Coastal Waters Forecast
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
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046 FZUS51 KLWX 092334 CWFLWX Coastal Waters Forecast National Weather Service Baltimore MD/Washington DC 734 PM EDT Sun Mar 9 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. ANZ500-100800- 734 PM EDT Sun Mar 9 2025 .SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY... High pressure will build east across the Mid-Atlantic through Tuesday. A backdoor cold front will move through Wednesday as high pressure builds to the north. A frontal system will likely cross the area Thursday, with high pressure returning Friday. Another, much stronger, frontal system and area of low pressure will push through next weekend. Hazardous boating contditions are not anticipated over the next several days. However, boaters should be aware of the threats of boating in cold water, even when air temperatures are spring-like. Visit weather.gov/safety/coldwater for more info. $$ ANZ535-100800- Tidal Potomac from Key Bridge to Indian Head- 734 PM EDT Sun Mar 9 2025 .TONIGHT...SW winds 5 kt. Waves less than 1 ft. .MON...SW winds around 5 kt. Waves 1 ft. .MON NIGHT...S winds around 5 kt. Waves 1 ft or less. .TUE...SW winds around 5 kt. Waves 1 ft or less. .TUE NIGHT...W winds 5 kt. Waves less than 1 ft. .WED...NE winds 5 kt. Waves less than 1 ft. .WED NIGHT...SE winds around 5 kt. Waves 1 ft. .THU...SE winds around 5 kt. Waves 1 ft. .FRI...SE winds 5 to 10 kt. Waves 1 ft. $$ ANZ536-100800- Tidal Potomac from Indian Head to Cobb Island- 734 PM EDT Sun Mar 9 2025 .TONIGHT...SW winds 5 kt. Waves less than 1 ft. .MON...S winds around 5 kt. Waves 1 ft. .MON NIGHT...SE winds around 5 kt. Waves 1 ft or less. .TUE...SW winds around 5 kt. Waves 1 ft or less. .TUE NIGHT...SW winds 5 to 10 kt...becoming NW after midnight. Waves 1 ft. .WED...NE winds 5 to 10 kt. Waves 1 ft. .WED NIGHT...E winds 5 to 10 kt. Waves 1 ft. .THU...SE winds 5 kt. Waves less than 1 ft. .FRI...SE winds 5 to 10 kt. Waves 1 ft. $$ ANZ537-100800- Tidal Potomac from Cobb Island to Smith Point- 734 PM EDT Sun Mar 9 2025 .TONIGHT...SW winds 5 to 10 kt. Waves 1 ft. .MON...S winds around 5 kt. Waves 1 ft or less. .MON NIGHT...E winds around 5 kt. Waves flat. .TUE...E winds around 5 kt. Waves flat. .TUE NIGHT...S winds 5 to 10 kt...becoming NW after midnight. Waves 1 ft. .WED...N winds 5 to 10 kt. Waves 1 ft. .WED NIGHT...E winds 5 to 10 kt. Waves 1 ft. .THU...SE winds 5 kt. Waves less than 1 ft. .FRI...SE winds 5 to 10 kt. Waves 1 ft. $$ ANZ530-100800- Chesapeake Bay north of Pooles Island- 734 PM EDT Sun Mar 9 2025 .TONIGHT...SW winds 5 to 10 kt. Waves 1 ft. .MON...SW winds 5 kt. Waves less than 1 ft. .MON NIGHT...SE winds around 5 kt. Waves flat. .TUE...S winds 5 to 10 kt. Waves 1 ft. .TUE NIGHT...SW winds 5 to 10 kt...becoming NW after midnight. Waves 1 ft. .WED...N winds 5 to 10 kt. Waves 1 ft. .WED NIGHT...SE winds 5 to 10 kt. Waves 1 ft. .THU...SE winds 5 kt. Waves less than 1 ft. .FRI...SE winds 5 to 10 kt. Waves 1 ft. $$ ANZ531-100800- Chesapeake Bay from Pooles Island to Sandy Point- 734 PM EDT Sun Mar 9 2025 .TONIGHT...SW winds 5 to 10 kt. Waves 1 ft. .MON...SW winds 5 kt. Waves less than 1 ft. .MON NIGHT...S winds around 5 kt. Waves flat. .TUE...SE winds 5 to 10 kt. Waves 1 ft or less. .TUE NIGHT...SW winds 5 to 10 kt...becoming NW after midnight. Waves 1 ft. .WED...N winds 5 to 10 kt. Waves 1 ft. .WED NIGHT...E winds 5 to 10 kt. Waves 1 ft. .THU...SE winds 5 kt. Waves less than 1 ft. .FRI...SE winds 5 to 10 kt. Waves 1 ft. $$ ANZ538-100800- Patapsco River including Baltimore Harbor- 734 PM EDT Sun Mar 9 2025 .TONIGHT...SW winds 5 kt. Waves less than 1 ft. .MON...SW winds 5 kt. Waves flat. .MON NIGHT...SW winds around 5 kt. Waves flat. .TUE...SW winds around 5 kt. Waves 1 ft or less. .TUE NIGHT...W winds 5 kt. Waves less than 1 ft. .WED...NE winds 5 to 10 kt. Waves 1 ft. .WED NIGHT...E winds 5 kt. Waves less than 1 ft. .THU...SE winds 5 kt. Waves less than 1 ft. .FRI...SE winds 5 kt. Waves less than 1 ft. $$ ANZ539-100800- Chester River to Queenstown MD- 734 PM EDT Sun Mar 9 2025 .TONIGHT...SW winds 5 to 10 kt. Waves 1 ft. .MON...SW winds 5 kt. Waves less than 1 ft. .MON NIGHT...S winds around 5 kt. Waves flat. .TUE...S winds around 5 kt. Waves 1 ft or less. .TUE NIGHT...S winds 5 to 10 kt...becoming NW after midnight. Waves 1 ft. .WED...N winds 5 to 10 kt. Waves 1 ft. .WED NIGHT...E winds 5 to 10 kt. Waves 1 ft. .THU...SE winds 5 kt. Waves less than 1 ft. .FRI...SE winds 5 to 10 kt. Waves 1 ft. $$ ANZ532-100800- Chesapeake Bay from Sandy Point to North Beach- 734 PM EDT Sun Mar 9 2025 .TONIGHT...SW winds 5 to 10 kt. Waves 1 ft. .MON...SW winds around 5 kt. Waves 1 ft or less. .MON NIGHT...S winds around 5 kt. Waves flat. .TUE...SE winds around 5 kt. Waves 1 ft or less. .TUE NIGHT...S winds 5 to 10 kt...becoming NW after midnight. Waves 1 ft. .WED...N winds 5 to 10 kt. Waves 1 ft. .WED NIGHT...E winds 5 to 10 kt. Waves 1 ft. .THU...SE winds 5 kt. Waves less than 1 ft. .FRI...SE winds 5 to 10 kt. Waves 1 to 2 ft. $$ ANZ540-100800- Eastern Bay- 734 PM EDT Sun Mar 9 2025 .TONIGHT...SW winds 5 to 10 kt. Waves 1 ft. .MON...SW winds 5 kt. Waves less than 1 ft. .MON NIGHT...SE winds around 5 kt. Waves flat. .TUE...SE winds around 5 kt. Waves 1 ft or less. .TUE NIGHT...S winds 5 to 10 kt...becoming NW after midnight. Waves 1 ft. .WED...N winds 5 to 10 kt. Waves 1 ft. .WED NIGHT...E winds 5 to 10 kt. Waves 1 ft. .THU...SE winds 5 kt. Waves less than 1 ft. .FRI...SE winds 5 to 10 kt. Waves 1 ft. $$ ANZ533-100800- Chesapeake Bay from North Beach to Drum Point- 734 PM EDT Sun Mar 9 2025 .TONIGHT...SW winds 10 kt. Waves 1 ft. .MON...S winds around 5 kt. Waves 1 ft or less. .MON NIGHT...SE winds around 5 kt. Waves flat. .TUE...E winds 5 kt. Waves less than 1 ft. .TUE NIGHT...S winds 5 to 10 kt...becoming NW after midnight. Waves 1 ft. .WED...N winds 5 to 10 kt. Waves 1 to 2 ft. .WED NIGHT...E winds 5 to 10 kt. Waves 1 ft. .THU...SE winds 5 kt. Waves less than 1 ft. .FRI...SE winds 5 to 10 kt. Waves 1 to 2 ft. $$ ANZ541-100800- Choptank River to Cambridge MD and the Little Choptank River- 734 PM EDT Sun Mar 9 2025 .TONIGHT...SW winds 5 to 10 kt. Waves 1 ft. .MON...SW winds 5 kt. Waves less than 1 ft. .MON NIGHT...SE winds around 5 kt. Waves flat. .TUE...SE winds around 5 kt. Waves 1 ft or less. .TUE NIGHT...S winds 5 to 10 kt...becoming NW after midnight. Waves 1 ft. .WED...N winds 5 to 10 kt. Waves 1 ft. .WED NIGHT...E winds 5 to 10 kt. Waves 1 ft. .THU...SE winds 5 kt. Waves less than 1 ft. .FRI...SE winds 5 to 10 kt. Waves 1 ft. $$ ANZ542-100800- Patuxent River to Broomes Island MD- 734 PM EDT Sun Mar 9 2025 .TONIGHT...SW winds 5 kt. Waves less than 1 ft. .MON...SW winds around 5 kt. Waves 1 ft. .MON NIGHT...E winds around 5 kt. Waves 1 ft or less. .TUE...E winds around 5 kt. Waves 1 ft. .TUE NIGHT...S winds 5 kt...becoming NW after midnight. Waves 1 ft. .WED...N winds 5 to 10 kt. Waves 1 ft. .WED NIGHT...E winds 5 to 10 kt. Waves 1 ft. .THU...SE winds 5 kt. Waves less than 1 ft. .FRI...SE winds 5 to 10 kt. Waves 1 ft. $$ ANZ534-100800- Chesapeake Bay from Drum Point to Smith Point- 734 PM EDT Sun Mar 9 2025 .TONIGHT...SW winds 10 kt. Waves 1 ft. .MON...S winds 5 to 10 kt. Waves 1 ft. .MON NIGHT...E winds 5 kt. Waves less than 1 ft. .TUE...W winds 5 kt. Waves less than 1 ft. .TUE NIGHT...S winds 5 to 10 kt...becoming W after midnight. Waves 1 ft. .WED...N winds 5 to 10 kt. Waves 1 to 2 ft. .WED NIGHT...E winds 5 to 10 kt. Waves 1 to 2 ft. .THU...SE winds 5 to 10 kt. Waves 1 ft. .FRI...S winds 10 to 15 kt. Waves 1 to 2 ft. $$ ANZ543-100800- Tangier Sound and the inland waters surrounding Bloodsworth Island- 734 PM EDT Sun Mar 9 2025 .TONIGHT...SW winds 10 kt. Waves 1 ft. .MON...SW winds 5 to 10 kt. Waves 1 ft or less. .MON NIGHT...E winds 5 kt. Waves flat. .TUE...NW winds 5 kt. Waves flat. .TUE NIGHT...S winds 5 to 10 kt...becoming W after midnight. Waves 1 ft. .WED...N winds 5 to 10 kt. Waves 1 ft. .WED NIGHT...E winds 5 to 10 kt. Waves 1 ft. .THU...SE winds 5 to 10 kt. Waves 1 ft. .FRI...S winds 10 to 15 kt. Waves 1 ft. $$