Small Craft Advisory Issued for Potomac and Patapsco Rivers

Hazardous conditions expected until 10 PM EDT, boaters advised to use caution

Mar. 18, 2026 at 2:00am

Got story updates? Submit your updates here. ›

The National Weather Service has issued a Small Craft Advisory for the Tidal Potomac River from Key Bridge to Cobb Island, MD, as well as the Patapsco River including Baltimore Harbor. Northwest winds of 10 to 15 knots with gusts up to 25 knots are expected, creating hazardous conditions for small craft until 10 PM EDT this evening.

Why it matters

Small craft advisories are issued when wind speeds and wave heights may pose a danger to inexperienced boaters or those operating smaller vessels. This advisory is important for recreational boaters and commercial maritime operations in the Baltimore and Washington, D.C. areas.

The details

The National Weather Service is warning that the hazardous conditions will make navigating the Tidal Potomac River and Patapsco River, including Baltimore Harbor, dangerous for small craft. Inexperienced mariners are advised to avoid these waterways until the advisory expires at 10 PM EDT.

  • The Small Craft Advisory is in effect until 10 PM EDT this evening (March 18, 2026).

The players

National Weather Service

The National Oceanic and Atmospheric Administration (NOAA) agency responsible for issuing weather forecasts and warnings, including small craft advisories.

Got photos? Submit your photos here. ›

The takeaway

Boaters in the Baltimore and Washington, D.C. areas should closely monitor weather conditions and heed small craft advisories to ensure their safety on the water.