Dangerous Heat in the Central and Eastern U.S.; Severe Thunderstorms in the Central U.S. and Northeast; Critical Fire Weather in the Four Corners

Dangerous, record-breaking heat will intensify across most of the central and eastern U.S this week. Heat indices will likely exceed 100 degrees. Severe thunderstorms are forecast from parts of the central High Plains into the Upper Midwest, and across parts of the Northeast. Critical fire weather conditions will continue across portions of the Four Corners and Great Basin. Read More >

Last Update: 831 PM PDT Tue Jun 30 2026

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12NM SW San Francisco CA

Marine Zone Forecast


Tonight
W wind 10 to 15 kt, becoming NW 15 to 20 kt late this evening and early morning, easing to 10 to 15 kt late. Seas 7 to 10 ft. Wave detail: NW 9 ft at 11 seconds. Patchy fog late this evening and early morning.
Wed
W wind 5 to 10 kt. Seas 6 to 9 ft, subsiding to 5 to 7 ft in the afternoon. Wave detail: NW 8 ft at 10 seconds and SW 2 ft at 17 seconds.
Wed Night
SW wind 5 to 10 kt. Seas 5 to 7 ft. Wave detail: NW 6 ft at 10 seconds.
Thu
SW wind 5 to 10 kt. Seas 5 to 7 ft. Wave detail: NW 6 ft at 10 seconds and SW 2 ft at 16 seconds. Patchy dense fog in the afternoon.
Thu Night
W wind 5 to 10 kt. Seas 3 to 5 ft. Wave detail: NW 5 ft at 9 seconds.
Fri
W wind 5 to 10 kt. Seas 3 to 5 ft. Wave detail: NW 4 ft at 9 seconds.
Fri Night
W wind 5 to 10 kt. Seas 3 to 5 ft. Wave detail: NW 4 ft at 8 seconds.
Independence Day
W wind 5 to 10 kt. Seas 3 to 5 ft. Wave detail: NW 4 ft at 8 seconds.
Sat Night
W wind 5 to 10 kt. Seas 4 to 6 ft. Wave detail: NW 5 ft at 8 seconds and S 2 ft at 15 seconds.
Sun
W wind 5 to 10 kt. Seas 4 to 6 ft. Wave detail: NW 5 ft at 9 seconds.
Sun Night
W wind 10 to 15 kt. Seas 4 to 6 ft. Wave detail: NW 5 ft at 8 seconds.

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

in the deep water channel...mixed seas of 3 to 5 ft at 15 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 2.9 kt at 05:31 am wednesday and 1.1 kt at 06:54 pm wednesday.




.....SAN FRANCISCO BAR/FOURFATHOM BANK FORECAST..... IN THE DEEP WATER CHANNEL...Mixed seas of 3 to 5 ft at 15 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 2.9 kt at 05:31 AM Wednesday and 1.1 kt at 06:54 PM Wednesday.
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831 PM PDT Tue Jun 30 2026
 
 

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