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 >

Hazardous Weather Conditions

Small Craft Advisory in effect from April 14, 05:00 AM PDT until April 15, 05:00 AM PDT

For More Weather Information:

Portland, OR Local Forecast Office

6NM NE Long Beach WA

Marine Point Forecast

[NOTICE]

This Afternoon
W 7kt
< 1ft
Tonight
WSW 7kt
< 1ft
Tuesday
SSW 16kt
< 1ft

Small Craft Advisory
Tuesday Night
SW 16kt
< 1ft

Small Craft Advisory
Wednesday
W 10kt
< 1ft
Wednesday Night
NW 10kt
< 1ft
Thursday
NW 8kt
< 1ft
Thursday Night
NW 9kt
1ft
Friday
Light Wind
1ft

Associated Zone Forecast which includes this point

Last Update: 12:41 pm PDT Apr 13, 2026
Forecast Valid: 12pm PDT Apr 13, 2026-6pm PDT Apr 19, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

W wind around 7 kt. A slight chance of showers between 1pm and 2pm. N swell 0 ft at 0 seconds. Wind waves 1 ft or less.

Tonight

WSW wind 5 to 7 kt. Showers likely, mainly before midnight. N swell 0 ft at 0 seconds. Wind waves 1 ft or less.

Tuesday

SSW wind 9 to 16 kt, with gusts as high as 27 kt. Showers before 10am, then rain between 10am and 11am, then showers and possibly a thunderstorm after 11am. N swell 0 to 1 ft at 0 seconds. Wind waves 1 ft or less.

Tuesday Night

SW wind 6 to 16 kt becoming NNW after midnight. Winds could gust as high as 26 kt. Rain. W swell 1 ft. Wind waves 1 ft or less.

Wednesday

W wind 5 to 10 kt. Rain likely, then showers and possibly a thunderstorm after 11am. WNW swell 1 ft. Wind waves 1 ft or less.

Wednesday Night

NW wind 5 to 10 kt. Showers and possibly a thunderstorm. WNW swell 1 ft. Wind waves 1 ft or less.

Thursday

NW wind 5 to 8 kt. A chance of showers. WNW swell 1 ft. Wind waves 1 ft or less.

Thursday Night

NW wind 5 to 9 kt. A slight chance of rain. NW swell 1 ft. Wind waves 1 ft or less.

Friday

Variable winds 5 kt or less. A slight chance of rain. NW swell 1 ft. Wind waves around 1 ft.

*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.