Heat Wave Persists Over the Central U.S.; Significant Flooding Expected in the Northern Mid-Atlantic Tuesday

Dangerous and extreme heat will remain across portions of the Central U.S. this week, persisting across the Mid to Lower Mississippi Valleys, Gulf Coast, Southern Plains and portions of Texas. A heat wave over the Southwest will intensify late this week. Severe thunderstorms and flash flooding will spread from the Great Lakes/Ohio Valley to the Mid-Atlantic and Northeast the next few days. Read More >

Hazardous Weather Conditions

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

Last Update: 209 AM PDT Tue Jul 28 2026

View Nearby Observations

For More Weather Information:

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 6 ft. Wave detail: NW 6 ft at 8 seconds and SW 2 ft at 17 seconds.

Tonight

NW wind 15 to 20 kt. Seas 6 to 9 ft. Wave detail: NW 8 ft at 9 seconds and SW 2 ft at 17 seconds.

Wed

NW wind 15 to 20 kt. Seas 5 to 8 ft. Wave detail: NW 6 ft at 9 seconds and SW 2 ft at 17 seconds.

Wed 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 16 seconds.

Thu

NW wind 15 to 20 kt. 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 5 to 8 ft. Wave detail: NW 7 ft at 9 seconds and S 2 ft at 15 seconds.

Fri

NW wind 10 to 15 kt. Seas 5 to 7 ft. Wave detail: NW 6 ft at 8 seconds and S 3 ft at 14 seconds.

Fri Night

NW wind 15 to 20 kt. Seas 5 to 7 ft, building to 6 to 9 ft after midnight. Wave detail: NW 7 ft at 9 seconds and S 3 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 3 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.

.....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 2.4 kt at 04:03 am tuesday and 1.3 kt at 04:56 pm tuesday.

.....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 2.4 kt at 04:03 AM Tuesday and 1.3 kt at 04:56 PM Tuesday.