Hawaiian Islands Satellite Interpretation Message
Sat, 30 Oct 2010 13:30:00 -0500
Based on data through 1800 UTC October 30 2010.
Water vapor imagery shows an upper level low near 21°N 171°W, moving to the west at 10 mph. This low is about 800 miles west of Honolulu, or 650 miles southeast of Midway atoll. An area of cumulonimbus clouds is located south and west of the upper low, generally between 18°N and 20°N W of 172°W. Individual convective cells are short lived, but they are moving to the west at 15 mph. Most cloud tops extend up to 35000 ft, although tops associated with the strongest updrafts extend up to 44000 ft. Isolated towering cumulus clouds are also located near the upper low along a dissipating remnant frontal cloud band. These clouds extend up to 25000 ft, and are located roughly along a line from 21°N 165°W to 22°N 180°.
South of the upper low, an area of layered upper level clouds is associated with convection in the intertropical convergence zone. These clouds are located generally south of 17°N and west of 160°W. Distinct cloud motions can be seen at two different levels. The higher level cirrus clouds are moving to the east at 70 mph. Below these clouds, a thicker layer of cirrostratus and cirrocumulus clouds are moving to the north and northwest at 20 mph.
Across the main Hawaiian islands, broken to overcast low clouds cover the interior and windward sections of Kauai. Broken low clouds cover the Koolau range on Oahu, with scattered low clouds across the Waianae range. Broken to overcast low clouds cover eastern Molokai, with broken mid-level clouds across western Molokai and the Kaiwi Channel between Oahu and Molokai. Scattered to broken low clouds are located over mauka Lanai. Broken to overcast low clouds cover the west Maui mountains, and lower slopes of Haleakala from Haiku to Hana to kaupo below 6000 ft. These clouds also extend 15 miles offshore to the north and northeast of Maui.
On the Big Island, broken to overcast low clouds cover the slopes of the Kohala range, and also extend across Hamakua district below 5000 ft. Broken to overcast low clouds also cover coastal sections of north Hilo district below 5000 ft, as well as much of south Hilo and Puna districts, but also extend up to 9000 ft through the saddle. Broken to overcast low clouds cover portions of Kau district below 7000 ft. Scattered to broken low clouds are also located over the Kona coast from Keahole Point to Captain Cook.
Beyond the state, low clouds are embedded in the trade wind flow south of a surface ridge near 30°N. A remnant frontal cloud band is located generally east to west along 26°N. This band is about 75 miles wide, and is slowly moving to the south. South of this band, clouds are composed primarily of showery open cell cumulus elements. These clouds are moving to the west southwest at 15 to 20 mph.
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