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

10NM SSW San Francisco CA

Marine Point Forecast

[NOTICE]

    • Today

      Today:N wind 5 to 12 kt becoming WNW in the afternoon. Sunny. Mixed swell...W 3 to 4 ft at 10 seconds and S 2 ft at 11 seconds building to at 14 seconds . Wind waves 1 to 2 ft.

      WNW 12kt
      4ft

      Small Craft Advisory
      Small Craft Advisory

    • Tonight

      Tonight:NW wind 14 to 16 kt. Partly cloudy. Mixed swell...WNW 4 ft at 6 seconds and SSW 1 to 2 ft at 14 seconds. Wind waves around 3 ft.

      NW 16kt
      4-5ft

      Small Craft Advisory
      Small Craft Advisory

    • Tuesday

      Tuesday:WNW wind 12 to 15 kt. Mostly sunny. Mixed swell...WNW 3 to 4 ft at 7 seconds and SSW 1 ft at 14 seconds. Wind waves around 2 ft.

      WNW 15kt
      4ft

    • Tuesday Night

      Tuesday Night:WNW wind around 14 kt. Partly cloudy. Mixed swell...NW 4 ft and SSW 1 to 2 ft. Wind waves around 2 ft.

      WNW 14kt
      4ft

    • Wednesday

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

      NW 14kt
      3ft

    • Wednesday Night

      Wednesday Night:WNW wind 12 to 15 kt, with gusts as high as 21 kt. Mostly cloudy. Mixed swell...WNW 3 ft and SSW 1 ft. Wind waves around 2 ft.

      WNW 15kt
      2-3ft

    • Thursday

      Thursday:NW wind 14 to 19 kt, with gusts as high as 25 kt. Sunny. Mixed swell...WNW 4 to 5 ft and SSW 1 ft. Wind waves 2 to 3 ft.

      NW 19kt
      4-5ft

    • Thursday Night

      Thursday Night:N wind 10 to 16 kt, with gusts as high as 23 kt. Mostly clear. Mixed swell...WNW 5 ft and SSW 1 ft. Wind waves 2 to 3 ft.

      N 16kt
      5ft

    • Friday

      Friday:N wind 7 to 9 kt becoming NW in the afternoon. Sunny. Mixed swell...WNW 3 to 4 ft and SW 2 ft. Wind waves around 1 ft.

      N 9kt
      3-4ft


Associated Zone Forecast which includes this point

Last Update: 1:26 am PDT Apr 13, 2026
Forecast Valid: 8am PDT Apr 13, 2026-6pm PDT Apr 19, 2026

View Nearby Observations

Detailed Forecast


Today
N wind 5 to 12 kt becoming WNW in the afternoon. Sunny. Mixed swell...W 3 to 4 ft at 10 seconds and S 2 ft at 11 seconds building to at 14 seconds . Wind waves 1 to 2 ft.
Tonight
NW wind 14 to 16 kt. Partly cloudy. Mixed swell...WNW 4 ft at 6 seconds and SSW 1 to 2 ft at 14 seconds. Wind waves around 3 ft.
Tuesday
WNW wind 12 to 15 kt. Mostly sunny. Mixed swell...WNW 3 to 4 ft at 7 seconds and SSW 1 ft at 14 seconds. Wind waves around 2 ft.
Tuesday Night
WNW wind around 14 kt. Partly cloudy. Mixed swell...NW 4 ft and SSW 1 to 2 ft. Wind waves around 2 ft.
Wednesday
NW wind around 14 kt. Partly sunny. Mixed swell...WNW 2 to 3 ft and SSW 1 ft. Wind waves around 2 ft.
Wednesday Night
WNW wind 12 to 15 kt, with gusts as high as 21 kt. Mostly cloudy. Mixed swell...WNW 3 ft and SSW 1 ft. Wind waves around 2 ft.
Thursday
NW wind 14 to 19 kt, with gusts as high as 25 kt. Sunny. Mixed swell...WNW 4 to 5 ft and SSW 1 ft. Wind waves 2 to 3 ft.
Thursday Night
N wind 10 to 16 kt, with gusts as high as 23 kt. Mostly clear. Mixed swell...WNW 5 ft and SSW 1 ft. Wind waves 2 to 3 ft.
Friday
N wind 7 to 9 kt becoming NW in the afternoon. Sunny. Mixed swell...WNW 3 to 4 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: 37.62°N 122.51°W
Last Update: 1:26 am PDT Apr 13, 2026
Forecast Valid: 8am PDT Apr 13, 2026-6pm PDT Apr 19, 2026
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