Hawaiian Islands Satellite Interpretation Message
Thu, 09 Sep 2010 00:30:00 -0500
Based on data through 0500 UTC September 09 2010.
Water vapor imagery shows an upper level low centered near 24°N 176°W which is nearly stationary. A large area of scattered thunderstorms is within 250 miles either side of the low and is affecting the far northwestern Hawaiian island chain from Midway atoll to near laysan. Highest cloud tops are near 40000 feet in this area. An upper level jet to the south and southeast of the upper low is spreading copious amounts of high level moisture in the form of layered cirrus from the tropical convergence area near 10°N west of 170°W all the way north across johnson island and across the Hawaiian islands between Kauai and French Frigate Shoals. An upper ridge appears to dominate the area from the eastern main Hawaiian islands east to 140°W.
A pair of weak disturbances located about 550 to 800 miles south and southeast of the Big Island are triggering isolated thunderstorms with tops over 50000 feet, and extending west along 10°N from 160°W to the dateline. Elsewhere across the region, extensive low topped stratocumulus covers the area from 400 to 1000 miles northeast of the main Hawaiian islands, with more scattered low cloud decks within 400 miles of the main Hawaiian islands.
More specifically across the main islands, broken low clouds covers leeward Big Island coast and lower slopes from Waikoloa Village south to South Point, and on the windward side of the Big Island from Puna district across Hilo and north to Upolu Point. These clouds extend across the windward Big Island waters and into the southern portion of the Alenuihaha channel. Broken low clouds are found on the windward and leeward slopes of Haleakala and on the north side of Molokai. More extensive low clouds appears to be over the island of Kauai, although high clouds are obscuring the satellite view of the lower cloud decks. Cloud tops are near 9000 feet and are moving southwest at 15 to 20 mph.
BRENCHLEY
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