Thunderstorms and Heavy Rain in the Mid-South; Heat Continues in the Southeast and Southwest

Severe thunderstorms and heavy rain are expected across portions of the mid-Mississippi Valley into the Ohio Valley and portions of Arizona. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that, when combined with oppressive dew points, little-to-no relief from the scorching daytime highs will be available. Read More >

17NM S San Francisco CA

Marine Point Forecast

[NOTICE]
    • Overnight

      Overnight:Variable winds 5 kt or less. Areas of fog.  N swell 0 ft at 0 seconds. Wind waves 1 ft or less.

      Light Wind
      < 1ft

    • Wednesday

      Wednesday:Variable winds less than 5 kt becoming WNW 5 to 7 kt in the morning. Areas of fog before 9am.  N swell 0 ft at 0 seconds. Wind waves 1 ft or less.

      ⇑WNW 7kt
      < 1ft

    • Wednesday Night

      Wednesday Night:WNW wind around 6 kt becoming variable and less than 5 kt in the evening. Areas of fog between 3am and 4am.  N swell 0 ft at 0 seconds. Wind waves 1 ft or less.

      WNW 6kt⇓
      < 1ft

    • Thursday

      Thursday:Variable winds less than 5 kt becoming W 5 to 8 kt in the morning. Mostly cloudy. N swell 0 ft. Wind waves 1 ft or less.

      ⇑W 8kt
      < 1ft

    • Thursday Night

      Thursday Night:WNW wind 6 to 8 kt. Cloudy. N swell 0 ft. Wind waves 1 ft or less.

      WNW 8kt
      < 1ft

    • Friday

      Friday:WNW wind 7 to 10 kt. Cloudy. N swell 0 ft. Wind waves 1 ft or less.

      WNW 10kt
      < 1ft

    • Friday Night

      Friday Night:WNW wind 7 to 9 kt. Mostly cloudy. N swell 0 ft. Wind waves 1 ft or less.

      WNW 9kt
      < 1ft

    • Saturday

      Saturday:WNW wind 8 to 10 kt. Mostly cloudy. N swell 0 ft. Wind waves 1 ft or less.

      WNW 10kt
      < 1ft

    • Saturday Night

      Saturday Night:WNW wind 5 to 9 kt becoming variable and less than 5 kt after midnight. Mostly cloudy. N swell 0 ft. Wind waves 1 ft or less.

      WNW 9kt⇓
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 9:12 pm PDT Aug 18, 2026
Forecast Valid: 11pm PDT Aug 18, 2026-6pm PDT Aug 25, 2026

View Nearby Observations

Detailed Forecast


Overnight
Variable winds 5 kt or less. Areas of fog. N swell 0 ft at 0 seconds. Wind waves 1 ft or less.
Wednesday
Variable winds less than 5 kt becoming WNW 5 to 7 kt in the morning. Areas of fog before 9am. N swell 0 ft at 0 seconds. Wind waves 1 ft or less.
Wednesday Night
WNW wind around 6 kt becoming variable and less than 5 kt in the evening. Areas of fog between 3am and 4am. N swell 0 ft at 0 seconds. Wind waves 1 ft or less.
Thursday
Variable winds less than 5 kt becoming W 5 to 8 kt in the morning. Mostly cloudy. N swell 0 ft. Wind waves 1 ft or less.
Thursday Night
WNW wind 6 to 8 kt. Cloudy. N swell 0 ft. Wind waves 1 ft or less.
Friday
WNW wind 7 to 10 kt. Cloudy. N swell 0 ft. Wind waves 1 ft or less.
Friday Night
WNW wind 7 to 9 kt. Mostly cloudy. N swell 0 ft. Wind waves 1 ft or less.
Saturday
WNW wind 8 to 10 kt. Mostly cloudy. N swell 0 ft. Wind waves 1 ft or less.
Saturday Night
WNW wind 5 to 9 kt becoming variable and less than 5 kt after midnight. Mostly cloudy. N swell 0 ft. Wind waves 1 ft or less.

.....SAN FRANCISCO BAR/FOURFATHOM BANK FORECAST..... IN THE DEEP WATER CHANNEL...Mixed seas of 2 to 4 ft 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 2.5 kt at 09:33 PM Tuesday and 1.1 kt at 10:29 AM Wednesday.

*Notices:

  1. This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
  2. The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.
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ABOUT THIS FORECAST

Point Forecast: 37.51°N 122.49°W
Last Update: 9:12 pm PDT Aug 18, 2026
Forecast Valid: 11pm PDT Aug 18, 2026-6pm PDT Aug 25, 2026
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