Satellite Interpretation Message
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000
ATHW40 PHFO 301200
SIMHI

HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI
1200 UTC THU JUL 30 2015

BASED ON DATA THROUGH 1130 UTC JULY 30 2015

THIS EARLY MORNING...BROKEN TO OCCASIONALLY OVERCAST LOW
CLOUDS...SOME WITH EMBEDDED SHOWERS...ARE MAINLY AFFECTING WINDWARD
AND MAUKA SECTIONS OF THE SMALLER ISLES AND MAUI...AT LEAST FROM
TIME TO TIME.  ON THE BIG ISLAND...LOW CEILINGS EXIST IN WINDWARD
AREAS...AND OVER UPSLOPE AND COASTAL PORTIONS OF KONA AND LEEWARD
KOHALA.  SKIES ARE PREDOMINANTLY CLEAR TO PARTLY CLOUDY OTHERWISE.
LOW CLOUD MOTION IS FROM THE EAST AT 20 TO 25 MPH ACROSS THE ISLAND
CHAIN.

TO THE NORTHEAST AND EAST OF MAUI AND THE BIG ISLAND ARE PATCHY
AREAS OF SCATTERED TO BROKEN LOW CLOUDINESS MOVING ALONG WITH THE
PREVAILING TRADE FLOW.  PLUMES ARE CAUSING SMALL CLUSTERS OF BROKEN
LOW CLOUDS WEST OF THE BIG ISLAND...SOUTHWEST OF MAUI COUNTY...AND
WEST OF KAUAI AND NIIHAU.  ELSEWHERE CONDITIONS ARE NO WORSE THAN
SCATTERED OVER THE ADJACENT COASTAL WATERS.

AN UPPER LOW AND ITS ASSOCIATED TROUGH ARE MORE THAN 1000 MILES
NORTHWEST OF KAUAI AND APPEAR TO BE NEARLY STATIONARY.  THE SYSTEM
HAS RECENTLY BEEN GENERATING ISOLATED THUNDERSTORMS WITHIN 75 MILES
EITHER SIDE OF A LINE FROM 29N169.5W TO 24N176W...AND WITHIN 90
MILES OF POINT 26.5N167W.

A NORTH-TO-SOUTH ORIENTED SURFACE TROUGH IS WEST AND SOUTHWEST OF
THE ISLANDS AND CONTINUES TO MOVE AWAY TO THE WEST.  MOST OF THE
CONVECTION WITH THE FEATURE IS CURRENTLY LOCATED FROM 08N TO 21.5N
BETWEEN 163W AND 168W.  SOME OF THE CELLS FROM 08N TO 13N BETWEEN
164W AND 167W HAVE BEEN RISING TO OVER 50 THOUSAND FEET.  LOOKING
BACK TO THE EAST...A WEAK SURFACE LOW IS ABOUT 700 MILES SOUTH-
SOUTHEAST OF THE BIG ISLAND AND HAS BEEN HEADING WEST AT 10 TO 15
MPH.  SPOTTY CONVECTION HAS BEEN OCCURRING ON THE WESTERN AND
NORTHERN PERIPHERY OF THE SYSTEM.  A MORE SUBSTANTIAL AREA OF
SHOWERS AND THUNDERSTORMS IS EVIDENT TO THE SOUTHEAST CLOCKWISE
THROUGH SOUTHWEST OF THE LOW.  MOST OF THIS CONVECTION IS WITHIN 80
MILES EITHER SIDE OF A LINE FROM 08.5N146W TO 03N154W TO 01.5N162W.

$$

KINEL




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