Heavy Rain and Flood Threat Continues; Wintry Mix Extends from the Plains to the Northeast; and Snow in the West

Additional rainfall from the Southern Plains to the Ohio Valley will enhance the threat for additional flash flooding and main stem river flooding. Areas of accumulating snow and ice are expected across portions of the Central Plains to the Northeast. The Western U.S. will mainly be cold with the threat for heavy snow across parts of northern California, the Great Basin and the central Rockies.
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Last Update: 216 PM PST Wed Feb 21 2018

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Los Angeles/Oxnard, CA Local Forecast Office

27NM WSW San Luis Obispo CA

Marine Zone Forecast


Synopsis: PZZ600-220615- 216 PM PST Wed Feb 21 2018 .Synopsis for the southern California coast and Santa Barbara Channel including the Channel Islands National Marine Sanctuary and National Park...at 21Z...or 1 PM PST...A 1023 MB surface low was near San Francisco. This low will move south, off the West Coast today. $$

Tonight
Winds variable 10 kt or less, becoming NW 10 to 15 kt after midnight. Wind waves 2 ft or less. NW swell 5 to 6 ft at 15 seconds. Slight chance of showers after midnight.
Thu
NW winds 15 to 25 kt with local gusts to 30 kt. Strongest western portion. Combined seas 6 to 7 ft dominant period 14 seconds, building to 8 to 9 ft dominant period 14 seconds in the afternoon. Slight chance of showers.
Thu Night
NW winds 25 to 30 kt with gusts to 35 kt, becoming 20 to 30 kt after midnight. Combined seas 9 to 11 ft dominant period 12 seconds, building to 11 to 13 ft dominant period 12 seconds after midnight. Slight chance of showers.
Fri
N winds 15 to 25 kt, becoming NW 10 to 20 kt with gusts to 25 kt in the afternoon. Combined seas 10 to 13 ft dominant period 12 seconds.
Fri Night
NW winds 20 to 30 kt. Combined seas 10 to 12 ft dominant period 12 seconds, subsiding to 8 to 10 ft dominant period 12 seconds after midnight.
Sat
N winds 10 to 15 kt, becoming NW 15 to 25 kt with gusts to 30 kt in the afternoon. Combined seas 7 to 9 ft dominant period 14 seconds.
Sat Night
NW winds 20 to 25 kt with gusts to 35 kt. Combined seas 7 to 8 ft dominant period 14 seconds.
Sun
N winds 15 to 25 kt with gusts to 35 kt. Combined seas 7 to 9 ft.
Mon
NW winds 15 to 25 kt with gusts to 35 kt. Combined seas 7 to 9 ft. Slight chance of showers.
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ABOUT THIS FORECAST

Last Update: 216 PM PST Wed Feb 21 2018
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