Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds from the Upper Midwest into the Northeast

A prolonged atmospheric river will continue to impact the Pacific Northwest into the Northern Rockies with heavy rainfall, areas of urban and river flooding, landslides, heavy mountain snow, and gusty winds into Thursday. A strong clipper system will bring the threat of heavy snow and high winds across the Upper Midwest/Great Lakes as well as portions of the interior Northeast and Appalachians. Read More >

27NM W San Francisco CA

Marine Point Forecast

[NOTICE]
    • Wednesday

      Wednesday:N wind 5 to 7 kt. Sunny. Mixed swell...WNW 6 to 7 ft at 13 seconds and SSW 4 ft at 16 seconds  decreasing to  at 10 seconds . Wind waves 1 to 2 ft.

      N 7kt
      7ft

      Small Craft Advisory
      Small Craft Advisory

    • Wednesday Night

      Wednesday Night:NNW wind around 6 kt. Partly cloudy. Mixed swell...WNW 7 ft at 12 seconds and S 4 ft at 9 seconds  becoming SSW 1 ft at 14 seconds . Wind waves 1 to 2 ft.

      NNW 6kt
      7-8ft

      Small Craft Advisory
      Small Craft Advisory

    • Thursday

      Thursday:N wind around 7 kt. Sunny. Mixed swell...WNW 7 to 8 ft at 14 seconds and SSW 4 ft at 12 seconds. Wind waves around 1 ft.

      N 7kt
      8ft

    • Thursday Night

      Thursday Night:NNW wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Partly cloudy. Mixed swell...WNW 8 ft and SW 1 to 2 ft. Wind waves around 1 ft.

      NNW 7kt⇓
      8ft

    • Friday

      Friday:NE wind 6 to 8 kt. Sunny. Mixed swell...WNW 6 to 7 ft and SW 2 ft. Wind waves around 1 ft.

      NE 8kt
      7-8ft

    • Friday Night

      Friday Night:Variable winds 5 kt or less. Partly cloudy. Mixed swell...WNW 5 to 6 ft and SSW 1 to 2 ft. Wind waves 1 ft or less.

      Light Wind
      5-6ft

    • Saturday

      Saturday:E wind 5 to 7 kt. Mostly sunny. Mixed swell...WNW 4 ft and SSW 1 ft. Wind waves 1 ft or less.

      E 7kt
      4ft

    • Saturday Night

      Saturday Night:Variable winds 5 kt or less. Mostly cloudy. Mixed swell...WNW 3 ft and SSW 1 ft. Wind waves 1 ft or less.

      Light Wind
      3ft

    • Sunday

      Sunday:Variable winds 5 kt or less. Patchy fog before 10am.  Mixed swell...W 3 ft and SSW 1 ft. Wind waves 1 ft or less.

      Light Wind
      3ft


Associated Zone Forecast which includes this point

Last Update: 12:26 am PST Dec 10, 2025
Forecast Valid: 4am PST Dec 10, 2025-6pm PST Dec 16, 2025

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

Wednesday
N wind 5 to 7 kt. Sunny. Mixed swell...WNW 6 to 7 ft at 13 seconds and SSW 4 ft at 16 seconds decreasing to at 10 seconds . Wind waves 1 to 2 ft.
Wednesday Night
NNW wind around 6 kt. Partly cloudy. Mixed swell...WNW 7 ft at 12 seconds and S 4 ft at 9 seconds becoming SSW 1 ft at 14 seconds . Wind waves 1 to 2 ft.
Thursday
N wind around 7 kt. Sunny. Mixed swell...WNW 7 to 8 ft at 14 seconds and SSW 4 ft at 12 seconds. Wind waves around 1 ft.
Thursday Night
NNW wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Partly cloudy. Mixed swell...WNW 8 ft and SW 1 to 2 ft. Wind waves around 1 ft.
Friday
NE wind 6 to 8 kt. Sunny. Mixed swell...WNW 6 to 7 ft and SW 2 ft. Wind waves around 1 ft.
Friday Night
Variable winds 5 kt or less. Partly cloudy. Mixed swell...WNW 5 to 6 ft and SSW 1 to 2 ft. Wind waves 1 ft or less.
Saturday
E wind 5 to 7 kt. Mostly sunny. Mixed swell...WNW 4 ft and SSW 1 ft. Wind waves 1 ft or less.
Saturday Night
Variable winds 5 kt or less. Mostly cloudy. Mixed swell...WNW 3 ft and SSW 1 ft. Wind waves 1 ft or less.
Sunday
Variable winds 5 kt or less. Patchy fog before 10am. Mixed swell...W 3 ft and SSW 1 ft. Wind waves 1 ft or less.

*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: 37.7°N 122.97°W
Last Update: 12:26 am PST Dec 10, 2025
Forecast Valid: 4am PST Dec 10, 2025-6pm PST Dec 16, 2025
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