Satellite Interpretation Message
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000
ATHW40 PHFO 221830
SIMHI

HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI
1830 UTC FRI MAY 22 2015

BASED ON DATA THROUGH 1800 UTC MAY 22 2015

WATER VAPOR IMAGERY SHOWED AN UPPER LEVEL LOW NEAR 31N 152W.  A
TROUGH EXTENDED FROM THE LOW SOUTHWEST TO NEAR KAUAI.  THE UPPER
LOW WAS MOVING EAST NORTHEAST NEAR 25 MILES AN HOUR.  BUT THE
ATTACHED TROUGH APPEARED TO BE SWINGING TOWARD THE EAST OR SLIGHTLY
EAST SOUTHEAST.

A SURFACE LOW LAY DIRECTLY BENEATH THE UPPER LOW.  AND A FRONT
SPIRALED AWAY FROM THE LOW AND EXTENDED THROUGH 30N 149W TO 25N
153W TO 23N 164W.  BROKEN TO OVERCAST LAYERED CLOUDS STRADDLED THE
FRONT NORTH OF 25N LATITUDE.  SOUTH OF 25N...BROKEN LOW CLOUDS WERE
COMMON ALONG THE FRONT.  A FEW STRANDS OF BROKEN CIRRUS CLOUDS WERE
ALSO TRAVERSING THE FRONT NORTHEAST FROM KAUAI.  THE FRONT WAS
MOVING EAST AT 15 TO 20 MILES AN HOUR.

SOUTH OF THE FRONT...A LARGE CLUSTER OF BROKEN TO OVERCAST LOW
CLOUDS...A MIX OF STRATOCUMULUS AND CUMULUS...COVERED MUCH OF THE
AREA WITHIN 325 MILES WEST SOUTHWEST OF THE BIG ISLAND.  CLOUDS
ALONG THE NORTHEAST PART OF THIS CLUSTER WERE DRIFTING NORTHEAST
ACROSS KAHOOLAWE ONTO SOUTH MAUI.  CLOUDS FROM THE CLUSTER OFFSHORE
WERE HUGGING THE COASTS ON THE LEE SIDE OF THE BIG ISLAND BUT OVER
LAND...IT WAS MOSTLY SUNNY WITH JUST A FEW LOW CLOUDS DOTTING THE
BIG ISLAND.

OAHU...LANAI...MOLOKAI AND THE REST OF MAUI WERE NEARLY CLOUD FREE.
SOME CLOUDS JUST SOUTH OF THE FRONT WERE MOVING ONTO THE NORTH HALF
OF KAUAI THIS MORNING.  BUT THE SOUTH HALF WAS SUNNY.  THOSE CLOUDS
NEAR KAUAI WERE DRIFTING SOUTHWARD.  THE CLOUDS SEEN NEAR THE BIG
ISLAND WERE NEARLY STATIONARY OR SHOWING VERY LITTLE MOVEMENT.

CLOUD TOPS NEAR THE BIG ISLAND WERE BETWEEN 10000 AND 13000 FEET.
THOSE CLOUDS NEAR KAUAI HAD TOPS AROUND 10000 FEET.

$$





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