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NWS Baltimore MD/Washington DCMA.W 0261September 3, 2026

Special Marine Warning: Patapsco River including Baltimore Harbor

The National Weather Service office in Baltimore MD/Washington issued a special marine warning for Patapsco River including Baltimore Harbor, which was in force until 12:00 a.m. local time on September 4. It was the 261st special marine warning the NWS office in Baltimore MD/Washington issued in 2026.

ExpiredWarning

Issued10:53 p.m. EDT, September 3, 2026
In force10:53 p.m. EDT, September 3, 2026
Expired12:00 a.m. EDT, September 4, 2026

In force for 1.1 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
Patapsco River including Baltimore Harbor
Level
Warning
Issued
10:53 p.m. EDT, September 3, 2026
Expires
12:00 a.m. EDT, September 4, 2026
CAP severity, certainty, urgency
Severe, Likely, Immediate
VTEC event
KLWX MA.W 0261
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... Patapsco River including Baltimore Harbor... * Until midnight EDT. * At 1053 PM EDT, a strong thunderstorm was located 23 nm west of Fort Smallwood State Park, moving east 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... Fort Smallwood State Park and North Point State Park.

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