Satellite Interpretation Message
Issued by NWS

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000
ATHW40 PHFO 250526
SIMHI

HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI
0530 UTC THU DEC 25 2014

BASED ON DATA THROUGH 0500 UTC DECEMBER 25 2014

WATER VAPOR IMAGES SHOWED AN AREA OF LOW PRESSURE IN THE MIDDLE
ATMOSPHERE OVER THE MAIN HAWAIIAN ISLANDS. ALTHOUGH NO CLOUDS WERE
UNIQUELY ASSOCIATED WITH THE LOW...IT SIGNIFICANTLY INFLUENCED CLOUD
COVER ACROSS MOST OF THE HAWAIIAN WATERS.

TO THE NORTHEAST THROUGH SOUTH...A BAND OF DEEP CLOUD LAYERS
ASSOCIATED WITH A FRONT EXTENDED ACROSS HAWAIIAN WATERS NORTH OF THE
CURVE FROM 21N 140W TO 26N 144W TO 14N 153W TO 05N 166W TO 06N 174W
TO 08N 164W TO 20N 155W TO 24N 157W TO 27N 161W TO 30N 161W. THIS
FEATURE SHIFTED NORTH SLOWLY.

TO THE SOUTHEAST...LIGHT THUNDERSTORM ACTIVITY CONTINUED IN THE ITCZ
FROM 12N TO 06N...ALMOST ENTIRELY EAST OF 149W. LAYERED DEBRIS
CLOUDS FROM THIS AND EARLIER CONVECTION OBSCURED LOWER FEATURES
PARTLY TO MOSTLY SOUTHEAST OF THE CURVE FROM 13N 140W TO 18N 147W TO
16N 151W TO 08N 150W TO 04N 143W TO 05N 140W...AND ALSO PARTLY FROM
09N TO THE EQUATOR ACROSS MOST OF THE AREA.

ELSEWHERE...CLOUD COVER ACROSS HAWAIIAN WATERS CONSISTED MAINLY OF
COLD-AIR CUMULI MERGING INTO AREAS OF NEARLY SOLID LOW TO MIDDLE
OVERCAST NORTHWEST OF THE CURVE FROM 30N 161W TO 23N 162W TO 17N
163W TO 11N 173W TO 21N 177W TO 30N 169W...AND ALSO WITHIN 60 MILES
OF THE LINE FROM 30N 173W TO 25N 180. THESE CLOUDS GENERALLY MOVED
TOWARD THE WEST TO SOUTHWEST AT 10 TO 25 MILES A HOUR...AND ROSE TO
HEIGHTS OF 8000 TO 10000 FEET.

ACROSS THE MAIN HAWAIIAN ISLANDS...CLOUD LAYERS ASSOCIATED WITH THE
FRONT PARTLY OBSCURED THE BIG ISLAND. WHERE IT WAS VISIBLE...OTHER
CLOUD COVER CONSISTED MOSTLY OF CUMULUS BUILDUPS AND THEIR LAYERED
DEBRIS CLOUDS. AREAS WITH THE LEAST CLOUD COVER WERE LIMITED MAINLY
TO WEST MOLOKAI AND INTERIOR UPLANDS OF THE BIG ISLAND ABOVE
ELEVATIONS OF ABOUT 5500 FEET. THESE CLOUDS VARIED IN HEIGHT FROM
6000 TO 11000 FEET. SNOW WAS VISIBLE ON THE SUMMITS OF MAUNA KEA
AND MAUNA LOA ON THE BIG ISLAND.

RADAR DATA FROM NEAR THE ISLANDS SHOWED SCATTERED MODERATE TO HEAVY
SHOWERS OFFSHORE TO THE NORTHWEST THROUGH NORTHEAST OF OAHU...AND
SCATTERED SHOWERS WELL OFFSHORE TO THE SOUTH THROUGH NORTHWEST OF
KAUAI...BUT ISOLATED SHOWERS AT MOST ELSEWHERE. STRONG RADAR RETURNS
OVER LOWER TO MIDDLE SOUTHEAST SLOPES OF THE BIG ISLAND PROBABLY
WERE SPURIOUS.

$$

RYSHKO





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