Special Marine Warning for Tidal Potomac from Key Bridge to Cobb Island
This alert is no longer in effect.
NOAA issued it on April 27, 2026, 3 months 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.
The National Weather Service has issued a Special Marine Warning for the Tidal Potomac areas, effective until 7:30 AM EDT on April 19, 2026, due to wind gusts of 34 knots or greater.
Read this weather record in 30 seconds
- Record type
- Special Marine Warning
- Affected area
- Tidal Potomac Region
- Issued
- April 27, 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 3 months ago; use the issuing agency's live warning service for current conditions in Tidal Potomac Region.
Special Marine Warning Alert
Alert Details
The National Weather Service in Baltimore MD/Washington DC has issued a Special Marine Warning, effective from 5:29 AM EDT on April 19, 2026.
Affected Areas
The warning affects the Tidal Potomac from Key Bridge to Indian Head MD and the Tidal Potomac from Indian Head to Cobb Island MD, including locations such as Potomac Creek, Nanjemoy Creek, Swan Point, Gunston Hall, Occoquan Bay, Popes Creek, Maryland Point, Port Tobacco River, Colonial Beach, Leesylvania State Park, Cobb Island, Mathias Point, U.S. 301 Nice Memorial Bridge, Mason Neck State Park, Woodrow Wilson Bridge, Wicomico River, Indian Head, Fort Hunt, Brent Point, and Reagan National Airport.
What You Should Do
Move to safe harbor until hazardous weather passes.
Expected Conditions
Hazards include wind gusts of 34 knots or greater, caused by showers on a cold front moving east at 30 knots.
Timeline
The alert is effective from 5:29 AM EDT on April 19, 2026, and expires at 7:30 AM EDT on the same day.
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 (1,039 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to April 27, 2026.
Frequently Asked Questions
Common questions about this NWS weather alert.