Powerhouse Storm Set for West; Severe Weather Threat the Next Several Days

The most significant of the recent Pacific storms to reach the West Coast will arrive this weekend, mainly Sunday into Monday. A number of hazards are expected, especially the heavy rain threat on Sunday across northern and central California that may result in flooding and debris flows near burn scars. These Pacific storms will produce severe weather the next several days east of the Rockies.
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Last Update: 916 AM PDT Sat Oct 23 2021

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Los Angeles/Oxnard, CA Local Forecast Office

18NM SW Long Beach CA

Marine Zone Forecast


...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 PM PDT THIS EVENING...
Synopsis: PZZ600-232230- 916 AM PDT Sat Oct 23 2021 .Synopsis for the southern California coast and Santa Barbara Channel including the Channel Islands National Marine Sanctuary and National Park...at 16Z, or 9 AM PDT, a 1012 surface high was centered over Colorado, and a 966 MB surface low was 500 NM west of British Columbia, with a cold front extended southward to California. A strong storm is expected Sunday night into Monday, which will bring gusty south winds, steep, short-period waves, and a large northwest to west swell. $$

Today
Western portion...W winds 15 to 25 kt. Elsewhere...W winds 10 to 15 kt. Combined seas 5 to 7 ft dominant period 8 seconds. patchy fog in the morning. Patchy drizzle in the morning.
Tonight
Western portion, NW winds 15 to 25 kt becoming variable 10 kt or less after midnight. Elsewhere, SW winds 5 to 10 kt becoming E after midnight. Combined seas 4 to 6 ft dominant period 7 seconds. Patchy fog after midnight.
Sun
Winds variable 10 kt or less, becoming SW 10 kt in the afternoon. Wind waves 2 ft or less. W swell 3 ft at 10 seconds. Patchy fog in the morning.
Sun Night
SW winds 5 to 10 kt. Wind waves 2 ft or less. W swell 2 to 3 ft at 12 seconds. Slight chance of rain after midnight.
Mon
S winds 15 to 20 kt, becoming SW 15 to 25 kt with gusts to 30 kt in the afternoon. Combined seas 3 to 5 ft dominant period 11 seconds, building to 5 to 6 ft dominant period 18 seconds in the afternoon. Rain likely in the morning, then rain.
Mon Night
NW winds 15 to 25 kt with gusts to 30 kt. Combined seas 6 to 8 ft dominant period 17 seconds. Slight chance of rain in the evening.
Tue
NW winds 15 to 20 kt. Combined seas 5 to 7 ft.
Wed
NW winds 5 to 10 kt. Wind waves 2 ft or less. W swell 3 to 5 ft.
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Last Update: 916 AM PDT Sat Oct 23 2021
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