Extreme Heat Across the Southern U.S.; Flash Flooding Threats in the Mid-Atlantic, Northeast, and Four Corners Region

Dangerous and extreme heat will remain across portions of the southern U.S. this week. Heavy rainfall may bring significant flash flooding across portions of the Mid-Atlantic and Northeast through the night, and additional flash flooding concerns across New England on Wednesday. Monsoonal thunderstorms will bring a flash flood risk to the Four Corners region, especially in burn scar areas Read More >

Hazardous Weather Conditions

Small Craft Advisory until July 30, 03:00 PM PDT

Last Update: 200 AM PDT Wed Jul 29 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. Seas 5 to 7 ft. Wave detail: NW 6 ft at 9 seconds and SW 2 ft at 17 seconds.

Tonight

NW wind 15 to 20 kt. Seas 6 to 9 ft. Wave detail: NW 7 ft at 9 seconds and SW 2 ft at 16 seconds.

Thu

NW wind 10 to 15 kt, rising to 15 to 20 kt in the afternoon. Seas 5 to 7 ft. Wave detail: NW 6 ft at 9 seconds and S 2 ft at 15 seconds.

Thu Night

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

Fri

NW wind 10 to 15 kt, rising to 15 to 20 kt in the afternoon. Seas 5 to 7 ft. Wave detail: NW 6 ft at 8 seconds and S 2 ft at 14 seconds.

Fri Night

NW wind 15 to 20 kt. Seas 5 to 8 ft. Wave detail: NW 6 ft at 9 seconds and S 2 ft at 14 seconds.

Sat

NW wind 15 to 20 kt. Seas 5 to 7 ft. Wave detail: NW 6 ft at 9 seconds and S 2 ft at 13 seconds.

Sat Night

NW wind 20 to 25 kt. Seas 8 to 11 ft. Wave detail: NW 10 ft at 10 seconds and S 2 ft at 13 seconds.

Sun

NW wind 15 to 20 kt. Seas 7 to 10 ft, subsiding to 5 to 8 ft in the afternoon. Wave detail: NW 9 ft at 10 seconds and S 2 ft at 13 seconds.

Sun Night

NW wind 15 to 20 kt. Seas 7 to 10 ft. Wave detail: NW 8 ft at 10 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 2.6 kt at 04:50 am wednesday and 1.4 kt at 05:39 pm wednesday.

.....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 2.6 kt at 04:50 AM Wednesday and 1.4 kt at 05:39 PM Wednesday.