Satellite Interpretation Message
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000
ATHW40 PHFO 300028
SIMHI

HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI
0030 UTC SAT MAY 30 2015

BASED ON DATA THROUGH 0000 UTC MAY 30 2015

A DEEP PERSISTENT SLOW-MOVING TROUGH AT THE SURFACE AND ALOFT OVER
NORTHEAST PORTION OF THE AREA CONTINUES TO DISRUPT THE TRADE WIND
FLOW OVER THE HAWAIIAN ISLANDS.

THE MID LEVEL PORTION OF THE TROUGH EXTENDS ALONG 30N146W TO 26N148W
TO JUST NORTH OF KAUAI NEAR 23N160W TO 20N175W. THE NORTHERN PORTION
OF THE TROUGH CONTINUES TO MOVE EAST SLOWLY WHILE THE PART NEAR AND
WEST OF THE ISLANDS IS NEARLY STATIONARY. THE UPPER LEVEL TROUGH IS
MAINTAINING A NEARLY STATIONARY FRONT THAT IS MARKED BY A 275
MILE-WIDE BAND OF BROKEN LAYERED CLOUDS CENTERED ALONG 28N140W AND
23N147W. TO THE WEST...THIS FEATURE CONTINUES TO 21N152W TO 24N158W
AS A WEAK TROUGH. THE WEAK TROUGH IS PRODUCING A NARROW BAND OF
BROKEN CUMULUS CLOUDS ABOUT 75 MILES NORTH OF KAUAI AND 200 MILES
NORTH OF THE OTHER ISLANDS.

THE SURFACE TROUGH NORTH OF THE ISLANDS CONTINUES TO ALTER THE
TRADE WIND FLOW. SCATTERED CUMULUS CLOUDS WITH TOPS MAINLY BETWEEN
7000 AND 8000 FT ARE TRAVELLING FROM THE NORTHEAST AT 10 TO 15 MPH
OVER THE WESTERN END OF THE STATE...BACKING OUT OF THE NORTH OVER
THE BIG ISLAND. WITH THE LOW LEVEL FLOW REMAINING RATHER LIGHT...
DAYTIME SEA BREEZES HAVE PRODUCED BROKEN TO OVERCAST LOW CLOUDS OVER
ALL ISLAND INTERIOR AND MAUKA AREAS BELOW 9000 FT.

ELSEWHERE...THUNDERSTORM ACTIVITY WITHIN THE ITCZ IS CONFINED SOUTH
OF 12N WITH A MORE PERSISTENT CLUSTER LOCATED NEAR 140W. FOR MIDWAY
ATOLL...SURFACE HIGH PRESSURE CENTERED ABOUT 750 MILES TO THE
NORTHWEST IS DRIVING A FIELD OF BROKEN STRATOCUMULUS WITHIN A
NORTHEASTERLY LOW LEVEL FLOW. AN APPROACHING WEAK UPPER LEVEL TROUGH
CONTINUES TO PRODUCE SCATTERED TO BROKEN HIGH CLOUDS OVERHEAD.

$$

DWROE





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