NWS Baltimore MD/Washington DCMA.W 0257September 2, 2026
Special Marine Warning: Tidal Potomac from Key Bridge to Indian Head MD and Tidal Potomac from Indian Head to Cobb Island MD
The National Weather Service office in Baltimore MD/Washington issued a special marine warning for Tidal Potomac from Key Bridge to Indian Head MD and Tidal Potomac from Indian Head to Cobb Island MD, which was in force until 3:15 p.m. local time on September 2. It was the 257th special marine warning the NWS office in Baltimore MD/Washington issued in 2026.
ExpiredWarning
In force for 2 hours; it has expired. The agency may have replaced it with a new notice.
The notice
- Issued by
- National Weather Service, Baltimore MD/Washington DC
- Area
- Tidal Potomac from Key Bridge to Indian Head MD and Tidal Potomac from Indian Head to Cobb Island MD
- Level
- Warning
- Issued
- 1:15 p.m. EDT, September 2, 2026
- Expires
- 3:15 p.m. EDT, September 2, 2026
- CAP severity, certainty, urgency
- Severe, Likely, Immediate
- VTEC event
- KLWX MA.W 0257
- Official source
- National Weather Service: the notice at its source
NWS notices, September 2026The latest from the National Weather Service
Source: National Weather Service: the notice at its source. AreaZine rebuilds this page from the agency's record; the agency's page is the one to act on. A U.S. Government work, in the public domain.
The notice as issued
SMWLWX The National Weather Service in Sterling Virginia has issued a * Special Marine Warning for... Tidal Potomac from Indian Head to Cobb Island MD... Tidal Potomac from Key Bridge to Indian Head MD... * Until 315 PM EDT. * At 114 PM EDT, strong thunderstorms were located along a line extending from near Fort Smallwood State Park to 16 nm north of Key Bridge to 24 nm northwest of Tidal Basin to 31 nm northwest of Reagan National Airport, moving south at 25 knots. HAZARD...Wind gusts 34 knots or greater. SOURCE...Radar indicated. IMPACT...Boaters in small craft could be thrown overboard by suddenly higher winds and waves capsizing their vessel. * Locations impacted include... Potomac Creek, Maryland Point, Nanjemoy Creek, Port Tobacco River, Colonial Beach, Leesylvania State Park, National Harbor, Quantico, Tidal Basin, Reagan National Airport, Swan Point, Gunston Hall, Mathias Point, U.S. 301 Nice Memorial Bridge, Mason Neck State Park, Woodrow Wilson Bridge, Indian Head, Occoquan Bay, Fort Hunt, and Popes Creek.
What the agency told people to do
Move to safe harbor immediately as gusty winds and high waves are expected.
Source: National Weather Service: the notice at its source. The text is the agency's, unedited. A U.S. Government work, in the public domain.