Issued: Mar 11, 2014 2:30 PM HST
Cloud coverage over the islands has increased since this morning mainly due to land mass heating. Over Kauai patches of low clouds are covering most interior and western sections of the island with scattered low clouds over southern and eastern coastal areas. Over Oahu patches low clouds were banked up over the slopes and summits of both the Koolau and Waianae mountain ranges as well as over some interior areas. Patches of low clouds are covering the eastern third of Molokai while Lanai had just a few clouds over interior areas. Over Maui low clouds are banked up over most of the lower and middle Haleakala slopes as well as over the windward slopes of the west Maui mountains. Over the Big Island clouds have built up over the most of the lower and middle slopes of the island with the high summits and portions of the leeward Kohala coastline were mostly cloud free.
To the north of the area lies a weakening stationary front with its southern cloud edge about 200 miles to the north of Kauai. The front consists of mainly stable cumulus and stratocumulus cloud elements.
Water vapor imagery shows an upper level trough centered about 450 miles to the north of the Big Island. The trough is moving toward the east southeast at around 15 mph. Instability associated with the trough is causing a few thunderstorms to flare up on its eastern periphery. Cloud tops are estimated to be up to around 39000 feet.