NWS Baltimore MD/Washington DCMA.W 0250August 30, 2026
Special Marine Warning: Tidal Potomac from Key Bridge to Indian Head 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, which was in force until 9:00 p.m. local time on August 30. It was the 250th special marine warning the NWS office in Baltimore MD/Washington issued in 2026.
ExpiredWarning
In force for 1.5 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
- Level
- Warning
- Issued
- 7:30 p.m. EDT, August 30, 2026
- Expires
- 9:00 p.m. EDT, August 30, 2026
- CAP severity, certainty, urgency
- Severe, Likely, Immediate
- VTEC event
- KLWX MA.W 0250
- Official source
- National Weather Service: the notice at its source
NWS notices, August 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 Key Bridge to Indian Head MD... * Until 900 PM EDT. * At 729 PM EDT, strong thunderstorms were located along a line extending from 14 nm northwest of Tidal Basin to 10 nm west of Key Bridge to 14 nm northwest of Mason Neck State Park, moving east at 15 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... Tidal Basin, Fort Washington, Reagan National Airport, Gunston Hall, Woodrow Wilson Bridge, Key Bridge, Fort Hunt, National Harbor, and Alexandria.
What the agency told people to do
Move to safe harbor until hazardous weather passes.
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.