Satellite Interpretation Message
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000
ATHW40 PHFO 280004
SIMHI

HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI
0030 UTC SAT MAY 28 2016

BASED ON DATA THROUGH 0000 UTC MAY 28 2016

WATER VAPOR IMAGERY SHOWS A BROAD UPPER LEVEL TROUGH TO THE WEST
OF KAUAI...WITH ITS AXIS RUNNING FROM NORTH OF 30N 164W TO 17N
176W. AT THE SURFACE A NEARLY STATIONARY TROUGH RUNS FROM 30N
159W TO 20N 167W...ABOUT 300 MILES NORTHWEST OF KAUAI. A THIN
BAND OF SCATTERED CUMULUS /CU/ AND TOWERING CUMULUS /TCU/ IS BEING
DRAWN INTO THE TROUGH FROM NEAR KAUAI. OTHERWISE...THERE IS LITTLE
IN THE WAY OF CLOUD DEFINITION ALONG THE TROUGH. ANOTHER SURFACE
TROUGH INTERSECTS THE FAR NORTHWESTERN CORNER OF THE AREA FROM 30N
167W TO 26N 180W. A 100-MILE WIDE AREA OF SCATTERED TO BROKEN
LAYERED CLOUDS ARE ALONG THE TROUGH FROM FROM 30N 167W TO 26N
174W.

ELSEWHERE IN THE AREA HIGH PRESSURE DOMINATES. LOW LEVEL SATELLITE
WINDS REVEAL THE CENTER OF A SURFACE HIGH PRESSURE TO BE FAR
NORTHEAST OF THE AREA NEAR 36N 140W. THE ASSOCIATED RIDGE RUNS
FROM THE CENTER OF THE HIGH TO NORTH OF KAUAI NEAR 24N 160W. EAST
OF 148W...BROKEN STRATOCUMULUS /SC/ AND CU ARE PRIMARILY MOVING TO
THE WEST BETWEEN 15 AND 20 MPH. WEST OF 148W TO THE SURFACE TROUGH
CLOSEST TO KAUAI...FEW TO SCATTERED SC AND CU ARE MOVING TO THE
NORTHWEST BETWEEN 15 AND 20 MPH. OTHER AREAS HAVE SCATTERED SC
AND CU...GENERALLY MOVING TO THE WEST BETWEEN 15 AND 20 MPH.

THE MAIN HAWAIIAN ISLANDS SIT WITHIN THE SOUTHEAST FLOW...SOUTH OF
THE RIDGE. THE CENTRAL ISLANDS...INCLUDING OAHU MOLOKAI LANAI AND
MAUI...HAVE DEVELOPED BROKEN LOW LEVEL CLOUDS OVER INTERIOR
SECTIONS. ON THE BIG ISLAND...BROKEN TO OVERCAST LOW LEVEL CLOUDS
HAVE ALSO BUILT UP ALONG THE COAST AND OVER INTERIOR SECTIONS
ALONG THE SLOPES OF MAUNA KEA AND MAUNA LOA. THE SUMMITS HAVE FEW
PASSING CLOUDS. SHOWERY LOW LEVEL CLOUDS CONTINUE TO STREAM UP
FROM THE SOUTH OVER KAUAI AND NIIHAU...FOLLOWING INTO THE TROUGH
MENTIONED ABOVE. THE LAND AREAS OVER KAUAI AND NIIHAU HAVE BROKEN
TO OVERCAST LOW LEVEL CLOUDS...CARRYING CLOUD TOPS NEAR 15
THOUSAND FEET WITH ISOLATED TCU TO 20 THOUSAND FEET.

ISOLATED TO SCATTERED CONVECTION ALONG THE INTER-TROPICAL
CONVERGENCE ZONE /ITCZ/ RUNS FROM 05N 180W TO 11N 165W T0 07N 150W
TO 07N 130W. CIRRUS /CI/ BLOW OFF FROM THESE THUNDERSTORMS IS
BEING PULLED NORTH AND EAST ALONG AN UPPER LEVEL JET. SCATTERED TO
BROKEN CI IS FOLLOWING A LINE FROM 10N 170W TO 20N 141W.

$$

EATON


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