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: 847 AM PDT Sat Oct 23 2021

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12NM SW San Francisco CA

Marine Zone Forecast


...GALE WARNING IN EFFECT FROM LATE TONIGHT THROUGH SUNDAY AFTERNOON...
Synopsis: PZZ500-240415- 847 AM PDT Sat Oct 23 2021 .Synopsis for the Central California Coast and Bays Including the Monterey Bay...Greater Farallones...and Cordell Bank National Marine Sanctuaries... Southerly winds will increase to gales as a strong low pressure system nears the Pacific Northwest sweeping a cool frontal system across our coastal waters later Sunday into Monday morning. An atmospheric river will accompany this frontal system bringing heavy rain later in the weekend. Expect strong and gusty southerly winds, steepening waves and large swell Sunday into Monday. Chilly and showery weather continuing Tuesday. Drier mid to late next week. $$

Today
SW winds 5 to 10 kt, becoming S 10 to 15 kt this afternoon. Wind waves 1 to 2 ft. W swell 9 to 11 ft at 15 seconds. A chance of rain this morning, then rain this afternoon.
Tonight
S winds 15 to 25 kt with gusts up to 35 kt. Wind waves 3 to 4 ft. W swell 7 to 9 ft at 13 seconds. Rain.
Sun
S winds 25 to 30 kt with gusts up to 45 kt. Wind waves 8 to 9 ft. W swell 7 to 9 ft at 13 seconds. Rain.
Sun Night
SW winds 15 to 20 kt with gusts up to 30 kt. Wind waves 8 to 9 ft. W swell 13 to 15 ft at 16 seconds. Rain.
Mon
W winds 10 to 15 kt. Wind waves 3 to 4 ft. W swell 17 to 19 ft at 18 seconds. Rain likely.
Mon Night
SW winds 5 to 10 kt. Wind waves 1 to 2 ft. W swell 15 to 17 ft at 17 seconds. A chance of rain.
Tue
S winds 10 to 15 kt. Wind waves 1 to 2 ft. W swell 12 to 14 ft. A chance of rain.
Wed
NW winds 10 to 15 kt. Wind waves 1 to 2 ft. W swell 7 to 9 ft. .....san francisco bar/fourfathom bank forecast..... in the deep water channel...seas 11 to 13 ft, with a dominant period of 14 seconds. across the bar...seas 12 to 15 ft, with a dominant period of 14 seconds. Maximum ebb current of 3.4 kt at 06:43 pm saturday and 0.9 kt at 08:01 am sunday.
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ABOUT THIS FORECAST

Last Update: 847 AM PDT Sat Oct 23 2021
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