Coastal Waters Forecast
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
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309 FZUS51 KLWX 292334 CWFLWX Coastal Waters Forecast National Weather Service Baltimore MD/Washington DC 734 PM EDT Fri Aug 29 2025 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. ANZ500-300800- 734 PM EDT Fri Aug 29 2025 .SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY... High pressure will return for the weekend and will continue to influence the area into next week. The next front approaches by late next week. $$ ANZ535-300800- Tidal Potomac from Key Bridge to Indian Head- 734 PM EDT Fri Aug 29 2025 .TONIGHT...N winds 5 to 10 kt. Waves 1 ft. .SAT...N winds 5 kt. Waves less than 1 ft. .SAT NIGHT...NE winds around 5 kt. Waves 1 ft or less. .SUN...NE winds around 5 kt. Waves 1 ft. .SUN NIGHT...NE winds around 5 kt. Waves 1 ft or less. .MON...NE winds around 5 kt. Waves 1 ft. .MON NIGHT...E winds around 5 kt. Waves 1 ft. .TUE...E winds around 5 kt. Waves 1 ft. .WED...SE winds 5 to 10 kt. Waves 1 ft. $$ ANZ536-300800- Tidal Potomac from Indian Head to Cobb Island- 734 PM EDT Fri Aug 29 2025 .TONIGHT...N winds 5 kt. Waves less than 1 ft. .SAT...N winds around 5 kt. Waves 1 ft. .SAT NIGHT...NE winds around 5 kt. Waves 1 ft. .SUN...NE winds around 5 kt. Waves 1 ft. .SUN NIGHT...NE winds around 5 kt. Waves 1 ft. .MON...NE winds around 5 kt. Waves 1 ft. .MON NIGHT...E winds around 5 kt. Waves 1 ft. .TUE...E winds around 5 kt. Waves 1 ft. .WED...SE winds 5 to 10 kt. Waves 1 ft. $$ ANZ537-300800- Tidal Potomac from Cobb Island to Smith Point- 734 PM EDT Fri Aug 29 2025 .TONIGHT...N winds 10 kt. Waves 1 ft. .SAT...N winds 5 to 10 kt. Waves 1 ft. .SAT NIGHT...NE winds around 5 kt. Waves 1 ft. .SUN...NE winds 5 to 10 kt. Waves 1 ft. .SUN NIGHT...E winds around 5 kt. Waves 1 ft. .MON...NE winds 5 to 10 kt. Waves 1 ft. .MON NIGHT...E winds 5 to 10 kt. Waves 1 ft. .TUE...E winds 5 to 10 kt...becoming S after midnight. Waves 1 ft. .WED...E winds 5 to 10 kt...becoming SE after midnight. Waves 1 ft. $$ ANZ530-300800- Chesapeake Bay north of Pooles Island- 734 PM EDT Fri Aug 29 2025 .TONIGHT...N winds 10 kt. Waves 1 ft. .SAT...N winds 5 to 10 kt. Waves 1 ft. .SAT NIGHT...N winds 5 kt. Waves less than 1 ft. .SUN...N winds 5 kt. Waves less than 1 ft. .SUN NIGHT...NE winds around 5 kt. Waves 1 ft. .MON...NE winds 5 kt. Waves less than 1 ft. .MON NIGHT...E winds around 5 kt. Waves 1 ft. .TUE...SE winds around 5 kt. Waves 1 ft. .WED...SE winds 5 to 10 kt. Waves 1 ft. $$ ANZ531-300800- Chesapeake Bay from Pooles Island to Sandy Point- 734 PM EDT Fri Aug 29 2025 .TONIGHT...N winds 10 kt. Waves 1 ft. .SAT...N winds 5 to 10 kt. Waves 1 ft. .SAT NIGHT...NE winds 5 kt. Waves less than 1 ft. .SUN...NE winds 5 kt. Waves less than 1 ft. .SUN NIGHT...NE winds around 5 kt. Waves 1 ft or less. .MON...NE winds 5 kt. Waves less than 1 ft. .MON NIGHT...E winds 5 to 10 kt. Waves 1 ft. .TUE...NE winds 5 kt...becoming S. Waves 1 ft or less. .WED...SE winds 5 to 10 kt. Waves 1 ft or less. $$ ANZ538-300800- Patapsco River including Baltimore Harbor- 734 PM EDT Fri Aug 29 2025 .TONIGHT...N winds 5 to 10 kt. Waves 1 ft. .SAT...N winds 5 kt. Waves less than 1 ft. .SAT NIGHT...NE winds around 5 kt. Waves flat. .SUN...NE winds 5 kt. Waves flat. .SUN NIGHT...NE winds around 5 kt. Waves flat. .MON...NE winds 5 kt. Waves flat. .MON NIGHT...E winds around 5 kt. Waves 1 ft or less. .TUE...SE winds around 5 kt. Waves 1 ft or less. .WED...SE winds 5 to 10 kt. Waves 1 ft or less. $$ ANZ539-300800- Chester River to Queenstown MD- 734 PM EDT Fri Aug 29 2025 .TONIGHT...N winds 10 kt. Waves 1 ft. .SAT...N winds 5 to 10 kt. Waves 1 ft. .SAT NIGHT...NE winds around 5 kt. Waves flat. .SUN...NE winds 5 kt. Waves less than 1 ft. .SUN NIGHT...E winds around 5 kt. Waves flat. .MON...NE winds 5 kt. Waves flat. .MON NIGHT...E winds around 5 kt. Waves flat. .TUE...E winds 5 kt. Waves less than 1 ft. .WED...SE winds 5 to 10 kt. Waves 1 ft or less. $$ ANZ532-300800- Chesapeake Bay from Sandy Point to North Beach- 734 PM EDT Fri Aug 29 2025 .TONIGHT...N winds 10 kt. Waves 1 ft. .SAT...N winds 5 to 10 kt. Waves 1 ft. .SAT NIGHT...NE winds 5 kt. Waves flat. .SUN...NE winds 5 kt. Waves less than 1 ft. .SUN NIGHT...E winds around 5 kt. Waves 1 ft or less. .MON...NE winds 5 kt. Waves less than 1 ft. .MON NIGHT...E winds 5 to 10 kt. Waves 1 ft. .TUE...NE winds 5 kt...becoming SE. Waves 1 ft. .WED...SE winds 5 to 10 kt. Waves 1 to 2 ft. $$ ANZ540-300800- Eastern Bay- 734 PM EDT Fri Aug 29 2025 .TONIGHT...N winds 10 kt. Waves 1 ft. .SAT...N winds 5 to 10 kt. Waves 1 ft. .SAT NIGHT...NE winds around 5 kt. Waves flat. .SUN...NE winds 5 kt. Waves less than 1 ft. .SUN NIGHT...E winds around 5 kt. Waves flat. .MON...NE winds 5 kt. Waves less than 1 ft. .MON NIGHT...E winds 5 kt. Waves less than 1 ft. .TUE...E winds 5 kt. Waves less than 1 ft. .WED...SE winds 5 to 10 kt. Waves 1 ft or less. $$ ANZ533-300800- Chesapeake Bay from North Beach to Drum Point- 734 PM EDT Fri Aug 29 2025 .TONIGHT...N winds 10 kt. Waves 1 to 2 ft. .SAT...N winds 5 to 10 kt. Waves 1 ft. .SAT NIGHT...NE winds 5 kt. Waves less than 1 ft. .SUN...NE winds 5 to 10 kt. Waves 1 ft. .SUN NIGHT...E winds 5 kt. Waves less than 1 ft. .MON...NE winds 5 kt. Waves less than 1 ft. .MON NIGHT...E winds 5 to 10 kt. Waves 1 ft. .TUE...NE winds 5 kt...becoming SE. Waves 1 ft. .WED...SE winds 5 to 10 kt. Waves 1 to 2 ft. $$ ANZ541-300800- Choptank River to Cambridge MD and the Little Choptank River- 734 PM EDT Fri Aug 29 2025 .TONIGHT...N winds 10 kt. Waves 1 ft. .SAT...N winds 5 to 10 kt. Waves 1 ft. .SAT NIGHT...NE winds around 5 kt. Waves flat. .SUN...NE winds 5 kt. Waves less than 1 ft. .SUN NIGHT...E winds around 5 kt. Waves 1 ft or less. .MON...NE winds 5 kt. Waves less than 1 ft. .MON NIGHT...E winds 5 to 10 kt. Waves 1 ft. .TUE...NE winds 5 kt...becoming SE. Waves 1 ft. .WED...SE winds 5 to 10 kt. Waves 1 ft or less. $$ ANZ542-300800- Patuxent River to Broomes Island MD- 734 PM EDT Fri Aug 29 2025 .TONIGHT...NW winds 5 kt. Waves less than 1 ft. .SAT...N winds 5 to 10 kt. Waves 1 ft. .SAT NIGHT...NE winds around 5 kt. Waves 1 ft. .SUN...NE winds 5 kt. Waves less than 1 ft. .SUN NIGHT...NE winds around 5 kt. Waves 1 ft. .MON...NE winds around 5 kt. Waves 1 ft. .MON NIGHT...E winds around 5 kt. Waves 1 ft. .TUE...E winds around 5 kt. Waves 1 ft. .WED...E winds 5 to 10 kt...becoming SE after midnight. Waves 1 ft. $$ ANZ534-300800- Chesapeake Bay from Drum Point to Smith Point- 734 PM EDT Fri Aug 29 2025 .TONIGHT...NW winds 10 kt...becoming N late. Waves 1 to 2 ft. .SAT...N winds 5 to 10 kt. Waves 1 to 2 ft. .SAT NIGHT...NE winds 5 kt. Waves less than 1 ft. .SUN...NE winds 5 to 10 kt. Waves 1 ft. .SUN NIGHT...E winds 5 to 10 kt. Waves 1 ft. .MON...NE winds 5 to 10 kt. Waves 1 ft. .MON NIGHT...E winds 5 to 10 kt. Waves 1 ft. .TUE...E winds 5 to 10 kt. Waves 1 ft. .WED...SE winds 5 to 10 kt. Waves 1 to 2 ft. $$ ANZ543-300800- Tangier Sound and the inland waters surrounding Bloodsworth Island- 734 PM EDT Fri Aug 29 2025 .TONIGHT...NW winds 10 kt...becoming N late. Waves 1 ft. .SAT...N winds 5 to 10 kt. Waves 1 ft. .SAT NIGHT...NE winds 5 kt. Waves less than 1 ft. .SUN...NE winds 5 to 10 kt. Waves 1 ft. .SUN NIGHT...E winds 5 to 10 kt. Waves 1 ft. .MON...NE winds 5 to 10 kt. Waves 1 ft. .MON NIGHT...NE winds 5 to 10 kt. Waves 1 ft. .TUE...E winds 5 to 10 kt. Waves 1 ft. .WED...SE winds 5 to 10 kt. Waves 1 ft. $$