Last Updated on Monday, 09 December 2013 05:50
Issued: Dec 09, 2013 8:30 AM HST
A shortwave upper level trough axis goes from 30°N 151°W to 18°N 160°W, moving east at 5 mph. Scattered cirrus clouds cover the eastern flank of the trough, all the way to around 142°W. Behind the trough to the northwest, a longwave upper trough covers the northwestern quadrant of the central Pacific basin. Layered clouds and embedded thunderstorms cover the area along an axis from 30°N 157°W to 26°N 180°E. This band of layered clouds is about 450 miles wide. Highest cloud tops reach up to 49 kft in height. A cold front is located underneath the base of the longwave trough which goes from 30°N 158°W to 26°N 180°E and is moving southeast at 10 mph.
An impulse of shortwave energy from the jet stream is feeding showers and occasional thunderstorms over the Kauai north coastal and offshore waters where cloud tops are reaching 31 kft. These showers and thunderstorms follow a 150 mile axis from 24°N 159°W to 19°N 165°W.
Across the main Hawaiian islands, broken cumulus and stratocumulus clouds cover the island of Kauai. Oahu is mostly sunny except for some cumulus clouds just off the windward shores. Molokai is mostly sunny, with a small patch of cloud build ups over the eastern mountains. Lanai has a few clouds across the southern portion of the island. On Maui, broken cloud cover the windward west Maui mountains, while the rest of the area is sunny. On the Big Island, broken cumulus clouds and scattered showers are impacting the lower eastern and southeastern slopes up to around 5 kft in elevation. The rest of the Big Island is sunny this morning.
Further upstream of the main Hawaiian islands, scattered to broken stratocumulus clouds cover much of the central Pacific basin east of of 155°W. These clouds are traveling towards the west at 10 to 15 mph.