Satellite Interpretation Message
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000
ATHW40 PHFO 271210
SIMHI

HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI
1230 UTC FRI FEB 27 2015

BASED ON DATA THROUGH 1200 UTC FEBRUARY 27 2015

WATER VAPOR IMAGES SHOWED A BROAD BUT SHALLOW AREA OF LOW PRESSURE
IN THE MIDDLE ATMOSPHERE CENTERED NEAR 18N 151W. LOWER CLOUDS
PASSING UNDER THIS AREA GREW AND DEVELOPED...SOME REACHING THE STAGE
OF TOWERING CUMULI WITHIN 100 MILES OF THE POINT 15N 155W. MORE
SIGNIFICANT THUNDERSTORMS AND TOWERING CUMULI DEVELOPED ALONG THE
EAST EDGE OF THIS FEATURE WITHIN 60 MILES OF THE CURVE FROM 20N 146W
TO 16N 142W...AND IN THE ITCZ TO THE SOUTHEAST. MIDDLE CLOUD LAYERS
FORMING ALONG THE EAST AND NORTHEAST EDGES OF THIS LOW MOSTLY TO
PARTLY OBSCURED LOWER FEATURES WITHIN 180 MILES OF THE CURVE FROM
30N 147W TO 22N 146W TO 15N 140W AND FURTHER NORTH AND SOUTHEAST.

TO THE NORTHWEST...A DISSIPATING BAND OF MIDDLE TO LOW CLOUD LAYERS
ASSOCIATED WITH A WEAKENING FRONT EXTENDED ACROSS HAWAIIAN WATERS
WITHIN 75 MILES OF THE CURVE FROM 29N 161W TO 25N 162W TO 17N 170W
TO 16N 180 AND FURTHER WEST. THUNDERSTORMS DEVELOPED WITHIN 45 MILES
OF THE POINT 25N 159W. MIDDLE TO HIGH CLOUD LAYERS SEPARATING FROM
THE MAIN BAND OBSCURED LOWER FEATURES MOSTLY TO COMPLETELY NORTH OF
THE CURVE FROM 30N 155W TO 25N 156W TO 26N 159W TO 30N 160W...AND
ALSO PARTLY TO MOSTLY WITHIN 150 MILES OF THE CURVE FROM 30N 154W TO
22N 155W TO 18N 162W TO 13N 180 AND FURTHER WEST AND NORTH. DENSELY
PACKED COLD-AIR CUMULI TO THE NORTHWEST OF THE MAIN BAND MERGED INTO
LARGE AREAS OF NEARLY SOLID LOW TO MIDDLE OVERCAST. ANOTHER BAND OF
LOW TO MIDDLE CLOUD LAYERS ASSOCIATED WITH A SECOND FRONT WAS
LOCATED NORTHWEST OF THE LINE FROM 30N 176W TO 28N 180.

TO THE SOUTH...LIGHT TO MODERATE THUNDERSTORM ACTIVITY CONTINUED IN
THE ITCZ FROM 11N TO THE EQUATOR...MAINLY EAST OF 166W. LAYERED
MIDDLE TO HIGH DEBRIS CLOUDS FROM THIS AND EARLIER CONVECTION PARTLY
TO MOSTLY OBSCURED LOWER FEATURES WITHIN 350 MILES OF THE CURVE FROM
11N 143W TO 05N 161W TO 01N 180.

OTHERWISE...CLOUD COVER ACROSS HAWAIIAN WATERS CONSISTED MAINLY OF
LOOSE CLUMPS OF LOW TO MIDDLE CLOUD LAYERS WITH EMBEDDED TOWERING
CUMULI WITHIN 120 MILES OF THE LINE FROM 16N 160W TO 11N 172W...
THOUGH INDIVIDUAL SMALL CUMULI ALSO OCCURRED THROUGHOUT. THESE
CLOUDS GENERALLY MOVED TOWARD THE WEST SOUTHWEST AT 10 TO 15 MILES
AN HOUR...AND ROSE TO HEIGHTS OF 10000 TO 12000 FEET...THOUGH SOME
TOWERING CUMULI APPROACHED 15000 FEET.

ACROSS THE MAIN HAWAIIAN ISLANDS...HIGH TO MIDDLE CLOUD LAYERS
ORIGINALLY PART OF THE FRONTAL CLOUD BAND OBSCURED LOWER FEATURES
PARTLY TO MOSTLY OVER KAUAI COUNTY...OAHU...AND LANAI. WHERE IT WAS
VISIBLE...LOWER CLOUD COVER CONSISTED MOSTLY OF MARINE CUMULI AND
STRATOCUMULI MOVING ASHORE ALONG EAST SLOPES OF THE BIG ISLAND.
LAYERED DEBRIS CLOUDS FROM AFTERNOON CUMULUS BUILDUPS ON FRIDAY
LARGELY HAD DISSIPATED OR MERGED WITH SURROUNDING CLOUDS. THE LOWER
CLOUDS GENERALLY ROSE TO HEIGHTS OF 6000 TO 7000 FEET. RADAR DATA
FROM NEAR THE ISLANDS SHOWED AREAS OF MODERATE TO HEAVY RAIN
OFFSHORE TO THE SOUTH OF KAUAI...SCATTERED SHOWERS WELL OFFSHORE TO
THE SOUTHWEST OF OAHU...AND SCATTERED SHOWERS OFFSHORE TO THE
SOUTHEAST OF THE BIG ISLAND...BUT ISOLATED SHOWERS AT MOST ELSEWHERE.

$$

RYSHKO




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