Coastal Waters Forecast
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
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266 FZUS51 KLWX 092033 CWFLWX Coastal Waters Forecast National Weather Service Baltimore MD/Washington DC 433 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- 433 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. $$ ANZ535-100800- Tidal Potomac from Key Bridge to Indian Head- 433 PM EDT Sun Mar 9 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .REST OF THIS AFTERNOON...W winds 10 kt with gusts to 25 kt. Waves 1 ft. .TONIGHT...SW winds 5 to 10 kt. Waves 1 ft. .MON...SW winds around 5 kt. Waves 1 ft. .MON NIGHT...S winds around 5 kt. Waves 1 ft or less. .TUE...SW winds around 5 kt. Waves 1 ft or less. .TUE NIGHT...W winds 5 kt. Waves less than 1 ft. .WED...E winds around 5 kt. Waves 1 ft. .THU...SE winds around 5 kt. Waves 1 ft. $$ ANZ536-100800- Tidal Potomac from Indian Head to Cobb Island- 433 PM EDT Sun Mar 9 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .REST OF THIS AFTERNOON...W winds 10 kt with gusts to 20 kt. Waves 1 ft. .TONIGHT...SW winds 5 to 10 kt. Waves 1 ft. .MON...S 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...SW winds 5 to 10 kt...becoming NW after midnight. Waves 1 ft. .WED...NE winds 5 to 10 kt...becoming E. Waves 1 ft. .THU...SE winds 5 kt. Waves less than 1 ft. $$ ANZ537-100800- Tidal Potomac from Cobb Island to Smith Point- 433 PM EDT Sun Mar 9 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .REST OF THIS AFTERNOON...W winds 10 kt with gusts to 20 kt. Waves 1 ft. .TONIGHT...SW winds 5 to 10 kt. Waves 1 ft. .MON...S winds around 5 kt. Waves 1 ft or less. .MON NIGHT...E winds around 5 kt. Waves flat. .TUE...E winds around 5 kt. Waves flat. .TUE NIGHT...S winds 5 to 10 kt...becoming NW after midnight. Waves 1 ft. .WED...N winds 5 to 10 kt...becoming E. Waves 1 ft. .THU...SE winds 5 kt. Waves less than 1 ft. $$ ANZ530-100800- Chesapeake Bay north of Pooles Island- 433 PM EDT Sun Mar 9 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .REST OF THIS AFTERNOON...W winds 15 kt with gusts to 25 kt. Waves 2 ft. .TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt early in the evening. 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...becoming SE. Waves 1 ft. .THU...SE winds 5 kt. Waves less than 1 ft. $$ ANZ531-100800- Chesapeake Bay from Pooles Island to Sandy Point- 433 PM EDT Sun Mar 9 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .REST OF THIS AFTERNOON...W winds 15 kt with gusts to 25 kt. Waves 2 ft. .TONIGHT...SW winds 5 to 10 kt. Waves 1 to 2 ft. .MON...SW winds 5 kt. Waves less than 1 ft. .MON NIGHT...E winds around 5 kt. Waves flat. .TUE...SE winds 5 to 10 kt. Waves 1 ft or less. .TUE NIGHT...SW winds 5 to 10 kt...becoming NW after midnight. Waves 1 ft. .WED...N winds 5 to 10 kt...becoming E. Waves 1 ft. .THU...SE winds 5 kt. Waves less than 1 ft. $$ ANZ538-100800- Patapsco River including Baltimore Harbor- 433 PM EDT Sun Mar 9 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .REST OF THIS AFTERNOON...W winds 10 kt with gusts to 25 kt. Waves 1 ft. .TONIGHT...SW winds 5 to 10 kt. Waves 1 ft or less. .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...becoming E. Waves 1 ft. .THU...SE winds 5 kt. Waves less than 1 ft. $$ ANZ539-100800- Chester River to Queenstown MD- 433 PM EDT Sun Mar 9 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .REST OF THIS AFTERNOON...W winds 10 kt with gusts to 20 kt. Waves 2 ft. .TONIGHT...SW winds 5 to 10 kt. Waves 1 to 2 ft. .MON...SW winds 5 kt. Waves less than 1 ft. .MON NIGHT...S winds around 5 kt. Waves flat. .TUE...S winds around 5 kt. Waves 1 ft or less. .TUE NIGHT...S winds 5 to 10 kt...becoming NW after midnight. Waves 1 ft. .WED...N winds 5 to 10 kt...becoming E. Waves 1 ft. .THU...SE winds 5 kt. Waves less than 1 ft. $$ ANZ532-100800- Chesapeake Bay from Sandy Point to North Beach- 433 PM EDT Sun Mar 9 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .REST OF THIS AFTERNOON...W winds 10 kt with gusts to 20 kt. Waves 2 ft. .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...becoming E. Waves 1 ft. .THU...SE winds 5 kt. Waves less than 1 ft. $$ ANZ540-100800- Eastern Bay- 433 PM EDT Sun Mar 9 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .REST OF THIS AFTERNOON...W winds 10 kt with gusts to 20 kt. Waves 2 ft. .TONIGHT...SW winds 5 to 10 kt. Waves 1 ft. .MON...SW winds 5 kt. Waves less than 1 ft. .MON NIGHT...SE winds around 5 kt. Waves flat. .TUE...SE winds around 5 kt. Waves 1 ft or less. .TUE NIGHT...S winds 5 to 10 kt...becoming NW after midnight. Waves 1 ft. .WED...N winds 5 to 10 kt...becoming E. Waves 1 ft. .THU...SE winds 5 kt. Waves less than 1 ft. $$ ANZ533-100800- Chesapeake Bay from North Beach to Drum Point- 433 PM EDT Sun Mar 9 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .REST OF THIS AFTERNOON...W winds 10 kt with gusts to 20 kt. Waves 2 ft. .TONIGHT...SW winds 5 to 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...becoming E. Waves 1 to 2 ft. .THU...SE winds 5 kt. Waves less than 1 ft. $$ ANZ541-100800- Choptank River to Cambridge MD and the Little Choptank River- 433 PM EDT Sun Mar 9 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .REST OF THIS AFTERNOON...W winds 10 kt with gusts to 20 kt. Waves 2 ft. .TONIGHT...SW winds 5 to 10 kt. Waves 1 ft. .MON...SW winds 5 kt. Waves less than 1 ft. .MON NIGHT...SE winds around 5 kt. Waves flat. .TUE...SE winds around 5 kt. Waves 1 ft or less. .TUE NIGHT...S winds 5 to 10 kt...becoming NW after midnight. Waves 1 ft. .WED...N winds 5 to 10 kt...becoming E. Waves 1 ft. .THU...SE winds 5 kt. Waves less than 1 ft. $$ ANZ542-100800- Patuxent River to Broomes Island MD- 433 PM EDT Sun Mar 9 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .REST OF THIS AFTERNOON...W winds 10 kt with gusts to 20 kt. Waves 1 ft. .TONIGHT...SW winds 5 to 10 kt. Waves 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...becoming E. Waves 1 ft. .THU...SE winds 5 kt. Waves less than 1 ft. $$ ANZ534-100800- Chesapeake Bay from Drum Point to Smith Point- 433 PM EDT Sun Mar 9 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .REST OF THIS AFTERNOON...SW winds 10 kt. Waves 2 ft. .TONIGHT...SW winds 5 to 10 kt. Waves 1 to 2 ft. .MON...S winds 5 to 10 kt. Waves 1 ft. .MON NIGHT...E winds 5 kt. Waves less than 1 ft. .TUE...W winds 5 kt. Waves less than 1 ft. .TUE NIGHT...S winds 5 to 10 kt...becoming W after midnight. Waves 1 ft. .WED...N winds 5 to 10 kt...becoming E. Waves 1 to 2 ft. .THU...SE winds 5 to 10 kt. Waves 1 ft. $$ ANZ543-100800- Tangier Sound and the inland waters surrounding Bloodsworth Island- 433 PM EDT Sun Mar 9 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .REST OF THIS AFTERNOON...SW winds 10 kt with gusts to 20 kt. Waves 1 ft. .TONIGHT...SW winds 5 to 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...becoming E. Waves 1 ft. .THU...SE winds 5 to 10 kt. Waves 1 ft. $$