Satellite Interpretation Message
Issued by NWS

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000
ATHW40 PHFO 300533
SIMHI

HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI
0530 UTC SAT JUL 30 2016

BASED ON DATA THROUGH 0500 UTC JULY 30 2016

THE LAST VISIBLE SATELLITE IMAGES OF THE EVENING DEPICT LARGE
AREAS OF BROKEN STRATOCUMULUS /SC/ AND SHOWERY CUMULUS /CU/
EMBEDDED IN MODERATE TRADE WIND FLOW OVER AND AROUND THE MAIN
HAWAIIAN ISLANDS. THESE CLOUDS ARE MOST ABUNDANT OVER AND AROUND
KAUAI AND OAHU...WITH LESS COVERAGE OVER AND AROUND MAUI AND THE
BIG ISLAND. THESE AREAS OF SC AND CU ARE MOVING TO THE WEST-
SOUTHWEST NEAR 20 MPH...AND ESTIMATED CLOUD TOPS RANGE FROM 6 TO
10 THOUSAND FEET.

OVER KAUAI...AREAS OF LOW CLOUDS COVER BOTH WINDWARD AND LEEWARD
AREAS...WITH SOME CLEAR PATCHES OVER SOUTHERN SECTIONS. OVER
OAHU...LOW CLOUDS ARE ABUNDANT OVER MUCH OF THE ISLAND...WITH
THE EXCEPTION OF THE EWA PLAIN WHERE MOSTLY CLEAR SKIES PREVAIL.
LOW CLOUDS COVER WINDWARD SECTIONS OF MOLOKAI AND MAUI. CLEAR
SKIES PREVAIL OVER LEEWARD MOLOKAI...WHILE AREAS OF LOW CLOUDS
ARE PRESENT OVER THE LEEWARD SLOPES OF HALEAKALA ON MAUI. A SMALL
PATCH OF LOW CLOUDS IS PRESENT OVER THE HIGHER ELEVATIONS OF
LANAI...WITH MOSTLY CLEAR SKIES OVER THE REMAINDER OF THAT ISLAND.
OVER THE BIG ISLAND...SCATTERED TO LOCALLY BROKEN LOW CLOUDS ARE
PRESENT OVER THE HAMAKUA COAST...HILO AND PUNA DISTRICTS...WHILE
OVERCAST CONDITIONS PREVAIL OVER THE KAU COAST...SOUTH POINT
AREA...KONA COAST AND THE SADDLE AREA. MOSTLY CLEAR SKIES PREVAIL
OVER THE UPPER ELEVATIONS OF THE SUMMITS AND PARTS OF THE SOUTH
KOHALA DISTRICT.

WATER VAPOR IMAGERY SHOWS AN UPPER LEVEL LOW CENTERED ABOUT 550
MILES TO THE NORTHEAST OF HILO. THE UPPER LOW HAS BEEN MOVING
SLOWLY TOWARD THE NORTHWEST OVER THE PAST SEVERAL HOURS. CLOUDS
ASSOCIATED WITH THE UPPER LOW REMAIN VERY LIMITED WITH JUST A FEW
MID AND HIGH LEVEL CLOUDS SEEN ROTATING AROUND ITS CENTER.

SCATTERED THUNDERSTORMS ALONG THE INTERTROPICAL CONVERGENCE ZONE
/ITCZ/ EXTEND ALONG AN AXIS FROM 12N 165W TO 12N 180. ESTIMATED
HIGHEST CLOUD TOPS IN THIS AREA EXTEND UP TO 50 THOUSAND FEET. A
LARGE AREA OF CIRRUS AND CIRROSTRATUS EMANATING FROM THIS
CONVECTION COVERS THE WATERS SOUTH OF 22N BETWEEN 160W AND 180.
FARTHER TO THE EAST...ONLY ISOLATED THUNDERSTORMS ARE PRESENT
ALONG THE ITCZ FROM NEAR 10N 140W TO 12N 165W.

AN AREA OF LAYERED CLOUDINESS TO THE NORTH AND WEST OF A LINE
FROM 30N 173W TO 25N 180 IS ASSOCIATED WITH A WEAK UPPER LEVEL
TROUGH. EARLIER CONVECTION IN THIS AREA HAS WEAKENED DURING THE
PAST SEVERAL HOURS.

ELSEWHERE ACROSS THE CENTRAL NORTH PACIFIC...BROKEN TO OVERCAST SC
COVERS THE WATERS N OF 22N BETWEEN 140W AND 165W. THESE CLOUDS ARE
MOVING TO THE WEST WITHIN MODERATE TRADE WIND FLOW...WITH HIGHEST
ESTIMATED TOPS AROUND 10 THOUSAND FEET.

$$

JACOBSON



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