Super Typhoon Sinlaku to Impact the Marianas and Guam; Severe Weather Threat from the Central Plains to the Great Lakes

Super Typhoon Sinlaku will bring destructive winds, widespread heavy rain/flooding, and thunderstorms to the Marianas Islands into Wednesday. Tropical Storm conditions are likely over Guam. Severe thunderstorms and heavy rain are likely across the Upper Mississippi Valley and Great Lakes region with potential for large to very large hail, damaging wind, and tornadoes through Tuesday. Read More >

For More Weather Information:

Seattle, WA Local Forecast Office

25NM N Seattle WA

Marine Point Forecast

[NOTICE]

Today
ESE 6kt
< 1ft
Tonight
S 11kt
< 1ft
Tuesday
S 22kt
1-2ft
Tuesday Night
S 22kt⇓
1-2ft
Wednesday
SSE 8kt
< 1ft
Wednesday Night
WNW 8kt
< 1ft
Thursday
SSE 7kt
< 1ft
Thursday Night
Light Wind
< 1ft
Friday
Light Wind
< 1ft

Associated Zone Forecast which includes this point

Last Update: 11:27 pm PDT Apr 12, 2026
Forecast Valid: 9am PDT Apr 13, 2026-6pm PDT Apr 19, 2026

View Nearby Observations

Detailed Forecast

Today

ESE wind around 6 kt becoming NW in the afternoon. Rain likely, mainly before 11am. Waves 1 ft or less.

Tonight

NE wind 5 to 11 kt becoming S after midnight. Rain likely, mainly after 4am. Waves 1 ft or less.

Tuesday

S wind 13 to 22 kt, with gusts as high as 30 kt. Rain. Waves 1 to 2 ft.

Tuesday Night

S wind 17 to 22 kt becoming NNW 9 to 14 kt after midnight. Winds could gust as high as 31 kt. Rain, mainly before 11pm. Waves 1 to 2 ft.

Wednesday

SSE wind 6 to 8 kt becoming W in the afternoon. Rain, mainly between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. Waves 1 ft or less.

Wednesday Night

WNW wind 5 to 8 kt becoming S after midnight. A chance of rain before 11pm. Waves 1 ft or less.

Thursday

SSE wind 5 to 7 kt. Mostly sunny. Waves 1 ft or less.

Thursday Night

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

Friday

Variable winds 5 kt or less. 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.