Hawaiian Islands Satellite Interpretation Message
Sat, 11 Sep 2010 00:40:00 -0500
Based on data through 0500 UTC September 11 2010.
An upper level trough is nearly stationary around 700 miles northwest of Kauai this evening. The trough is connected to an upper lows located at 38°N 150°W. This put the main Hawaiian islands under a southwesterly wind flow, which also happen to contain cirrus clouds. The cirrus is affecting mainly Kauai county. The cirrus is debris from thunderstorm activity occurring around the marshall islands located 1700 miles southwest of Kauai.
As for the main Hawaiian islands, low cloud coverage is basically scattered to locally broken. The broken condition pertains to mainly Kauai county and the north and east facing sides of the Big Island. The clouds over Kauai county are departing the area, and is associated with an area of clouds and showers that affected Oahu this morning.
The clouds over the windward side of the Big Island are from the tail end of a north to south oriented band of clouds. The band settled onshore earlier this afternoon and is making its way westward toward Maui at 12 mph. The band extends northward for 250 miles from the Big Island, and has become less organized during the past few hours. Some of the fractured elements have surged ahead of the band into the Hana area of Maui with some clouds and light showers. Weather radar not only confirms this but is only picking up spotty light showers elsewhere with this band.
Satellite imagery shows another area of shower bearing clouds a few miles following this band.
On the other hand, the cloud cover over the Kona side of the Big Island is mainly scattered while mostly clear skies prevailed across Oahu Molokai Lanai and west Maui.
Deep convection associated with the disturbed area collapsed this afternoon while passing south of the Big Island. Only an isolated moderate thunderstorm is noted this past hour near 09°N 158.8°W or 715 miles south southwest of South Point Big Island. The largest concentration of moderate thunderstorms is within 80 miles either side of a line from 07°N 163°W to 11°N 169°W to 09°N 178°W.
LAU
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