Satellite Interpretation Message
Issued by NWS

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000
ATHW40 PHFO 051831
SIMHI

HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI
1830 UTC MON DEC 05 2016

BASED ON DATA THROUGH 1800 UTC DECEMBER 05 2016

A DEEP TROUGH AT THE SURFACE AND ALOFT DOMINATES OVER THE CENTRAL
PORTION OF THE AREA...INCLUDING THE MAIN HAWAIIAN ISLANDS. A
SHORTWAVE UPPER LEVEL TROUGH AXIS CURRENTLY LOCATED BETWEEN KAUAI
AND OAHU AND IS LIFTING NORTHEASTWARD AT 25 TO 30 MPH...WHILE A
BROADER LONGWAVE UPPER LEVEL TROUGH COVERS THE AREA FROM THE
ISLANDS TO JUST WEST OF THE DATELINE.

THE SHORTWAVE UPPER TROUGH IS GENERATING A 400 TO 500 MILE WIDE
SHIELD OF BROKEN TO OVERCAST LAYERED CLOUDS WITH ISOLATED EMBEDDED
THUNDERSTORMS OVER THE EASTERN HALF OF THE ISLAND CHAIN AND
ACROSS WATERS TO THE NORTHEAST BEYOND 30N. THE MOST ACTIVE
PORTION OF THIS CLOUD SHIELD IS MOVING NORTHEAST WITH THE
SHORTWAVE TROUGH. THIS FEATURE HAS ALSO TAPPED DEEP TROPICAL
MOISTURE...BRINGING A LARGE AREA OF SCATTERED TO BROKEN LAYERED
CLOUDS BETWEEN 10N AND THE BIG ISLAND. A LINE OF LOW LEVEL
CONVERGENCE IS PRODUCING SCATTERED THUNDERSTORMS TO THE EAST AND
SOUTHEAST OF THE BIG ISLAND WITHIN 125 MILES OF A LINE FROM
19N152W...15N151W...AND 10N146W.

ACROSS THE MAIN HAWAIIAN ISLANDS...INFRARED IMAGERY SHOWS AN AREA
OF ACTIVE EMBEDDED SHOWERS POISED TO MOVE NORTHEAST OF THE BIG
ISLAND AND MAUI. AS A RESULT...BROKEN TO OVERCAST LAYERED CLOUDS
DOMINATE OVER THESE ISLANDS...WITH OVERCAST LOW CLOUDS NOTED OVER
MOLOKAI. THE FIRST VISIBLE IMAGES OF THE DAY REVEAL SCATTERED
CUMULUS CLOUDS OVER WATERS AROUND KAUAI AND OAHU. RATHER SLOW LOW
CLOUD MOTIONS SUGGEST A SURFACE TROUGH NEAR AND NORTH OF OAHU.

ACROSS THE REST OF THE REGION...A TRADE WIND FLOW DOMINATES...WITH
THE EXCEPTION OF A WEAK SURFACE TROUGH SITTING OVER MIDWAY ATOLL.

$$

EFFECTIVE WEDNESDAY...DECEMBER 14 2016...THE NWS WILL DISCONTINUE
THIS PRODUCT. FOR QUESTIONS...PLEASE CONTACT TOM EVANS AT
808-973-5273. THE OFFICIAL CHANGE NOTICE CAN BE FOUND AT...ALL
LOWER CASE...HTTP://WWW.NWS.NOAA.GOV/OM/NOTIF.HTML



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