000
ATHW40 PHFO 241200
SIMHI
HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI
1200 UTC FRI MAY 24 2013
BASED ON DATA THROUGH 1130 UTC MAY 24 2013
HIGH CLOUDS MOVING FROM THE WEST-SOUTHWEST HAVE BEEN GENERATING
OCCASIONAL CEILINGS OVER THE ISLES THIS EARLY MORNING.
LOW CLOUD CEILINGS...SOME WITH EMBEDDED SHOWERS...HAVE BEEN
FAVORING WINDWARD AND MAUKA SECTIONS ON THE INDIVIDUAL ISLES. THIS
HAS BEEN ESPECIALLY THE CASE OVER KAUAI...MAUI...AND THE BIG
ISLAND. THE ONE AREA WHERE BROKEN TO OVERCAST LOW CLOUDS AND
PRECIPITATION HAVE BEEN MOST PERSISTENT...HOWEVER...HAS BEEN IN
LEEWARD KOHALA ON THE BIG ISLAND...OVER KAWAIHAE AND IN ITS
VICINITY. LOW CLOUDINESS HAS BEEN SCATTERED ELSEWHERE AROUND THE
ALOHA STATE. LOW CLOUD MOVEMENT IS FROM THE EAST TO EAST-NORTHEAST
AT 10 TO 20 MPH ACROSS MOST OF THE STATE...WITH SPEEDS DECREASING
FROM EAST TO WEST. SPEEDS ARE NEAR 25 MPH IMMEDIATELY SOUTHEAST AND
SOUTH OF THE BIG ISLAND.
IN THE ADJACENT COASTAL WATERS...BROKEN LOW CLOUDS...A MIX OF
SHOWERY AND STABLE ELEMENTS...ARE WIDESPREAD NORTHEAST CLOCKWISE
THROUGH SOUTH OF THE BIG ISLAND. LOW CLOUDINESS IS ALSO PREVALENT
WEST CLOCKWISE THROUGH NORTHEAST OF KAUAI AS OF BULLETIN TIME.
DISCOUNTING HIGH CLOUDS...CONDITIONS ARE CLEAR TO SCATTERED
ELSEWHERE.
AN UPPER TROUGH...ABOVE 25 THOUSAND FEET...IS MORE THAN 500 MILES
WEST OF KAUAI AND APPEARS TO BE NEARLY STATIONARY...ACCORDING TO
THE MOST RECENT WATER VAPOR IMAGES. EMBEDDED WITHIN THE TROUGH ARE
LOWS NEAR 23N168.5W AND 13N177W. THE WINDS ON THE EAST SIDE OF THE
TROUGH AXIS ARE FROM THE SOUTHWEST AND WEST-SOUTHWEST...AND ARE
CARRYING THE HIGH CLOUDS OVER THE HAWAIIAN ISLANDS AS STATED IN THE
LEAD PARAGRAPH.
THE FRONT THAT HAD BEEN NEAR MIDWAY ATOLL LAST EVENING APPEARS TO BE
DISSIPATING. WINDS REMAIN FROM THE SOUTHWEST BETWEEN 15 AND 20
MPH...AND LOW CLOUDINESS HAS DECREASED IN THE AREA ACCORDING TO THE
LATEST SURFACE OBSERVATIONS FROM THE SITE. ON THE OTHER HAND...
SATELLITE IMAGERY INDICATES VARIOUS AMOUNTS OF MIDDLE AND HIGH
CLOUDS IN THE AREA.
FINALLY...CONVECTION HAS DECREASED IN INTENSITY OVER THE PAST
SEVERAL HOURS ALONG THE INTERTROPICAL CONVERGENCE ZONE FAR SOUTH OF
HAWAII. MOST OF THE SHOWERS AND THUNDERSTORMS THAT REMAIN ARE
CURRENTLY FIRING FROM 07N TO 11N EAST OF 147W...FROM 02N TO 05N
BETWEEN 153W AND 162W...AND FROM 04.5N TO 09N WEST OF 167W.
$$
KINEL
000
ATHW40 PHFO 240500
SIMHI
HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI
0500 UTC FRI MAY 24 2013
BASED ON DATA THROUGH 0430 UTC MAY 24 2013
LOW CLOUD CEILINGS ARE PREVALENT OVER COASTAL AND LOWER UPSLOPE
SECTIONS OF THE HILO...PUNA...KAU...AND KONA DISTRICTS ON THE BIG
ISLAND THIS EARLY EVENING. MORE BROKEN TO OVERCAST LOW CLOUDINESS
EXISTS IN THE SOUTHERN AND SOUTHWEST AREAS OF EAST MAUI. ELSEWHERE
SKIES ARE CLEAR TO PARTLY CLOUDY. LOW CLOUD MOTION IS FROM THE EAST
TO EAST-NORTHEAST AT 10 TO 20 MPH ACROSS THE ISLAND CHAIN...WITH
SPEEDS DECREASING FROM EAST TO WEST.
THE LEADING EDGE OF A NORTH-TO-SOUTH ORIENTED BAND OF BROKEN LOW
CLOUDS...A MIX OF STABLE AND SHOWERY ELEMENTS...IS ABOUT 50 MILES
EAST OF THE BIG ISLAND AS OF BULLETIN TIME...AND IS HEADING WEST TO
WEST-SOUTHWEST WITH THE PREVAILING TRADE FLOW. A SMALLER CLUSTER OF
SCATTERED TO BROKEN LOW CLOUDS IS IMMEDIATELY EAST OF MAUI...AND JUST
NORTH AND NORTHEAST OF THE BIG ISLAND. CONDITIONS ARE OTHERWISE
CLEAR TO SCATTERED OVER THE ADJACENT COASTAL WATERS.
LOW CLOUDS AND SHOWERS ASSOCIATED WITH A FRONT FAR NORTHWEST FROM
KAUAI ARE AFFECTING MIDWAY ATOLL. THE BOUNDARY IS CURRENTLY WEST OF
MIDWAY AS THE SURFACE WINDS AT THE SITE ARE FROM THE SOUTHWEST NEAR
20 MPH. THE FRONT APPEARS TO BE HEADING EAST BETWEEN 15 AND 20 MPH
ALONG 30N.
SHOWERS AND THUNDERSTORMS ARE FIRING ALONG THE INTERTROPICAL
CONVERGENCE ZONE FAR SOUTH OF HAWAII. THE MOST ACTIVE CELLS ARE
IGNITING FROM 06N TO 09N BETWEEN 141W AND 146W AS OF THIS WRITING.
MORE CONVECTION IS LOCATED FROM 05N TO 08N BETWEEN 163 AND 168W.
$$
KINEL
000
ATHW40 PHFO 240032
SIMHI
HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI
0030 UTC FRI MAY 24 2013
BASED ON DATA THROUGH 0000 UTC MAY 24 2013
TRADE WINDS ARE BUILDING OVER THE MAIN HAWAIIAN ISLANDS TODAY WHILE
SURFACE TROUGHING CONTINUES TO WEAKEN TO THE NORTH AND WEST.
MAINLY SCATTERED LOW CLOUDS NEAR THE ISLANDS ARE TRAVELLING FROM
THE EAST AT NEARLY 10 MPH OFF THE WINDWARD COAST OF KAUAI...
INCREASING TO AROUND 15 MPH NORTH OF MAUI COUNTY...AND
STRENGTHENING TO 20 MPH SOUTH OF THE BIG ISLAND. WINDS ARE
INCREASING AS SURFACE HIGH PRESSURE NORTHEAST OF THE AREA NEAR
37N144W EDGES CLOSER TO THE ISLANDS AND...MORE IMPORTANTLY...A
SURFACE TROUGH NORTH OF THE ISLANDS WEAKENS. THE WESTWARD DRIFTING
TROUGH RUNS FROM 29N157W TO ABOUT 200 MILES NORTH OF MAUI AT
24N156W AND IS MARKED BY AN AREA BROKEN LOW CLOUDS EXTENDING 200
MILES EAST OF THE TROUGH AXIS.
OVER THE ISLANDS...BROKEN LOW CLOUDS COVER WINDWARD SLOPES...WHILE
SEA BREEZES HAVE LED TO BROKEN LOW CLOUD DEVELOPMENT OVER LEEWARD
TERRAIN. CLOUD COVER REMAINS MORE EXTENSIVE OVER KAUAI...WHICH LIES
UNDER AN AREA OF BROKEN LOW CLOUDS EXTENDING FROM THE GARDEN ISLE
TO ABOUT 400 MILES TO THE WEST.
AN UPPER LEVEL TROUGH BISECTS THE REGION FROM NORTHEAST TO
SOUTHWEST. THE EASTWARD DRIFTING UPPER TROUGH AXIS RUNS FROM 30N156W
TO A WEAK EMBEDDED UPPER LOW AT 22N170W TO ANOTHER EMBEDDED UPPER
LOW AT 12N178W. THE UPPER TROUGH IS LIKELY MAINTAINING THE LOW CLOUD
FIELD OVER AND WEST OF KAUAI AND IS GENERATING SCATTERED TO BROKEN
HIGH CLOUDS FROM 24N TO 18N BETWEEN 170W AND 160W.
OVER THE WESTERN PORTION OF THE AREA...A WEAK COLD FRONT IS
IMPACTING MIDWAY ATOLL. THE FRONT IS PRODUCING BROKEN LOW CLOUDS
NORTH OF A LINE FROM 30N173W TO 27N180...WITH AN ISOLATED
THUNDERSTORM WITH TOPS TO 46000 FT JUST WEST OF MIDWAY NEAR 28N178W.
THE FRONT IS MOVING TO THE EAST AT 20 TO 25 MPH.
$$
DWROE
000
ATHW40 PHFO 231829
SIMHI
HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI
1830 UTC THU MAY 23 2013
BASED ON DATA THROUGH 1800 UTC MAY 23 2013
HIGH PRESSURE IS DRIVING A TRADE WIND FLOW OVER THE EASTERN PORTION
OF THE CENTRAL NORTH PACIFIC WHILE TROUGHING CONTINUES TO EXERT A
GREATER INFLUENCE OVER THE WESTERN AND CENTRAL PORTIONS. THE MAIN
HAWAIIAN ISLANDS LIE UNDER A TRANSITION BETWEEN THESE FEATURES...
WITH TRADES WINDS SLOWLY BUILDING OVER THE EASTERN END OF THE STATE.
WEAKENING SURFACE TROUGHS LINGERING NORTH OF THE MAIN HAWAIIAN
ISLANDS ARE HOLDING OFF THE REBUILDING TRADE FLOW. ONE TROUGH IS
DRIFTING WESTWARD ALONG 157W FROM JUST NORTH OF WEST MAUI TO 30N.
SCATTERED TO BROKEN CUMULUS CLOUDS EXTEND ABOUT 275 MILES EAST OF
THE TROUGH AXIS. ANOTHER...WEAKER SURFACE TROUGH SITS ABOUT 475
MILES NORTHWEST OF KAUAI FROM 29N162W TO 25N170W. THESE SURFACE
TROUGHS ARE SUPPORTED BY A NEARLY STATIONARY UPPER LEVEL TROUGH
OVERHEAD RUNNING ALONG 30N156W TO A WEAK EMBEDDED UPPER LOW AT
23N170W TO ANOTHER EMBEDDED UPPER LOW AT 14N178W.
OVER THE ISLANDS...OVERNIGHT LAND BREEZES DOMINATE FROM THE BIG
ISLAND TO OAHU DUE TO THE SLUGGISHNESS OF THE RETURNING TRADE WINDS.
MAINLY SCATTERED CUMULUS AROUND THESE ISLANDS ARE TRAVELLING FROM
THE EAST AT 10 MPH...INCREASING TO SLIGHTLY MORE THAN 15 MPH SOUTH
OF THE BIG ISLAND. AS A RESULT...PATCHES OF BROKEN LOW CLOUDS ARE
OBSERVED ALONG WINDWARD SLOPES WHILE LEEWARD AREAS ARE MOSTLY CLEAR.
TO THE EAST OF THE STATE...ESPECIALLY EAST OF 150W...A RATHER STABLE
TRADE WIND FLOW IS WELL ESTABLISHED. THE SURFACE HIGH DRIVING THE
TRADES IS CENTERED NORTH OF THE AREA NEAR 40N142W.
THE UPPER TROUGH TO THE WEST IS GENERATING A BROAD AREA OF BROKEN
MIDLEVEL CLOUDS OVER KAUAI AND WATERS TO THE WEST. AN EMBEDDED LINE
OF TOWERING CUMULUS CLOUDS WITH TOPS TO 19000 FT IS MOVING TO THE
NORTH NORTHWEST SLOWLY JUST SOUTH OF KAUAI AND NIIHAU.
OVER THE WESTERN PORTION OF THE AREA...A WEAK COLD FRONT IS
APPROACHING MIDWAY ATOLL FROM THE WEST. THE EXACT LOCATION AND
MOVEMENT OF THE FRONT IS DIFFICULT TO DETERMINE AS WATERS WITHIN 200
MILES NORTHWEST AND SOUTHEAST OF MIDWAY ARE OBSCURED BY BROKEN
LAYERED CLOUDS.
$$
DWROE
000
ATHW40 PHFO 231248
SIMHI
HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI
1230 UTC THU MAY 23 2013
BASED ON DATA THROUGH 1200 UTC MAY 23 2013
INFRARED SATELLITE IMAGERY AND ANIMATION SHOWS A CONTINUING SLUGGISH
LOW LEVEL WIND FLOW OVER THE WATERS NORTH AND NORTHWEST OF THE
HAWAIIAN ISLANDS THIS EARLY THURSDAY MORNING. HOWEVER...ANIMATION
ALSO POINTS OUT AN EASTERLY TRADE WIND FLOW JUST EAST OF MAUI AND
THE BIG ISLAND SLOWLY SPREADING WESTWARD.
SCATTERED LOW CLOUDS AND DRY CONDITION RULE THE ISLANDS AT 2 AM HST.
THERE ARE ONE OR TWO EXCEPTIONS...HOWEVER. THE FIRST BEING THE BIG
ISLAND WHERE SMALL AREAS OF LOW CLOUDS ARE NOTED OVER THE SOUTHERN
HALF OF THE ISLAND AND THE HILO AREA. SCATTERED SHOWERS ARE
AFFECTING THE PUNA THE KAU DISTRICTS AND THEIR ADJACENT WATERS. ON
THE KONA SIDE...A COUPLE OF SHOWERS IS DETECTED ALONG THE KONA COAST
FROM CAPTAIN COOK TO KAILUA KONA TOWN. ISOLATED SHOWERS ARE NOTED
OVER THE COASTAL WATERS WITHIN 45 MILES OF ALL THE ISLANDS. THE
SECOND EXCEPTION IS AN APPARENT SOUTHEAST WIND FLOW OVER THE KAUAI
END HAS CARRIED A MODERATE SIZE PATCH OF CLOUDS AND SHOWERS JUST TO
THE SOUTH OF NIIHAU.
ELSEWHERE...A MUCH LARGER AREA OF LOW CLOUDS LIES WITHIN 700 MILES
TO THE WEST OF KAUAI. LOW CLOUD COVERAGE IS SCATTERED TO THE NORTH
OF THE ISLANDS CHAIN TO 30N LATITUDE... AND WITHIN 250 MILES TO THE
EAST OF CAPE KUMUKAHI. EAST OF 151W IS AN EXPANSIVE AREA OF STABLE
LOW CLOUDS STRETCHING TO BAJA CALIFORNIA.
WATER VAPOR IMAGERY SHOWS AN UPPER LEVEL LOW 780 MILES WEST OF
KAUAI AT 24N172W. THE LOW HAS BEEN MOVING SOUTHEAST A 20 MPH.
ANOTHER UPPER LEVEL LOW IS NOTED AT 12N180E OR 13N178E. THIS LOW IS
MOVING SOUTH SOUTHEAST AT 20 MPH. OTHERWISE A WEST SOUTHWESTERLY
WIND FLOW DOMINATED THE SKIES ABOVE THE HAWAIIAN ISLANDS.
SCATTERED CONVECTION HAS DEVELOPED IN THE TROPICS SOUTH OF THE
HAWAIIAN ISLANDS...WITHIN 70 MILES EITHER SIDE OF A LINE FROM
07N140W TO 03N154W TO 04N168W.
$$
LAU
000
ATHW40 PHFO 231242
SIMHI
HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI
1230 UTC THU MAY 23 2013
BASED ON DATA THROUGH 1200 UTC MAY 23 2013
INFRARED SATELLITE IMAGERY AND ANIMATION SHOWS A CONTINUING SLUGGISH
LOW LEVEL WIND FLOW OVER THE WATERS NORTH AND WEST OF THE HAWAIIAN
ISLANDS THIS EARLY THURSDAY MORNING. HOWEVER...ANIMATION ALSO POINTS
OUT AN EASTERLY TRADE WIND FLOW JUST EAST OF MAUI AND THE BIG ISLAND
SLOWLY SPREADING WESTWARD.
SCATTERED LOW CLOUDS AND DRY CONDITION RULE THE ISLANDS AT 2 AM HST.
THERE ARE ONE OR TWO EXCEPTIONS...HOWEVER. THE FIRST BEING THE BIG
ISLAND WHERE SMALL AREAS OF LOW CLOUDS ARE NOTED OVER THE SOUTHERN
HALF OF THE ISLAND AND THE HILO AREA. SCATTERED SHOWERS ARE
AFFECTING THE PUNA THE KAU DISTRICTS AND THEIR ADJACENT WATERS. ON
THE KONA SIDE...A COUPLE OF SHOWERS IS DETECTED ALONG THE KONA COAST
FROM CAPTAIN COOK TO KAILUA KONA TOWN. ISOLATED SHOWERS ARE NOTED
OVER THE COASTAL WATERS WITHIN 45 MILES OF ALL THE ISLANDS. THE
SECOND EXCEPTION IS AN APPARENT SOUTHEAST WIND FLOW OVER THE KAUAI
END HAS CARRIED A MODERATE SIZE PATCH OF CLOUDS AND SHOWERS JUST TO
THE SOUTH OF NIIHAU.
ELSEWHERE...A MUCH LARGER AREA OF LOW CLOUDS LIES WITHIN 700 MILES
TO THE WEST OF KAUAI. LOW CLOUD COVERAGE IS SCATTERED TO THE NORTH
OF THE ISLANDS CHAIN TO 30N LATITUDE... AND WITHIN 250 MILES TO THE
EAST OF CAPE KUMUKAHI. EAST OF 151W IS AN EXPANSIVE AREA OF STABLE
LOW CLOUDS STRETCHING TO BAJA CALIFORNIA.
WATER VAPOR IMAGERY SHOWS AN UPPER LEVEL LOW 780 MILES WEST OF
KAUAI AT 24N172W. THE LOW HAS BEEN MOVING SOUTHEAST A 20 MPH.
ANOTHER UPPER LEVEL LOW IS NOTED AT 12N180E OR 13N178E. THIS LOW IS
MOVING SOUTH SOUTHEAST AT 20 MPH. OTHERWISE A WEST SOUTHWESTERLY
WIND FLOW DOMINATED THE SKIES ABOVE THE HAWAIIAN ISLANDS.
SCATTERED CONVECTION HAS DEVELOPED IN THE TROPICS SOUTH OF THE
HAWAIIAN ISLANDS...WITHIN 70 MILES EITHER SIDE OF A LINE FROM07N140W
TO 03N154W TO 04N168.
$$
LAU
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