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683
ATHW40 PHFO 211823
SIMHI

HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI
1830 UTC THU AUG 21 2014

BASED ON DATA THROUGH 1800 UTC AUGUST 21 2014

WATER VAPOR IMAGERY SHOWS AN UPPER LEVEL LOW NEAR 17N180...OR NEARLY
700 MILES SOUTH-SOUTHWEST OF MIDWAY ATOLL. BROKEN CIRRUS AND
CIRROCUMULUS CLOUDS ARE LOCATED SOUTH OF THIS LOW...GENERALLY SOUTH
OF 17N WEST OF 176W. AN AREA OF SHOWERY CUMULUS CLOUDS IS ALSO
LOCATED THROUGH THIS AREA...WITH EMBEDDED TOWERING CUMULUS ELEMENTS.
CLOUD TOPS EXTEND UP TO 15000 FT.

FARTHER NORTH...A COLD FRONT IS LOCATED NORTH OF THE AREA. ISOLATED
CUMULONIMBUS CLOUDS ARE LOCATED ALONG THIS FRONT...AND ARE NEAR 30N
BETWEEN 177W AND 180. CLOUD TOPS EXTEND UP TO 40000 FT. A TROUGH IS
LOCATED NEAR 30N155W...OR ABOUT 500 MILES NORTH-NORTHEAST OF
HONOLULU...THAT EXTENDS FROM A LOW WELL NORTH OF THE AREA. THIS
TROUGH IS MOVING TO THE EAST AT 10 TO 15 MPH.

ISOLATED CUMULONIMBUS CLOUDS ARE LOCATED SOUTH OF THE STATE...IN THE
BROAD AREA SOUTH OF A LINE FROM 10N165W TO 14N159W TO 14N145W TO
13N140W. THESE CLOUDS ARE FOCUSED NEAR LOW PRESSURE CENTERS NEAR
11N162W...WHICH IS MOVING WEST SLOWLY...AND NEAR 13N147W...WHICH IS
NEARLY STATIONARY. CLOUD TOPS EXTEND UP TO 48000 FT NEAR THE EASTERN
LOW...AND UP TO 38000 FT NEAR THE WESTERN LOW.

ACROSS THE MAIN HAWAIIAN ISLANDS...BROKEN LOW CLOUDS COVER THE
EASTERN HALF OF KAUAI. BROKEN TO OVERCAST LOW CLOUDS COVER THE
WINDWARD SLOPES OF THE KOOLAU RANGE ON OAHU...AND EXTEND OFFSHORE
FROM KANEOHE EASTWARD. BROKEN TO OVERCAST LOW CLOUDS COVER MOST OF
MAUI COUNTY...AND EXTEND OVER 150 MILES OFFSHORE TO THE NORTHEAST
AND EAST.

ON THE BIG ISLAND...BROKEN TO OVERCAST LOW CLOUDS COVER THE WINDWARD
SLOPES OF THE KOHALA RANGE...WITH SCATTERED TO BROKEN LOW CLOUDS
ACROSS HAMAKUA DISTRICT BELOW 7000 FT. BROKEN TO OVERCAST LOW CLOUDS
COVER MUCH OF NORTH AND SOUTH HILO AND PUNA DISTRICTS BELOW 7000 FT.
THESE CLOUDS EXTEND 50 MILES OFFSHORE TO THE NORTHEAST OF THE
WINDWARD COAST...AND OFFSHORE TO THE SOUTHEAST OF PUNA DISTRICT.
AREAS OF BROKEN LOW CLOUDS ALSO COVER KAU DISTRICT BELOW 7000 FT.

$$

BRAVENDER






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