Hawaiian Islands Satellite Interpretation Message
Thu, 18 Nov 2010 18:30:00 -0600
Based on data through 0000 UTC November 19 2010.
A series of upper level troughs are passing west to east through the northern portions of the region. One is located near 30°N 138°W, another is along 165°W between 25°N and 30°N. Between these two troughs is a weak north south upper ridge axis along 155°W between 10°N and 30°N. All of these upper level features are moving east at 20 to 30 mph.
Over the main Hawaiian islands, a line of thunderstorms with tops to 42000 feet is located over the northwest coastal waters of Kauai, about 30 miles northwest of the napali coast, is embedded within a larger area of layered clouds covering the coastal waters southwest through northwest through northeast of Kauai, and covering the northwest half of the island of Kauai. The thunderstorms are moving east at 15 to 20 mph. Additional towering cumulus, with tops to 20000 feet, are located over the Kauai channel within 20 miles west of oahu's northwest shore. An area of high clouds, a remnant of a previous thunderstorm, is covering eastern Oahu and the Kaiwi Channel and moving east. Broken low clouds are covering all of Oahu and the surrounding coastal waters, eastern Molokai, Lanai and the western island of Maui. Broken low clouds are found along the lower slopes of the Big Island below 9000 feet, with isolated cumulus tops to 14000 feet on the eastern upper slopes of Mauna Kea and Mauna Loa. Low cloud motion is generally to the north northwest at 10 mph east of Molokai and to the northeast at 10 to 15 mph from Molokai west.
A large area of layered clouds are located north of 23°N between 158°W and 162°W. This area is a result of two merging narrow cloud bands which continue south from this main area to 19°N 170°W and to 20°N 162°W respectively. Within this area of clouds are scattered embedded thunderstorms with tops to 48000 feet. A 75 to 100 mile wide frontal cloud band consisting of low topped cumulus and a few towering cumulus is stretching from 30°N 165°W to 22°N 180°, and is moving east at around 25 to 30 mph.
BRENCHLEY
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