Hawaii and Guam Concerns; Record Warmth Spreads Eastward; Heavy Snow for Sierra-Nevada; Severe Weather for the Plains

A very active spring pattern with tropical concerns across the Pacific. Heavy rainfall will continue to impact Hawaii this weekend. Meanwhile we continue to monitor a developing typhoon that may affect Guam into early next week. For the Lower 48, heavy snow for mountains of California this weekend, increase threat for severe thunderstorms next week for the Plains and record warmth spreads east. Read More >

Hazardous Weather Conditions

Small Craft Advisory in effect from April 11, 09:00 AM PDT until April 11, 09:00 PM PDT

Last Update: 817 PM PDT Fri Apr 10 2026

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San Francisco Bay Area/Monterey, CA Local Forecast Office

12NM SW San Francisco CA

Marine Zone Forecast

Tonight

S wind 10 to 15 kt, becoming SW 5 to 10 kt late this evening and overnight. Seas 3 to 4 ft. Wave detail: S 3 ft at 6 seconds and NW 2 ft at 14 seconds. A slight chance of tstms this evening. A chance of rain.

Sat

S wind 15 to 20 kt, rising to 20 to 25 kt with occasional gusts up to 35 kt in the afternoon. Seas 3 to 5 ft. Wave detail: S 4 ft at 5 seconds and NW 2 ft at 12 seconds. A chance of rain in the morning, then showers with a slight chance of tstms in the afternoon.

Sat Night

S wind 20 to 25 kt with occasional gusts up to 35 kt, becoming SW 15 to 20 kt after midnight. Seas 5 to 7 ft, building to 7 to 9 ft after midnight. Wave detail: SW 8 ft at 7 seconds and NW 3 ft at 11 seconds. Rain with a chance of tstms in the evening, then showers with a slight chance of tstms after midnight.

Sun

SW wind 15 to 20 kt. Seas 7 to 10 ft. Wave detail: SW 8 ft at 8 seconds and W 9 ft at 11 seconds. A chance of tstms. Showers.

Sun Night

W wind 10 to 15 kt, becoming NW 5 to 10 kt after midnight. Seas 5 to 8 ft. Wave detail: W 7 ft at 10 seconds and S 3 ft at 15 seconds. A chance of rain, mainly in the evening.

Mon

NW wind 5 to 10 kt. Seas 4 to 6 ft. Wave detail: W 5 ft at 10 seconds and SW 3 ft at 13 seconds.

Mon Night

NW wind 15 to 20 kt. Seas 4 to 5 ft. Wave detail: W 5 ft at 9 seconds.

Tue

NW wind 10 to 15 kt, rising to 15 to 20 kt in the afternoon. Seas 3 to 5 ft. Wave detail: NW 4 ft at 8 seconds and SW 2 ft at 14 seconds.

Tue Night

NW wind 15 to 20 kt. Seas 4 to 6 ft. Wave detail: NW 5 ft at 8 seconds.

Wed

NW wind 15 to 20 kt. Seas 4 to 6 ft. Wave detail: NW 5 ft at 8 seconds.

Wed Night

NW wind 20 to 25 kt. Seas 4 to 5 ft. Wave detail: NW 5 ft at 7 seconds.

winds and seas higher in and near tstms.

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

in the deep water channel...mixed seas of 2 to 4 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 12:51 am saturday and 1.4 kt at 12:27 pm saturday.