTHWESTWARD TO THE EASTERN
BAHAMAS...THOUGH THIS FEATURE HAS NO SIGNIFICANT CONVECTION OR
WINDS WITH IT.  THE LOW IS VERTICALLY STACKED WITH AN UPPER LOW
OBSERVED IN THE WATER VAPOR IMAGERY AT THE SAME LOCATION.  THE
UPPER LOW IS STARTING TO OPEN UP INTO A TROUGH AND BE ADVECTED
QUICKLY TOWARD THE EAST.  THE COLD FRONT ASSOCIATED WITH THE LOW
HAS LIMITED BAROCLINICITY...BUT IT WILL CONTINUE TO INITIATE
ISOLATED TO SCATTERED DEEP CONVECTION ALONG AND JUST EAST OF THE
FRONT.  IN A COUPLE OF DAYS...THE LOW AND THE FRONT WILL BE
ABSORBED WITHIN A NEWLY DEVELOPING EXTRATROPICAL LOW AND MORE
VIGOROUS COLD FRONT...THE LATTER WILL REACH OUR NORTHERN BORDER
LATE WEDNESDAY.

FARTHER EAST...A FRONTAL BOUNDARY STRADDLES THE NORTHERN BORDER
FROM 32N48W TO 30N37W TO 32N29W WITH THE WESTERNMOST PORTION
BEING A WARM FRONT AND THE REMAINDER A COLD FRONT. THIS FRONTAL
BOUNDARY IS WELL-DEFINED...THOUGH SURFACE WINDS IN ASSOCIATION
WITH IT ONLY REACH FRESH BREEZE CONDITIONS.  THE FRONT WILL
PROGRESS EASTWARD...BUT NOT MUCH FARTHER EQUATORWARD...AND HAVE
LIMITED TO NO ASSOCIATED DEEP CONVECTION.

ELSEWHERE...A 1022 MB SURFACE HIGH IS LOCATED AT 29N45W WITH
ASSOCIATED RIDGING EXTENDING ZONALLY ACROSS MOST OF THE ATLANTIC
AROUND 28N.  THE MODEST PRESSURE GRADIENT EQUATORWARD OF THE
RIDGE IS PRODUCING TRADEWINDS OF AT MOST FRESH BREEZE
CONDITIONS.  LITTLE CHANGE IS EXPECTED FOR THE NEXT COUPLE OF
DAYS.

FOR ADDITIONAL INFORMATION PLEASE VISIT
HTTP://WWW.HURRICANES.GOV/MARINE

$$
LANDSEA


000
AXPZ20 KNHC 220910
TWDEP

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC TUE APR 22 2014

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND
METEOROLOGICAL ANALYSIS.

BASED ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
0900 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

MONSOON TROUGH 7N77W TO 4N84W. ITCZ FROM 5N114W TO 4N140W.
SCATTERED MODERATE ISOLATED STRONG CONVECTION FROM 6N-12N
BETWEEN 105W-120W. SCATTERED MODERATE TO STRONG CONVECTION
WITHIN 150 NM EITHER SIDE OF AXIS FROM 130W-140W.

...DISCUSSION...

AN UPPER LEVEL TROUGH ACROSS THE FAR NW PORTION OF THE
DISCUSSION AREA FROM 32N129W TO 24N140W. AN UPPER LEVEL RIDGE
EXTENDS FROM NW MEXICO TO 20N110W. STRONG SUBSIDENCE WITH DRY
AND STABLE AIR AT THE MIDDLE AND UPPER LEVELS IS N OF 17N
BETWEEN 105W-115W AND FROM 15N-25N W OF 115W. IN THE DEEP
TROPICS AN UPPER LEVEL ANTICYCLONIC CIRCULATION IS CENTERED NEAR
6N131W. ANOTHER UPPER LEVEL ANTICYCLONIC CIRCULATION IS NEAR THE
COAST OF EL SALVADOR NEAR 13N89W.

A LARGE SURFACE RIDGE IS N OF 12N W OF 105W. THE PRES GRADIENT
BETWEEN THE RIDGE AND THE ITCZ IS TIGHT ENOUGH FOR 15-20 KT
TRADE WINDS AND SEAS TO 8 FT FROM 5N-20N W OF 120W. OTHERWISE AN
AREA OF LARGE NW SWELL IS NW OF A LINE FROM 28N115W TO 15N120W
TO 5N140W...WITH SEAS 8-10 FT.

A WEAK COLD FRONT IS ACROSS THE NW PORTION OF THE AREA FROM
32N130W TO 27N140W. NO SIGNIFICANT WEATHER ASSOCIATED WITH THE
FRONT.

$$
DGS



    US Dept of Commerce
    National Oceanic and Atmospheric Administration
    National Weather Service
    1325 East West Highway
    Silver Spring, MD 20910
    Page Author: NWS Internet Services Team
Disclaimer
Information Quality
Credits
Glossary
Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities