Satellite Interpretation Message
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000
ATHW40 PHFO 261230
SIMHI

HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI
1230 UTC SUN APR 26 2015

BASED ON DATA THROUGH 1200 UTC APRIL 26 2015

OVERCAST LAYERED CLOUDS COVER THE CENTRAL NORTH PACIFIC WITHIN AN
AREA BOUNDED BY 41N144W 28N153W 33N160W 40N157W 41N144W. A DEEP LOW
NEAR 31N158W LIES ALONG THE SOUTHERN EDGE OF THESE LAYERED CLOUDS
AND APPEARS TO BE MOVING TOWARD THE NORTHEAST AT ABOUT 15 MPH. A
RAGGED 180 MILE WIDE BAND OF BROKEN TO OVERCAST LOW CLOUDS EXTENDS
SOUTH FROM THE LAYERED CLOUDS...MAINLY WEST OF A LINE FROM 28N153W
TO 24N155W TO 19N160W TO 17N164W. MARKING A FRONTAL BOUNDARY MOVING
EASTWARD SLOWLY...THE LEADING EDGE OF THESE LOW CLOUDS LIES ACROSS
THE KAUAI CHANNEL WITHIN THE MAIN HAWAIIAN ISLAND CHAIN. THE WESTERN
PORTION OF THE FRONTAL CLOUD BAND COVERS KAUAI.

A BROAD ANTICYCLONIC CIRCULATION GOVERNS LOW CLOUD MOTION EAST OF
THE LAYERED CLOUDS AND FRONTAL CLOUD BAND. CENTERED NEAR
30N135W...THIS CIRCULATION...ACTUALLY A SUBTROPICAL HIGH...HAS NOT
MOVED MUCH OVER THE PAST FEW DAYS. SINCE THIS FEATURE IS FAR
NORTHEAST OF THE MAIN HAWAIIAN ISLANDS...LOW LEVEL FLOW IS FROM THE
SOUTHEAST ACROSS THE ISLANDS EAST OF THE FRONTAL BOUNDARY. LOW LEVEL
FLOW IS FROM THE SOUTHWEST TO WEST ALONG AND BEHIND THE FRONTAL
BOUNDARY.

EAST OF THE FRONTAL CLOUD BAND...LOW CLOUD COVER HAS DECREASED
DRAMATICALLY OVERNIGHT...ESPECIALLY ACROSS MAUI AND THE BIG ISLAND.
MAUI IS CLEAR AND THE BIG ISLAND HAS BROKEN LOW CLOUDS ONLY ALONG
THE KAU AND SOUTHEAST PUNA SHORELINES. THE REST OF THE BIG ISLAND
HAS SCATTERED LOW CLOUDS TO CLEAR SKIES. LANAI AND MOLOKAI ALSO
APPEAR TO HAVE SCATTERED LOW CLOUDS TO CLEAR SKIES. OAHU HAS
SCATTERED LOW CLOUDS...BUT THIS WILL CHANGE SOON AS THE FRONTAL
CLOUD BAND ACROSS THE KAUAI CHANNEL ARRIVES.

$$
POWELL






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