Strong Storm System To Impact The West

A large, strong and moist Pacific storm system will impact a good portion of the West on Friday through the upcoming weekend. Heavy rain, strong winds, heavy mountain snow and rough surf can be expected. The heavy rain may result in some flash flooding on Friday and Saturday across northern portions of California and southwestern Oregon, especially near recent burn scar areas.
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Last Update: 907 PM PST Thu Dec 5 2019

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12NM SW San Francisco CA

Marine Zone Forecast


...SMALL CRAFT ADVISORY IN EFFECT FROM MIDNIGHT PST TONIGHT THROUGH FRIDAY AFTERNOON...
...GALE WARNING IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY NIGHT...
Synopsis: PZZ500-061800- 907 PM PST Thu Dec 5 2019 .Synopsis for the Central California Coast and Bays Including the Monterey Bay...Greater Farallones...and Cordell Bank National Marine Sanctuaries... A 981 mb low centered 800 miles west of Cape Blanco will wobble east towards the northern California coast by Saturday night. This will bring another round of gusty southerly winds to the coastal waters with gale force winds expected by early Friday and persisting through Friday night. Moderate northwest swell will gradually build to around 10 to 15 feet Friday over the northern waters then spread south across the coastal waters over the weekend. $$

Tonight
SE winds 10 to 20 kt with gusts up to 30 kt. Wind waves 3 to 4 ft, increasing to 6 to 7 ft after midnight. W swell 3 to 5 ft at 14 seconds. A slight chance of rain after midnight.
Fri
SE winds 20 to 30 kt with gusts up to 40 kt. Wind waves 6 to 7 ft. W swell 4 to 6 ft at 16 seconds. A chance of rain.
Fri Night
S winds 25 to 35 kt with gusts up to 45 kt. Wind waves 9 to 10 ft. W swell 7 to 9 ft at 17 seconds. Showers and a slight chance of thunderstorms.
Sat
S winds 15 to 25 kt with gusts up to 30 kt. Wind waves 7 to 8 ft. W swell 9 to 11 ft at 14 seconds. Showers and a slight chance of thunderstorms.
Sat Night
S winds 10 to 20 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. W swell 8 to 10 ft at 13 seconds. Rain.
Sun
S winds 5 to 15 kt. Wind waves 1 ft. W swell 6 to 8 ft at 12 seconds. A chance of rain.
Sun Night
NW winds 5 to 10 kt. Wind waves 1 ft. W swell 5 to 7 ft at 11 seconds.
Mon
N winds around 5 kt. Wind waves 1 ft. W swell 4 to 6 ft and SW around 2 ft.
Tue
E winds up to 10 kt. Wind waves 1 ft. W swell 4 to 6 ft and SW around 2 ft. winds and wind waves higher in and near thunderstorms. .....san francisco bar/fourfathom bank forecast..... in the deep water channel...seas 4 to 6 ft with a dominant period of 13 seconds. across the bar...seas 5 to 7 ft with a dominant period of 13 seconds. Maximum ebb current of 1.3 kt at 11:43 pm thursday and 2.0 kt at 12:37 pm friday.
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ABOUT THIS FORECAST

Last Update: 907 PM PST Thu Dec 5 2019
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