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Hawaiian Islands Satellite Interpetation Message
735
ATHW40 PHFO 191833
SIMHI
HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI
1830 UTC SUN MAY 19 2013
BASED ON DATA THROUGH 1800 UTC MAY 19 2013
WATER VAPOR IMAGERY SHOWED AN UPPER LEVEL LOW CENTERED ABOUT 600
MILES NORTH OF HONOLULU AT MID MORNING. THE LOW WAS MOVING SLOWLY
SOUTH AT LESS THAN 10 MILES AN HOUR. ISOLATED THUNDERSTORMS WERE
FORMING JUST EAST OF THE LOW IN THE AREA FROM 24N TO 31N BETWEEN
151W AND 154W. HIGHEST STORM TOPS WERE UP NEAR 38000 FEET.
SOUTH OF THE UPPER LOW...UPPER LEVEL WINDS WERE FLOWING TOWARD THE
EAST SOUTHEAST OVER THE HAWAIIAN ISLANDS. THE UPPER LOW WAS
ENHANCING ANY LOW CLOUDS THAT FORMED OVER AND AROUND THE
ISLANDS...ALLOWING ACCOMPANYING SHOWERS TO BE A SLIGHTLY HEAVY AT
TIMES.
A WEAK SURFACE LOW NEAR 28.5N 156W HAD FORMED BENEATH THE UPPER
LOW. IT WAS MOVING SLOWLY SOUTH AS WELL. AN ASSOCIATED FRONT
EXTENDED DOWN ALONG THE EAST AND SOUTH SIDE OF THE SURFACE LOW. THE
FRONT STRETCHED FROM 30N 152W TO 26N 154W TO 24N 160W TO 23N 167W.
THE THUNDERSTORMS WERE FORMING ALONG THE NORTH PART OF THIS FRONT.
BROKEN TO OVERCAST LOW CLOUDS WERE COMMON ALONG THE FRONT...WITHIN A
120 MILES WIDE BAND...FROM 26N 154W SOUTHWESTWARD. THE LOW CLOUDS
WITHIN THE FRONTAL BAND WERE JUST BRUSHING THE NORTH COAST OF KAUAI
AT 8 AM.
ALSO AT 8 AM...A LARGE CLUSTER OF MOSTLY OVERCAST LOW CLOUDS HUGGED
THE SOUTHEAST COAST OF THE BIG ISLAND. THIS CLUSTER WAS ABOUT 300
MILES LONG FROM NORTHEAST TO SOUTHWEST AND 100 MILES WIDE. THE
SOUTHEAST SIDE OF THE BIG ISLAND WAS MOSTLY CLOUDY AS WAS THE NORTH
SIDE OF KAUAI. BUT OAHU...MAUI COUNTY AND THE REST OF KAUAI AND THE
BIG ISLAND WERE MOSTLY SUNNY THIS MORNING.
TOPS OF THE LOW CLOUDS NEAR THE BIG ISLAND WERE UP TO 15000 TO 17000
FEET. THERE APPEARED TO BE A WEAK SURFACE TROUGH NEAR MAUI. THE
LOW CLOUDS FROM MOLOKAI TO KAUAI WERE MOVING TOWARD THE SOUTH AND
SOUTHWEST. THOSE CLOUDS FROM EAST MAUI TO THE BIG ISLAND WERE
FLOWING TOWARD THE NORTH AND NORTHWEST.
$$
Bulletins, Forecasts and Observations are courtesy of Honolulu National Weather Service Forecast Office
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This page is maintained voluntarily by the MKWC and the UHMET faculty, staff, and students.
It was last modified on: Tue, Sep 21 2010 - 2314 UTC
Send comments to: Ryan Lyman
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