Hawaiian Islands Satellite Interpretation Message
Sun, 26 Sep 2010 13:30:00 -0500
Based on data through 1800 UTC September 26 2010.
There has been little change in cloud cover around the main Hawaiian islands since late last night.
Clouds are isolated over most areas of Kauai county and Oahu with scattered to broken low clouds over the windward slopes of Kauai and over the Koolau mountains on Oahu. Broken low clouds cover Molokai and Lanai. There are small patches of broken low clouds over the slopes of windward west Maui and over east Maui above Hana. Clouds are isolated elsewhere over Maui. Overcast low clouds cover most of the east side of the Big Island from Upolu Point to Hilo to south cape except for scattered clouds between Waipio valley and Ookala and isolated clouds near Cape Kumukahi. There is also an area of overcast low clouds along the west side of the Big Island from Kealakekua to Keahole Point. The low clouds on the east side of the Big Island extend upslope into the middle of the Humuula Saddle, to about 6000 feet of elevation. Skies are clear over the rest of the Big Island.
Low clouds near the main Hawaiian islands are moving from the east at 15 mph. There are broken low clouds upstream of the Big Island, Maui and Oahu, with scattered low clouds upstream of Molokai and Kauai. The clouds upstream of the islands are part of a large area east of a line from 14°N 140°W to the windward sides of the islands to 29°N 140°W. These clouds are mostly stable stratocumulus with isolated moderate cumulus clouds mixed in. Radars show isolated light showers upstream of the Big Island, Maui and Oahu.
A 120 to 200 mile wide band of broken to overcast low clouds, the remnant of a front is north of a line from 30°N 150°W to 180 miles north northwest of Kauai to 23°N 167°W to 26°N 180°W. The part of the band northeast of the islands has been nearly stationary over the past several hours while the part west of the islands has been moving towards the west southwest at 15 mph.
A 350 mile wide band of broken layered clouds, scattered towering cumulus clouds and isolated to scattered cumulonimbus clouds, cb, along the intertropical convergence zone is south of a line from 13°N 140°W to 13°N 167°W to 10°N 180°W. A 200 mile diameter cluster of cb associated with a small tropical disturbance is centered near 09°N 172°W. The disturbance has been moving toward the southwest around 10 mph.
Water vapor imagery, which shows features mainly above 24000 ft, shows a low aloft 180 miles southwest of Honolulu near 19°N 159°W. There are no high clouds around the low so the low can be seen on water vapor imagery but not on visible or window IR imagery.
DONALDSON
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