Special Marine Warning for Tidal Potomac from Indian Head to Cobb Island MD
This alert is no longer in effect.
NOAA issued it on April 28, 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.
A Special Marine Warning has been issued by NWS Baltimore MD/Washington DC for the Tidal Potomac from Indian Head to Cobb Island MD, effective until 11:45 AM EDT on April 20, 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 from Indian Head to Cobb Island MD
- Issued
- April 28, 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 from Indian Head to Cobb Island MD.
Special Marine Warning Alert
Alert Details
This Special Marine Warning was issued by the National Weather Service (NWS) Baltimore MD/Washington DC. It is effective from 10:47 AM EDT on April 20, 2026, until 11:45 AM EDT on the same day.
Affected Areas
The warning affects the Tidal Potomac from Indian Head to Cobb Island MD, including specific locations such as Potomac Creek, Maryland Point, Nanjemoy Creek, Port Tobacco River, Leesylvania State Park, Quantico, Swan Point, Mathias Point, U.S. 301 Nice Memorial Bridge, Mason Neck State Park, Indian Head, Occoquan Bay, Popes Creek, Brent Point, Smallwood State Park, Widewater, Westmoreland State Park, Cobb Island, Fairview Beach, and Colonial Beach.
What You Should Do
Move to safe harbor immediately as gusty winds and high waves are expected.
Expected Conditions
Hazards include wind gusts of 34 knots or greater. Gust fronts are moving southeast at 25 knots.
Timeline
The alert is effective from 10:47 AM EDT to 11:45 AM EDT on April 20, 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 (1,023 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to April 28, 2026.
Frequently Asked Questions
Common questions about this NWS weather alert.