SATELLITE DISCUSSION

Based on data through 1800 UTC May 04 2016.

Areas of broken to overcast low clouds are located over and to the east of the state, greatest in coverage east of 160°W. These clouds are composed primarily of stable closed cell cumulus elements north of 22°N, and primarily showery open cell cumulus elements south of 22°N. Cloud motions are to the west at 15 to 20 mph south of 24°N, and to the west and northwest at 10 to 15 mph north of 24°N.

Across the main Hawaiian islands, broken low clouds cover interior and northeast sections of Kauai. Broken to overcast low clouds cover the windward slopes of the Koolau range, with scattered to broken low clouds across the Waianae range. Broken to overcast low clouds also cover much of eastern Molokai and the west Maui mountains, with broken low clouds across the interior and northeast sections of Lanai. Broken to overcast low clouds also cover the windward slopes of Haleakala below 8000 ft. An area of low clouds also extends offshore to the west-southwest from Ulupalakua, covering much of Kahoolawe.

On the Big Island, broken to overcast low clouds cover the windward slopes of the Kohala range. Broken to overcast low and mid level clouds cover much of north and south Hilo and Puna districts below 9000 ft. Broken to overcast low clouds also cover Kau district, and are greatest from wood valley to Naalehu below 9000 ft, and west of Naalehu below 2000 ft. Scattered to broken low clouds cover portions of north and south Kona districts south of Keahole Point below 6000 ft.

A band of showery low clouds is located across the windward coastal waters, and extends between 60 and 80 miles offshore to the northeast of the islands. These clouds are greatest in coverage from Oahu through the Alenuihaha channel. The cloud band is not as solid in coverage near Kauai and east of the Big Island.

Northwest of the state, a cloud band associated with a cold front is up to 300 miles wide. The leading edge of the band extends from 30°N 171°W to 26°N 180°, or from 400 miles east-northeast of Midway atoll to 200 miles south-southwest of Midway. This band is composed primarily of broken to overcast cumulus clouds. A narrow band of towering cumulus clouds is located along the leading edge, with tops extending up to 18000 ft. The overall cloud band is moving to the east at 20 mph.

Hawaii Visible Satellite image for 1800 UTC

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