Hawaiian Islands Satellite Interpretation Message
Sat, 29 Jan 2011 12:30:00 -0600
Based on data through 1800 UTC January 29 2011.
A cloud band associated with a cold front is located northwest of the state. The leading edge of the main cloud band extends from 30°N 166°W to 25°N 172°W to 21°N 180°, or from 700 miles east northeast of Midway atoll to 400 miles southeast of Midway to 500 miles south southwest of Midway. The band is up to 300 miles wide, and is composed of overcast low and middle level layered clouds that extend up to 15000 ft. Patchy high clouds are also aligned with the lower cloud band, and are located mainly north of 28°N. The main cloud band is moving to the east and southeast at 20 mph. The high clouds are moving to the east northeast at 80 to 100 mph. An additional cloud band is located ahead of the main band, and is located generally west of 165°W and north of 24°N. These clouds are composed of broken to overcast cumulus and towering cumulus elements.
Water vapor imagery shows an upper level low near 14°N 141°W. This low is moving to the northeast at 20 mph. Isolated cumulonimbus clouds are located to the northwest of the low, generally within 50 miles of a line from 15°N 144°W to 17°N 140°W. These convective clouds are nearly stationary. Cloud tops extend up to 40000 ft. Broken to overcast middle and high level clouds are located between 13°N and 18°N. These clouds are moving to the south at 10 to 15 mph.
Areas of broken to overcast low clouds are located across much of the central Pacific, with the greatest cloud coverage located within 300 miles of a line from 23°N 140°W to 15°N 170°W. These clouds are composed primarily of stable stratocumulus and closed cell cumulus elements to the northeast of the main Hawaiian islands. Near and to the west of the main Hawaiian islands, clouds are composed of a mix of stable closed cell cumulus and showery open cell cumulus elements. Cloud motion is generally to the east at 15 to 20 mph. North of the state, cloud motion is more toward the northwest.
Across the main Hawaiian islands, broken low clouds cover Kauai and Niihau, and extend offshore across the Kauai channel. Broken low clouds cover the slopes of the Koolau range on Oahu, and also windward coastal sections southeast of Kaneohe bay. These clouds also extend offshore across the Kaiwi Channel. Broken low clouds cover eastern Molokai east of kalaupapa. Scattered to broken low clouds are located over the interior of the west Maui mountains. Broken to overcast low clouds cover the windward slopes of Haleakala from Haiku to keanae below 2000 ft and from nahiku to kaupo below 7000 ft. These clouds also extend 50 miles offshore to the northeast of Maui.
On the Big Island, broken low clouds cover eastern portions of south Hilo and Puna districts. These clouds are part of a larger band that extends over 100 miles upstream to the east and northeast. Elsewhere on the Big Island, thinning middle level clouds are located over north and south Kona districts between Keahole Point and Honaunau. Another thin layer of clouds is located over portions of north Hilo and Hamakua districts, in the saddle between Mauna Kea and Mauna Loa. These clouds are located generally between 6000 ft and 8000 ft.
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