Hawaiian Islands Satellite Interpretation Message
Thu, 04 Nov 2010 19:30:00 -0500
Based on data through 0000 UTC November 05 2010.
A 150 to 175 mile wide band of broken stratus and stratocumulus clouds covers from Molokai to the Big Island early this afternoon. These clouds are associated with a dissipated front which are now overrun by east-northeasterly trade winds from building high pressure north of the main Hawaiian islands. The leading edge of this cloud band extends from 40°N 128°W to 26°N 138°W to 17°N 163°W. The front is active north of 28°N, moving east at 20 mph. South of this latitude the cloud band is moving south to southwest aided by the subtropical high building in behind the front. This high which is centered at 33°N 160°W is driving east to northeast winds across most of the central Pacific basin with cloud motions following suit.
Directly north and west of the remnant frontal cloud band, broken open-celled stratocumulus and cumulus clouds cover a fairly large area. They extending from the back of the mentioned stratus cloud band to the boundary of another dissipated front that is located along a line from 33°N 154°W to 28°N 160°W to 27°N 170°W.
Around the main Hawaiian islands this afternoon, windward waters of Molokai through the Big Island are covered by the broken stratus and stratocumulus band of clouds. Clouds over the channels and leeward waters have a more disorganized broken cloud pattern with plume clouds coming off Maui and the Big Island. Scattered cumulus cover the waters around Kauai and Oahu. Clouds around the state are moving to the west-southwest at 20 to 25 mph. Over land, broken to overcast cloud buildups are seen across windward Kauai and the Waianae and Koolau ranges on Oahu. Small breaks in the clouds are occurring mainly on the leeward and south shore areas of Kauai and Oahu. Molokai and Lanai have overcast clouds on the windward sides and scattered clouds across leeward sides. Maui has overcast clouds over all windward sides up to 9 kft in elevation on Haleakala. Broken clouds cover the remainder of Maui. The Big Island has overcast clouds over windward sides of the island up to 8 kft in elevation. Overcast cloud buildups are also seen along the Kona coast and from South Point to Apua Point. A few clouds are observed over the Kohala area and near the peaks.
Elsewhere, water vapor imagery shows a weakening upper level trough hovering near 21°N 179°E. It's currently generating some clusters and strands of broken cirrus clouds from 15°N to 28°N and 170°W to 175°E.
Far south of the Hawaiian islands, a 230 mile wide line of scattered showers extends along a line from 07°N 177°W to 16°N 131°W. Thunderstorm tops reach near 49 kft in this area.
FOSTER
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