Excessive Rainfall and Tropical Storm in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce considerable, potentially life-threatening, flooding across the lower Mississippi River Valley and central Great Lakes region through tonight. Tropical Storm Arthur will move northeastward along the Texas coast today and then move inland over southwestern Louisiana by tonight. An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana. Read More >

Last Update: 900 AM PDT Wed Jun 17 2026

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San Francisco Bay Area/Monterey, CA Local Forecast Office

12NM SW San Francisco CA

Marine Zone Forecast

Today

S wind 5 to 10 kt. Seas 3 to 4 ft, building to 4 to 6 ft this afternoon. Wave detail: W 4 ft at 9 seconds and SW 4 ft at 16 seconds.

Tonight

S wind 5 to 10 kt. Seas 4 to 6 ft. Wave detail: W 4 ft at 8 seconds and SW 4 ft at 16 seconds.

Thu

S wind 5 to 10 kt, rising to 10 to 15 kt in the afternoon. Seas 4 to 6 ft. Wave detail: NW 4 ft at 9 seconds and SW 4 ft at 13 seconds.

Thu Night

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

Juneteenth

S wind 5 to 10 kt, rising to 10 to 15 kt in the afternoon. Seas 4 to 5 ft. Wave detail: S 5 ft at 9 seconds.

Fri Night

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

Sat

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

Sat Night

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

Sun

W wind 5 to 10 kt. Seas 3 to 5 ft. Wave detail: NW 5 ft at 9 seconds and SW 2 ft at 15 seconds. Patchy fog in the morning.

Sun Night

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

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

in the deep water channel...mixed seas of 4 to 6 ft at 20 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 1.5 kt at 07:30 pm wednesday and 3.7 kt at 06:56 am thursday.

.....SAN FRANCISCO BAR/FOURFATHOM BANK FORECAST..... IN THE DEEP WATER CHANNEL...Mixed seas of 4 to 6 ft at 20 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 1.5 kt at 07:30 PM Wednesday and 3.7 kt at 06:56 AM Thursday.