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782
ATHW40 PHFO 180500
SIMHI

HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI
0500 UTC FRI APR 18 2014

BASED ON DATA THROUGH 0430 UTC APRIL 18 2014

HIGH CLOUDS STREAKING FROM THE SOUTH AND SOUTHWEST HAVE BEEN MOVING
OVER THE ISLES AND ADJACENT WATERS FROM MOLOKAI TO THE BIG ISLAND
THIS EARLY EVENING.  MOST OF THE CLOUDINESS IS DEBRIS FROM
CONVECTION THAT HAS BEEN OCCURRING IN THE DEEP TROPICS.

BELOW THE CIRRUS CLOUDS...LOW CEILINGS ARE CONCENTRATED OVER
WINDWARD AND MAUKA SECTIONS ON THE INDIVIDUAL ISLES.  SOME OF THE
BROKEN CLOUDINESS HAS BEEN MAKING ITS WAY OVER LEEWARD AREAS OF THE
SMALLER ISLANDS AND WEST MAUI AS WELL.  BROKEN TO OVERCAST LOW
CLOUDS HAVE ALSO BEEN EVIDENT OVER THE WEST-FACING SLOPES OF
HALEAKALA IN EAST MAUI...AND COASTAL AND UPSLOPE PARTS OF KONA AND
SOUTH KOHALA ON THE BIG ISLAND.  LOW CLOUD MOVEMENT IS FROM THE EAST
TO EAST-NORTHEAST AT 15 TO 20 MPH ACROSS MOST OF THE ALOHA STATE...
THOUGH SPEEDS ARE 20 TO 25 MPH EAST CLOCKWISE THROUGH SOUTH OF THE
BIG ISLAND AS OF BULLETIN TIME.

IN THE ADJACENT COASTAL WATERS...LOW CLOUDS...A MIX OF STABLE AND
SHOWERY ELEMENTS...ARE PREDOMINANTLY SCATTERED...WITH SMALL PATCHES
OF BROKEN LOW CLOUDS RANDOMLY DISTRIBUTED OVER THE AREA.  ON THE
OTHER HAND...A NORTH-NORTHEAST TO SOUTH-SOUTHWEST ORIENTED BAND OF
BROKEN SHOWERY LOW CLOUDS IS APPROACHING THE BIG ISLAND FROM THE
EAST.

IN THE UPPER AIR ABOVE 25 THOUSAND FEET...THE AXIS OF A NORTH-
NORTHEAST-TO-SOUTH-SOUTHWEST ORIENTED TROUGH IS ROUGHLY ALONG A LINE
FROM 23N156W TO JUST WEST OF OAHU TO 13N167W...AND HAS BEEN DRIFTING
WEST.  THE WINDS ON THE EAST SIDE OF THE FEATURE ARE FROM THE SOUTH
AND SOUTHWEST...AND IT/S THESE WINDS THAT HAVE BEEN CARRYING THE
HIGH CLOUDS TOWARD THE NORTH AND NORTHEAST OVER THE ISLANDS.

THE LEADING EDGE OF BROKEN TO OVERCAST LOW CLOUDS WITH A FRONT IS
ABOUT 720 MILES NORTHWEST OF KAUAI AT THE MOMENT...AND HAS BEEN
PUSHING EAST NEAR 20 MPH ALONG 30N.  LOW CLOUDS TO THE WEST OF THE
LEADING EDGE ARE OVERCAST AT THE MIDWAY ATOLL OBSERVATION SITE...AND
WINDS ARE FROM THE NORTHEAST NEAR 10 MPH.

ALONG THE INTERTROPICAL CONVERGENCE ZONE FAR SOUTH OF HAWAII...
SHOWERS AND THUNDERSTORMS HAVE BEEN FIRING FROM 03N TO 06N EAST OF
142W...AND SOUTH OF 04N WEST OF 170W.

$$

KINEL





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