Satellite Interpretation Message
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000
ATHW40 PHFO 111834
SIMHI

HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI
1830 UTC THU FEB 11 2016

BASED ON DATA THROUGH 1800 UTC FEBRUARY 11 2016

SATELLITE IMAGERY CENTERED OVER THE MAIN HAWAIIAN ISLANDS SHOWS
THAT A TRADE WIND FLOW PREVAILS THIS MORNING. SCATTERED TO LOCALLY
BROKEN LOW CLOUDS ARE CURRENTLY TRACKING WEST-SOUTHWESTWARD AT
SPEEDS BETWEEN 10 AND 15 MPH...AFTER MOVING TOWARD THE SOUTHWEST
EARLIER IN THE NIGHT. SOME OF THE LOW CLOUDS NEAR THE ISLANDS ARE
LOOSELY ORGANIZED INTO NARROW EAST-NORTHEAST TO WEST-SOUTHWEST
ORIENTED BANDS...WITH THE LARGEST OF THESE BANDS LOCATED NEAR AND
UPSTREAM OF KAUAI AND OAHU.

DESPITE THE PREVAILING TRADE WIND FLOW AND THE PRESENCE OF
CLOUDS OVER WINDWARD WATERS...MOST ISLAND AREAS ARE UNDER MOSTLY
SUNNY SKIES. SOME EXCEPTIONS INCLUDE THE EASTERN LOWER SLOPES OF
KAUAI...THE KOOLAU SLOPES OF OAHU...AND THE EASTERN TIP OF
MOLOKAI...WHERE SCATTERED TO BROKEN LOW CLOUDS ARE NOTED. ON
OAHU...ONE OF THE AFOREMENTIONED NARROW CLOUD LINES INTERSECTS THE
SOUTHEAST SIDE OF OAHU...LOCALLY INCREASING THE CLOUDINESS FROM
WAIMANALO TO NIU VALLEY TO JUST OFFSHORE OF KAHALA.

THE TROPICAL CENTRAL NORTH PACIFIC /TCNP/ FROM 10N TO 30N BETWEEN
140W AND THE DATE LINE IS DOMINATED BY STABLE LOW CLOUDS WITH
EMBEDDED SHOWERY ELEMENTS...BUT ISOLATED THUNDERSTORMS ARE NOTED
IN THE FAR NORTHEAST PORTION OF THE AREA NEAR 25N 140W. NEARBY...
NORTH OF 25N AND EAST OF 148W...BROKEN TO OVERCAST HIGH-LEVEL
CIRRUS CLOUDS ARE NOTED. WATER VAPOR IMAGERY SHOWS THAT THESE
FEATURES ARE DEVELOPING IN RESPONSE TO A TROUGH ALOFT THAT IS
SHARPEST NORTH OF THE AREA...WITH THE TROUGH AXIS ALONG A LINE
FROM 30N 144W TO 25N 140W. ELSEWHERE...A PERSISTENT RIDGE ALOFT IS
CENTERED FAR SOUTHWEST OF THE ISLANDS...WITH AN ASSOCIATED RIDGE
EXTENDING EASTWARD ALONG 10N AND 12N. A DRY AND STABLE NORTHWEST
FLOW ALOFT PREVAILS OVER THE HAWAIIAN ISLANDS.

$$

BIRCHARD


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