Extreme Heat and Severe Thunderstorms Today

Extreme heat continues today from the central Plains to the lower Mississippi River Valley, over southeast Montana, and from southern California into the Southwest Deserts. Extreme Heat Warnings remain in effect. Severe thunderstorms capable of strong to severe wind gusts and large hail are possible across the Great Lakes into the Ohio Valley today into tonight. Read More >

Hazardous Weather Conditions

Small Craft Advisory until July 28, 09:00 AM PDT

Last Update: 255 AM PDT Mon Jul 27 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 10 to 15 kt, rising to 15 to 20 kt this afternoon. Seas 4 to 5 ft. Wave detail: NW 5 ft at 7 seconds and S 2 ft at 18 seconds.

Tonight

NW wind 15 to 20 kt. Seas 5 to 8 ft. Wave detail: NW 6 ft at 8 seconds and S 2 ft at 17 seconds.

Tue

NW wind 15 to 20 kt. Seas 5 to 7 ft. Wave detail: NW 6 ft at 8 seconds and SW 2 ft at 17 seconds.

Tue Night

NW wind 15 to 20 kt. Seas 6 to 9 ft. Wave detail: NW 7 ft at 9 seconds and SW 2 ft at 17 seconds.

Wed

NW wind 15 to 20 kt. Seas 5 to 7 ft. Wave detail: NW 6 ft at 9 seconds and S 2 ft at 17 seconds.

Wed Night

NW wind 15 to 20 kt. Seas 6 to 9 ft. Wave detail: NW 8 ft at 10 seconds and S 2 ft at 16 seconds.

Thu

NW wind 15 to 20 kt. Seas 5 to 8 ft. Wave detail: NW 7 ft at 9 seconds and S 3 ft at 15 seconds.

Thu Night

NW wind 15 to 20 kt. Seas 5 to 8 ft. Wave detail: NW 6 ft at 9 seconds and S 3 ft at 15 seconds.

Fri

NW wind 10 to 15 kt. Seas 4 to 6 ft. Wave detail: NW 5 ft at 9 seconds and S 3 ft at 14 seconds.

Fri Night

NW wind 15 to 20 kt. Seas 5 to 7 ft. Wave detail: NW 6 ft at 9 seconds and S 2 ft at 14 seconds.

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

in the deep water channel...mixed seas of 4 to 6 ft at 22 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 2.3 kt at 03:20 am monday and 1.2 kt at 04:11 pm monday.

.....SAN FRANCISCO BAR/FOURFATHOM BANK FORECAST..... IN THE DEEP WATER CHANNEL...Mixed seas of 4 to 6 ft at 22 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 2.3 kt at 03:20 AM Monday and 1.2 kt at 04:11 PM Monday.