National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Super Typhoon Sinlaku to Impact the Marianas and Guam; Severe Weather Threat from the Central Plains to the Great Lakes

Super Typhoon Sinlaku will bring destructive winds, widespread heavy rain/flooding, and thunderstorms to the Marianas Islands into Wednesday. Tropical Storm conditions are likely over Guam. Severe thunderstorms and heavy rain are likely across the Upper Mississippi Valley and Great Lakes region with potential for large to very large hail, damaging wind, and tornadoes through Tuesday. Read More >

Hazardous Weather Conditions

13NM WNW San Francisco CA

Marine Point Forecast

[NOTICE]

    • Today

      Today:Variable winds less than 5 kt becoming WNW 9 to 14 kt in the afternoon. Sunny. Mixed swell...W 2 to 4 ft at 10 seconds and S 2 ft at 13 seconds decreasing to at 10 seconds . Wind waves 1 to 2 ft.

      ⇑WNW 14kt
      3-4ft

      Small Craft Advisory
      Small Craft Advisory

    • Tonight

      Tonight:NW wind 15 to 18 kt. Mostly clear. Mixed swell...WNW 4 ft at 7 seconds and SSW 1 to 2 ft at 14 seconds. Wind waves around 3 ft.

      NW 18kt
      4-5ft

      Small Craft Advisory
      Small Craft Advisory

    • Tuesday

      Tuesday:WNW wind 11 to 14 kt, with gusts as high as 20 kt. Mostly sunny. Mixed swell...WNW 2 to 4 ft at 7 seconds and SSW 1 ft at 14 seconds. Wind waves around 2 ft.

      WNW 14kt
      3-4ft

    • Tuesday Night

      Tuesday Night:NW wind 15 to 17 kt, with gusts as high as 23 kt. Partly cloudy. Mixed swell...NW 3 ft and SSW 1 to 2 ft. Wind waves around 3 ft.

      NW 17kt
      4-5ft

    • Wednesday

      Wednesday:NW wind 13 to 16 kt. Partly sunny. Mixed swell...WNW 1 to 3 ft and SSW 1 ft. Wind waves 2 to 3 ft.

      NW 16kt
      3-4ft

    • Wednesday Night

      Wednesday Night:WNW wind 14 to 19 kt. Partly cloudy. Mixed swell...WNW 2 ft and SSW 1 ft. Wind waves around 3 ft.

      WNW 19kt
      3-4ft

    • Thursday

      Thursday:NNW wind 14 to 20 kt, with gusts as high as 28 kt. Sunny. Mixed swell...WNW 3 ft and SSW 1 ft. Wind waves around 3 ft.

      NNW 20kt
      4ft

    • Thursday Night

      Thursday Night:NNW wind 11 to 20 kt, with gusts as high as 26 kt. Mostly clear. Mixed swell...WNW 4 ft and SSW 1 ft. Wind waves 2 to 3 ft.

      NNW 20kt
      4-5ft

    • Friday

      Friday:N wind 6 to 8 kt becoming WNW in the afternoon. Sunny. Mixed swell...WNW 2 to 3 ft and SW 2 ft. Wind waves around 1 ft.

      N 8kt
      3ft


Associated Zone Forecast which includes this point

Last Update: 1:26 am PDT Apr 13, 2026
Forecast Valid: 6am PDT Apr 13, 2026-6pm PDT Apr 19, 2026

View Nearby Observations

Detailed Forecast


Today
Variable winds less than 5 kt becoming WNW 9 to 14 kt in the afternoon. Sunny. Mixed swell...W 2 to 4 ft at 10 seconds and S 2 ft at 13 seconds decreasing to at 10 seconds . Wind waves 1 to 2 ft.
Tonight
NW wind 15 to 18 kt. Mostly clear. Mixed swell...WNW 4 ft at 7 seconds and SSW 1 to 2 ft at 14 seconds. Wind waves around 3 ft.
Tuesday
WNW wind 11 to 14 kt, with gusts as high as 20 kt. Mostly sunny. Mixed swell...WNW 2 to 4 ft at 7 seconds and SSW 1 ft at 14 seconds. Wind waves around 2 ft.
Tuesday Night
NW wind 15 to 17 kt, with gusts as high as 23 kt. Partly cloudy. Mixed swell...NW 3 ft and SSW 1 to 2 ft. Wind waves around 3 ft.
Wednesday
NW wind 13 to 16 kt. Partly sunny. Mixed swell...WNW 1 to 3 ft and SSW 1 ft. Wind waves 2 to 3 ft.
Wednesday Night
WNW wind 14 to 19 kt. Partly cloudy. Mixed swell...WNW 2 ft and SSW 1 ft. Wind waves around 3 ft.
Thursday
NNW wind 14 to 20 kt, with gusts as high as 28 kt. Sunny. Mixed swell...WNW 3 ft and SSW 1 ft. Wind waves around 3 ft.
Thursday Night
NNW wind 11 to 20 kt, with gusts as high as 26 kt. Mostly clear. Mixed swell...WNW 4 ft and SSW 1 ft. Wind waves 2 to 3 ft.
Friday
N wind 6 to 8 kt becoming WNW in the afternoon. Sunny. Mixed swell...WNW 2 to 3 ft and SW 2 ft. Wind waves around 1 ft.

*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: 37.85°N 122.66°W
Last Update: 1:26 am PDT Apr 13, 2026
Forecast Valid: 6am PDT Apr 13, 2026-6pm PDT Apr 19, 2026
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