Super Typhoon Sinlaku to Impact the Marianas and Guam; Severe Weather from the Southern Plains to the Great Lakes
Super Typhoon Sinlaku will bring destructive winds, widespread heavy rain/flooding, thunderstorms, and coastal impacts to the Marianas Islands into Wednesday. Typhoon conditions are likely over CNMI and tropical storm conditions over Guam. Severe thunderstorms and heavy rain are expected from the Southern Plains to the Great Lakes today. Read More >
Hazardous Weather Conditions
Last Update: 217 AM PDT Tue Apr 14 2026
For More Weather Information:
12NM SW San Francisco CA
Marine Zone Forecast
Today
NW wind 15 to 20 kt, easing to 10 to 15 kt late this morning and early afternoon, rising to 15 to 20 kt late. Seas 4 to 6 ft. Wave detail: NW 6 ft at 8 seconds and S 2 ft at 13 seconds.
Tonight
NW wind 15 to 20 kt. Seas 5 to 7 ft. Wave detail: NW 6 ft at 8 seconds and S 2 ft at 14 seconds.
Wed
NW wind 15 to 20 kt, easing to 10 to 15 kt in the afternoon. Seas 4 to 5 ft. Wave detail: NW 5 ft at 7 seconds and S 2 ft at 10 seconds.
Wed Night
NW wind 10 to 15 kt, rising to 15 to 20 kt after midnight. Seas 3 to 4 ft, building to 5 to 8 ft after midnight. Wave detail: NW 7 ft at 6 seconds and S 2 ft at 15 seconds.
Thu
NW wind 20 to 25 kt, easing to 15 to 20 kt in the afternoon. Seas 6 to 9 ft. Wave detail: NW 8 ft at 8 seconds and S 2 ft at 13 seconds.
Thu Night
NW wind 20 to 25 kt, easing to 15 to 20 kt after midnight. Seas 5 to 8 ft. Wave detail: NW 8 ft at 10 seconds and S 2 ft at 13 seconds.
Fri
N wind 5 to 10 kt. Seas 5 to 7 ft, subsiding to 3 to 5 ft in the afternoon. Wave detail: NW 6 ft at 10 seconds and S 2 ft at 15 seconds.
Fri Night
NW wind 10 to 15 kt. Seas 4 to 6 ft. Wave detail: NW 5 ft at 8 seconds.
Sat
NW wind 5 to 10 kt. Seas 3 to 5 ft. Wave detail: NW 4 ft at 8 seconds and SW 2 ft at 15 seconds.
Sat Night
NW wind 5 to 10 kt. Seas around 3 ft. Wave detail: NW 3 ft at 7 seconds.
.....san francisco bar/fourfathom bank forecast.....
in the deep water channel...mixed seas of 4 to 6 feet at 11 seconds.
across the bar...swell can be more than twice as high across the bar than surrounding waters. Waves are also more prone to break, particularly during strong ebb currents. Maximum ebb current of 2.5 kt at 02:57 am tuesday and 2.1 kt at 03:02 pm tuesday.
.....san francisco bar/fourfathom bank forecast.....
in the deep water channel...mixed seas of 4 to 6 feet at 11 seconds.
across the bar...swell can be more than twice as high across the bar than surrounding waters. Waves are also more prone to break, particularly during strong ebb currents. Maximum ebb current of 2.5 kt at 02:57 am tuesday and 2.1 kt at 03:02 pm tuesday.
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