Satellite Interpretation Message
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000
ATHW40 PHFO 261226
SIMHI

HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI
1230 UTC WED NOV 26 2014

BASED ON DATA THROUGH 1200 UTC NOVEMBER 26 2014

THE RELATIVELY TIGHT PRESSURE GRADIENT SOUTH OF A NEARLY WEST TO
EAST ORIENTED SURFACE RIDGE LOCATED MORE THAN 400 MILES NORTH OF
HONOLULU HAS BEEN PRODUCING GUSTY TRADE WINDS ACROSS MOST OF THE
MAIN HAWAIIAN ISLANDS EARLY THIS MORNING. THE LOW-LEVEL TRADE WIND
FLOW WAS CARRYING BROKEN TO LOCALLY OVERCAST LOW CLOUDS ACROSS MOST
OF THE WINDWARD COASTAL WATERS. ADDITIONAL BROKEN LOW CLOUDS WERE
EVIDENT ACROSS THE LEEWARD KAUAI WATERS AND THE WATERS IMMEDIATELY
SOUTHEAST OF THE BIG ISLAND. RADAR REFLECTIVITY DATA SHOWED
SCATTERED SHOWERS EMBEDDED WITHIN THE LOW CLOUDS NEAR THE WINDWARD
BIG ISLAND.

THE INDIVIDUAL LOW CLOUD ELEMENTS ACROSS THE WINDWARD COASTAL WATERS
WERE GENERALLY MOVING TOWARD THE SOUTH SOUTHWEST AT 10 TO 20 MPH.
THE HIGHEST TOPS OF THE LOW CLOUDS IN THE VICINITY OF THE MAIN
HAWAIIAN ISLANDS WERE ESTIMATED TO BE ABOUT 7 THOUSAND FEET.

AS OF 200 AM HST WEDNESDAY...BROKEN TO OVERCAST LOW CLOUDS COVERED
THE NORTHEASTERN TWO-THIRDS OF KAUAI...WITH SCATTERED LOW CLOUDS
WERE ELSEWHERE ON THAT ISLAND. BROKEN LOW CLOUDS WERE ALONG THE
KOOLAU MOUNTAINS AND WINDWARD SHORELINES OF OAHU...AS WELL AS THE
NORTHEASTERN TIP OF MOLOKAI. SKIES APPEARED TO BE MOSTLY CLEAR ON
LANAI. ON MAUI...SCATTERED TO BROKEN LOW CLOUDS WERE ABOVE PARTS OF
THE NORTH AND NORTHEAST FACING SHORELINES...THE LOWER WINDWARD
SLOPES OF MOUNT HALEAKALA AND THE WESTERN MOUNTAINS. BROKEN TO
OVERCAST LOW CLOUDS WERE ALONG MOST OF THE WINDWARD COASTAL SECTIONS
OF THE BIG ISLAND.

ACCORDING TO LOOPS OF WATER VAPOR IMAGERY...THE FLOW HIGH ABOVE THE
MAIN HAWAIIAN ISLANDS WAS NEARLY ZONAL FROM THE WEST TO WEST
NORTHWEST AT 20 TO 25 MPH EARLY THIS MORNING. HOWEVER...THE AXIS OF
A MID-TROPOSPHERIC TROUGH EXTENDED FROM NEAR 30N 151W ACROSS KAUAI
TO 18N 162W. THIS FEATURE HAS BEEN PROPAGATING EASTWARD AT ABOUT 30
MPH DURING THE PAST 6 HOURS.

TO THE EAST OF THE MAIN HAWAIIAN ISLAND CHAIN...THE SOUTHEASTERN
EDGE OF AN APPROXIMATELY 130 MILE WIDE BAND OF BROKEN TO OVERCAST
LOW CLOUDS AND SHOWERS ASSOCIATED WITH A SURFACE FRONT EXTENDED FROM
NEAR 28N 140W TO 24N 143W THROUGH A POINT ABOUT 390 MILES EAST OF
HILO TO 15N 157W. THIS SOUTHEASTERN EDGE HAS BEEN MOVING SLOWLY
EASTWARD AT ABOUT 10 MPH NORTH OF 24N...WHILE IT REMAINED NEARLY
STATIONARY ELSEWHERE. FAR NORTHWEST OF THE MAIN HAWAIIAN ISLANDS...
BROKEN TO OVERCAST LAYERED CLOUDS AND SHOWERS ASSOCIATED WITH
ANOTHER FRONT WERE NORTHWEST OF A LINE FROM 30N 165W TO 28N 175W
THROUGH A POINT ABOUT 55 MILES SOUTHEAST OF MIDWAY ATOLL TO 25N 180E.

IN THE DEEP TROPICS FAR SOUTH OF THE HAWAIIAN ISLANDS...THE
INTERTROPICAL CONVERGENCE ZONE...OR ITCZ...EXTENDED FROM NEAR 08N
140W TO 06N 160W TO 06N 170W TO 04.5N 180E. SCATTERED THUNDERSTORMS
WERE WITHIN 220 MILES OF THE ITCZ WEST OF 160W. ISOLATED
THUNDERSTORMS WERE WITHIN 130 MILES OF THE ITCZ EAST OF 160W. THE
HIGHEST TOPS OF THE CUMULONIMBUS CLOUDS ALONG THE ITCZ WERE
ESTIMATED TO BE ABOUT 54 THOUSAND FEET.

$$

HOUSTON






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