Severe Thunderstorm Watch Issued for Tidal Potomac and Chesapeake Bay Areas
Severe Thunderstorm Watch Issued for Tidal Potomac and Chesapeake Bay Areas
US · Published Aug 31, 2026
• The National Weather Service has issued Severe Thunderstorm Watch 632, effective until 10 PM EDT on Thursday, 27 August
• The affected areas include the Tidal Potomac River and the Maryland portion of the Chesapeake Bay. Current conditions indicate south winds at 10 knots with gusts up to 20 knots, creating waves of 1 to 2 feet. Scattered showers and thunderstorms are expected throughout the evening, with patchy fog reducing visibility to 1 nautical mile or less in some areas. Winds and waves are anticipated to be higher in and near thunderstorms.

Impact & Risks

The severe thunderstorm watch poses risks to marine activities, including reduced visibility due to fog and higher waves near thunderstorms. Boaters and those in the affected areas should exercise caution as strong winds and scattered thunderstorms may lead to hazardous conditions. The potential for sudden weather changes could impact navigation and safety on the water.

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