Hawaiian Islands Satellite Interpretation Message
Tue, 26 Oct 2010 07:30:00 -0500
Based on data through 1200 UTC October 26 2010.
The latest water vapor imagery shows a nearly stationary upper level low centered about 275 miles west of Kauai. Another upper trough was located further northwest of the area near 30°N 179°W, also nearly stationary. An upper ridge dominates the area north and east of 20°N 150°W.
The upper trough near the dateline is producing the most significant weather in the area with a band of scattered thunderstorms embedded within a wide band of layered clouds. The band is affecting the area west of a line from 30°N 172°W to 15°N 180°W. The thunderstorm tops in this band are near 50000 feet. Another large area of mainly high cloudiness is surging northward around the upper trough centered just west of the main Hawaiian islands. This band covers the entire main island chain and stretches north to 27°N and south to the intertropical convergence zone, ITCZ, around 10°N, which is providing the moisture source for this upper level moisture. Isolated to scattered thunderstorms covers to area between 10°N and 08°N, along the ITCZ.
Due to the high clouds covering the main Hawaiian islands, lower level cloud features are not able to be seen with satellite imagery. However using radar and surface observations, broken low clouds with scattered showers can be found over most of Kauai, Oahu and the windward waters of Oahu and Maui county. Showers are also persistent on windward Maui and Molokai. Broken low clouds are also over the Kona coast of the Big Island. In areas free from the island terrain, the low clouds and scattered showers are moving to the west at around 30 to 35 mph.
BRENCHLEY
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