Issued: Feb 13, 2016 2:30 PM HST
Cloud cover remains sparse over the main Hawaiian islands. Since this morning, cloud cover has decreased over windward areas and increased over leeward areas.
Imagery through 130 pm shows isolated to scattered clouds over most areas of the islands with patchy, scattered to broken low clouds over interior areas over the smaller islands and over the lower slopes of the Big Island of Hawaii. The clouds on the Big Island extend up to around 5500 feet oe elevation with clear skies above that.
Low cloud motion east of the Big Island is from slightly south of east at 20 to 25 mph, veering to east southeast at 20 mph near Oahu and Kauai. There are showery scattered to broken low clouds immediately upstream to the east of the Big Island and scattered low clouds upstream of the rest of the islands.
The clouds around the main Hawaiian islands are mostly stable stratocumulus with a few small showery cumulus clouds mixed in. Radars show only isolated light showers around the islands.
A frontal cloud band is northwest of a line from 30°N 162°W to 23°N 170°W to 17°N 180°W. The part of the band near 30°N is 240 miles wide, narrowing to 200 miles wide near the dateline. The band contains overcast layered clouds with cloud tops extending up to 28000 ft near 30°N.
Water vapor imagery, which shows features mainly above 24000 ft, shows a ridge aloft extending from 30°N 148°W through and anticyclone aloft about 600 miles southwest of the Big Island to 10°N 172°W. A broad trough aloft extends southwest from near 30°N 178°W.