Typhoon Sinlaku to Impact the Marianas and Guam; Severe Weather from the Southern Plains to the Great Lakes

Typhoon Sinlaku will bring destructive winds, widespread heavy rain/flooding, thunderstorms, and coastal impacts to the Marianas Islands into Wednesday. Typhoon conditions are likely over CNMI and tropical storm conditions over Guam. Severe thunderstorms and heavy rain are expected from the Southern Plains to the Great Lakes today. Read More >

Hazardous Weather Conditions

Gale Warning in effect from April 14, 02:00 PM PDT until April 14, 11:00 PM PDT

For More Weather Information:

Seattle, WA Local Forecast Office

17NM NNW Seattle WA

Marine Point Forecast

[NOTICE]

This Afternoon
S 16kt
< 1ft
Tonight
WSW 11kt⇓
< 1ft
Wednesday
⇑NNE 6kt
< 1ft
Wednesday Night
Light Wind
< 1ft
Thursday
Light Wind
< 1ft
Thursday Night
Light Wind
< 1ft
Friday
Light Wind
< 1ft
Friday Night
Light Wind
< 1ft
Saturday
Light Wind
< 1ft

Associated Zone Forecast which includes this point

Last Update: 11:27 am PDT Apr 14, 2026
Forecast Valid: 2pm PDT Apr 14, 2026-6pm PDT Apr 20, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM PDT THIS AFTERNOON...

This Afternoon

S wind 14 to 16 kt, with gusts as high as 33 kt. Rain. Waves 1 ft or less.

Tonight

WSW wind 6 to 11 kt becoming variable and less than 5 kt after midnight. Winds could gust as high as 27 kt. Rain likely, mainly before 2am. Waves 1 ft or less.

Wednesday

Variable winds less than 5 kt becoming NNE around 6 kt in the afternoon. Rain and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 4pm, then a chance of showers and thunderstorms after 4pm. Waves 1 ft or less.

Wednesday Night

Variable winds 5 kt or less. A chance of rain before 11pm. Waves 1 ft or less.

Thursday

Variable winds 5 kt or less. 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.

Friday Night

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

Saturday

Variable winds 5 kt or less. Mostly cloudy. 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.