Issued: Nov 26, 2014 8:30 AM HST
Based on data through 8:00 am Nov 26 2014 HST
A band of broken to overcast cumulus clouds is located east of a line from 30°N 141°W to 16°N 160°W. This band is up to 200 miles wide north of 20°N, and becomes more ragged and smaller south of 20°N. Isolated towering cumulus clouds with tops to 10000 ft are embedded within the band north of 20°N. The cloud band is associated with a dissipating front, and is nearly stationary.
North and west of this cloud band, an area of broken to overcast cumulus clouds is located generally east of 160°W and south of 24°N west of 160°W. These clouds are composed primarily of showery open cell cumulus elements near the frontal band mentioned above, then transition to more stable closed cell cumulus elements west of 160°W. Based on low cloud motions, a surface ridge is located near 28°N. North of the ridge, clouds are moving to the east and southeast at 10 to 15 mph. South of the ridge, clouds are moving to the southwest at 15 to 25 mph.
Across the main Hawaiian islands, broken to overcast low clouds cover much of Kauai and Niihau and adjacent coastal waters. Broken to overcast low clouds also cover the windward slopes of the Koolau range on Oahu, and extend 40 miles offshore to the northeast. Broken clouds also cover the Ewa plain, and extend 50 miles offshore to the southwest in a band about 10 miles wide. Broken to overcast low clouds cover northeast Molokai from kalaupapa to pukoo, and extend 50 miles offshore to the northeast. Broken low clouds cover northeast sections of Lanai. Broken to overcast low clouds cover the interior and northeast sections of the west Maui mountains, .and windward slopes of Haleakala from Haiku to Hana to Kipahulu below 5000 ft. These clouds also extend over 100 miles offshore to the northeast and east, and cover the Alenuihaha channel as well.
On the Big Island, broken to overcast low clouds cover windward slopes of the Kohala range, and most of the windward coast from Hamakua to Puna districts below 7000 ft. These clouds extend 70 miles offshore to the northeast. A band of stable low clouds is also located offshore to the southeast of the Big Island, between 20 and 100 miles, until it merges with the showery frontal cloud band mentioned above.
To the northwest of the state, the leading edge of a cloud band associated with a cold front extends from 30°N 157°W to 28°N 166°W to 30°N 175°W. This band is about 150 miles wide, and is moving to the southeast at 20 mph. The band is composed primarily of showery cumulus elements, with embedded towering cumulus elements extending up to 10000 ft.
Far to the northwest, water vapor imagery shows an upper level trough from 30°N 175°E to 25°N 174°E, or about 400 miles west of Midway atoll. This trough is moving to the east at 20 mph. Broken layered clouds with isolated embedded cumulonimbus clouds are located east of the trough, and are located generally north of 26°N and west of 178°W. Addition cirrus and cirrostratus clouds extend farther out from the trough, and are located north of 24°N and west of 173°W. These high clouds are moving to the east at 40 to 60 mph.