Satellite Interpretation Message
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000
ATHW40 PHFO 021227
SIMHI

HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI
1230 UTC TUE JUN 02 2015

BASED ON DATA THROUGH 1200 UTC JUNE 02 2015

REGIONAL INFRARED SATELLITE IMAGES REVEAL THAT A TYPICAL...AND
SEASONABLE...TRADE WIND WEATHER PATTERN IS BECOMING ESTABLISHED
OVER THE MAIN HAWAIIAN ISLANDS...AFTER A PERIOD OF LIGHTER THAN
NORMAL TRADE WIND SPEEDS. WATER VAPOR IMAGERY SHOWS THAT A LOW ALOFT
NORTHWEST OF THE ISLANDS...THAT WAS EARLIER SUPPORTING AN AREA OF
ENHANCED SHOWERS OVER HAWAIIAN OFFSHORE WATERS WEST AND NORTHWEST OF
KAUAI...CONTINUES TO TRACK STEADILY TOWARD THE NORTHEAST. THUS THE
NEAR COMPLETE COLLAPSE OF AN AREA OF ASSOCIATED LOW- AND MID-LEVEL
SHOWERY CLOUDS THAT WERE LURKING WEST OF KAUAI EARLIER IN THE NIGHT.

CLOUD COVER HAS GENERALLY DECREASED OVER THE ISLANDS AND ADJACENT
WATERS SINCE SUNDOWN ON MONDAY...WITH FEW TO SCATTERED LOW CLOUDS
PREVAILING OVER THE ISLANDS AND ADJACENT WATERS FROM KAUAI TO MAUI.
SCATTERED TO BROKEN LOW CLOUDS ARE OVER WINDWARD BIG ISLAND...AND
NEAR SHORE WINDWARD AND LEEWARD COASTAL WATERS. WISPY HIGH CLOUDS
THAT WERE PREVIOUSLY MOVING OVER THE ISLANDS HAVE DISSIPATED OVER
THE PAST COUPLE OF HOURS. A FEW STABLE MID-LEVEL CLOUDS NEAR AND
OUT TO 200 MILES WEST-SOUTHWEST OF KAUAI ARE RELATED TO THE
DEPARTING LOW ALOFT. LOW CLOUDS NEAR THE ISLANDS ARE MOVING TOWARD
THE WEST-SOUTHWEST AT SPEEDS RIGHT AROUND 20 MPH.

WATER VAPOR IMAGERY SHOWS A LOW ALOFT CENTERED NEAR 26N 165W...OR
ABOUT 400 MILES NORTHWEST OF KAUAI...MOVING NORTHEAST NEAR 15 MPH.
A RIDGE ALOFT IS CENTERED ABOUT 500 MILES EAST OF THE BIG ISLAND
NEAR 20N 148W...AND THE GRADIENT BETWEEN THESE TWO FEATURE IS
INDUCING A SOUTHWESTERLY FLOW ALOFT OVER THE ISLANDS. FLOW AROUND
THE SOUTHEASTERN PORTION OF THIS RIDGE IS LEADING TO RELATIVELY
STRONG EASTERLY WINDS ALOFT OVER A PERSISTENT YET POORLY ORGANIZED
TROPICAL DISTURBANCE CENTERED FAR SOUTHEAST OF THE ISLANDS. THE LOW
CLOUD SWIRL MARKING THIS DISTURBANCE IS CENTERED NEAR 9N 141W...
AS CONFIRMED BY A RECENT NIGHT-TIME VISIBLE IMAGE. DISORGANIZED
SHOWERS AND THUNDERSTORMS ASSOCIATED WITH THIS LOW CONTINUE TO
SPORADICALLY DEVELOP...WITH THE AFOREMENTIONED EAST TO SOUTHEAST
WINDS ALOFT KEEPING THE BULK OF THE ASSOCIATED THUNDERSTORMS TO THE
WEST AND NORTHWEST OF THE LOW CENTER.

$$

BIRCHARD




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