Satellite Interpretation Message
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000
ATHW40 PHFO 291831
SIMHI

HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI
1830 UTC THU SEP 29 2016

BASED ON DATA THROUGH 1800 UTC SEPTEMBER 29 2016

WATER VAPOR IMAGERY INDICATES A GENERAL WEST TO EAST FLOW ALOFT
WITH UPPER LEVEL TROUGHS TO THE WEST AND EAST OF THE MAIN
HAWAIIAN ISLANDS. THE TROUGH TO THE WEST IS PRODUCING ISOLATED
CUMULONIMBUS CLOUDS WEST OF 170W. THESE THUNDERSTORMS ARE RISING
TO HEIGHTS OF 40 THOUSAND FEET WHILE REMAINING NEARLY STATIONARY.
ELSEWHERE IN THE TROUGH SCATTERED CUMULUS AND SCATTERED TO BROKEN
CIRRUS CLOUDS ARE NORTH OF A LINE FROM 14N 180W TO THE HAWAIIAN
ARCHIPELAGO. THE TROUGH TO THE EAST HAS TAPPED INTO MOISTURE
ASSOCIATED WITH TROPICAL STORM ULIKA RESULTING IN AN AREA OF
LAYERED CLOUDS WITH EMBEDDED TOWERING CUMULI EXTENDING OUTWARD
ABOUT 175 MILES FROM 19N 142W.

AT 1800 UTC...TROPICAL STORM ULIKA WAS CENTERED ABOUT 1050 MILES
EAST-SOUTHEAST OF HILO...HAWAII CENTERED NEAR 17N 140W.
CUMULONIMBUS CLOUDS TO ITS NORTHEAST WERE RISING TO HEIGHTS
AROUND 49 THOUSAND FEET.

SOUTH AND EAST OF TROPICAL STORM ULIKA IS THE INTER-TROPICAL
CONVERGENCE ZONE...ITCZ. THE GREATEST ACTIVITY IS ALONG A NORTH-
NORTHEAST TO SOUTH-SOUTHWEST ORIENTED BREAK IN THE ITCZ WITHIN 350
MILES OF A LINE FROM 15N 156W TO 5N 162W. THE NUMEROUS
CUMULONIMBUS CLOUDS WERE RISING TO HEIGHTS OVER 57 THOUSAND FEET.
INDIVIDUAL CELLS ARE MOVING SLOWLY TO THE WEST.

IN THE LOWER TO MID LEVELS STRATOCUMULUS AND CUMULUS CLOUDS A
STREWN ACROSS THE CENTRAL PACIFIC WITH THE DENSEST AREA TO THE
NORTH THROUGH SOUTHEAST OF THE MAIN HAWAIIAN ISLANDS. THESE CLOUDS
ARE RISING TO HEIGHT BETWEEN 7 AND 11 THOUSAND FEET AND MOVING TO
THE WEST 15 TO 25 MPH.

IN THE VICINITY OF THE MAIN HAWAIIAN ISLANDS...SCATTERED TO BROKEN
CUMULUS AND STRATOCUMULUS CLOUDS ARE MOVING TO THE WEST AT 25
MILES PER HOUR AND RISING TO HEIGHTS BETWEEN 7 AND 11 THOUSAND
FEET. OVER NIIHAU IT IS PARTLY CLOUDY. KAUAI IS MOSTLY CLOUDY.
OAHU IS MOSTLY CLOUD WINDWARD AND PARTLY CLOUDY ELSEWHERE.
MOLOKAI IS MOSTLY CLOUDY OVER THE EASTERN PORTION WHILE THE
REMAINDER OF THE ISLAND IS PARTLY CLOUDY. LANAI AND KAHOOLAWE ARE
PARTLY CLOUDY. MAUI AND THE BIG ISLAND ARE MOSTLY CLOUDY OVER THE
EASTERN SLOPES WHILE IT IS PARTLY CLOUDY ELSEWHERE.

$$

EVANS



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