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

Severe Thunderstorms in the Midwest and Arizona; Heat Continues in the Southeast and Southwest

Thunderstorms, some severe, may lead to scattered instances of flash flooding across the Midwest and Ohio Valley and southern Arizona. The threat will shift to the Mid-Atlantic coast on Thursday. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that little-to-no relief from the scorching daytime highs will be available. Read More >

For More Weather Information:

Seattle, WA Local Forecast Office

20NM SW Seattle WA

Marine Point Forecast

[NOTICE]

    • Overnight

      Overnight:Variable winds 5 kt or less. Mostly clear. Waves 1 ft or less.

      Light Wind
      < 1ft

    • Thursday

      Thursday:Variable winds less than 5 kt becoming NNE around 6 kt in the afternoon. Sunny. Waves 1 ft or less.

      ⇑NNE 6kt
      < 1ft

    • Thursday Night

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

      Light Wind
      < 1ft

    • Friday

      Friday:Variable winds 5 kt or less. Increasing clouds. Waves 1 ft or less.

      Light Wind
      < 1ft

    • Friday Night

      Friday Night:Variable winds less than 5 kt becoming SW 5 to 10 kt after midnight. A chance of rain after 11pm. Waves 1 ft or less.

      ⇑SW 10kt
      < 1ft

    • Saturday

      Saturday:SW wind around 12 kt. A chance of rain before 8am, then a chance of showers and thunderstorms between 8am and 11am, then a chance of rain after 11am. Waves 1 ft or less.

      SW 12kt
      < 1ft

    • Saturday Night

      Saturday Night:SSW wind 9 to 12 kt. Mostly cloudy. Waves 1 ft or less.

      SSW 12kt
      < 1ft

    • Sunday

      Sunday:SSW wind around 9 kt. Mostly cloudy. Waves 1 ft or less.

      SSW 9kt
      < 1ft

    • Sunday Night

      Sunday Night:WSW wind around 6 kt becoming variable and less than 5 kt in the evening. Partly cloudy. Waves 1 ft or less.

      WSW 6kt⇓
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 11:26 pm PDT Aug 19, 2026
Forecast Valid: 12am PDT Aug 20, 2026-6pm PDT Aug 26, 2026

View Nearby Observations

Detailed Forecast


Overnight
Variable winds 5 kt or less. Mostly clear. Waves 1 ft or less.
Thursday
Variable winds less than 5 kt becoming NNE around 6 kt in the afternoon. Sunny. Waves 1 ft or less.
Thursday Night
Variable winds 5 kt or less. Mostly clear. Waves 1 ft or less.
Friday
Variable winds 5 kt or less. Increasing clouds. Waves 1 ft or less.
Friday Night
Variable winds less than 5 kt becoming SW 5 to 10 kt after midnight. A chance of rain after 11pm. Waves 1 ft or less.
Saturday
SW wind around 12 kt. A chance of rain before 8am, then a chance of showers and thunderstorms between 8am and 11am, then a chance of rain after 11am. Waves 1 ft or less.
Saturday Night
SSW wind 9 to 12 kt. Mostly cloudy. Waves 1 ft or less.
Sunday
SSW wind around 9 kt. Mostly cloudy. Waves 1 ft or less.
Sunday Night
WSW wind around 6 kt becoming variable and less than 5 kt in the evening. Partly 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: 47.37°N 122.66°W
Last Update: 11:26 pm PDT Aug 19, 2026
Forecast Valid: 12am PDT Aug 20, 2026-6pm PDT Aug 26, 2026
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