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Hawaiian Islands Satellite Interpetation Message
664
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
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
Send comments to: Ryan Lyman
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