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Satellite Interpretation Message

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Issued: Jan 27, 2015 2:30 AM HST


Based on data through 2:00 am Jan 27 2015 HST


Infrared satellite imagery of the past 8 hours shows broken to overcast stratocumulus clouds covering the windward waters of main Hawaiian islands. This large cloud field extended north to 30°N, covering the area between 150°W and 160°W. The southern edge of this cloud field is grazing the windward areas of the all the islands from time to time. The Kona coast still has some locally overcast skies this hour, and there are a couple of on going showers between Kailua-Kona and honauhau. Otherwise fair skies ruled the rest of the area this early Tuesday morning. This included the entire stretch of the leeward waters out to 150 miles from off the Kona coast to southwest of Niihau.

The low level trade winds have shifted considerable during the past 24 hours where the flow has become slightly south of east over the windward waters west of Maui and east around the waters of the Big Island. The low clouds are approaching windward Big Island at a speed of 15 mph, while the clouds off the windward coast of Oahu are traveling up to 25 mph.

A front 480 miles northwest of Kauai is moving southeast at 15 mph. The front has the following coordinates of 30°N 162°W 26°N 170°W and 23°N 180°W. The front has a cloud band 140 mile wide. Showery type cumulus clouds are noted within 350 nm southeast of the front.

The remnants of the front that moved through the islands over the weekend is still recognizable south of the islands, as a 160 miles wide band, 80 miles either side of a line stretching from 19°N 143°W to 17°N 150°W to 16°N 160°W to 19°N 167°W. The band is sagging to the south while moving westward.

Water vapor imagery shows a very dry and stable air mass with a west to northwest wind flow high above the islands.

The tropics south of the Hawaiian islands are free of any deep convection this morning.

Hawaii Infrared Satellite image for 1200 UTC

Central Pacific Infrared Satellite image for 1200 UTC


LAU