Last Updated on Sunday, 09 March 2014 11:50
Issued: Mar 09, 2014 7:30 PM HST
Water vapor imagery shows an upper level trough with an axis from 29°N 144°W to 17°N 145°W moving east at 25 mph. A 450 mile wide band of cirrus clouds runs along the eastern flank just east of the trough axis.
An area of cirrus mixed with layered clouds is located north of 25°N between 148°W and 167°W, moving east at 30 mph. These clouds are resulting from shortwave energy at the base of a longwave trough far in the north central Pacific ocean. Partially underneath these clouds is a cold front which runs along an axis from 30°N 161°W to 24°N 172°W. Cloud associated with the front are primarily broken to overcast cumulus clouds. Isolated towering cumulus clouds with tops to 30 kft are located within the 175 mile wide cloud band.
At the low levels, broken to overcast stratus clouds are located to the north and west of the cold front. The rest of the central Pacific is covered to scattered to occasionally broken cumulus and stratocumulus clouds. The broken clouds are concentrated north of 22°N and east of 152°W, and also bounded between 19°N to 24°N and 160°W to 166°W.
Around the main Hawaiian islands, broken to overcast cumulus clouds with scattered showers cover the windward sides of all islands. Leeward areas of these islands also have scattered to broken cloud coverage. Leeward Big Island and Haleakala both have overcast cumulus clouds from afternoon sea breezes. The only exception is over the south Kohala area where there are some breaks in the cloud cover along the coast. Summits on the Big Island and Maui are also covered. Windward waters have broken low clouds, with mostly clear conditions across the the leeward waters.