Hawaiian Islands Satellite Interpretation Message
Tue, 19 Oct 2010 07:30:00 -0500
Based on data through 1200 UTC October 19 2010.
Broken to overcast middle clouds with tops near 14000 feet lingered over Oahu. These clouds were leftover from yesterday evening's heavy showers over the Koolau mountains. Few to scattered low clouds with tops ranging from 5000 to 8000 feet were detected over the remaining smaller islands.
Almost all of the clouds that blanketed the Big Island yesterday evening have vanished. The coastal waters east of the Big Island have broken shower-bearing low clouds however, that were moving slowly to the west southwest in light trade winds. There were even several cumulonimbus clouds, cb, along a line from about 100 miles northeast to 50 miles southeast of the Big Island. Low cloud tops were near 9000 feet while cb tops were near 40000 feet. The cb were also moving west southwest at 10 mph.
The cb mentioned above were along the northwestern edge of a large area of isolated cb located south and east of a line from 26°N 146°W to 50 miles southeast of the Big Island to 14°N 162°W. There were several large cb in the area with tops in excess of 55000 feet from 600 to 800 miles southeast of the Big Island.
North and northwest of the islands along a line from 30°N 156°W to 28°N 160°W to 26°N 169°W was an eastward moving cold front. The front consisted of a 100 mile wide band of broken to overcast cumulus, cu, and towering cumulus clouds, tcu. There were also several small cb with tops near 30000 feet along the front northeast of 28°N 160°W.
Water vapor imagery, which displays moisture above 24000 ft, showed a trough aloft from 30°N 143°W to over Maui to 20°N 170°W. The trough was moving to the southeast at 20 mph. Divergent flow aloft southeast of the trough was probably aiding and abetting the cb development southeast of the state.
CRAIG
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