Friday, December 3, 2010

Hawaiian Islands Satellite Interpretation Message

Hawaiian Islands Satellite Interpretation Message
Fri, 03 Dec 2010 12:30:00 -0600

Based on data through 1800 UTC December 03 2010.

Note, there has been a nationwide data disruption, so we are operating with limited data.

The trailing end of a frontal band lies over the main Hawaiian islands. Showery, broken to overcast low clouds cover most areas of the islands from Niihau to Maui with scattered low clouds over some lower leeward areas. Showery overcast low clouds cover the windward side of the Big Island from Upolu Point to South Point these clouds extend upslope into the southeast side of the Humuula Saddle between Mauna Kea and Mauna Loa. Low clouds are isolated over the leeward side of the Big Island. There are thin broken high clouds over Kauai. These high clouds diminish farther south and east. Radars show scattered moderate showers over Kauai and the southeast side of the Big Island and isolated light showers elsewhere over the main Hawaiian islands.

The cloud band over the main Hawaiian islands is south of a line from 21°N 140°W to 19°N 150°W to just offshore of the islands from the Big Island to Oahu to Lihue where the band becomes obscured by higher clouds. The part of the band east of 151°W is 170 miles wide and contains showery overcast low clouds. The band tapers down to 100 miles wide near the Big Island. The part of the band over the main Hawaiian islands is partly broken up and the south edge of the band is discontinuous. There is a 90 mile wide zone of isolated to scattered low clouds just northeast of the frontal band. Low clouds near the main Hawaiian islands are moving from the east at 30 to 35 mph. There are scattered, rather stable appearing, low clouds immediately upstream of the main Hawaiian islands. Farther northeast of the islands is a large area of broken low clouds.

Water vapor imagery, which shows features mainly above 24000 ft, shows a long-wave trough aloft nearly stationary from 30°N 134°W to 12°N 138°W. A short-wave trough from 31°N 150°W to 30°N 160°W has been moving toward the south southeast at 30 mph. Another low aloft is centered at 19°N 179°W. There are overcast layered clouds and scattered cumulonimbus clouds north between 20°N and 30°N between 175°W and 178°E.

Central Pacific Infrared Satellite image for 1800 UTC


DONALDSON


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