Hawaiian Islands Satellite Interpretation Message
Tue, 07 Dec 2010 06:30:00 -0600
Based on data through 1200 UTC December 07 2010.
The upper level low north northeast of Oahu was near 42.7°N 146.0°W at 2 am, about 1610 miles away. Based on water vapor imagery animation, over the last couple of hours the low has begun to change direction from moving towards the southeast to a more easterly direction. Water vapor also shows an upper level low about 2250 miles northwest of Oahu near 38.7°N 169.5°W. While earlier a couple lines of thunderstorms were noted associated with the surface reflection of this system, as of 2 am, a single line of isolated thunderstorms is observed on infrared imagery. This line extend from 17°N 178°W to 31°N 164°W, with cloud tops reaching near 43 thousand feet.
The northern end of the thunderstorms mentioned above merge with a low cloud band that is associated with the system to the north northeast of Oahu. The leading edge of the cloud band is about 320 miles north of Oahu at 2 am. During the last couple of hours, the portion of the band north of the main Hawaiian islands has begun to slowly lift to the north.
An upper level ridge continues to bring overall dry conditions to the main Hawaiian islands overnight, however the amplitude of the ridge is beginning to decrease. Despite the overall drier air over the islands, a batch of low clouds is passing over Kauai from the south, spreading clouds across the garden isle. Just a few clouds are noted over the remaining islands.
Low clouds north of Kauai are now moving almost due north around 15 mph, while low clouds south of the Big Island are moving in from the east. Thin high clouds are noted, generally moving from west to east north of the islands.
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