Hawaiian Islands Satellite Interpretation Message
Sat, 25 Dec 2010 23:30:00 -0600
Based on data through 0500 UTC December 26 2010.
Water vapor imagery shows a broad upper level trough west of the state. A compact upper low is located north of the area near 37°N 172°W. This low is moving to the east at 15 mph. A digging shortwave trough is located west of the area near 29°N 176°E. This trough is moving to the southeast at 25 to 30 mph. A surface cold front is associated with this upper level trough, and a band of broken to overcast layered clouds is associated with this front. The frontal band is up to 200 miles wide, and the western edge extends from 30°N 173°W to 27°N 180°, or from 300 miles east northeast of Midway atoll to 200 miles southwest of Midway. The band is moving to the east at 20 mph. Isolated cumulonimbus clouds are embedded within the layered clouds. Cloud tops extend up to 38000 ft.
Another shortwave trough is located near 23°N 172°W, or about 500 miles southeast of Midway atoll. This trough is moving to the east northeast at 20 to 25 mph. An area of broken to overcast layered clouds is located generally north of 22°N between 160°W and 166°W. Isolated cumulonimbus clouds are embedded within these layered clouds, with tops extending up to 40000 ft. Broken to overcast cirrus and cirrostratus clouds extend farther south and west, south to 20°N and west to 170°W. These high clouds are moving to the northeast at 40 to 50 mph.
A band of broken cumulus and towering cumulus clouds extends farther to the west southwest, and is associated with a weakening stationary front. This band is between 100 to 200 miles wide, and is located south of a line from 24°N 166°W to 21°N 180°. Isolated cumulonimbus clouds are embedded within this frontal band as well. Cloud tops extend up to 40000 ft. Additional cumulonimbus clouds are located farther to the east as well, generally north of a line from 22°N 160°W to 27°N 154°W. Cloud tops with these convective cells extend up to 45000 ft.
To the southeast of the state, an upper level low near 18°N 155°W, or about 100 miles south southeast of South Point on the Big Island. This low is moving to the north northeast at 20 mph. An area of broken middle and high level clouds are located to the east of this low, generally between 145°W and 154°W south of 19°N. These thicker layered clouds are moving to the northeast at 20 to 30 mph. Additional cirrus clouds are located farther north, extending up to 22°N. These thinner high clouds are moving to the northeast and east at 40 to 50 mph.
Across the main Hawaiian islands, an area of showery cumulus and towering cumulus clouds is located across Kauai and Oahu and surrounding coastal waters. Isolated cumulonimbus clouds are located near and to the west of Kauai. These convective clouds are moving to the northeast at 15 mph. Cumulonimbus cloud tops extend up to 40000 ft. Otherwise, towering cumulus cloud tops generally extend up to 25000 ft. Across Maui county, broken low clouds cover the interior and northern coastal sections of Molokai, and the interior of Lanai. Broken low clouds also cover the interior of the west Maui mountains, and lower slopes of Haleakala. These clouds also extend offshore to the north of east Maui.
On the Big Island, broken low clouds cover the lower slopes and coastal sections of north and south Kona districts, as well as windward sections from north Kohala to Hamakua districts. These clouds extend offshore to the north and northwest. An area of cirrus and cirrostratus clouds is located just offshore of Kau and Puna districts. This area of high clouds is moving to the northwest at 10 mph, and is beginning to cover eastern sections of the Big Island.
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