Satellite Interpretation Message
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000
ATHW40 PHFO 280539
SIMHI

HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI
0530 UTC TUE JUL 28 2015

BASED ON DATA THROUGH 0500 UTC JULY 28 2015

SUFFICIENT LIGHT TRADES...AMPLE LOW LEVEL MOISTURE...AND LOTS OF
SUNSHINE...RESULTED IN SPOTTY...ISOLATED AFTERNOON SHOWERS OVER
MOST OF THE SMALLER ISLANDS. THESE CONDITIONS ALSO LEAD TO SCATTERED
SHOWERS...A FEW BRIEFLY HEAVY...OVER ON THE KONA SIDE OF THE BIG
ISLAND THIS AFTERNOON.

AT SUNSET...THE SHOWERS HAVE LEFT THE ISLANDS OF KAUAI...OAHU...
MOLOKAI...AND ALL THESE ISLANDS ARE NOW UNDER FAIR SKIES. MAUI IS
PARTLY CLOUDY THIS HOUR WITH ISOLATED SHOWERS...WHILE LANAI IS
MOSTLY CLOUDY. MOST OF THE BIG ISLAND IS UNDER CLOUDY SKIES WITH
DIMINISHING SHOWERS OVER ON WAIKOLOA AREA. THE ADJACENT WATERS OF
ALL BUT THE WINDWARD MAUI AND MOLOKAI ARE CLEAR. SCATTERED LOW
CLOUDS ARE PRESENT EAST OF THE ISLANDS FOR 300 MILES.

THE PREVAILING WIND DIRECTION IS FROM THE EAST. THE WIND SPEED
DIFFERS FROM 15 TO 20 MPH OVER THE EXPOSED WATERS OFF EASTERN BIG
ISLAND AND THE ISLAND/S WINDWARD WATERS...TO 10 TO 15 MPH OVER THE
LEEWARD WATERS OF THE SMALLER ISLANDS.

ELSEWHERE ON SATELLITE IMAGERY...THREE LOW LEVEL TROUGHS ARE NOTED.
THE FIRST IS LOCATED 935 MILES EAST NORTHEAST OF THE BIG ISLAND AT
23N141W. IT HAS JUST CROSSED OVER FROM 140W EARLIER THIS AFTERNOON,

WATER VAPOR IMAGERY SHOWS AN UPPER LOW 910 MILES WEST OF KAUAI NEAR
25N174W. IT IS MOVING SOUTHEASTWARD AT ABOUT 10 MPH. THIS LOW IS
CONNECTED TO A COMPLEX AREA OF TROUGHS NORTH OF THE ISLANDS BETWEEN
175W AND 150W. WIDELY SCATTERED THUNDERSTORMS ARE DETECTED BETWEEN
30N AND 26N FROM 160W TO 175W WITH TOPS AROUND 41000 FEET. A
WESTERLY WIND FLOW LIES HIGH ABOVE THE ISLAND SKIES. A BAND OF THIN
CIRRUS CLOUDS EMBEDDED IN THIS FLOW HAS DESCENDED ON BOTH KAUAI AND
OAHU IN LAST COUPLE OF HOURS.

IN THE TROPICS...A LARGE CLUSTER OF MODERATE TO STRONG THUNDERSTORMS
IS LOCATED FAR SOUTHEAST OF THE BIG ISLAND BETWEEN 12N AND 08N EAST
OF 145W. THE TOPS OF THE THUNDERSTORMS ARE AROUND 55000 FEET.
AN AREA OF WIDELY SCATTERED MODERATE THUNDERSTORMS IS LOCATED
BETWEEN 160 AND 600 MILES SOUTH OF THE BIG ISLAND OR BETWEEN 16N AND
10N. THESE STORMS HAD TOPS AROUND 50000 FEET.

$$

LAU





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