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Hawaiian Islands Satellite Interpetation Message

398
ATHW40 PHFO 301217
SIMHI

HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI
1230 UTC TUE SEP 30 2014

BASED ON DATA THROUGH 1200 UTC SEPTEMBER 30 2014

WATER VAPOR IMAGES SHOWED AN AREA OF LOW PRESSURE IN THE MIDDLE
ATMOSPHERE OVER THE MAIN HAWAIIAN ISLANDS. THUNDERSTORMS FORMING
UNDER THIS FEATURE WERE ORGANIZED INTO THREE MAIN GROUPS...A LINE OF
VERY STRONG CELLS WITHIN 75 MILES OF THE LINE FROM 26N 158W TO 22N
155W...A SINGLE STRONG CELL WITHIN 75 MILES OF THE POINT 17N 162W...
AND A CLUSTER OF RELATIVELY SMALL CELLS WITHIN 90 MILES OF THE POINT
21N 162W. SMALL POSSIBLE THUNDERSTORMS ALSO WERE PRESENT OFFSHORE TO
THE SOUTH-SOUTHWEST OF OAHU. LAYERED HIGH TO MIDDLE DEBRIS CLOUDS
FROM THIS AND EARLIER CONVECTION PARTLY TO MOSTLY OBSCURED LOWER
FEATURES WITHIN 150 MILES OF THE LINE FROM 27N 153W TO 23N 150W.

TO THE NORTHWEST...TOWERING CUMULI AND POSSIBLE THUNDERSTORMS
ASSOCIATED WITH A FRONT WERE LOCATED WITHIN 75 MILES OF THE CURVE
FROM 28N 165W TO 26N 169W TO 26N 177W. FRAGMENTS OF CLOUD LAYERS AT
VARIOUS HEIGHTS SHEARING OFF OF THE MAIN FRONTAL CLOUD BAND PARTLY
TO MOSTLY OBSCURED LOWER FEATURES WITHIN 90 MILES OF THE LINE FROM
30N 161W TO 22N 166W.

TO THE SOUTHEAST THROUGH SOUTHWEST...MODERATE THUNDERSTORM ACTIVITY
CONTINUED IN THE ITCZ FROM 12N TO 04N. LAYERED MIDDLE TO HIGH DEBRIS
CLOUDS FROM THIS AND EARLIER CONVECTION MOSTLY OBSCURED LOWER
FEATURES FROM 14N TO THE EQUATOR. THINNER HIGH CLOUD LAYERS
FOLLOWING A JET STREAM OUT OF THE ITCZ ALSO MOSTLY TO PARTLY
OBSCURED LOWER FEATURES WITHIN 60 MILES OF THE CURVE FROM 16N 140W
TO 19N 149W TO 16N 160W TO 16N 164W TO 12N 170W.

OTHERWISE...CLOUD COVER ACROSS HAWAIIAN WATERS CONSISTED MAINLY OF
MODERATELY PACKED MARINE STRATOCUMULI AND STRATUS LAYERS EAST OF
ABOUT 155W. INDIVIDUAL SMALL CUMULI ALSO WERE PRESENT THROUGHOUT.
THESE CLOUDS GENERALLY MOVED TOWARD THE WEST AT AROUND 15 MILES AN
HOUR...AND ROSE TO HEIGHTS OF 8000 TO 10000 FEET...THOUGH TALLER
CUMULI APPROACHED 15000 FEET.

ACROSS THE MAIN HAWAIIAN ISLANDS...CLOUD COVER CONSISTED MOSTLY OF
MARINE STRATOCUMULI AND STRATUS FRAGMENTS MOVING ASHORE OVER MAUI
COUNTY...AND LAYERED MIDDLE TO HIGH DEBRIS CLOUDS FLOWING OVER KAUAI
COUNTY FROM THUNDERSTORMS OFFSHORE TO THE WEST. TOWERING CUMULI ALSO
DEVELOPED OVER SOUTHEAST MAUI. LAYERED DEBRIS CLOUDS FROM AFTERNOON
CUMULUS BUILDUPS ON MONDAY LARGELY HAD DISSIPATED OR MOVED OFFSHORE.

RADAR DATA FROM NEAR THE ISLANDS SHOWED A LARGE AREA OF HEAVY RAIN
WELL TO THE NORTHEAST OF THE STATE...SCATTERED HEAVY SHOWERS OVER
SOUTHEAST MAUI...SCATTERED HEAVY SHOWERS OFFSHORE TO THE WEST OF THE
BIG ISLAND...AND SCATTERED HEAVY SHOWERS OFFSHORE TO THE SOUTH
THROUGH WEST OF OAHU. ELSEWHERE...RADAR DATA SHOWED ISOLATED SHOWERS
AT MOST.

$$

RYSHKO



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It was last modified on: Tue, Sep 21 2010 - 2314 UTC
Send comments to: Ryan Lyman