Hawaiian Islands Satellite Interpretation Message
Wed, 24 Nov 2010 12:30:00 -0600
Based on data through 1800 UTC November 24 2010.
An upper level ridge resides over the center of the region with water vapor imagery showing upper level troughs both to the east and west of the ridge. The ridge axis run southwest to northeast from 15°N 170°W to 30°N 160°W. The upper trough to the east is affecting the area east of 155°W north of 22°N. This trough is moving southwest slowly towards the main Hawaiian islands, leading to an area towering cumulus and isolated embedded cumulonimbus 200 miles north northeast of Hilo. These clouds are coincident with an apparent weak trough moving west at 25 mph in the low level trade wind flow. Maximum cloud tops are near 40000 feet.
A frontal cloud band shows up in the imagery embedded within a wide swath of layered clouds which covers the area north and west of a line from 30°N 170°W to 20°N 180°. Within 60 nm of the frontal boundary, a line of scattered thunderstorms with tops near 45000 feet, is embedded within the larger layered cloud band. The frontal boundary extends from 30°N 174°W to 24°N 180°, crossing the northwest Hawaiian islands near pearl and hermes atoll, and moving east at 20 mph.
Visible imagery shows the main Hawaiian islands under a typical morning trade wind cloud distribution. Broken low clouds are over the eastern half of Kauai, the Koolau mountains and windward coast of Oahu, and in small patches on the windward slopes of the mountains of Molokai, Maui and the Big Island. Scattered low clouds are crossing the windward coastal waters from east to west at nearly 25 mph.
BRENCHLEY
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