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 >

Last Update: 124 AM PDT Mon Apr 13 2026

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For More Weather Information:

Portland, OR Local Forecast Office

7NM SE Long Beach WA

Marine Zone Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY MORNING THROUGH LATE TUESDAY NIGHT...

In The Main Channel


General Seas
5 ft subsiding to 4 ft tuesday morning.

First Ebb
Ebb current of 3.23 kt at 226 am monday. Seas 5 ft.

Second Ebb
Ebb current of 4.08 kt at 235 pm monday. Seas 5 ft.

Third Ebb
Ebb current of 4.13 kt at 310 am tuesday. Seas 4 ft.



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124 AM PDT Mon Apr 13 2026
 
 

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