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NWS Baltimore MD/Washington DCMA.W 0064May 27, 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 9:45 p.m. local time on May 27. It was the 64th special marine warning the NWS office in Baltimore MD/Washington issued in 2026.

ExpiredWarning

Issued8:18 p.m. EDT, May 27, 2026
In force8:18 p.m. EDT, May 27, 2026
Expired9:45 p.m. EDT, May 27, 2026

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 and Tidal Potomac from Indian Head to Cobb Island MD
Level
Warning
Issued
8:18 p.m. EDT, May 27, 2026
Expires
9:45 p.m. EDT, May 27, 2026
CAP severity, certainty, urgency
Severe, Likely, Immediate
VTEC event
KLWX MA.W 0064
Official source
National Weather Service: the notice at its source

NWS notices, May 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 945 PM EDT. * At 818 PM EDT, a strong thunderstorm was located 16 nm northwest of Leesylvania State Park, moving southeast at 25 knots. HAZARD...Wind gusts 34 knots or greater and small hail. 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, Widewater, Maryland Point, Nanjemoy Creek, Port Tobacco River, Leesylvania State Park, Smallwood State Park, Quantico, Gunston Hall, Mathias Point, U.S. 301 Nice Memorial Bridge, Mason Neck State Park, Indian Head, Occoquan Bay, Popes Creek, Brent Point, and Fairview Beach.

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.

The record around this notice