Coastal Waters Forecast
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
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943 FZUS51 KLWX 291604 CWFLWX Coastal Waters Forecast National Weather Service Baltimore MD/Washington DC 1204 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- 1204 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. $$ ANZ535-300800- Tidal Potomac from Key Bridge to Indian Head- 1204 PM EDT Fri Aug 29 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING... .THIS AFTERNOON...NW winds 10 kt with gusts to 20 kt. Waves 1 ft. .TONIGHT...N winds 5 to 10 kt. Waves 1 ft. .SAT...N winds 5 kt. Waves less than 1 ft. .SAT NIGHT...NE winds around 5 kt. Waves 1 ft or less. .SUN...NE winds around 5 kt. Waves 1 ft. .SUN NIGHT...NE winds around 5 kt. Waves 1 ft or less. .MON...E winds around 5 kt. Waves 1 ft. .TUE...E winds around 5 kt. Waves 1 ft. $$ ANZ536-300800- Tidal Potomac from Indian Head to Cobb Island- 1204 PM EDT Fri Aug 29 2025 .THIS AFTERNOON...NW winds 10 kt. Waves 1 ft. .TONIGHT...N winds 5 to 10 kt. Waves 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. .TUE...E winds around 5 kt. Waves 1 ft. $$ ANZ537-300800- Tidal Potomac from Cobb Island to Smith Point- 1204 PM EDT Fri Aug 29 2025 .THIS AFTERNOON...NW winds 10 kt. Waves 1 ft. .TONIGHT...N winds 5 to 10 kt. Waves 1 ft. .SAT...N winds 5 to 10 kt. Waves 1 ft. .SAT NIGHT...NE winds around 5 kt. Waves 1 ft. .SUN...NE winds 5 to 10 kt. Waves 1 ft. .SUN NIGHT...E winds around 5 kt. Waves 1 ft. .MON...NE winds 5 to 10 kt. Waves 1 ft. .TUE...E winds 5 to 10 kt...becoming S after midnight. Waves 1 ft. $$ ANZ530-300800- Chesapeake Bay north of Pooles Island- 1204 PM EDT Fri Aug 29 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING... .THIS AFTERNOON...NW winds 10 kt with gusts to 20 kt. Waves 1 ft. .TONIGHT...N winds 5 to 10 kt. Waves 1 ft. .SAT...N winds 5 to 10 kt. Waves 1 ft or less. .SAT NIGHT...N winds 5 kt. Waves flat. .SUN...N winds 5 kt. Waves flat. .SUN NIGHT...NE winds around 5 kt. Waves flat. .MON...E winds around 5 kt. Waves flat. .TUE...SE winds around 5 kt. Waves flat. $$ ANZ531-300800- Chesapeake Bay from Pooles Island to Sandy Point- 1204 PM EDT Fri Aug 29 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING... .THIS AFTERNOON...NW winds 10 kt with gusts to 20 kt. Waves 1 to 2 ft. .TONIGHT...N winds 10 kt. Waves 2 ft. .SAT...N winds 5 to 10 kt. Waves 1 ft. .SAT NIGHT...NE winds 5 kt. Waves less than 1 ft. .SUN...NE winds 5 kt. Waves less than 1 ft. .SUN NIGHT...NE winds around 5 kt. Waves 1 ft or less. .MON...E winds 5 to 10 kt. Waves 1 ft or less. .TUE...NE winds 5 kt...becoming S. Waves 1 ft or less. $$ ANZ538-300800- Patapsco River including Baltimore Harbor- 1204 PM EDT Fri Aug 29 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING... .THIS AFTERNOON...NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. .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...E winds around 5 kt. Waves flat. .TUE...SE winds around 5 kt. Waves 1 ft or less. $$ ANZ539-300800- Chester River to Queenstown MD- 1204 PM EDT Fri Aug 29 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING... .THIS AFTERNOON...NW winds 10 kt with gusts to 20 kt. Waves 2 ft. .TONIGHT...N winds 5 to 10 kt. Waves 2 ft. .SAT...N winds 5 to 10 kt. Waves 1 ft. .SAT NIGHT...NE winds around 5 kt. Waves flat. .SUN...NE winds 5 kt. Waves less than 1 ft. .SUN NIGHT...E winds around 5 kt. Waves flat. .MON...E winds around 5 kt. Waves flat. .TUE...E winds 5 kt. Waves less than 1 ft. $$ ANZ532-300800- Chesapeake Bay from Sandy Point to North Beach- 1204 PM EDT Fri Aug 29 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING... .THIS AFTERNOON...NW winds 10 kt with gusts to 20 kt. Waves 1 ft. .TONIGHT...N winds 10 kt. 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 kt. Waves less than 1 ft. .SUN NIGHT...E winds around 5 kt. Waves 1 ft or less. .MON...E winds 5 to 10 kt. Waves 1 ft or less. .TUE...NE winds 5 kt...becoming SE. Waves 1 ft or less. $$ ANZ540-300800- Eastern Bay- 1204 PM EDT Fri Aug 29 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING... .THIS AFTERNOON...NW winds 10 kt. Waves 1 ft. .TONIGHT...N winds 5 to 10 kt. Waves 1 ft. .SAT...N winds 5 to 10 kt. Waves 1 ft. .SAT NIGHT...NE winds around 5 kt. Waves flat. .SUN...NE winds 5 kt. Waves less than 1 ft. .SUN NIGHT...E winds around 5 kt. Waves flat. .MON...E winds 5 kt. Waves flat. .TUE...E winds 5 kt. Waves less than 1 ft. $$ ANZ533-300800- Chesapeake Bay from North Beach to Drum Point- 1204 PM EDT Fri Aug 29 2025 .THIS AFTERNOON...NW winds 10 kt. Waves 1 ft. .TONIGHT...N winds 5 to 10 kt. 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 kt. Waves less than 1 ft. .MON...NE winds 5 to 10 kt. Waves 1 ft. .TUE...NE winds 5 kt...becoming SE. Waves 1 ft. $$ ANZ541-300800- Choptank River to Cambridge MD and the Little Choptank River- 1204 PM EDT Fri Aug 29 2025 .THIS AFTERNOON...NW winds 10 kt. Waves 1 ft. .TONIGHT...N winds 5 to 10 kt. Waves 1 ft. .SAT...N winds 5 to 10 kt. Waves 1 ft. .SAT NIGHT...NE winds around 5 kt. Waves flat. .SUN...NE winds 5 kt. Waves less than 1 ft. .SUN NIGHT...E winds around 5 kt. Waves 1 ft or less. .MON...NE winds 5 to 10 kt. Waves 1 ft or less. .TUE...NE winds 5 kt...becoming SE. Waves 1 ft. $$ ANZ542-300800- Patuxent River to Broomes Island MD- 1204 PM EDT Fri Aug 29 2025 .THIS AFTERNOON...NW winds 10 kt. Waves 1 ft. .TONIGHT...NW winds 5 to 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 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. .TUE...E winds around 5 kt. Waves 1 ft. $$ ANZ534-300800- Chesapeake Bay from Drum Point to Smith Point- 1204 PM EDT Fri Aug 29 2025 .THIS AFTERNOON...NW winds 10 kt. Waves 1 ft. .TONIGHT...N winds 5 to 10 kt. Waves 1 to 2 ft. .SAT...N winds 5 to 10 kt. Waves 1 to 2 ft. .SAT NIGHT...NE winds 5 kt. Waves less than 1 ft. .SUN...NE winds 5 to 10 kt. Waves 1 ft. .SUN NIGHT...E winds 5 to 10 kt. Waves 1 ft. .MON...NE winds 5 to 10 kt. Waves 1 ft. .TUE...E winds 5 to 10 kt. Waves 1 ft. $$ ANZ543-300800- Tangier Sound and the inland waters surrounding Bloodsworth Island- 1204 PM EDT Fri Aug 29 2025 .THIS AFTERNOON...NW winds 10 kt. Waves 1 ft. .TONIGHT...N winds 5 to 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 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. .TUE...E winds 5 to 10 kt. Waves 1 ft. $$