Satellite Interpretation Message
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000
ATHW40 PHFO 010025
SIMHI

HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI
0030 UTC WED OCT 01 2014

BASED ON DATA THROUGH 0000 UTC OCTOBER 01 2014

AFTERNOON SKIES HAVE BECOME BROKEN TO OVERCAST OVER MOST AREAS OF
THE STATE. IN ADDITION TO THE EXPECTED INCREASE IN LOW CLOUD COVER
OVER THE SLOPES...ISOLATED THUNDERSTORMS HAVE DEVELOPED OVER SOUTH
KAUAI...WINDWARD AND CENTRAL OAHU...AND CENTRAL LANAI. THE
THUNDERSTORMS HAVE BEEN FORMING WITHIN AN UNSTABLE AIRMASS GENERATED
BY A LOW PRESSURE SYSTEM IN THE MIDDLE AND UPPER LEVELS OF THE
ATMOSPHERE. WATER VAPOR IMAGES SHOWED THE LOW TO BE CENTERED ABOUT
250 MILES NORTHEAST OF HILO MOVING TOWARD THE NORTHEAST AT ABOUT 10
MILES PER HOUR. APART FROM THE CELLS OVER THE ISLANDS...
THUNDERSTORMS BEING TRIGGERED BY THE LOW HAVE DECREASED IN COVERAGE
WITH THE ONLY REMAINING CELLS OVER THE OPEN OCEAN CONFINED
TO A SMALL AREA ABOUT 100 MILES NORTH OF OAHU. SOUTH OF THE LOW
CENTER...FRAGMENTS OF THIN HIGH CLOUDS...CIRRUS...HAVE BEEN MOVING
OVER THE BIG ISLAND FROM THE SOUTHWEST. OVER THE COASTAL
WATERS...LOW CLOUDS HAVE BEEN MAINLY SCATTERED IN COVERAGE AND
MOVING NORTHWESTWARD AT 10 TO 15 MILES PER HOUR.

NORTHWEST OF THE MAIN HAWAIIAN ISLANDS...A COLD FRONT CLOUD BAND
CONTINUED TO MOVE SOUTHEASTWARD AT ABOUT 10 MILES PER HOUR. THE
LEADING EDGE OF THE BAND WAS ALONG A LINE FROM 30N 159W TO 25N 165W
WITH ISOLATED THUNDERSTORMS EXTENDING 150 MILES NORTHWESTWARD. THE
BAND WAS BETWEEN FRENCH FRIGATE SHOALS AND GARDNER PINNACLES IN THE
PAPAHANAUMOKUAKEA MARINE NATIONAL MONUMENT. BEYOND THE BAND OF
THUNDERSTORMS...BANDS OF LAYERED CLOUDS EXTENDED NORTH OF 30N.

FAR TO THE SOUTH...THUNDERSTORM ACTIVITY IN THE INTERTROPICAL
CONVERGENCE ZONE...ITCZ...WAS MAINLY SOUTH OF 10N WITH THE EXCEPTION
OF A NORTHWARD BULGE UP TO 12N 147W.

$$

KODAMA





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