Special Marine Warning Issued for Tidal Potomac River MD
This alert is no longer in effect.
NOAA issued it on August 17, 2026, 6 days ago. Warnings of this kind stay in effect for hours to a few days, so this page is a historical record of what was issued, not a current warning. For conditions where you are right now, check weather.gov (US), weather.gc.ca (Canada), the Met Office (UK), or the Bureau of Meteorology (Australia).
Areazine synthesizes this NWS weather alert directly from NOAA's official public data feed. See our methodology for full source attribution and refresh cadence.
NWS Baltimore MD/Washington DC has issued a Special Marine Warning for the Tidal Potomac from Key Bridge to Cobb Island MD until 8:45 PM EDT due to strong thunderstorms.
Read this weather record in 30 seconds
- Record type
- Special Marine Warning
- Affected area
- Tidal Potomac River, Maryland
- Issued
- August 17, 2026
- Issuing authority
- NWS Baltimore MD/Washington DC
Marine notices apply to named waters or shoreline zones. They may not describe conditions on land, even when the nearest place name is the same.
Record status: historical. It was issued 6 days ago; use the issuing agency's live warning service for current conditions in Tidal Potomac River, Maryland.
Alert Details
A Special Marine Warning has been issued by the National Weather Service Baltimore MD/Washington DC. The alert is effective from 7:16 PM EDT on August 17, 2026, until 8:45 PM EDT on August 17, 2026.
Affected Areas
The warning covers Tidal Potomac from Key Bridge to Indian Head MD and Tidal Potomac from Indian Head to Cobb Island MD. Locations impacted include Potomac Creek, Maryland Point, Nanjemoy Creek, Port Tobacco River, Leesylvania State Park, Smallwood State Park, Quantico, Swan Point, Gunston Hall, Mathias Point, U.S. 301 Nice Memorial Bridge, Indian Head, Occoquan Bay, Popes Creek, Brent Point, Colonial Beach, Fairview Beach, Dahlgren, and Fort Hunt.
What You Should Do
Move to safe harbor until hazardous weather passes. Move to safe harbor immediately as gusty winds and high waves are expected.
Expected Conditions
At 7:16 PM EDT, strong thunderstorms were located along a line extending from near Fort Hunt to 16 nm west of Aquia Creek, moving east at 25 knots. Hazard includes wind gusts 34 knots or greater, as indicated by radar.
Timeline
The alert is in effect from 7:16 PM EDT until 8:45 PM EDT on August 17, 2026.
Original source: NOAA Official Notice ↗
Related Weather Alerts
All Weather Alerts →Nationwide notices with similar length or severity timing 8
Two Areazine-derived peer sets for this NWS weather alert: nearest notices by body length and by same severity near the same agency date. Peers come from other categories so they are not the same-feed Related list above.
Similar body length
Nearest notices by article body length (1,172 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to August 17, 2026.
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