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 >

Coastal Waters Forecast for Tidal Potomac from Cobb Island MD to Smith Point VA (ANZ537) (Text-Only)
NWS Forecast for: Tidal Potomac from Cobb Island MD to Smith Point VA (ANZ537)
Issued by: National Weather Service Baltimore, MD/Washington, D.C.
Last Update: 227 PM EDT Mon Apr 13 2026
Print




This Afternoon: SW winds 15 kt with gusts to 25 kt. Waves 2 to 3 ft.

Tonight: SW winds 5 to 10 kt. Gusts up to 20 kt early in the evening. Waves 1 to 2 ft.

Tue: SW winds 5 to 10 kt. Waves 1 ft.

Tue Night: SW winds 5 to 10 kt. Waves 1 ft.

Wed: SW winds 5 to 10 kt. Waves 1 ft.

Wed Night: SW winds 5 to 10 kt. Waves 1 ft.

Thu: SW winds 10 to 15 kt. Waves 1 ft.

Fri: W winds 5 to 10 kt. Waves 1 ft or less.







Zone Forecast: Tidal Potomac from Cobb Island MD to Smith Point VA (ANZ537)

Visit your local NWS office at: https://www.weather.gov/lwx