Satellite Interpretation Message
Issued by NWS

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000
ATHW40 PHFO 210031
SIMHI

HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI
0030 UTC SUN DEC 21 2014

BASED ON DATA THROUGH 0000 UTC DECEMBER 21 2014

A NORTH NORTHEAST TO SOUTH SOUTHWEST UPPER LEVEL TROUGH TO THE
NORTHWEST OF THE MAIN HAWAIIAN ISLANDS CONTINUES TO MOVE TOWARDS THE
ISLANDS THIS AFTERNOON. THE BASE OF THE TROUGH IS NEAR LISIANSKI
ATOLL...AND IS ABOUT 900 MILES NORTHWEST OF KAUAI AT 2 PM. THIS
UPPER LEVEL SYSTEM IS ASSOCIATED WITH AN APPROACHING SURFACE FRONT.
THE LEADING EDGE OF THE LAYERED CLOUD BAND ASSOCIATED WITH THE FRONT
LIES ALONG A LINE FROM 16N177E TO 23N171W TO 35N154W...AND
CONTINUES TO THE NORTH AND NORTHEAST. THE SOUTHERN END OF THE BAND
IS MOSTLY COMPRISED OF LOW CLOUDS...BUT NORTH OF 24N...THE BAND IS
COMPRISED OF LAYERED CLOUDS. THE LOW CLOUD BAND AT THE SOUTHERN END
IS ABOUT 200 MILES WIDE...WHILE THE LAYERED CLOUD BAND IS CLOSER TO
400 MILES WIDE.

LOW CLOUDS HAVE INCREASED OVER THE MAIN HAWAIIAN ISLANDS SINCE DAY
BREAK. THIS AFTERNOON FINDS CLOUDS COVERING MOST OF KAUAI AND
NIIHAU...WITH JUST A FEW CLOUDS OVER THE WATERS SURROUNDING KAUAI
COUNTY. ON OAHU...CLOUDS HAVE INCREASED OVER THE KOOLAU RANGE...AND
FORMED OVER THE WAIANAE RANGE...COVERING BOTH AT 2 PM. THE LOW
CLOUDS OVER EASTERN MOLOKAI THIS MORNING INCREASED IN COVERAGE OVER
THE LAST SEVERAL HOURS...AND NOW COVER THE EASTERN THIRD OF THE
ISLAND...WHILE ADDITIONAL CLOUDS HAVE FORMED OVER THE WESTERN END OF
THE ISLAND. CLOUDS HAVE FORMED OVER THE SOUTHERN HALF OF
LANAI...WHILE SCATTERED CLOUDS REMAIN OVER THE SOUTHERN COAST OF
KAHOOLAWE. ON MAUI...CLOUDS FORMED OVER THE WEST MAUI
MOUNTAINS...AND OVER THE WEST FACING SLOPES OF HALEAKALA.
MEANWHILE...THE CLOUDS OVER THE EAST FACING SLOPES OF HALEAKALA HAVE
THINNED...LEAVING SCATTERED CLOUDS OVER THE SLOPES FROM NAHIKU TO
HANA TO KIPAHULU.

ON THE BIG ISLAND...THE CLOUDS OVER THE SOUTH HILO AND PUNA
DISTRICTS THINNED SIGNIFICANTLY OVER THE LAST SEVERAL
HOURS...LEAVING FEW CLOUDS OVER THE SOUTH HILO DISTRICT...AND
SCATTERED CLOUDS OVER THE PUNA DISTRICT. MEANWHILE...CLOUDS HAVE
INCREASED OVER THE KAU...SOUTH KONA...NORTH KONA...SOUTH
KOHALA...AND NORTH KOHALA DISTRICTS. SOME OF THESE CLOUDS ARE
SPILLING OVER INTO THE HAMAKUA DISTRICT.

$$

MBALLARD




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