Hawaiian Islands Satellite Interpretation Message

Hawaiian Islands Satellite Interpretation Message
Wed, 10 Nov 2010 06:30:00 -0600

Based on data through 1200 UTC November 10 2010.

Water vapor imagery shows an upper level trough located 700 miles east southeast of Hilo and another upper trough 450 miles east of Midway atoll. Both troughs are moving to the east northeast about 25 mph. An upper ridge is positioned over the main Hawaiian islands and extends northeastward over 1000 miles. The subtropical upper level jet is laying west to east across the region south of 15°N. Some high clouds are being pulled northward between 170°W and 160°W from the tropics towards the mid latitude trough over the northwestern Hawaiian islands.

A large area of layered clouds extends in a 350 mile wide band from 21°N 173°W to 30°N 163°W. Within this broad area of clouds, isolated thunderstorms and towering cumulus with tops up to 42000 feet are located within 60 miles either side of a line from 23°N 172°W to 30°N 160°W, crossing about 450 miles northwest of Kauai at its closest point. This larger area of clouds with embedded thunderstorms is moving slowly east at about 10 mph. A cloud deck consisting of mainly high layered cirrus is located south of 18°N between 160°W and 170°W, as near as 250 miles southwest of Honolulu, with more thin wispy cirrus clouds in patches over the western half of the main Hawaiian islands. Isolated thunderstorms with tops to 50000 feet are located along the southern boundary of the area between 12°N and 13°N east of 165°W. Elsewhere across the central Pacific, scattered to broken low topped stratocumulus are the rule.

For the main Hawaiian islands, broken low clouds are over south and east Kauai, the south shore of Oahu and extending along the Koolau mountains and across to Kaneohe bay, the eastern half of Molokai, the windward Maui coast from Hana to oheo, and the windward Big Island coast from cape kumakahi to Laupahoehoe. Broken low cloud plumes are also drifting over the Kaiwi Channel and the windward Maui and Big Island waters. Low cloud tops are estimated at 7500 to 9000 feet throughout the islands. The low cloud movement is to the west northwest at near 15 mph in areas free from the effects of island terrain.

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BRENCHLEY

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