Satellite Interpretation Message
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000
ATHW40 PHFO 240544
SIMHI

HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI
0530 UTC TUE MAY 24 2016

BASED ON DATA THROUGH 0500 UTC MAY 24 2016

A MODERATE TO LOCALLY STRONG TRADE WIND FLOW PREVAILS OVER THE MAIN
HAWAIIAN ISLANDS THIS EVENING...DELIVERING PATCHES OF LOW CLOUDS TO
WINDWARD SLOPES AND COASTS. CLOUD TOPS WITHIN THE INCOMING MOISTURE
FIELD ARE A LITTLE HIGHER OVER WATERS EAST AND NORTHEAST OF OAHU...
WHERE A WEAK TRADE WIND DISTURBANCE IS LEADING TO LOCALIZED CLOUD
TOPS AS COOL AS 0 DEGREES CELSIUS...OR ABOUT 15 THOUSAND FEET.
AFTERNOON CLOUDS AND SHOWERS THAT DEVELOPED OVER THE LEEWARD SLOPES
OF MAUI AND THE BIG ISLAND HAVE EASED ON MAUI...BUT SIMILARLY-COOL
CLOUD TOPS OVER THE LOWER KONA SLOPES ARE PRODUCING MODERATE TO
LOCALLY HEAVY SHOWERS BASED ON LATEST RADAR DATA.

ASIDE FROM THE SHOWERY CLOUD CLUSTER OVER OAHU WINDWARD WATERS AND
THE CLOUDS AND SHOWERS OVER THE KONA SIDE OF THE BIG ISLAND...THE
TRADE WIND FLOW CONTAINS FEW TO SCATTERED LOW CLOUDS...WITH STABLE
AND SHOWERY CLOUDS RANDOMLY DISTRIBUTED. THE LEADING EDGE OF A 150-
MILE WIDE AREA OF INCREASED LOW CLOUDINESS IS ABOUT 50 MILES EAST OF
THE BIG ISLAND. CURRENTLY...WINDWARD SLOPES OF THE ISLANDS ARE UNDER
PRIMARILY BROKEN LOW CLOUDS...WHILE LEEWARD SLOPES AND COASTS OF
KAUAI...OAHU AND MOLOKAI ONLY HAVE FEW TO SCATTERED LOW CLOUDS.
LEEWARD AREAS OF MAUI AND THE BIG ISLAND ARE UNDER BROKEN TO
OVERCAST LOW CLOUDS...ALTHOUGH CLOUD TOPS OVER LEEWARD MAUI ARE
WARMER/LOWER THAN THOSE SEEN OVER LEEWARD BIG ISLAND... AND RAINFALL
NEAR ULUPALAKUA HAS DIMINISHED FROM EARLIER THIS AFTERNOON/EVENING.
LOW CLOUD MOTION NEAR THE ISLANDS WAS SOMEWHAT AFFECTED BY THE WEAK
TRADE WIND DISTURBANCE PASSING NEAR OAHU...WITH LOW LEVEL FLOW A
LITTLE MORE NORTHEASTERLY JUST WEST OF THE DISTURBANCE AND A LITTLE
MORE SOUTHEASTERLY JUST EAST OF THE DISTURBANCE. GENERALLY
SPEAKING...THE LOW-LEVEL FLOW IS FROM THE EAST...WITH LOW CLOUDS
MOVING AT SPEEDS BETWEEN 20 AND 25 MPH.

WATER VAPOR IMAGERY SHOWS A ZONAL...EAST TO WEST...FLOW ALOFT OVER
THE ISLANDS...BUT THE LEADING EDGE OF A TROUGH ALOFT IS LOCATED
ABOUT 550 MILES NORTHWEST OF KAUAI...MOVING SOUTHEAST AT ABOUT 30
MPH. BROKEN TO LOCALLY OVERCAST HIGH-LEVEL CLOUDS ASSOCIATED WITH
THE TROUGH ARE LOCATED NORTH OF 25N BETWEEN 163W AND 174W.

$$

BIRCHARD


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