Hawaiian Islands Satellite Interpretation Message

Hawaiian Islands Satellite Interpretation Message
Mon, 01 Nov 2010 13:30:00 -0500

Based on data through 1800 UTC November 1 2010.

The most noticeable cloud feature in the central north Pacific is a 90 to 120 mile wide band of broken to overcast low clouds north of a line from 35°N 140°W to 29°N 160°W to 26°N 180°W. This cloud band marks a frontal boundary associated with a deep low in the gulf of Alaska. The band is moving toward the southeast slowly and its leading edge is about 460 miles northwest of the island of Kauai within the main Hawaiian island chain.

Water vapor shows a series of upper troughs and ridges between 10°N and 30°N west of the islands, and an upper low near 21°N 140°W, east of the islands. A 120 mile wide ragged arc of broken high clouds lies north and west of a line from 26°N 155°W to 23°N 164°W to 17°N 170°W, riding along the northwestern flank of an upper ridge across the islands.

Scattered cumulonimbus, CB, remain active between 08°N and 12°N west of 156°W. The northern edge of associated high clouds reaches as far north as 15°N between 165°W and 175°W. Additional isolated CB lie within a 60 to 90 mile wide arc from 12°N 151°W to 08°N 146°W to 09°N 140°W.

First visible imagery shows an area of ragged broken to overcast low clouds across windward Hawaiian waters, affecting windward shores and slopes of the Big Island, Maui, Molokai, Oahu and Kauai. On Oahu, these broken low clouds extend west across the entire island. Broken low clouds are limited to windward slopes of Kauai and the eastern two-thirds of Molokai. Broken to overcast low clouds cover windward and south-facing Haleakala slopes on Maui as well as windward west slopes. Broken low clouds cover sections of mauka Lanai. On the Big Island, broken to overcast low clouds cover windward slopes south of Laupahoehoe, wrapping southwest across Puna and Kau districts. All leeward areas and the interior have scattered low clouds to clear skies at this hour. Satellite loop shows low clouds are moving across Hawaiian waters generally toward the west at 10 to 15 mph.

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POWELL

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