Satellite Interpretation Message
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000
ATHW40 PHFO 260528
SIMHI

HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI
0530 UTC WED NOV 26 2014

BASED ON DATA THROUGH 0500 UTC NOVEMBER 26 2014

THE TIGHTENING PRESSURE GRADIENT SOUTH OF A 1022 MB SURFACE HIGH
NEAR 28N 165W WITH A SURFACE RIDGE EXTENDING EAST THROUGH A POINT
NEARLY 500 MILES NORTH OF HILO HAS BEEN CAUSING THE LOW-LEVEL TRADE
WIND FLOW TO INCREASE ACROSS THE MAIN HAWAIIAN ISLANDS EARLY THIS
EVENING. THE LOW-LEVEL TRADE WIND FLOW WAS CARRYING BROKEN TO
OVERCAST STRATOCUMULUS CLOUDS ACROSS MOST OF THE WINDWARD COASTAL
WATERS FROM OAHU EASTWARD. SCATTERED TO BROKEN STRATOCUMULUS CLOUDS
WERE OVER MOST OF THE COASTAL WATERS ADJACENT TO KAUAI. RADAR
REFLECTIVITY DATA SHOWED SCATTERED SHOWERS EMBEDDED WITHIN THE
CLOUDS NEAR THE WINDWARD BIG ISLAND AND OVER THE COASTAL WATERS
NORTH OF MAUI COUNTY.

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 700 PM HST TUESDAY...BROKEN TO OVERCAST LOW CLOUDS WERE ACROSS
MOST OF THE NORTHEASTERN HALF OF KAUAI...WHILE SCATTERED TO BROKEN
LOW CLOUDS WERE ELSEWHERE ON THAT ISLAND. BROKEN TO OVERCAST LOW
CLOUDS COVERED MOST OF THE WINDWARD SHORELINES...THE KOOLAU MOUNTAIN
RANGE AND MOUNT KAALA ON OAHU. BROKEN TO OVERCAST LOW CLOUDS WERE
ABOVE THE NORTHEASTERN TIP OF MOLOKAI. A FEW LOW CLOUDS WERE OVER
NORTHEASTERN LANAI. ON MAUI...BROKEN TO OVERCAST LOW CLOUDS WERE
ALONG THE NORTHEASTERN COASTS...THE LOWER WINDWARD FACING SLOPES OF
MOUNT HALEAKALA...AND THE WESTERN MOUNTAINS. BROKEN TO OVERCAST LOW
CLOUDS COVERED MOST OF THE WINDWARD BIG ISLAND. BROKEN LOW CLOUDS
WERE ALONG THE COASTAL AND UPSLOPE SECTIONS OF THE KONA AND KAU
DISTRICTS ON THE BIG ISLAND.

ACCORDING TO LOOPS OF WATER VAPOR IMAGERY...THE FLOW HIGH ABOVE THE
MAIN HAWAIIAN ISLANDS WAS NEARLY ZONAL FROM THE WEST AT 20 TO 30 MPH
EARLY THIS EVENING. HOWEVER...THE AXIS OF A MID-TROPOSPHERIC TROUGH
EXTENDED FROM NEAR 30N 154.5W THROUGH A POINT ABOUT 270 MILES WEST
NORTHWEST OF LIHUE TO 20N 165W. THIS FEATURE HAS BEEN PROPAGATING
EASTWARD AT ABOUT 20 MPH DURING THE PAST 6 HOURS.

TO THE EAST OF THE MAIN HAWAIIAN ISLANDS 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 29N 140W TO 23N 145W THROUGH A POINT ABOUT 380 MILES EAST OF
HILO TO 14N 156W. THIS SOUTHEASTERN EDGE HAS BEEN MOVING EASTWARD AT
ABOUT 10 MPH NORTH OF 24N...WHILE IT REMAINED NEARLY STATIONARY
ELSEWHERE. FAR NORTHWEST OF THE MAIN HAWAIIAN ISLANDS...BROKEN TO
OVERCAST LOW CLOUDS AND SHOWERS ASSOCIATED WITH A NEARLY STATIONARY
FRONT WERE NORTHWEST OF A LINE FROM 30N 158W THROUGH A POINT ABOUT
85 MILES SOUTH OF MIDWAY ATOLL TO 25.5N 180E.

IN THE DEEP TROPICS FAR SOUTH OF THE HAWAIIAN ISLANDS...THE
INTERTROPICAL CONVERGENCE ZONE...OR ITCZ...EXTENDED FROM NEAR 09N
140W TO 07N 152W TO 07N 173W TO 06N 180E. SCATTERED THUNDERSTORMS
WERE WITHIN 200 MILES OF THE ITCZ WEST OF 170W. ISOLATED
THUNDERSTORMS WERE WITHIN 110 MILES OF THE ITCZ EAST OF 170W. THE
HIGHEST TOPS OF THE CUMULONIMBUS CLOUDS ALONG THE ITCZ WERE
ESTIMATED TO BE ABOUT 55 THOUSAND FEET.

$$

HOUSTON







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