Expires:202609062300;;990577 FZUS51 KLWX 060857 CWFLWX Coastal Waters Forecast National Weather Service Baltimore MD/Washington DC 457 AM EDT Sun Sep 6 2026 Tidal Potomac River and Maryland portion of Chesapeake Bay. Forecasts of wave heights do not include effects of wind direction relative to tidal currents. Expect higher waves when winds are blowing against the tidal flow. Waves flat where waters are iced over. ANZ536-062300- Tidal Potomac from Indian Head to Cobb Island- 457 AM EDT Sun Sep 6 2026 .REST OF THE OVERNIGHT...NE winds 5 kt. Waves less than 1 ft. .TODAY...NE winds 5 to 10 kt. Waves 1 ft. .TONIGHT...NE winds around 5 kt. Waves 1 ft. .MON...NE winds 5 kt. Waves less than 1 ft. .MON NIGHT...S winds around 5 kt. Waves 1 ft. .TUE...SW winds around 5 kt. Waves 1 ft. .TUE NIGHT...S winds 5 to 10 kt. Waves 1 ft. .WED...SW winds 10 to 15 kt. Waves 1 ft. .THU...W winds 5 to 10 kt. Waves 1 ft. A chance of showers. $$