Saturday, January 8, 2011

Hawaiian Islands Satellite Interpretation Message

Hawaiian Islands Satellite Interpretation Message
Sat, 08 Jan 2011 12:30:00 -0600

Based on data through 1800 UTC January 08 2011.

Regional infrared and water vapor imagery reveals a vertically stacked, nearly stationary, low pressure area centered about 575 miles north-northeast of Oahu this morning. A weakly defined front associated with the low is producing clouds and showers along a diffuse east-west line that extends across Kauai and adjacent waters. Scattered to broken low clouds, with embedded showers, are also over the other islands and adjacent waters, with shower motion toward the east and southeast, at speeds near 24 mph.

East of the islands, primarily between 150°W and 140°W, an area of layered clouds and deep convection is located between 15°N and 30°N, where moisture associated with a different front is being enhanced by a stronger shortwave that traversed the islands yesterday. Both this shortwave and the weaker one supporting the front near Kauai are rotating around the deep-layered low centered to the north-northeast of the islands.

Skies over the islands range from cloudy and showery to nearly clear, with the prevailing west-northwest flow stacking the clouds and showers along what would normally be the leeward side of the islands. Areas that are under nearly clear skies include the southeast half of Kauai, the southeastern two-thirds of Oahu, west Molokai, east Maui, and most of the Big Island, where the snow covered summits are clearly seen on the initial visible images of the day. Cloudy areas include northwest Kauai, the north shore of Oahu, the Pailolo channel, and adjacent land areas of windward Molokai and west Maui.

Central Pacific Infrared Satellite image for 1800 UTC


BIRCHARD


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