Severe Thunderstorm and Tropical Storm Bertha Impacts

Numerous severe thunderstorms are expected across a broad region from the Ohio Valley to the Mid-Atlantic and Northeast States today into tonight. Swaths of damaging wind gusts are expected and some tornadoes are possible. Bertha is expected to bring tropical storm conditions to portions of the Gulf Coast from the Florida Panhandle westward to southeastern Louisiana later today and Wednesday. Read More >

For More Weather Information:

Seattle, WA Local Forecast Office

20NM SW Seattle WA

Marine Point Forecast

[NOTICE]

This Afternoon
Light Wind
< 1ft
Tonight
NNE 6kt⇓
< 1ft
Wednesday
⇑N 6kt
< 1ft
Wednesday Night
⇑SW 14kt
< 1ft
Thursday
SW 14kt
< 1ft
Thursday Night
SW 12kt
< 1ft
Friday
SSW 7kt
< 1ft
Friday Night
WSW 9kt
< 1ft
Saturday
SSW 11kt
< 1ft

Associated Zone Forecast which includes this point

Last Update: 12:40 pm PDT Jul 21, 2026
Forecast Valid: 2pm PDT Jul 21, 2026-6pm PDT Jul 27, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

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

Tonight

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

Wednesday

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

Wednesday Night

Variable winds less than 5 kt becoming SW 9 to 14 kt after midnight. A slight chance of rain after 4am. Waves 1 ft or less.

Thursday

SW wind 11 to 14 kt. A chance of rain. Waves 1 ft or less.

Thursday Night

SW wind 6 to 12 kt. Mostly clear. Waves 1 ft or less.

Friday

SSW wind around 7 kt. Mostly sunny. Waves 1 ft or less.

Friday Night

WSW wind 7 to 9 kt. Mostly clear. Waves 1 ft or less.

Saturday

SSW wind 9 to 11 kt. Partly sunny. 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.