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Typhoon Sinlaku to Impact the Marianas and Guam; Severe Weather from the Southern Plains to the Great Lakes

Typhoon Sinlaku will bring destructive winds, widespread heavy rain/flooding, thunderstorms, and coastal impacts to the Marianas Islands into Wednesday. Typhoon conditions are likely over CNMI and tropical storm conditions over Guam. Severe thunderstorms and heavy rain are expected from the Southern Plains to the Great Lakes today. Read More >

Hazardous Weather Conditions

For More Weather Information:

Seattle, WA Local Forecast Office

7NM W Seattle WA

Marine Point Forecast

[NOTICE]

    • Today

      Today:S wind 16 to 18 kt, with gusts as high as 32 kt. Rain. Waves 2 to 3 ft.

      S 18kt
      2-3ft

    • Tonight

      Tonight:SSW wind 11 to 16 kt becoming SE 5 to 10 kt after midnight. Winds could gust as high as 28 kt. Rain, mainly before 1am. Waves 1 to 3 ft.

      SSW 16kt⇓
      1-3ft

    • Wednesday

      Wednesday:Variable winds less than 5 kt becoming SSW 5 to 7 kt in the morning. A chance of rain and thunderstorms, then showers and possibly a thunderstorm after 1pm. Waves 1 ft or less.

      ⇑SSW 7kt
      < 1ft

    • Wednesday Night

      Wednesday Night:Variable winds 5 kt or less. Rain likely before 11pm. Waves 1 ft or less.

      Light Wind
      < 1ft

    • Thursday

      Thursday:Variable winds less than 5 kt becoming S around 6 kt in the afternoon. Mostly sunny. Waves 1 ft or less.

      ⇑S 6kt
      < 1ft

    • Thursday Night

      Thursday Night:Variable winds 5 kt or less. Mostly cloudy. Waves 1 ft or less.

      Light Wind
      < 1ft

    • Friday

      Friday:Variable winds 5 kt or less. Partly sunny. Waves 1 ft or less.

      Light Wind
      < 1ft

    • Friday Night

      Friday Night:Variable winds 5 kt or less. Mostly cloudy. Waves 1 ft or less.

      Light Wind
      < 1ft

    • Saturday

      Saturday:Variable winds 5 kt or less. Mostly cloudy. Waves 1 ft or less.

      Light Wind
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 11:27 am PDT Apr 14, 2026
Forecast Valid: 11am PDT Apr 14, 2026-6pm PDT Apr 20, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM PDT THIS AFTERNOON...

Today
S wind 16 to 18 kt, with gusts as high as 32 kt. Rain. Waves 2 to 3 ft.
Tonight
SSW wind 11 to 16 kt becoming SE 5 to 10 kt after midnight. Winds could gust as high as 28 kt. Rain, mainly before 1am. Waves 1 to 3 ft.
Wednesday
Variable winds less than 5 kt becoming SSW 5 to 7 kt in the morning. A chance of rain and thunderstorms, then showers and possibly a thunderstorm after 1pm. Waves 1 ft or less.
Wednesday Night
Variable winds 5 kt or less. Rain likely before 11pm. Waves 1 ft or less.
Thursday
Variable winds less than 5 kt becoming S around 6 kt in the afternoon. Mostly sunny. Waves 1 ft or less.
Thursday Night
Variable winds 5 kt or less. Mostly cloudy. Waves 1 ft or less.
Friday
Variable winds 5 kt or less. Partly sunny. Waves 1 ft or less.
Friday Night
Variable winds 5 kt or less. Mostly cloudy. Waves 1 ft or less.
Saturday
Variable winds 5 kt or less. Mostly cloudy. 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: 47.62°N 122.52°W
Last Update: 11:27 am PDT Apr 14, 2026
Forecast Valid: 11am PDT Apr 14, 2026-6pm PDT Apr 20, 2026
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