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Hawaiian Islands Satellite Interpetation Message

896
ATHW40 PHFO 041832
SIMHI

HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI
1830 UTC TUE AUG 04 2015

BASED ON DATA THROUGH 1800 UTC AUGUST 04 2015

AT 1800 UTC...TROPICAL STORM GUILLERMO IS CENTERED ABOUT 420 MILES
EAST OF HILO...HAWAII AND MOVING TOWARD THE NORTHWEST AROUND 12 MPH.
THUNDERSTORMS WITH TOPS AROUND 50000 FT ARE CONCENTRATED WITHIN 250
MILES IN THE NORTHEAST QUADRANT WITH ISOLATED THUNDERSTORMS
ELSEWHERE WITHIN 75 MILES OF THE CENTER. A BROAD UPPER LEVEL TROUGH
NORTH OF THE ISLANDS IS TAPPING THE HIGHER LEVEL MOISTURE FROM
GUILLERMO AND IS PRODUCING A 300 MILE-WIDE SWATH OF BROKEN HIGH
CLOUDS OFF TO THE NORTHEAST.

THE LEADING EDGE OF ENHANCED MOISTURE ON WESTERN PERIPHERY OF
GUILLERMO IS LOCATED ABOUT 75 MILES EAST OF THE BIG ISLAND AND
TRAVELLING TO THE WEST NEAR 15 MPH. ISOLATED TOWERING CUMULUS CELLS
WITH TOPS TO 30000 FT ARE EMBEDDED IN THE LEADING EDGE OF THE CLOUD
FIELD THAT IS OTHERWISE DOMINATED BY BROKEN CUMULUS CLOUDS. THIS
CLOUD FIELD RUNS OFF TO THE NORTHWEST WHERE IT MERGES WITH A BROADER
CLOUD FIELD LOCATED NORTH OF THE ISLANDS. A WEAK LOW LEVEL CLOUD
SWIRL EMBEDDED WITHIN THIS FIELD IS LOCATED ABOUT 100 MILES NORTH OF
KAUAI AND IS MOVING TOWARD THE WEST-SOUTHWEST NEAR 20 MPH.

OVER THE ISLANDS...AREAS OF BROKEN CUMULUS CLOUDS WITH TOPS MAINLY
AROUND 10000 FT ARE OBSERVED ALONG WINDWARD SLOPES AND THE ADJACENT
WATERS. THE EXCEPTION IS OAHU...WHERE THERE IS CURRENTLY FEWER LOW
CLOUDS ALONG WITH A THIN SHIELD OF BROKEN MID LEVEL CLOUDS.

THE REMNANT CIRCULATION FROM FORMER TROPICAL DEPRESSION EIGHT-E IS
ABOUT 1000 MILES SOUTHWEST OF HONOLULU AND CONTINUES TO PUSH WEST
NEAR 20 MPH. THUNDERSTORMS HAVE BEEN FLARING NEAR THE CENTER AND
WITHIN 375 MILES TO THE NORTHWEST.

THUNDERSTORM ACTIVITY WITHIN THE ITCZ IS LARGELY CONFINED SOUTH OF
10N.

$$

DWROE



Bulletins, Forecasts and Observations are courtesy of Honolulu National Weather Service Forecast Office



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It was last modified on: Tue, Sep 21 2010 - 2314 UTC
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