Hawaiian Islands Satellite Interpretation Message
Sun, 26 Sep 2010 07:30:00 -0500
Based on data through 1200 UTC September 26 2010.
Satellite loop shows the subtropical ridge has been pushed south over the past 24 to 36 hours such that the western limb of the ridge lies just east of the island of Kauai in main Hawaiian island chain this morning. Flow at low cloud level is sluggish across the islands, mainly toward the west at 10 mph or less. Skies across the leeward half of Kauai and all of Oahu are clear or have scattered low clouds, with scattered to patchy broken low clouds noted across the windward half of Kauai. Molokai has broken low clouds across its eastern third. Maui and Lanai appear to have scattered low clouds to clear skies. Scattered to broken low clouds dot skies across windward Big Island slopes south of Laupahoehoe, wrapping southwest along Puna slopes toward Volcano. The leeward slopes of the Big Island have cleared significantly since last evening, with scattered low clouds to clear skies noted. The Big Island plume extends west from a point just offshore from Milolii.
A ragged 120 mile wide band of broken low clouds extends north and west of a line from 35°N 140°W to 30°N 150°W to 23°N 165°W to 26°N 173°W. Marking an old frontal boundary, this cloud band is moving toward the east slowly near 140°W but is nearly stationary elsewhere. Broken stable low clouds lie north of a line from 16°N 140°W to 15°N 152°W to just east of the Big Island, and south of a line from 28°N 140°W to 24°N 151°W to just east of the Big Island. Elements of this cloud area break away from time to time and affect windward portions of Maui and the Big Island, then slip west of the island chain within the Big Island plume.
To the south, broken layered clouds and isolated cumulonimbus, cb, lie within a ragged 120 mile wide band north of a line from 05°N 140°W to 03°N 165°W to 06°N 175°W to 10°N 180°W. A weak tropical disturbance near 10°N 171°W has isolated cb within 90 miles north through west of center. This disturbance is moving toward the southwest at about 20 mph.
POWELL
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