Satellite Interpretation Message
Issued by NWS

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000
ATHW40 PHFO 201825
SIMHI

HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI
1830 UTC SAT DEC 20 2014

BASED ON DATA THROUGH 1800 UTC DECEMBER 20 2014

WATER VAPOR IMAGERY SHOWS AN DIGGING NORTH NORTHEAST TO SOUTH
SOUTHWEST UPPER LEVEL TROUGH TO THE NORTHWEST OF THE MAIN HAWAIIAN
ISLANDS THIS MORNING. THE BASE OF THIS UPPER LEVEL TROUGH IS ABOUT
1080 MILES NORTHWEST OF KAUAI...NEAR MIDWAY. THIS TROUGH IS
ASSOCIATED WITH A FRONTAL SYSTEM APPROACHING THE ISLANDS. THE
LEADING EDGE OF THE LAYERED CLOUD BAND THAT IS ASSOCIATED WITH THE
COLD FRONT EXTENDS TO THE NORTHEAST FROM 20N 180 TO 40N 152W. THE
BAND IS ABOUT 275 MILES WIDE.

EARLY VISIBLE IMAGERY SHOWS JUST A COUPLE CLOUDS OVER THE EASTERN
THIRD OF KAUAI AND PASSING OVER NIIHAU. ON OAHU...SCATTERED CLOUDS
ARE FOUND OVER THE KOOLAU RANGE. MOLOKAI HAS CLOUDS OVER THE EASTERN
THIRD OF THE ISLAND...WHILE LANAI IS CLOUD FREE AT DAYBREAK. MAUI
HAS A LINE OF CLOUDS OVER THE EASTERN END OF THE ISLAND OVER THE
SLOPES FROM NAHIKU TO HANA TO KAUPO. SCATTERED TO BROKEN LOW CLOUDS
ARE FOUND ALONG THE SOUTHERN COAST OF KAHOOLAWE. ON THE BIG
ISLAND...LOW CLOUDS COVER THE SOUTH HILO AND PUNA DISTRICTS. SOME OF
THESE CLOUDS ARE SPILLING OVER INTO THE NORTH HILO AND KAU
DISTRICTS. THE CLOUDS OVER THE BIG ISLAND EXTEND ABOUT 60 MILES TO
THE NORTHEAST OF THE ISLAND.

CONVECTION IN THE INTERTROPICAL CONVERGENCE ZONE FAR SOUTH OF
HAWAII IS CONCENTRATED ALONG A LINE FROM 6N 148W TO 6N 158W WITH
TOPS REACHING NEAR 56000 FEET. ADDITIONAL THUNDERSTORMS ARE FOUND
NEAR 6N 143W WITH TOPS TO 50000 FEET...AND NEAR 7N 172W WITH TOPS TO
54000 FEET.

$$





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