Heavy Rainfall and Severe Thunderstorm Threats; Heat Risk Expands; Monitoring the Tropics

Flash flooding risks continue for portions of the Four Corners and Great Basin through today. Severe thunderstorms are outlooked from the eastern Great Lakes, southern New England into the mid-Atlantic through Tuesday. Heat risk increases and expands across the center of the nation and across the Ohio Valley and mid-Atlantic this week. Continue to closely monitor tropical development in the Gulf. Read More >

For More Weather Information:

Seattle, WA Local Forecast Office

15NM S Seattle WA

Marine Point Forecast

[NOTICE]

Today
⇑NNW 7kt
< 1ft
Tonight
Light Wind
< 1ft
Tuesday
⇑SW 9kt
< 1ft
Tuesday Night
S 9kt
< 1ft
Wednesday
⇑S 11kt
< 1ft
Wednesday Night
S 9kt
< 1ft
Thursday
⇑SSW 7kt
< 1ft
Thursday Night
SSW 6kt⇓
< 1ft
Friday
Light Wind
< 1ft

Associated Zone Forecast which includes this point

Last Update: 11:26 pm PDT Aug 30, 2026
Forecast Valid: 7am PDT Aug 31, 2026-6pm PDT Sep 6, 2026

View Nearby Observations

Detailed Forecast

Today

Variable winds less than 5 kt becoming NNW 5 to 7 kt in the morning. Mostly sunny. Waves 1 ft or less.

Tonight

Variable winds 5 kt or less. Partly cloudy. Waves 1 ft or less.

Tuesday

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

Tuesday Night

S wind 5 to 9 kt. A chance of rain, mainly after 11pm. Waves 1 ft or less.

Wednesday

Variable winds less than 5 kt becoming S 6 to 11 kt in the morning. Rain, mainly after 11am. Waves 1 ft or less.

Wednesday Night

S wind 6 to 9 kt. Rain. Waves 1 ft or less.

Thursday

Variable winds less than 5 kt becoming SSW 5 to 7 kt in the afternoon. Rain likely before 11am, then showers likely and possibly a thunderstorm after 11am. Waves 1 ft or less.

Thursday Night

SSW wind around 6 kt becoming variable and less than 5 kt in the evening. A chance of rain. Waves 1 ft or less.

Friday

Variable winds 5 kt or less. A chance of rain. 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.