Hawaiian Islands Satellite Interpretation Message
Tue, 30 Nov 2010 18:30:00 -0600
Based on data through 0000 UTC December 01 2010.
Water vapor loop shows an upper level low centered at 24°N 177°W, or 1100 miles west-northwest of Kauai, moving northwest at 15 mph. Scattered towering cumulus clouds are swirling around a 200 mile radius around the center across the eastern flank. This low is reflected at the surface as a trough with an axis from 29°N 177°W to 11°N 177°E. This entire system is producing a large area of dense layered clouds with isolated embedded cumulonimbus clouds with tops to 49 kft. This convective area is bounded between 10°N to 31°N and 166°W to 174°W. East of the 166°W longitude line, bands of layered high clouds extend eastward from thunderstorm blow off. These clouds are periodically passing over the main Hawaiian islands on top of a weak upper ridge centered around 150 miles west of Kauai this afternoon.
Two distinct high cloud bands run parallel just to the north and south of the main Hawaiian islands this afternoon. With breaks in the high clouds, the lower clouds can be seen on visible satellite. Scattered open-celled cumulus clouds cover the ocean waters upstream of the islands and these low clouds extend to heights of around 7 kft according to soundings at Hilo and Lihue this afternoon. These clouds are traveling to the west at 15 mph with the trade wind flow. The islands break up the scattered cumulus clouds to 80 miles southwest of the state. The only clouds observed in this area are plume clouds leeward of Molokai, Oahu and Kauai. On land, broken cumulus clouds are banked against the mountains and windward areas from Kauai through Lanai. Maui has broken clouds over west Maui and the lower slopes of Haleakala up to 8 kft in height. The Big Island has scattered to broken clouds over almost the entire island interior while the coastlines have sunny skies around most of the island. One of the dense high cloud bands cover the southern portion of the Big Island.
North of the state, a 150 mile wide band of overcast stratus clouds mark a front along an axis from 39°N 130°W to 31°N 149°W to 32°N 165°W.
Elsewhere, scattered thunderstorms cover the ITCZ across the central Pacific basin mostly between 06°N to 11°N and 151°W to 162°W with storm tops extending to 49 kft in height.
FOSTER
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