Tropical Storm Arthur and Heavy Rainfall in the South; Severe Weather in the Midwest

An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana tonight. Intense tornadoes, swaths of damaging gusts, and hail in excess of 2 inches in diameter possible. Tropical Storm Arthur will continue to produce strong winds across coastal Upper Texas and Louisiana tonight, as well as potentially life-threatening flooding across southern Louisiana into Mississippi. Read More >

For More Weather Information:

Seattle, WA Local Forecast Office

22NM NW Seattle WA

Marine Point Forecast

[NOTICE]

Tonight
Light Wind
< 1ft
Thursday
NNW 9kt
< 1ft
Thursday Night
N 6kt⇓
< 1ft
Juneteenth
Light Wind
< 1ft
Friday Night
Light Wind
< 1ft
Saturday
⇑SSE 6kt
< 1ft
Saturday Night
Light Wind
< 1ft
Sunday
⇑N 6kt
< 1ft
Sunday Night
NNW 6kt⇓
< 1ft

Associated Zone Forecast which includes this point

Last Update: 11:26 am PDT Jun 17, 2026
Forecast Valid: 7pm PDT Jun 17, 2026-6pm PDT Jun 24, 2026

View Nearby Observations

Detailed Forecast

Tonight

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

Thursday

NNW wind 5 to 9 kt. Sunny. Waves 1 ft or less.

Thursday Night

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

Juneteenth

Variable winds 5 kt or less. Mostly sunny. Waves 1 ft or less.

Friday Night

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

Saturday

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

Saturday Night

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

Sunday

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

Sunday Night

NNW wind around 6 kt becoming variable and less than 5 kt in the evening. 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.