Satellite Interpretation Message
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000
ATHW40 PHFO 241232
SIMHI

HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI
1230 UTC TUE MAY 24 2016

BASED ON DATA THROUGH 1200 UTC MAY 24 2016

REGIONAL SATELLITE IMAGERY CENTERED OVER THE MAIN HAWAIIAN ISLANDS
SHOWS VARYING AMOUNTS OF SHOWERY AND STABLE LOW CLOUDS MOVING
WESTWARD WHILE INCREASING...BUT STILL RELATIVELY THIN....HIGH CLOUDS
ARE STREAMING TOWARD THE EAST-NORTHEAST NEAR THE BIG ISLAND. LOW
CLOUDS AND SHOWERS ASSOCIATED WITH A WEAK TRADE WIND DISTURBANCE
THAT WAS NORTHEAST OF OAHU EARLIER IN THE NIGHT HAVE DIMINISHED
SOMEWHAT...AND ARE NOW LOCATED OVER NEAR SHORE WATERS BETWEEN KAUAI
AND OAHU...MARKED BY A RELATIVELY SMALL CLUMP OF COOLER CLOUD TOPS
IN THE KAUAI CHANNEL.

ASIDE FROM THE AFOREMENTIONED SMALL CLOUD CLUMP IN THE KAUAI
CHANNEL...LOW CLOUDS ARE PRIMARILY SCATTERED IN COVERAGE OVER
WINDWARD WATERS FROM KAUAI TO MAUI...WITH BROKEN TO OVERCAST LOW
CLOUDS OVER WINDWARD BIG ISLAND WATERS. LEEWARD AREAS OF MOST
ISLANDS ARE UNDER FEW CLOUDS...BUT AN AREA OF BROKEN TO OVERCAST LOW
CLOUDS IS OVER THE LOWER SLOPES AND COASTAL AREAS OF SOUTH KONA. LOW
CLOUDS NEAR THE ISLANDS ARE MOVING TOWARD THE WEST AND WEST-
NORTHWEST...AT SPEEDS BETWEEN 15 AND 20 MPH. LOOKING UPSTREAM TO THE
EAST OF THE ISLANDS...THE BROKEN TO OVERCAST LOW CLOUDS OVER NEAR
SHORE BIG ISLAND WINDWARD WATERS EXTEND ABOUT 50 MILES TO THE
EAST...WITH SCATTERED TO LOCALLY BROKEN LOW CLOUDS SEEN FURTHER TO
THE EAST. EAST OF THE OTHER ISLANDS THE LOW CLOUD FIELD REMAINS
SPARSELY POPULATED UNTIL ABOUT 200 MILES OUT...AFTER WHICH SHOWERY
LOW CLOUDS INCREASE IN COVERAGE TO BROKEN TO OVERCAST.

ELSEWHERE ACROSS THE TROPICAL CENTRAL NORTH PACIFIC FROM 10N TO 30N
BETWEEN 140W AND THE DATE LINE...HIGH CLOUDS OF VARYING COVERAGE ARE
NOTED FROM 10N TO 19N BETWEEN 140W AND 170W...AND ARE ALL HEADED
TOWARD THE EAST AND EAST-NORTHEAST. A FEW CLUSTERS OF THUNDERSTORMS
ARE NOTED FAR SOUTHWEST OF THE ISLANDS...NEAR 10N BETWEEN 163W AND
174W...BUT THESE LACK ANY SIGNIFICANT ORGANIZATION. ADDITIONALLY...
BROKEN TO OVERCAST HIGH CLOUDS ARE SEEN TO THE NORTHWEST OF THE
ISLANDS...NORTH OF 25N BETWEEN 160W AND 165W.

WATER VAPOR IMAGERY HIGHLIGHTS THE FEATURE ALOFT RESPONSIBLE FOR THE
HIGH CLOUDS TO THE NORTHWEST...WITH THE AXIS OF A TROUGH ALOFT
OBSERVED TO BE ALONG A LINE THROUGH 30N 165W TO 20N170W. THIS TROUGH
CONTINUES TO MOVE SOUTHEAST AT SPEEDS NEAR 30 MPH...WITH THE TROUGH
AXIS CURRENTLY ABOUT 500 MILES NORTHWEST OF KAUAI.

$$

BIRCHARD


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