Satellite Interpretation Message
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000
ATHW40 PHFO 040536
SIMHI

HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI
0530 UTC MON MAY 04 2015

BASED ON DATA THROUGH 0500 UTC MAY 04 2015

THE LARGEST FEATURE IN THE CENTRAL NORTH PACIFIC APPEARS TO BE A
BROAD ANTICYCLONIC CIRCULATION CENTERED NEAR 35N145W. EAST TO WEST
LOW LEVEL FLOW IS NOTED SOUTH OF 30N EAST OF 165W...INCLUDING ACROSS
LOCAL HAWAIIAN WATERS. WEST TO EAST FLOW IS NOTED NORTH OF 35N EAST
OF 155W. THE CIRCULATION CENTER...ACTUALLY A SUBTROPICAL HIGH...HAS
MOVED EASTWARD SLOWLY OVER THE PAST 12 HOURS.

A 300 TO 400 MILE WIDE BAND OF OVERCAST LAYERED CLOUDS LIES WEST OF
A LINE FROM 50N156W TO 43N153W TO 35N156W. THIS FEATURE CHANGES TO A
RAGGED 300 MILE WIDE BAND OF BROKEN LAYERED CLOUDS WEST OF A LINE
FROM 35N156W TO 30N168W TO 26N180W. MARKING A FRONTAL
BOUNDARY...THESE CLOUD BANDS ALSO MARK THE WESTERN FLANK OF THE
SUBTROPICAL HIGH NOTED ABOVE.

LARGE PATCHES OF BROKEN TO OVERCAST LOW CLOUDS EMBEDDED WITHIN
EASTERLY TRADE FLOW ARE GLIDING ACROSS LOCAL HAWAIIAN WATERS THIS
EVENING. ONE OF THESE PATCHES LIES ACROSS THE EASTERN HALF OF THE
BIG ISLAND AND EXTENDS NORTHWARD ACROSS MAUI WINDWARD WATERS.
OVERCAST LOW CLOUDS COVER ALL WINDWARD AND SOUTHEAST-FACING SHORES
AND SLOPES ON THE BIG ISLAND...AS WELL AS KONA SLOPES NORTHWARD TO
KAILUA-KONA. ALMOST ALL OF MAUI HAS BROKEN TO OVERCAST LOW CLOUDS.
IN CONTRAST...LANAI IS MOSTLY CLEAR. SCATTERED TO PATCHY BROKEN LOW
CLOUDS COVER MOLOKAI. OAHU HAS BROKEN LOW CLOUDS ACROSS WINDWARD
SLOPES OF THE KOOLAU AND WAIANAE MOUNTAINS. SCATTERED TO PATCHY
BROKEN LOW CLOUDS COVER WINDWARD AND MAUKA SECTIONS OF KAUAI.
SATELLITE LOOP SHOWS LOW CLOUDS MOVING WESTWARD ACROSS LOCAL WATERS
IN THE 20 TO 25 MPH RANGE...HIGHEST IN THE CHANNELS.

$$

POWELL









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