Severe Thunderstorms and Heavy Rain Across the Ohio Valley;

Severe thunderstorms with damaging wind gusts will be possible from the mid-Mississippi Valley into parts of the Ohio Valley and central Appalachians. Heavy rain associated with these storms may lead to considerable flash and urban flooding impacts across portions of the Ohio Valley. Mid-summer heat persists from the Central Plains to the Southeast. Read More >

Last Update: 319 AM PDT Tue Aug 11 2026

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San Francisco Bay Area/Monterey, CA Local Forecast Office

12NM SW San Francisco CA

Marine Zone Forecast

Today

SW wind 5 to 10 kt. Seas 3 to 5 ft. Wave detail: NW 4 ft at 9 seconds and SW 2 ft at 14 seconds.

Tonight

SW wind around 5 kt, rising to 5 to 10 kt after midnight. Seas 4 to 6 ft. Wave detail: NW 5 ft at 9 seconds and S 2 ft at 13 seconds.

Wed

SW wind 5 to 10 kt. Seas 4 to 6 ft. Wave detail: NW 5 ft at 9 seconds.

Wed Night

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

Thu

SW wind 5 to 10 kt. Seas 4 to 6 ft. Wave detail: NW 5 ft at 9 seconds and S 2 ft at 16 seconds.

Thu Night

W wind 5 to 10 kt. Seas 3 to 5 ft. Wave detail: NW 4 ft at 8 seconds and S 2 ft at 15 seconds.

Fri

SW wind 5 to 10 kt. Seas 3 to 4 ft. Wave detail: NW 4 ft at 8 seconds and S 2 ft at 15 seconds.

Fri Night

W wind 5 to 10 kt. Seas 3 to 4 ft. Wave detail: NW 3 ft at 7 seconds and S 3 ft at 17 seconds.

Sat

SW wind 5 to 10 kt. Seas 3 to 4 ft. Wave detail: W 3 ft at 7 seconds and S 2 ft at 17 seconds.

Sat Night

W wind around 5 kt. Seas 3 to 4 ft. Wave detail: NW 3 ft at 7 seconds and S 3 ft at 16 seconds.

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

in the deep water channel...mixed seas of 3 to 5 ft at 9 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 3.2 kt at 03:21 am tuesday and 1.9 kt at 04:16 pm tuesday.

.....SAN FRANCISCO BAR/FOURFATHOM BANK FORECAST..... IN THE DEEP WATER CHANNEL...Mixed seas of 3 to 5 ft at 9 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 3.2 kt at 03:21 AM Tuesday and 1.9 kt at 04:16 PM Tuesday.