Friday, August 22, 2014 596-SURF , 596-WAVE , 922-BONG , 638-RUSH , 572-SURF(MAUI) , 241-SURF (KAUAI) , 324-RUSH (BIG ISLAND)
   
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Issued: Aug 21, 2014 7:30 PM HST


Based on data through 7:00 pm Aug 21 2014 HST


The area of low clouds and scattered showers that was over Maui county at sunrise this morning, broke up over the county as the day progressed. Thanks to a moderate trade wind flow of 15 to 20 mph, the remnants were then carried through Oahu this afternoon resulting in mostly cloudy skies and some scattered showers. Skies have since pretty much cleared Oahu but another loose area of low clouds may bring additional windward and mauka showers to the island this evening.

This same area of low clouds also poses a threat of a few showers for the windward and mountain areas of Maui and Molokai for early this evening. Elsewhere around the state, fair skies ruled Kauai and Lanai while a shower or two are detected off the leeward coast of Niihau.

As for the Big Island, the windward side, from the Hamakua coast to the Kau district, scattered to locally overcast low clouds ruled area. Overcast clouds covered the entire Kona slopes and coast, and even the immediate coastal waters. No showers were detected this hour in this area of the Big Island, but isolated showers did occurred late this afternoon between Honaunau and Hookena.

Far to the northwest corner of the infrared imagery, a ill defined cold front lies just to the west of Midway atoll.

Deep convection is absent in the tropics south of the Hawaiian islands. The most active area for pulsing thunderstorms the past six hours is far to the southwest of Kauai, roughly in the area between 10°N and 03°N from 165°W to the date line.

Water vapor imagery shows an upper level trough from 30°N 151°W to 26°N 153°W to 24°N 156°W to 26°N 166°W, or about 100 miles north of Kauai. The trough is moving southeastward at 10 mph.

Hawaii Infrared Satellite image for 0500 UTC

Central Pacific Infrared Satellite image for 0500 UTC


LAU

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