


Coastal Waters Forecast
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
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395 FZUS51 KLWX 291734 CWFLWX Coastal Waters Forecast National Weather Service Baltimore MD/Washington DC 134 PM EDT Sun Jun 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- 134 PM EDT Sun Jun 29 2025 .SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY... A weakening cold front will drop south over the waters this evening. The front will dissipate near the area Monday. A stronger cold front may impact the waters Tuesday. Small Craft Advisories may be needed Monday night into Tuesday. No marine hazards are expected Wednesday and Thursday as high pressure returns to the region. In addition, Special Marine Warnings are possible with thunderstorms during the late afternoon and evening hours each day through Tuesday. $$ ANZ535-300800- Tidal Potomac from Key Bridge to Indian Head- 134 PM EDT Sun Jun 29 2025 .THIS AFTERNOON...SW winds 5 kt. Waves less than 1 ft. Tstms likely with a chance of showers. .TONIGHT...SW winds around 5 kt. Waves 1 ft or less. A chance of showers and tstms. .MON...S winds around 5 kt. Waves 1 ft. Showers and tstms likely. .MON NIGHT...S winds 5 kt. Waves less than 1 ft. Showers likely with a chance of tstms. .TUE...SW winds 5 to 10 kt. Waves 1 ft. Showers with a chance of tstms. .TUE NIGHT...SW winds 5 to 10 kt. Waves 1 ft. Showers likely with a chance of tstms. .WED...W winds around 5 kt. Waves 1 ft or less. A chance of showers in the morning. .THU...NW winds around 5 kt. Waves 1 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ536-300800- Tidal Potomac from Indian Head to Cobb Island- 134 PM EDT Sun Jun 29 2025 .THIS AFTERNOON...SE winds 5 kt. Waves less than 1 ft. A chance of showers and tstms. .TONIGHT...SW winds around 5 kt. Waves 1 ft or less. A chance of showers and tstms. .MON...S winds around 5 kt. Waves 1 ft. Showers and tstms likely. .MON NIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms. .TUE...SW winds 10 kt. Waves 1 ft. Showers with a chance of tstms. .TUE NIGHT...SW winds 5 to 10 kt. Waves 1 ft. Showers likely with a chance of tstms. .WED...W winds around 5 kt. Waves 1 ft. A chance of showers in the morning. .THU...W winds around 5 kt. Waves 1 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ537-300800- Tidal Potomac from Cobb Island to Smith Point- 134 PM EDT Sun Jun 29 2025 .THIS AFTERNOON...S winds 5 kt. Waves less than 1 ft. A chance of showers and tstms. .TONIGHT...SW winds around 5 kt. Waves 1 ft or less. A chance of showers and tstms. .MON...S winds 5 to 10 kt. Waves 1 ft or less. A chance of showers and tstms. .MON NIGHT...S winds 10 to 15 kt. Waves 1 to 2 ft. A chance of showers and tstms. .TUE...SW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. Showers likely with a chance of tstms. .TUE NIGHT...W winds 5 to 10 kt. Waves 1 ft. Showers with a chance of tstms. .WED...NW winds 5 to 10 kt...becoming SW. Waves 1 ft or less. A chance of showers through the day. .THU...W winds 5 kt. Waves less than 1 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ530-300800- Chesapeake Bay north of Pooles Island- 134 PM EDT Sun Jun 29 2025 .THIS AFTERNOON...W winds 5 kt. Waves less than 1 ft. A chance of showers and tstms. .TONIGHT...S winds around 5 kt. Waves 1 ft or less. A chance of showers and tstms. .MON...SE winds around 5 kt. Waves 1 ft. Showers and tstms likely. .MON NIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms. .TUE...SW winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft. Showers with a chance of tstms. .TUE NIGHT...W winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms. .WED...W winds around 5 kt. Waves 1 ft. .THU...NW winds around 5 kt. Waves 1 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ531-300800- Chesapeake Bay from Pooles Island to Sandy Point- 134 PM EDT Sun Jun 29 2025 .THIS AFTERNOON...S winds 5 kt. Waves flat. A chance of showers and tstms. .TONIGHT...SW winds around 5 kt. Waves flat. A chance of showers and tstms. .MON...S winds around 5 kt. Waves 1 ft or less. Showers and tstms likely. .MON NIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms. .TUE...SW winds 10 kt. Waves 1 to 2 ft. Showers with a chance of tstms. .TUE NIGHT...W winds 5 to 10 kt. Waves 1 ft. Showers likely with a chance of tstms. .WED...W winds 5 kt. Waves less than 1 ft. .THU...NW winds 5 kt. Waves less than 1 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ538-300800- Patapsco River including Baltimore Harbor- 134 PM EDT Sun Jun 29 2025 .THIS AFTERNOON...SE winds 5 kt. Waves flat. A chance of showers and tstms. .TONIGHT...SW winds around 5 kt. Waves flat. A chance of showers and tstms. .MON...SE winds around 5 kt. Waves 1 ft or less. Showers and tstms likely. .MON NIGHT...S winds 5 kt. Waves less than 1 ft. A chance of showers and tstms. .TUE...SW winds 5 to 10 kt. Waves 1 ft. Showers with a chance of tstms. .TUE NIGHT...W winds 5 to 10 kt. Waves 1 ft or less. A chance of showers and tstms. .WED...W winds around 5 kt. Waves flat. .THU...NW winds around 5 kt. Waves flat. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ539-300800- Chester River to Queenstown MD- 134 PM EDT Sun Jun 29 2025 .THIS AFTERNOON...SW winds 5 kt. Waves flat. A chance of showers and tstms. .TONIGHT...SW winds around 5 kt. Waves flat. A chance of showers and tstms. .MON...S winds around 5 kt. Waves 1 ft or less. Showers and tstms likely. .MON NIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms. .TUE...SW winds 10 kt. Waves 1 ft. Showers with a chance of tstms. .TUE NIGHT...W winds 5 to 10 kt. Waves 1 ft. Showers likely with a chance of tstms. .WED...W winds around 5 kt. Waves 1 ft or less. A chance of showers in the morning. .THU...W winds around 5 kt. Waves 1 ft or less. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ532-300800- Chesapeake Bay from Sandy Point to North Beach- 134 PM EDT Sun Jun 29 2025 .THIS AFTERNOON...SE winds 5 kt. Waves flat. A chance of showers and tstms. .TONIGHT...SW winds around 5 kt. Waves flat. A chance of showers and tstms. .MON...S winds around 5 kt. Waves 1 ft or less. Showers likely with a chance of tstms. .MON NIGHT...S winds 5 to 10 kt. Waves 1 to 2 ft. A chance of showers and tstms. .TUE...SW winds 10 to 15 kt. Waves 2 ft. Showers with a chance of tstms. .TUE NIGHT...SW winds 5 to 10 kt. Waves 1 ft. Showers likely with a chance of tstms. .WED...W winds 5 to 10 kt. Waves 1 ft or less. A chance of showers in the morning. .THU...W winds 5 kt. Waves less than 1 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ540-300800- Eastern Bay- 134 PM EDT Sun Jun 29 2025 .THIS AFTERNOON...SW winds 5 kt. Waves flat. A chance of showers and tstms. .TONIGHT...SW winds around 5 kt. Waves flat. A chance of showers and tstms. .MON...SW winds around 5 kt. Waves 1 ft or less. Showers and tstms likely. .MON NIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms. .TUE...SW winds 10 kt. Waves 1 ft. Showers with a chance of tstms. .TUE NIGHT...W winds 5 to 10 kt. Waves 1 ft. Showers likely with a chance of tstms. .WED...W winds around 5 kt. Waves 1 ft or less. A chance of showers in the morning. .THU...W winds 5 kt. Waves flat. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ533-300800- Chesapeake Bay from North Beach to Drum Point- 134 PM EDT Sun Jun 29 2025 .THIS AFTERNOON...SE winds 5 kt. Waves flat. A chance of showers and tstms. .TONIGHT...SW winds around 5 kt. Waves 1 ft or less. A chance of showers and tstms. .MON...S winds 5 to 10 kt. Waves 1 ft or less. A chance of showers and tstms. .MON NIGHT...S winds 10 to 15 kt. Waves 1 to 2 ft. Showers likely with a chance of tstms. .TUE...SW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. Showers likely with a chance of tstms. .TUE NIGHT...SW winds 5 to 10 kt. Waves 1 to 2 ft. Showers likely with a chance of tstms. .WED...W winds 5 to 10 kt. Waves 1 ft or less. A chance of showers in the morning. .THU...W winds 5 kt. Waves less than 1 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ541-300800- Choptank River to Cambridge MD and the Little Choptank River- 134 PM EDT Sun Jun 29 2025 .THIS AFTERNOON...SW winds 5 kt. Waves flat. A chance of showers and tstms. .TONIGHT...SW winds around 5 kt. Waves flat. A chance of showers and tstms. .MON...SW winds around 5 kt. Waves 1 ft or less. A chance of showers and tstms. .MON NIGHT...S winds 10 to 15 kt. Waves 1 to 2 ft. Showers likely with a chance of tstms. .TUE...SW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. Showers likely with a chance of tstms. .TUE NIGHT...SW winds 5 to 10 kt. Waves 1 ft. Showers likely with a chance of tstms. .WED...W winds 5 to 10 kt. Waves 1 ft or less. A chance of showers in the morning. .THU...W winds 5 kt. Waves less than 1 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ542-300800- Patuxent River to Broomes Island MD- 134 PM EDT Sun Jun 29 2025 .THIS AFTERNOON...SE winds 5 kt. Waves less than 1 ft. A chance of showers and tstms. .TONIGHT...SW winds around 5 kt. Waves 1 ft or less. A chance of showers and tstms. .MON...S winds around 5 kt. Waves 1 ft. A chance of showers and tstms. .MON NIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms. .TUE...SW winds 10 kt. Waves 1 ft. Showers likely with a chance of tstms. .TUE NIGHT...SW winds 5 to 10 kt. Waves 1 ft. Showers with a chance of tstms. .WED...W winds around 5 kt. Waves 1 ft. A chance of showers through the day. .THU...W winds around 5 kt. Waves 1 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ534-300800- Chesapeake Bay from Drum Point to Smith Point- 134 PM EDT Sun Jun 29 2025 .THIS AFTERNOON...SE winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms. .TONIGHT...SW winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms. .MON...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms. .MON NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 to 3 ft. A chance of showers and tstms. .TUE...SW winds 10 to 15 kt with gusts to 20 kt. Waves 2 to 3 ft. A chance of showers and tstms. .TUE NIGHT...W winds 10 to 15 kt. Waves 2 ft. Showers with a chance of tstms. .WED...W winds 5 to 10 kt. Waves 1 ft. Showers likely with a chance of tstms in the morning, then a chance of showers in the afternoon. .THU...W winds 5 to 10 kt. Waves 1 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ543-300800- Tangier Sound and the inland waters surrounding Bloodsworth Island- 134 PM EDT Sun Jun 29 2025 .THIS AFTERNOON...S winds 5 kt. Waves less than 1 ft. A chance of showers and tstms. .TONIGHT...SW winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms. .MON...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms. .MON NIGHT...S winds 10 kt...becoming SW 15 to 20 kt after midnight. Waves 1 to 2 ft. A chance of showers and tstms. .TUE...SW winds 15 to 20 kt. Waves 2 ft. A chance of showers and tstms. .TUE NIGHT...W winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft. Showers with a chance of tstms. .WED...W winds 5 to 10 kt. Waves 1 ft. Showers likely in the morning. A chance of tstms through the day. A chance of showers in the afternoon. .THU...W winds 5 to 10 kt. Waves 1 ft. Winds and waves higher and visibilities lower in and near tstms. $$