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

Super 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 the Northern Mariana Islands. Severe thunderstorms and heavy rain are expected from the Southern Plains to the Great Lakes through Tuesday. Heavy snow is expected in the Pacific Northwest. Read More >

Hazardous Weather Conditions

Small Craft Advisory in effect from April 14, 06:00 AM PDT until April 15, 02:00 AM PDT

For More Weather Information:

Seattle, WA Local Forecast Office

7NM NW Seattle WA

Marine Point Forecast

[NOTICE]

Tuesday
S 27kt
2-3ft

Small Craft Advisory
Tuesday Night
S 25kt⇓
1-3ft

Small Craft Advisory
Wednesday
S 10kt
< 1ft
Wednesday Night
WNW 8kt⇓
< 1ft
Thursday
S 8kt
< 1ft
Thursday Night
N 6kt⇓
< 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 pm PDT Apr 13, 2026
Forecast Valid: 2am PDT Apr 14, 2026-6pm PDT Apr 20, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM PDT THIS MORNING

Tuesday

S wind 21 to 27 kt. Rain, mainly after 9am. Waves 2 to 3 ft.

Tuesday Night

S wind 20 to 25 kt becoming SSE 8 to 13 kt in the evening. Rain, mainly before 11pm. Waves 1 to 3 ft.

Wednesday

S wind 7 to 10 kt. A chance of rain, then showers and possibly a thunderstorm after 11am. Waves 1 ft or less.

Wednesday Night

WNW wind 5 to 8 kt becoming variable and less than 5 kt in the evening. A chance of rain before 11pm. Waves 1 ft or less.

Thursday

S wind 5 to 8 kt. Mostly sunny. Waves 1 ft or less.

Thursday Night

N wind around 6 kt becoming variable and less than 5 kt after midnight. Mostly 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.