Sinlaku Continues to Impact the Marianas; Severe Weather from the Central US to the Northeast; Late-Season Snow in the Northwest

Sinlaku continues to bring destructive winds, widespread heavy rain/flooding, and storm surge to the Marianas. Showers and severe thunderstorms are expected from the Northeast to the Mid-Mississippi Valley and to the Central/Southern Plains through Thursday. A front will produce late-season snowfall over the Cascades and Northern Rockies and coastal rain over the Northwest Coast through Thursday. Read More >

Hazardous Weather Conditions

Small Craft Advisory in effect from April 15, 03:00 PM PDT until April 16, 09:00 PM PDT

Last Update: 251 AM PDT Wed Apr 15 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 4 to 5 ft. Wave detail: NW 5 ft at 7 seconds.

Tonight

NW wind 15 to 20 kt, rising to 20 to 25 kt after midnight. Seas 3 to 4 ft, building to 5 to 7 ft after midnight. Wave detail: NW 5 ft at 7 seconds.

Thu

NW wind 20 to 25 kt. Seas 6 to 9 ft, subsiding to 5 to 7 ft in the afternoon. Wave detail: NW 8 ft at 9 seconds.

Thu Night

NW wind 20 to 25 kt, becoming N 10 to 15 kt after midnight. Seas 5 to 8 ft. Wave detail: NW 7 ft at 10 seconds and SW 2 ft at 14 seconds.

Fri

N wind 5 to 10 kt. Seas 4 to 6 ft. Wave detail: W 6 ft at 10 seconds.

Fri Night

NW wind 10 to 15 kt. Seas 3 to 5 ft. Wave detail: NW 4 ft at 9 seconds and SW 2 ft at 15 seconds.

Sat

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

Sat Night

NW wind 5 to 10 kt. Seas around 3 ft. Wave detail: NW 3 ft at 7 seconds and SW 2 ft at 15 seconds. A chance of rain after midnight.

Sun

W wind around 5 kt, backing to SW 10 to 15 kt in the afternoon. Seas around 2 ft or less. Wave detail: NW 2 ft at 6 seconds. A chance of rain.

Sun Night

W wind 10 to 15 kt, backing to S after midnight. Seas around 2 ft or less, then 3 to 4 ft after midnight. Wave detail: W 3 ft at 8 seconds. A chance of rain.

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

in the deep water channel...mixed seas of 3 to 5 feet at 14 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 3.0 kt at 03:31 am wednesday and 2.1 kt at 03:43 pm wednesday.