Hawaiian Islands Satellite Interpretation Message
Fri, 29 Oct 2010 13:30:00 -0500
Based on data through 1800 UTC October 29 2010.
Water vapor imagery shows an upper level low near 20°N 169°W, or about 700 miles west of Honolulu. This low is moving to the west at 10 to 15 mph. Another shortwave is located near 24°N 179°E, moving to the southwest at 20 mph. An area of convection is located on the south side of the low, generally from 18°N to 20°N between 166°W and 171°W. Cloud tops with the convection in this area extend up to 32000 ft.
An area of cirrus and cirrocumulus clouds is located generally south of 15°N west of 155°W, and are associated with convection in the intertropical convergence zone. However, a narrow band of high clouds extends farther northeast. This band is 100 miles wide, and the northern edge extends from 16°N 161°W to 19°N 150°W, passing just south of the Big Island. These clouds are moving to the east northeast at 50 mph.
At lower levels, a remnant cloud band from a dissipated front is embedded in the trade wind flow. The northern edge of the cloud band extends from 24°N 140°W to 23°N 160°W to 24°N 174°W. These clouds cover portions of Kauai and Oahu, and are located just offshore to the north and northeast of Molokai and Maui. This band is composed primarily of showery cumulus clouds. However, west of 165°W, or near the upper low mentioned above, the band is composed of towering cumulus and cumulonimbus clouds. Cloud tops in this area extend up to 37000 ft. Clouds within the band are moving to the west southwest at 20 to 25 mph. North of the band, clouds are moving to the south southwest at 15 to 20 mph.
Across the main Hawaiian islands, broken to overcast low clouds cover the interior and eastern sections of Kauai. Broken to overcast low clouds cover windward and central sections of Oahu, with scattered to broken low clouds across leeward areas. Broken low clouds cover eastern Molokai, and northern sections of Lanai. Broken low clouds also cover the interior sections of the west Maui mountains, and windward slopes of Haleakala from Hana to Kipahulu.
On the Big Island, scattered to broken low clouds cover the windward slopes of the Kohala range. Scattered to broken low clouds are also located over the Kona coast from keahole to Captain Cook. Broken clouds cover the middle slopes of north and south Hilo districts between 4000 ft and 8000 ft. Scattered to broken cirrus elements are located over southern Kau and Puna districts. These high clouds are part of the larger band of high clouds described above.
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