Satellite Interpretation Message
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000
ATHW40 PHFO 231820
SIMHI

HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI
1830 UTC WED APR 23 2014

BASED ON DATA THROUGH 1800 UTC APRIL 23 2014

WATER VAPOR IMAGERY INDICATES WEAK UPPER LEVEL LOW PRESSURE
CONTINUES OVER THE MAIN HAWAIIAN ISLANDS WITH A TROUGH EXTENDING TO
THE WEST ALONG 21N. AN UPPER LEVEL HIGH PRESSURE RIDGE RESIDES EAST
OF THE ISLANDS WITH AN AXIS ALONG 140W. SCATTERED TO BROKEN CIRRUS
CLOUDS TO THE EAST OF A CURVE FROM 10N159W TO 18N152W TO
25N161W TO 30N158W ARE MOVING FROM THE LOW INTO THE RIDGE. THESE
HIGH LEVEL CLOUDS ARE MOVING TO THE NORTHEAST BETWEEN 20 AND 40
MILES PER HOUR AND RISING TO HEIGHTS AROUND 38000 FEET.

AT THE MID TO LOWER LEVELS...SCATTERED TO BROKEN STRATOCUMULUS
CLOUDS ARE SPREAD ACROSS THE AREA. THESE CLOUDS ARE RISING TO
HEIGHTS BETWEEN 9000 AND 12000 FEET AND MOVING TO THE WEST AROUND 15
MILES PER HOUR. THERE ARE TWO AREAS OF THE STRATOCUMULI WHICH ARE
MORE DENSE. THE FIRST IS WITHIN THE AREA BOUNDED BY LISIANSKI ISLAND
TO 27N167W TO GARDNER PINNACLES TO 22N175W TO LISIANSKI ISLAND. THE
OTHER AREA IS NORTH AND EAST OF THE ISLANDS AND PARTLY OBSCURED BY
THE CIRRUS CLOUDS. THE ROUGH BOUNDARY OF THESE DENSER CLOUDS IS
FROM 26N160W TO 26N140W TO 10N140W TO 26N160W.

IN THE VICINITY OF THE MAIN HAWAIIAN ISLANDS AT 1800 UTC...
STRATOCUMULUS CLOUDS ARE OBSCURING MOST WINDWARD SLOPES BELOW 9000
FEET WITH A FEW CIRRUS CLOUDS MOVING ACROSS THE SKY. OVER NIIHAU
AND KAHOOLAWE IT IS SUNNY. OVER KAUAI...MOLOKAI...LANAI...MAUI AND
THE BIG ISLAND THE WINDWARD SLOPES ARE MOSTLY CLOUDY WHILE THE
LEEWARD SIDES ARE MOSTLY SUNNY. OVER OAHU...THE WINDWARD SLOPES
ARE MOSTLY CLOUDY WHILE THE LEEWARD AREAS ARE PARTLY CLOUDY.

$$

EVANS





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