Hawaiian Islands Satellite Interpretation Message
Wed, 24 Nov 2010 18:00:00 -0600
Based on data through 2330 UTC November 24 2010.
An upper level ridge resides over the middle of the central Pacific region with water vapor imagery showing the ridge axis from southwest to northeast along a line from 15°N 170°W to 30°N 160°W. An upper trough is located to the northeast of the ridge and is affecting the area east of 162°W north of 22°N. This trough is moving southwest at 30 mph towards the main Hawaiian islands. An area of towering cumulus with tops to 25000 feet is being enhanced by this upper level trough and is located 140 miles north of Hilo. These clouds are along a weak trough moving west at 25 mph in the low level trade wind flow.
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 171°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 173°W to 23°N 180°, crossing the northwest Hawaiian islands between pearl and hermes atoll and lisianski. The front is moving east at 15 mph.
Visible imagery shows the main Hawaiian islands under a typical afternoon 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 leeward side of Oahu and windward side of Molokai and Lanai. Broken low clouds are also covering most of Maui and the lower slopes of the Big Island below 10000 feet. The only clear skies on the Big Island are from Kilauea Volcano to Punaluu and Pahala, and over the summits of Mauna Kea and Mauna Loa. Scattered to broken low clouds are crossing the windward coastal waters of the Big Island and Maui from east to west at nearly 25 mph. Few to scattered low clouds are found elsewhere in the coastal waters.
BRENCHLEY
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