Coastal Waters Forecast
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
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114 FZUS51 KLWX 032034 CWFLWX Coastal Waters Forecast National Weather Service Baltimore MD/Washington DC 434 PM EDT Sun Aug 3 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. ANZ500-040800- 434 PM EDT Sun Aug 3 2025 .SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY... High pressure will continue to build to the north through Tuesday. A frontal system may approach by the middle of the week. SCA conditions are possible at times during the middle to late part of the week. $$ ANZ535-040800- Tidal Potomac from Key Bridge to Indian Head- 434 PM EDT Sun Aug 3 2025 .REST OF THIS AFTERNOON...E winds 5 kt. Waves less than 1 ft. .TONIGHT...E winds around 5 kt. Waves 1 ft or less. .MON...NE winds around 5 kt. Waves 1 ft. .MON NIGHT...S winds around 5 kt. Waves 1 ft or less. .TUE...NE winds around 5 kt. Waves 1 ft. .TUE NIGHT...E winds around 5 kt. Waves 1 ft or less. .WED...E winds 5 to 10 kt. Waves 1 ft. A chance of showers. .THU...E winds 5 to 10 kt. Waves 1 ft. A chance of showers. $$ ANZ536-040800- Tidal Potomac from Indian Head to Cobb Island- 434 PM EDT Sun Aug 3 2025 .REST OF THIS AFTERNOON...E winds 5 kt. Waves less than 1 ft. .TONIGHT...NE winds around 5 kt. Waves 1 ft or less. .MON...NE winds around 5 kt. Waves 1 ft. .MON NIGHT...S winds around 5 kt. Waves 1 ft or less. .TUE...NE winds around 5 kt. Waves 1 ft. .TUE NIGHT...E winds around 5 kt. Waves 1 ft. .WED...E winds 5 to 10 kt. Waves 1 ft. A chance of showers. .THU...E winds 5 to 10 kt. Waves 1 ft. A chance of showers. $$ ANZ537-040800- Tidal Potomac from Cobb Island to Smith Point- 434 PM EDT Sun Aug 3 2025 .REST OF THIS AFTERNOON...NE winds 10 kt. Waves 1 ft. .TONIGHT...NE winds 5 to 10 kt. Waves 1 ft. .MON...NE winds 5 to 10 kt. Waves 1 ft. .MON NIGHT...S winds around 5 kt. Waves 1 ft. .TUE...NE winds around 5 kt. Waves 1 ft. .TUE NIGHT...E winds 5 to 10 kt. Waves 1 ft. .WED...E winds 5 to 10 kt. Waves 1 to 2 ft. A chance of showers through the night. .THU...E winds 10 to 15 kt. Waves 2 ft. A chance of showers. $$ ANZ530-040800- Chesapeake Bay north of Pooles Island- 434 PM EDT Sun Aug 3 2025 .REST OF THIS AFTERNOON...E winds 5 kt. Waves less than 1 ft. .TONIGHT...SE winds around 5 kt. Waves 1 ft or less. .MON...N winds around 5 kt. Waves 1 ft. .MON NIGHT...W winds around 5 kt. Waves 1 ft or less. .TUE...NE winds around 5 kt. Waves 1 ft. .TUE NIGHT...E winds 5 kt. Waves less than 1 ft. .WED...E winds 5 to 10 kt. Waves 1 ft. .THU...E winds 5 to 10 kt. Waves 1 ft. $$ ANZ531-040800- Chesapeake Bay from Pooles Island to Sandy Point- 434 PM EDT Sun Aug 3 2025 .REST OF THIS AFTERNOON...NE winds 5 kt. Waves less than 1 ft. .TONIGHT...E winds around 5 kt. Waves flat. .MON...NE winds around 5 kt. Waves flat. .MON NIGHT...SW winds around 5 kt. Waves flat. .TUE...NE winds 5 kt. Waves less than 1 ft. .TUE NIGHT...E winds 5 kt. Waves less than 1 ft. .WED...E winds 5 to 10 kt. Waves 1 ft. A chance of showers after midnight. .THU...E winds 5 to 10 kt. Waves 1 ft. A chance of showers. $$ ANZ538-040800- Patapsco River including Baltimore Harbor- 434 PM EDT Sun Aug 3 2025 .REST OF THIS AFTERNOON...E winds 5 kt. Waves flat. .TONIGHT...SE winds around 5 kt. Waves flat. .MON...NE winds around 5 kt. Waves flat. .MON NIGHT...SW winds around 5 kt. Waves flat. .TUE...NE winds around 5 kt. Waves 1 ft or less. .TUE NIGHT...E winds around 5 kt. Waves 1 ft or less. .WED...E winds 5 to 10 kt. Waves 1 ft. A chance of showers through the night. .THU...E winds 5 to 10 kt. Waves 1 ft. A chance of showers. $$ ANZ539-040800- Chester River to Queenstown MD- 434 PM EDT Sun Aug 3 2025 .REST OF THIS AFTERNOON...NE winds 5 kt. Waves flat. .TONIGHT...E winds around 5 kt. Waves flat. .MON...N winds around 5 kt. Waves flat. .MON NIGHT...SW winds around 5 kt. Waves flat. .TUE...NE winds around 5 kt. Waves flat. .TUE NIGHT...E winds 5 kt. Waves flat. .WED...E winds 5 to 10 kt. Waves 1 ft. A chance of showers after midnight. .THU...E winds 5 to 10 kt. Waves 1 ft. A chance of showers. $$ ANZ532-040800- Chesapeake Bay from Sandy Point to North Beach- 434 PM EDT Sun Aug 3 2025 .REST OF THIS AFTERNOON...NE winds 5 kt. Waves less than 1 ft. .TONIGHT...E winds around 5 kt. Waves 1 ft or less. .MON...N winds around 5 kt. Waves flat. .MON NIGHT...S winds around 5 kt. Waves flat. .TUE...NE winds 5 kt. Waves less than 1 ft. .TUE NIGHT...E winds 5 to 10 kt. Waves 1 ft. .WED...E winds 5 to 10 kt. Waves 1 ft. A chance of showers after midnight. .THU...E winds 10 to 15 kt. Waves 1 to 2 ft. A chance of showers. $$ ANZ540-040800- Eastern Bay- 434 PM EDT Sun Aug 3 2025 .REST OF THIS AFTERNOON...NE winds 5 kt. Waves flat. .TONIGHT...E winds around 5 kt. Waves flat. .MON...N winds around 5 kt. Waves flat. .MON NIGHT...S winds around 5 kt. Waves flat. .TUE...NE winds around 5 kt. Waves flat. .TUE NIGHT...E winds 5 kt. Waves less than 1 ft. .WED...E winds 5 to 10 kt. Waves 1 ft. A chance of showers through the night. .THU...E winds 5 to 10 kt. Waves 1 ft. A chance of showers. $$ ANZ533-040800- Chesapeake Bay from North Beach to Drum Point- 434 PM EDT Sun Aug 3 2025 .REST OF THIS AFTERNOON...NE winds 5 kt. Waves less than 1 ft. .TONIGHT...E winds around 5 kt. Waves 1 ft. .MON...N winds 5 kt. Waves less than 1 ft. .MON NIGHT...S winds around 5 kt. Waves 1 ft or less. .TUE...NE winds 5 kt. Waves less than 1 ft. .TUE NIGHT...E winds 5 to 10 kt. Waves 1 ft. .WED...E winds 5 to 10 kt. Waves 1 to 2 ft. A chance of showers through the night. .THU...E winds 10 to 15 kt. Waves 2 ft. A chance of showers. $$ ANZ541-040800- Choptank River to Cambridge MD and the Little Choptank River- 434 PM EDT Sun Aug 3 2025 .REST OF THIS AFTERNOON...NE winds 5 kt. Waves less than 1 ft. .TONIGHT...E winds around 5 kt. Waves 1 ft or less. .MON...NE winds 5 kt. Waves less than 1 ft. .MON NIGHT...S winds around 5 kt. Waves flat. .TUE...NE winds around 5 kt. Waves flat. .TUE NIGHT...E winds 5 to 10 kt. Waves 1 ft. .WED...E winds 5 to 10 kt. Waves 1 ft. A chance of showers after midnight. .THU...E winds 10 to 15 kt. Waves 1 ft. A chance of showers. $$ ANZ542-040800- Patuxent River to Broomes Island MD- 434 PM EDT Sun Aug 3 2025 .REST OF THIS AFTERNOON...NE winds 5 kt. Waves less than 1 ft. .TONIGHT...NE winds around 5 kt. Waves 1 ft. .MON...N winds around 5 kt. Waves 1 ft. .MON NIGHT...S winds around 5 kt. Waves 1 ft. .TUE...NE winds around 5 kt. Waves 1 ft. .TUE NIGHT...E winds 5 kt. Waves less than 1 ft. .WED...E winds 5 to 10 kt. Waves 1 ft. A chance of showers through the night. .THU...E winds 5 to 10 kt. Waves 1 ft. A chance of showers. $$ ANZ534-040800- Chesapeake Bay from Drum Point to Smith Point- 434 PM EDT Sun Aug 3 2025 .REST OF THIS AFTERNOON...NE winds 10 kt. Waves 1 ft. .TONIGHT...NE winds 5 to 10 kt. Waves 1 ft. .MON...NE winds 5 to 10 kt. Waves 1 ft. .MON NIGHT...E winds 5 kt. Waves less than 1 ft. .TUE...NE winds 5 kt. Waves less than 1 ft. .TUE NIGHT...E winds 5 to 10 kt. Waves 1 ft. .WED...E winds 10 to 15 kt. Waves 1 to 2 ft. A chance of showers through the night. .THU...E winds 10 to 15 kt. Waves 2 ft. A chance of showers. $$ ANZ543-040800- Tangier Sound and the inland waters surrounding Bloodsworth Island- 434 PM EDT Sun Aug 3 2025 .REST OF THIS AFTERNOON...NE winds 10 kt. Waves 1 ft. .TONIGHT...NE 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 or less. .TUE...NE winds 5 to 10 kt. Waves 1 ft. .TUE NIGHT...E winds 5 to 10 kt. Waves 1 ft. .WED...E winds 10 to 15 kt. Waves 1 ft. A chance of showers after midnight. .THU...E winds 10 to 15 kt. Waves 1 ft. A chance of showers. $$