Severe Thunderstorms for mid-Mississippi and Ohio Valley; Record Warmth and Fire Weather Concerns

Severe thunderstorms are expected later this afternoon and evening across the mid-Mississippi and Ohio Valley's. Large hail, damaging winds and a few tornadoes are all possible. Meanwhile, record warmth across the southern tier of the country continues; This will enhance fire weather conditions for the Plains. The cold front will head south on Friday with cooler temperatures east of the Rockies. Read More >

Hazardous Weather Conditions

Small Craft Advisory until March 26, 09:00 PM PDT

Last Update: 842 AM PDT Thu Mar 26 2026

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San Francisco Bay Area/Monterey, CA Local Forecast Office

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 7 to 10 ft, subsiding to 5 to 8 ft this afternoon. Wave detail: NW 9 ft at 10 seconds.

Tonight

NW wind 10 to 15 kt, easing to 5 to 10 kt after midnight. Seas 5 to 7 ft. Wave detail: NW 7 ft at 11 seconds.

Fri

NW wind 5 to 10 kt. Seas 4 to 6 ft. Wave detail: NW 6 ft at 11 seconds.

Fri Night

NW wind 5 to 10 kt. Seas 3 to 5 ft. Wave detail: NW 4 ft at 10 seconds.

Sat

W wind around 5 kt, rising to 5 to 10 kt in the afternoon. Seas 3 to 5 ft. Wave detail: NW 4 ft at 10 seconds.

Sat Night

NW wind 5 to 10 kt. Seas 3 to 5 ft. Wave detail: NW 4 ft at 10 seconds.

Sun

NW wind around 5 kt, rising to 5 to 10 kt in the afternoon. Seas 3 to 4 ft. Wave detail: NW 4 ft at 9 seconds.

Sun Night

NW wind 5 to 10 kt. Seas 3 to 4 ft. Wave detail: NW 4 ft at 9 seconds.

Mon

NW wind 5 to 10 kt, becoming W 10 to 15 kt in the afternoon. Seas around 3 ft. Wave detail: NW 3 ft at 8 seconds.

Mon Night

NW wind 5 to 10 kt. Seas around 3 ft in the evening, then around 2 ft or less. Wave detail: W 2 ft at 8 seconds. A chance of rain after midnight.

.....san francisco bar/fourfathom bank forecast.....

in the deep water channel...mixed seas of 5 to 7 feet at 6 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 10:27 am thursday and 1.3 kt at 12:41 am friday.

.....SAN FRANCISCO BAR/FOURFATHOM BANK FORECAST..... IN THE DEEP WATER CHANNEL...Mixed seas of 5 to 7 feet at 6 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 10:27 AM Thursday and 1.3 kt at 12:41 AM Friday.