Severe · Special Marine WarningThis alert has expired. It is kept for reference.

Special Marine Warning issued October 16 at 5:45PM EDT until October 16

Affecting Tidal Potomac from Key Bridge to Indian Head MD; Tidal Potomac from Indian Head to Cobb Island MD

In effect until: Oct 16, 2026, 11:45 PM

Tidal Potomac from Key Bridge to Indian Head MD; Tidal Potomac from Indian Head to Cobb Island MD

Likely impact; effects through 11:45 PM.

Move to safe harbor until hazardous weather passes.

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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 745 PM EDT.

* At 544 PM EDT, strong thunderstorms were located along a line
extending from 29 nm north of Tidal Basin to 26 nm northwest of
Key Bridge to 33 nm northwest of Alexandria to 41 nm northwest of
Leesylvania State Park, moving southeast 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 Washington, Tidal Basin, Reagan National Airport, Gunston
Hall, Mason Neck State Park, Woodrow Wilson Bridge, Indian Head,
Key Bridge, Fort Hunt, National Harbor, and Alexandria.

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Alert data: U.S. National Weather Service / NOAA · Translation: WeatherTranslate™

Special Marine Warning issued October 16 at 5:45PM EDT until October 16

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