Hawaiian Islands Satellite Interpretation Message
Thu, 06 Jan 2011 12:30:00 -0600
Based on data through 1800 UTC January 06 2011.
A cold front continued to make steady progress down through the island chain this Thursday morning. The front reached Kauai last evening and Oahu around midnight. At 8 am, the leading edge of the front had just made its way into the Alenuihaha channel after passing through Maui. The front was moving southeast at 12 miles an hour.
The leading edge of the roughly 110 miles wide frontal band front stretched from 30°N 147°W to 24°N 150°W through the Alenuihaha channel to 20°N 157°W then west to 19.5°N 170°W. Isolated thunderstorms were forming within the more active part of the front north of 25 north latitude. Highest cloud tops around the thunderstorms were near 42000 feet.
The frontal band was lying across Maui county and Oahu. The clouds along the leading edge were showery cumulus clouds. Toward the back edge of the band, the clouds were stable stratocumulus. Tops of these low clouds were mostly between 10000 to 13000 feet with the highest tops along the leading.
A surface low pressure system associated with the front, near 30°N 151°W, was moving east near 15 miles an hour. An isolated thunderstorm or two was noted near the low center. The northerly wind flow west of the low was sending a surge of broken to scattered stratocumulus clouds south toward the islands. These clouds were filling in behind the front and extended up to near 40 north latitude. A few of these stable low clouds had already reached Kauai.
A cluster of broken to overcast low clouds Sat just off the southeast coast of the Big Island. This cluster was nearly stationary. But skies Big Island were cloud-free this morning though visible imagery showed a small steam or ash plume near Kilauea Volcano.
Another frontal system was approaching from the northwest but it was still about 800 miles northwest of Kauai.
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