000
ATHW40 PHFO 190031
SIMHI

HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI
0030 UTC SUN MAY 19 2013

BASED ON DATA THROUGH 0000 UTC MAY 19 2013

WATER VAPOR IMAGERY SHOWS A SHARP UPPER LEVEL TROUGH NEAR 29N158W...
OR OVER 500 MILES NORTH OF HONOLULU. THIS TROUGH IS MOVING TO THE
EAST-SOUTHEAST AT 20 MPH. A CLOUD BAND ASSOCIATED WITH A SURFACE
FRONT IS AROUND 150 MILES WIDE...AND THE LEADING EDGE EXTENDS FROM
30N153W TO 27N157W TO 25N170W. THIS FRONTAL CLOUD BAND IS COMPOSED
PRIMARILY OF BROKEN TO OVERCAST CUMULUS...WITH EMBEDDED TOWERING
CUMULUS ELEMENTS. ISOLATED CUMULONIMBUS CLOUDS ARE LOCATED CLOSER TO
THE UPPER LEVEL TROUGH...IN THE AREA NORTH OF 28N BETWEEN 155W AND
158W. CLOUD TOPS EXTEND UP TO 39000 FT.

CLOSER TO THE ISLANDS...AN UPPER LEVEL LOW IS LOCATED NEAR
23N153W...OR ABOUT 250 MILES NORTHEAST OF HILO. THIS LOW IS MOVING
TO THE EAST AT 10 MPH. BROKEN CIRRUS AND CIRROCUMULUS CLOUDS ARE
ASSOCIATED WITH THE LOW AND THE UPPER TROUGH...AND ARE LOCATED
GENERALLY NORTH OF 23N BETWEEN 140W AND 155W. THESE HIGH CLOUDS ARE
MOVING TO THE NORTH AND NORTHEAST AT 20 TO 30 MPH.

AREAS OF LOW CLOUDS ARE LOCATED ELSEWHERE ACROSS THE CENTRAL
PACIFIC. BETWEEN 18N AND 25N EAST OF 145W...CLOUDS ARE PRIMARILY
OVERCAST STRATOCUMULUS AND STABLE CLOSED CELL CUMULUS ELEMENTS.
ELSEWHERE...CLOUDS ARE MORE SCATTERED TO BROKEN IN COVERAGE AND
TRANSITION TO MORE SHOWERY OPEN CELL CUMULUS ELEMENTS. ANOTHER AREA
OF BROKEN TO OVERCAST CLOUDS IS LOCATED FROM 17N TO 26N BETWEEN
152W AND 156W...AND FROM 24N TO 28N BETWEEN 145W AND 152W. ISOLATED
TOWERING CUMULUS WITH TOPS TO 20000 FT ARE EMBEDDED WITHIN THESE
AREAS...AND BRIEF CUMULONIMBUS CLOUDS WITH TOPS TO 30000 FT HAVE
ALSO FORMED.

GOING FROM ISLAND TO ISLAND...BROKEN LOW CLOUDS COVER INTERIOR AND
WESTERN SECTIONS OF KAUAI...AND ALSO SOUTHWESTERN SECTIONS OF
NIIHAU. BROKEN TO OVERCAST LOW CLOUDS COVER THE WESTERN HALF OF
OAHU...AS WELL AS WINDWARD SECTIONS OF THE KOOLAU RANGE. THESE
CLOUDS EXTEND 25 MILES OFFSHORE TO THE SOUTH SOUTHEAST. BROKEN LOW
CLOUDS COVER MUCH OF MOLOKAI AND LANAI...AND EXTEND UP TO 20 MILES
OFFSHORE. BROKEN TO OVERCAST LOW CLOUDS COVER THE WEST MAUI
MOUNTAINS AND LOWER SLOPES OF HALEAKALA...AND EXTEND ACROSS A GOOD
PORTION OF THE CENTRAL VALLEY AS WELL. LOW CLOUDS ALSO EXTEND 50
MILES OFFSHORE TO THE SOUTHWEST OF ULUPALAKUA...COVERING A PORTION
OF KAHOOLAWE.

ON THE BIG ISLAND...BROKEN TO OVERCAST LOW CLOUDS COVER THE BULK OF
THE ISLAND. CLOUDS ARE ONLY SCATTERED IN COVERAGE ACROSS IMMEDIATE
COASTAL SECTIONS OF THE WINDWARD COAST...AS WELL AS LEEWARD COASTAL
SECTIONS OF NORTH AND SOUTH KOHALA DISTRICTS. CLOUDS ALSO EXTEND UP
TO THE SUMMITS OF MAUNA KEA AND MAUNA LOA. LOW CLOUDS EXTEND
OFFSHORE 80 MILES TO THE SOUTHEAST. THESE CLOUDS ARE PART OF A BAND
THAT EXTENDS OVER 150 MILES OFFSHORE TO THE NORTHEAST ACROSS THE
WINDWARD COASTAL WATERS.

A 90 MPH UPPER LEVEL JET IS LOCATED SOUTHEAST OF THE STATE. BROKEN
TO OVERCAST CIRROCUMULUS AND CIRROSTRATUS CLOUDS ARE LOCATED SOUTH
OF A LINE FROM 23N140W TO 13N165W TO 18N180. THESE HIGH CLOUDS ARE
MOVING TO THE NORTHEAST AND EAST AT 70 MPH EAST OF 160W...AND TO THE
EAST AT 50 MPH WEST OF 160W.

$$

BRAVENDER

000
ATHW40 PHFO 181829
SIMHI

HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI
1830 UTC SAT MAY 18 2013

BASED ON DATA THROUGH 1800 UTC MAY 18 2013

WATER VAPOR IMAGERY SHOWS AN UPPER LEVEL LOW NEAR 23N154W...OR ABOUT
300 MILES EAST-NORTHEAST OF HONOLULU. THIS LOW IS MOVING TO THE EAST
AT 10 MPH. A SHARP UPPER LEVEL TROUGH IS LOCATED FARTHER
NORTHWEST...NEAR 29N159W...OR LESS THAN 600 MILES NORTH-NORTHWEST OF
HONOLULU. THIS TROUGH IS MOVING TO THE SOUTHEAST AT 25 MPH. ISOLATED
CUMULONIMBUS CLOUDS ARE LOCATED JUST EAST OF THE TROUGH...IN THE
AREA NORTH OF 29N BETWEEN 157W AND 159W. CLOUD TOPS EXTEND UP TO
38000 FT. IN ADDITION...BROKEN CIRRUS AND CIRROCUMULUS CLOUDS ARE
ASSOCIATED WITH THE LOW AND THE TROUGH...AND ARE LOCATED GENERALLY
NORTH OF 23N BETWEEN 143W AND 158W. THESE HIGH CLOUDS ARE MOVING TO
THE NORTH AND NORTHEAST AT 20 TO 30 MPH.

AREAS OF LOW CLOUDS ARE LOCATED ELSEWHERE ACROSS THE CENTRAL
PACIFIC. THESE CLOUDS ARE GREATEST IN COVERAGE EAST OF 145W. BETWEEN
17N AND 26N...CLOUDS ARE PRIMARILY OVERCAST STRATOCUMULUS AND STABLE
CLOSED CELL CUMULUS ELEMENTS. ELSEWHERE...CLOUDS ARE MORE BROKEN IN
COVERAGE AND TRANSITION TO MORE SHOWERY OPEN CELL CUMULUS ELEMENTS.
ISOLATED TOWERING CUMULUS WITH TOPS TO 20000 FT ARE EMBEDDED WITHIN
THE SHOWERY CUMULUS ELEMENTS...ESPECIALLY OFFSHORE IN THE LEE OF THE
BIG ISLAND. BRIEF CUMULONIMBUS CLOUDS WITH TOPS TO 30000 FT HAVE
ALSO FORMED IN THIS AREA.

GOING FROM ISLAND TO ISLAND...SCATTERED TO BROKEN LOW CLOUDS ARE
LOCATED OVER INTERIOR AND EASTERN SECTIONS OF KAUAI. BROKEN TO
OVERCAST LOW CLOUDS COVER THE INTERIOR OF OAHU...AND ARE GREATEST IN
COVERAGE ACROSS THE WINDWARD SLOPES OF THE KOOLAU RANGE. AN OVERCAST
AREA OF LOW CLOUDS ALSO EXTENDS 50 MILES OFFSHORE TO THE SOUTH AND
SOUTHEAST OF OAHU...COVERING THE KAIWI CHANNEL AND WESTERN MOLOKAI
WEST OF KAUNAKAKAI. BROKEN LOW CLOUDS ALSO COVER EASTERN MOLOKAI
EAST OF PUKOO. SCATTERED TO BROKEN LOW CLOUDS ARE LOCATED OVER THE
INTERIOR OF THE WEST MAUI MOUNTAINS. BROKEN TO OVERCAST LOW CLOUDS
COVER THE EASTERN SLOPES OF HALEAKALA FROM HUELO TO HANA TO KAUPO
BELOW 6000 FT. AN AREA OF LOW CLOUDS ALSO EXTENDS OFFSHORE TO THE
SOUTHEAST ACROSS THE ALENUIHAHA CHANNEL.

ON THE BIG ISLAND...BROKEN TO OVERCAST LOW CLOUDS COVER SOUTH
HILO...PUNA AND KAU DISTRICTS BELOW 9000 FT. THESE CLOUDS ARE PART
OF A LARGER AREA OF CLOUDS THAT EXTENDS OVER 100 MILES OFFSHORE TO
THE NORTHEAST AND EAST...AND 80 MILES OFFSHORE TO THE SOUTHEAST.
BROKEN LOW CLOUDS COVER PORTIONS OF NORTH AND SOUTH KONA DISTRICTS
FROM KAILUA-KONA SOUTHWARD. THESE CLOUDS EXTEND OVER 300 MILES
OFFSHORE TO THE EAST SOUTHEAST OF THE KONA COAST.

A 90 MPH UPPER LEVEL JET IS LOCATED SOUTHEAST OF THE STATE. BROKEN
TO OVERCAST CIRROCUMULUS AND CIRROSTRATUS CLOUDS ARE LOCATED SOUTH
OF 15N BETWEEN 150W AND 167W...AND WITHIN 300 MILES SOUTHEAST OF A
LINE FROM 15N150W TO 23N142W. THESE HIGH CLOUDS ARE MOVING TO THE
NORTHEAST AND EAST AT 70 MPH.

$$

BRAVENDER

000
ATHW40 PHFO 181230
SIMHI

HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI
1230 UTC SAT MAY 18 2013

BASED ON DATA THROUGH 1100 UTC MAY 18 2013

ANIMATION OF THE WATER VAPOR IMAGERY SHOWS AN UPPER LEVEL LOW
EXITING THE ISLAND OF OAHU TOWARD THE EAST AT 10 MPH. AN AREA OF
CIRRUS CLOUDS COVERED THE AREA BETWEEN 200 AND 560 MILES NORTHEAST
QUADRANT OF THIS LOW. THIN CIRRUS CLOUDS ARE ALSO NOTED APPROACHING
KAUAI FROM THE NORTHWEST...WHILE MUCH THICKER CIRRUS SHIELD IS
LOCATED BETWEEN 270 AND 550 MILES SOUTHEAST OF THE BIG ISLAND. THIS
STREAM OF CIRRUS...ABOUT 260 MILES WIDE...IS HEADING TOWARD THE
NORTHEAST...FROM ISOLATED STORMS ALONG THE INTERTROPICAL CONVERGENCE
ZONE LOCATED ALONG 05N.

ALSO ON INFRARED SATELLITE IMAGERY...IS A BAND OF LOW CLOUDS ABOUT
470 MILES NORTHWEST OF KAUAI. IT IS PART OF A WEAK BOUNDARY THAT IS
MOVING SOUTH AND SOUTHEAST AT 10 TO 15 MPH.

AS FOR THE ISLANDS...THE BROKEN AREA OF LOW CLOUDS CONTINUES
WESTWARD UNDER A WEAK TO MODERATE TRADE WIND FLOW. THE SMALLER
ISLANDS ARE MOSTLY IN THE CLEAR WITH BROKEN LOW CLOUDS PRESENT OVER
THE SURROUNDING WATERS OF OAHU MOLOKAI LANAI AND MAUI. THESE CLOUDS
CONTAIN ISOLATED SHOWERS. THE ISLAND OF HAWAII IS MOST AFFECTED WITH
BROKEN TO OVERCAST CLOUDS COVERING BOTH THE WINDWARD AND LEEWARD
ZONES. A HEAVY SHOWER POPPED UP ALONG THE LEEWARD KOHALA COAST IN
THE LAST HOUR...WHILE AN AREA OF SCATTERED SHOWERS THREATENS TO MOVE
ONTO THE KAU COAST AND THE AIRPORT AT KAILUA KONA.

THE LOW LEVEL WIND FLOW ACROSS THE MAIN ISLANDS AND SURROUNDING
WATERS...STILL SHOW A SLIGHT TINGE OF AN INVERTED NORTH TO SOUTH
ORIENTED TROUGH OVER THE WINDWARD WATERS OF MAUI.

THE ITCZ STRETCHED FROM 05N140W TO 07N167W TO 03N180E. SCATTERED
MODERATE THUNDERSTORMS ARE NOTED ALONG PART OF THIS ITCZ EAST OF
150W. DENSE...LAYERED CLOUDS WITH EMBEDDED THUNDERSTORMS EXTENDED
NORTHWARD TO 10N FOR THE REMAINING PORTION OF THE ITCZ.

$$
LAU

000
ATHW40 PHFO 180540
SIMHI

HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI
0530 UTC SAT MAY 18 2013

BASED ON DATA THROUGH 0500 UTC MAY 18 2013

ANIMATION OF THE WATER VAPOR IMAGERY SHOWS AN UPPER LEVEL LOW OVER
THE NORTHERN PORTION OF THE KAUAI CHANNEL AT 22N158W. IT IS DRIFTING
SOUTHEASTWARD TOWARDS OAHU. A FIELD OF HIGH LEVEL CIRRUS EXTENDED
NORTHEAST OF THE UPPER LOW FOR 400 MILES. MORE CIRRUS CLOUDS ARE
NOTED ON WATER VAPOR NORTHWEST OF THE ISLANDS.

ALSO ON WATER VAPOR IS A RIBBON OF DENSE CIRRUS IS PASSING SOUTH OF
THE BIG ISLAND. THE CIRRUS COMES FROM THUNDERSTORMS LOCATED ALONG
THE INTERTROPICAL CONVERGENCE ZONE /ITCZ/ LOCATED ALONG 05N
LATITUDE. THE RIBBON OF CIRRUS IS 350 WIDE...AND IS CAUGHT IN A
SOUTHWEST FLOW ALOFT.

INFRARED IMAGERY SHOWS THE EASTERN HALF OF THE ISLAND CHAIN BEING
BOTHERED BY A FIELD OF BROKEN LOW CLOUDS. THIS FIELD EXTENDED
NORTHWARD OF MAUI FOR 300 MILES...470 MILES TO THE WEST AND 600
MILES TO THE EAST OF THE BIG ISLAND. ANIMATION OF THE INFRARED
IMAGERY SHOWS A SLIGHT NORTH TO SOUTH ORIENTED TROUGH CENTERED OVER
MAUI COUNTY. THE LOW LEVEL WIND FLOW WEST OF OF THE TROUGH IS
FROM THE EAST NORTHEAST...AND FROM THE SOUTHEAST EAST OF THE TROUGH.
WIND SPEED IS 15 TO 20 MPH OVER THE WINDWARD WATERS.

ASIDE FOR LOCALLY BROKEN LOW CLOUDS STRADDLING THE MOUNTAINS...SKIES
WERE FAIR ACROSS KAUAI OAHU AND MOLOKAI AT SUNSET. SKIES OVER MAUI
WERE A LITTLE CLOUDIER ESPECIALLY OVER THE WEST MAUI MOUNTAINS AND
THE SLOPES SURROUNDING HALEAKALA. BY FAR BIG ISLAND IS THE
CLOUDIEST...COVERING BOTH WINDWARD AND LEEWARD. THE CLOUDS ON THE
KONA SIDE IS THE RESULT OF DAYTIME HEATING...LIGHT WIND...AMPLE
MOISTURE...AND AN SEMI UNSTABLE AIR MASS. SOME OF THESE CLOUDS
CONTAINED BRIEF HEAVY SHOWERS.

A CLUSTER OF DEEP CONVECTION IS NOTED IN THE TROPICS FAR SOUTHWEST
OF THE MAIN HAWAIIAN ISLANDS. THIS CLUSTER IS LOCATED ON THE NORTH
SIDE OF THE ITCZ BETWEEN 05N AND 10N FROM 160W TO 175W.

$$
LAU