Wednesday, April 23, 2014 596-SURF , 596-WAVE , 922-BONG , 638-RUSH , 572-SURF(MAUI) , 241-SURF (KAUAI) , 324-RUSH (BIG ISLAND)
   
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2.3.14 9am. On 4/22
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Issued: Apr 22, 2014 2:30 PM HST


Based on data through 2:00 pm Apr 22 2014 HST


Water vapor imagery showed a persistent upper level low just a few miles north of Niihau early this Tuesday afternoon. The low appeared to be nearly stationary. It was spreading several small clusters of broken to overcast cirrus clouds over the area from 21°N to 24°N between 159°W and 161°W. Thus while the cirrus was affecting Kauai and Niihau, the rest of the state was void of high clouds.

A ragged stream of broken cirrus clouds flowing up from the deeper tropics was passing just east of the Big Island. The stream was centered along a line from 10°N 10°W to 20°N 152°W to 23°N 145°W. It was about 100 miles wide at 10°N and gradually widened to 170 miles across east of the Big Island. From there it spread out to near 240 miles wide as it continued northeastward.

Sturdy trade winds continued to sweep randomly scattered clusters and patches of low clouds through the islands. These low clouds were moving west around 30 miles an hour. At 2 pm, skies were mostly cloudy over Kauai and Niihau. Some broken low clouds lined the windward side of the Big Island and the Koolau mountains on Oahu as well as the east parts of Maui and Molokai. But the majority of the state was sunny to mostly sunny.

In the distance, a large band of cirrus stretched from west to north of the state. The cirrus band was roughly 150 miles wide. The south edge of the band extended through 22°N 180°E to 25°N 170°W to 27°N 165°W through 30°N 162°W. This band was drifting slowly eastward.

Hawaii Visible Satellite image for 0000 UTC

Central Pacific Infrared Satellite image for 0000 UTC

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