Satellite Interpretation Message
Issued by NWS

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000
ATHW40 PHFO 021230
SIMHI

HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI
1230 UTC MON MAY 02 2016

BASED ON DATA THROUGH 1200 UTC MAY 02 2016

ACCORDING TO THE 2 AM HST SATELLITE IMAGERY...CLOUDINESS HAS
INCREASED SLIGHTLY UPWIND OF MAUI COUNTY AND THE BIG ISLAND...ENOUGH
FOR A FEW PASSING SHOWERS FOR THESE ISLANDS. EXISTING CLOUDINESS
UPWIND OF OAHU AND KAUAI...CONTINUE TO PROVIDE MORE FREQUENT PASSING
SHOWERS TO THESE ISLANDS. IN THE PAST COUPLE OF HOURS...HOWEVER...
THERE HAS BEEN SOME DISSIPATION WITH THESE CLOUDS. ALTHOUGH THE
SHOWERS ARE FAVORING THE WINDWARD AND MOUNTAIN AREAS... SOME OF
THESE SHOWERS ARE REACHING DEEP INTO THE LEEWARD AREAS OF THE
SMALLER ISLANDS THANKS TO THE STEADY TRADES BLOWING AT AROUND 20
MPH. SOME OF THESE SHOWERS ARE STREAKING THROUGH SOME OF THE WATER
WAYS SUCH AS THE KAUAI AND KAIWI CHANNELS AND INTO THE LEEWARD
WATERS. EVENING CLOUDINESS OVER ON THE KONA SIDE OF THE BIG ISLAND
HAS GIVEN WAY TO FAIR SKIES.

THE TRADE WINDS ARE BEING SUPPLIED BY A SURFACE HIGH LOCATED 900
MILES NORTH OF KAUAI AT 36N160W. THE TRADES HAVE TAKEN A MORE
NORTHEAST TO SOUTHWEST MOTION DURING THE COURSE OF THE PAST 7 HOURS.

A FRONTAL IS NOTED ON SATELLITE SOME 210 MILES NORTH OF KAUAI. THE
FEATURE HAS TRAVELED 75 MILES TOWARD THE ISLANDS DURING THE PAST 7
HOURS. THE COORDINATES OF THE FRONT ARE 30N141W 27N145W 26N145W
26N170W 27N180W. THE LEADING EDGE OF THIS 160 TO 200 MILE WIDE BAND
IS NOW NEAR LAYSAN ISLAND WHILE MIDWAY ATOLL IS IN THE THICK OF IT.

WATER VAPOR IMAGERY SHOWS AN UPPER LEVEL LOW NEAR 15N179W...DRIFTING
SLOWLY WEST. A TROUGH EXTENDS NORTHEASTWARD THROUGH 19N170W TO
19N160W TO 18N150W...SOUTHERN BIG ISLAND...AND 20N140W. JUST TO THE
SOUTH OF THIS TROUGH IS A PRONG OF HIGH LEVEL CIRRUS CLOUDS. THE
UPPER LEVEL WINDS ARE PICKING UP CONVECTIVE DEBRIS FROM A CLUSTER OF
THUNDERSTORMS LOCATED NEAR 05N178E. THIS FIELD OF CIRRUS THINS OUT
AT 15N145W.

THE TROPICS ARE CLEAR OF ANY DEEP...STRONG CONVECTION.

$$
LAU



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