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21NM S Seattle WA

[NOTICE]

Last Update: 8:01 pm PDT Sep 14, 2025
Forecast Valid: 11pm PDT Sep 14, 2025-6pm PDT Sep 21, 2025

Overnight

S wind around 6 kt becoming variable and less than 5 kt after midnight. Mostly cloudy. Waves 1 ft or less.

Monday

Variable winds less than 5 kt becoming N 5 to 8 kt in the afternoon. Patchy fog between 8am and 9am. Waves 1 ft or less.

Monday Night

N wind around 6 kt becoming variable and less than 5 kt after midnight. Mostly clear. Waves 1 ft or less.

Tuesday

Variable winds 5 kt or less. Sunny. Waves 1 ft or less.

Tuesday Night

Variable winds 5 kt or less. Clear. Waves 1 ft or less.

Wednesday

Variable winds less than 5 kt becoming W 5 to 7 kt in the morning. Sunny. Waves 1 ft or less.

Wednesday Night

NNW wind 5 to 8 kt becoming variable and less than 5 kt after midnight. Partly cloudy. Waves 1 ft or less.

Thursday

Variable winds less than 5 kt becoming N 5 to 9 kt in the afternoon. Sunny. Waves 1 ft or less.

Thursday Night

N wind 5 to 9 kt becoming variable and less than 5 kt in the evening. Mostly clear. Waves 1 ft or less.

*Notices:

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.
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.