Satellite Interpretation Message
Issued by NWS

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000
ATHW40 PHFO 041230
SIMHI

HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI
1230 UTC MON MAY 04 2015

BASED ON DATA THROUGH 1200 UTC MAY 04 2015

THE LARGEST FEATURE IN THE CENTRAL NORTH PACIFIC CONTINUES TO BE A
BROAD ANTICYCLONIC CIRCULATION CENTERED NEAR 33N148W. 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 VERY LITTLE OVER THE PAST 12 HOURS.

A 300 TO 400 MILE WIDE BAND OF OVERCAST LAYERED CLOUDS LIES WEST OF
A LINE FROM 50N155W TO 43N149W TO 35N154W. THIS FEATURE CHANGES TO A
RAGGED 300 MILE WIDE BAND OF BROKEN LAYERED CLOUDS WEST OF A LINE
FROM 35N154W TO 30N168W TO 25N180W. MARKING A FRONTAL
BOUNDARY...THESE CLOUD BANDS ALSO MARK THE WESTERN FLANK OF THE
SUBTROPICAL HIGH NOTED ABOVE.

THERE HAS BEEN LITTLE CHANGE IN CLOUD COVER DISTRIBUTION ACROSS THE
ISLANDS SINCE LAST EVENING. LARGE PATCHES OF BROKEN TO OVERCAST LOW
CLOUDS EMBEDDED WITHIN EASTERLY TRADE FLOW ARE GLIDING ACROSS LOCAL
HAWAIIAN WATERS THIS MORNING. ONE OF THESE PATCHES CONTINUES TO LIE
ACROSS THE EASTERN HALF OF THE BIG ISLAND AND EXTENDS NORTHWARD
ACROSS MAUI COUNTY AND OAHU WINDWARD WATERS. BROKEN TO OVERCAST LOW
CLOUDS COVER ALL WINDWARD AND SOUTHEAST-FACING SHORES AND SLOPES ON
THE BIG ISLAND. A CHANGE FROM LAST EVENING IS THE CLEARER SKIES
ACROSS KONA SLOPES. 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 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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