Critical Fire Weather Conditions in the Plains; Increasing Severe Weather Chances for the Plains and Upper Midwest
A strengthening storm system will bring impactful weather to the much of Central U.S. over the next couple of days, including heavy snow in the northern Rockies, Critical fire weather conditions for portions of the Plains, and increasing severe weather chances from the central/southern Plains to the Upper Midwest. Read More >
Hazardous Weather Conditions
Last Update: 300 PM PDT Wed Apr 22 2026
For More Weather Information:
12NM SW San Francisco CA
Marine Zone Forecast
Tonight
NW wind 10 to 15 kt, becoming N 5 to 10 kt after midnight, rising to 10 to 15 kt late. Seas 4 to 5 ft. Wave detail: W 5 ft at 9 seconds.
Thu
NW wind 10 to 15 kt, rising to 15 to 20 kt in the afternoon. Seas 4 to 5 ft. Wave detail: W 5 ft at 7 seconds and S 2 ft at 16 seconds.
Thu Night
NW wind 20 to 25 kt, easing to 15 to 20 kt after midnight. Seas 4 to 6 ft. Wave detail: NW 6 ft at 9 seconds and S 2 ft at 13 seconds.
Fri
W wind 5 to 10 kt. Seas 4 to 6 ft. Wave detail: W 5 ft at 8 seconds and SW 2 ft at 15 seconds.
Fri Night
W wind 5 to 10 kt. Seas 3 to 4 ft. Wave detail: W 4 ft at 8 seconds.
Sat
W wind 5 to 10 kt. Seas 3 to 4 ft. Wave detail: W 3 ft at 9 seconds and SW 2 ft at 14 seconds.
Sat Night
W wind 5 to 10 kt. Seas around 3 ft. Wave detail: W 3 ft at 9 seconds and SW 2 ft at 14 seconds.
Sun
W wind 5 to 10 kt. Seas around 3 ft. Wave detail: W 3 ft at 7 seconds.
Sun Night
NW wind 5 to 10 kt. Seas 3 to 4 ft. Wave detail: W 3 ft at 7 seconds.
Mon
NW wind around 5 kt, backing to W in the afternoon. Seas 3 to 4 ft. Wave detail: W 3 ft at 7 seconds.
Mon Night
NW wind 5 to 10 kt. Seas 3 to 4 ft.
.....san francisco bar/fourfathom bank forecast.....
in the deep water channel...mixed seas of 5 to 7 feet at 13 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 1.0 kt at 10:05 pm wednesday and 2.9 kt at 08:53 am thursday.
.....san francisco bar/fourfathom bank forecast.....
in the deep water channel...mixed seas of 5 to 7 feet at 13 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 1.0 kt at 10:05 pm wednesday and 2.9 kt at 08:53 am thursday.
Additional Forecasts and Information
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