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Hawaiian Islands Satellite Interpetation Message

661
ATHW40 PHFO 250506
SIMHI

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

BASED ON DATA THROUGH 0500 UTC JULY 25 2014

WATER VAPOR IMAGES SHOWED AN AREA OF LOW PRESSURE IN THE MIDDLE
ATMOSPHERE LOCATED MOSTLY NORTH OF 30N NEAR THE DATELINE. TOWERING
CUMULI AND THEIR THIN HIGH LAYERED DEBRIS CLOUDS FORMED UNDER THIS
FEATURE WITHIN 60 MILES OF THE LINE FROM 30N 167W TO 28N 170W AND
FURTHER NORTHEAST.

TO THE SOUTH...LIGHT TO MODERATE THUNDERSTORM ACTIVITY CONTINUED IN
THE ITCZ FROM 13N TO 03N. LAYERED MIDDLE TO HIGH DEBRIS CLOUDS FROM
THIS AND EARLIER CONVECTION MOSTLY TO PARTLY OBSCURED LOWER FEATURES
FROM 16N TO THE EQUATOR. THINNER HIGH CLOUD LAYERS SEPARATING FROM
THE MAIN PART OF THE ITCZ ALSO PARTLY OBSCURED LOWER FEATURES WITHIN
60 MILES OF THE CURVE FROM 23N 166W TO 17N 172W TO 15N 171W...AND
ALSO SOUTH OF THE CURVE FROM 17N 140W TO 17N 150W TO 08N 162W.

A TROUGH OF LOW PRESSURE LOCATED IN THE ITCZ ABOUT 900 MILES
SOUTHEAST OF THE BIG ISLAND OF HAWAII PRODUCED PULSING THUNDERSTORMS
SHOWING A LIMITED...ASYMMETRICAL ORGANIZATION. THIS SYSTEM MAY
DEVELOP DURING THE NEXT FEW DAYS AS IT MOVES FURTHER WESTWARD ACROSS
THE CENTRAL PACIFIC.

OTHERWISE...CLOUD COVER ACROSS HAWAIIAN WATERS CONSISTED MAINLY OF
MARINE STRATOCUMULI AND CUMULI. THESE CLOUDS WERE GREATEST IN AREAL
COVERAGE EAST OF 168W. INDIVIDUAL SMALL CUMULI ALSO OCCURRED
THROUGHOUT. THESE CLOUDS GENERALLY MOVED TOWARD THE WEST SOUTHWEST
AT AROUND 15 MILES AN HOUR...AND ROSE TO HEIGHTS OF 8000 TO 10000
FEET.

ACROSS THE MAIN HAWAIIAN ISLANDS...CLOUD COVER CONSISTED ABOUT
EQUALLY OF MARINE STRATOCUMULI AND CUMULI MOVING ASHORE ALONG SLOPES
FACING NORTH THROUGH EAST ON THE ONE HAND...AND AFTERNOON CUMULUS
BUILDUPS WITH THEIR LAYERED DEBRIS CLOUDS OVER HIGHER TERRAIN INLAND
ON THE OTHER. BANDING OF THE CLOUDS OVER KAUAI AND OAHU PARALLEL TO
THE MOUNTAIN RANGES ON THOSE ISLANDS SUGGESTED THE PRESENCE OF
TURBULENCE IN THOSE CLOUD LAYERS. AREAS WITH THE LEAST CLOUD COVER
WERE LIMITED MOSTLY TO NIIHAU...WEST KAUAI...THE SOUTH COAST OF
OAHU...CENTRAL MOLOKAI...COASTAL LANAI...WEST SLOPES OF THE WEST
MAUI MOUNTAINS...THE CENTRAL ISTHMUS ON MAUI...THE SUMMIT AND
SOUTHEAST SLOPES OF HALEAKALA ON MAUI...THE WEST COAST OF NORTH AND
SOUTH KOHALA DISTRICTS ON THE BIG ISLAND...THE KAU DESERT ON THE BIG
ISLAND...AND INTERIOR UPLANDS OF THE BIG ISLAND ABOVE ELEVATIONS OF
ABOUT 6000 FEET. THESE CLOUDS GENERALLY ROSE TO HEIGHTS OF 6000 TO
9000 FEET. RADAR DATA FROM NEAR THE ISLANDS SHOWED SCATTERED SHOWERS
OVER THE KOOLAU RANGE ON OAHU AND OFFSHORE IN THE LEE PLUME WELL TO
THE WEST OF THE BIG ISLAND...BUT ISOLATED SHOWERS AT MOST ELSEWHERE.

$$

RYSHKO



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