Hawaiian Islands Satellite Interpretation Message
Wed, 24 Nov 2010 23:30:00 -0600
Based on data through 0500 UTC November 25 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 17°N 168°W to 33°N 157°W. East of the ridge, a trough is moving southwest at 30 mph towards the main Hawaiian islands.
A frontal cloud band shows up in the infrared imagery embedded within a wide swath of layered clouds which covers the area north and west of a line from 30°N 169°W to 19°N 180°. Within 75 miles of the frontal boundary, a line of scattered thunderstorms with tops near 45 kft is embedded within the larger layered cloud band. The frontal boundary extends from 30°N 171°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.
Last visible imagery shows the main Hawaiian islands under a typical trade wind cloud distribution. Broken low clouds dominate across windward and mauka sides of the islands while a few clouds cover leeward sides. Leeward Big Island being the exception with a bit more low clouds built up along the leeward slopes. Inversion levels are a bit high this evening with the upper trough nearby to the northeast. Clouds are reaching the summit on Haleakala while some clearing is observed over the Mauna Kea and Mauna Loa peaks. 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.
FOSTER
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