


Coastal Waters Forecast
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
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729 FZUS51 KLWX 041734 CWFLWX Coastal Waters Forecast National Weather Service Baltimore MD/Washington DC 133 PM EDT Sat Oct 4 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. ANZ500-050800- 133 PM EDT Sat Oct 4 2025 .SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY... High pressure will build offshore this weekend. A cold front will approach from the northwest during the middle of next week. Small Craft Advisories may be needed Tuesday into Wednesday. $$ ANZ535-050800- Tidal Potomac from Key Bridge to Indian Head- 133 PM EDT Sat Oct 4 2025 .THIS AFTERNOON...S winds around 5 kt. Waves 1 ft. .TONIGHT...S winds around 5 kt. Waves 1 ft or less. .SUN...S winds around 5 kt. Waves 1 ft or less. .SUN NIGHT...S winds around 5 kt. Waves 1 ft. .MON...S winds around 5 kt. Waves 1 ft. .MON NIGHT...S winds 5 kt. Waves less than 1 ft. .TUE...S winds 5 to 10 kt. Waves 1 ft. A chance of showers in the evening. Showers likely after midnight. .WED...N winds 5 to 10 kt. Waves 1 ft. Showers likely in the morning. A chance of showers through the night. $$ ANZ536-050800- Tidal Potomac from Indian Head to Cobb Island- 133 PM EDT Sat Oct 4 2025 .THIS AFTERNOON...Light winds. Waves 1 ft or less. .TONIGHT...S winds around 5 kt. Waves 1 ft. .SUN...S winds around 5 kt. Waves 1 ft or less. .SUN NIGHT...S winds around 5 kt. Waves 1 ft. .MON...S winds around 5 kt. Waves 1 ft. .MON NIGHT...S winds 5 kt. Waves less than 1 ft. .TUE...S winds 5 to 10 kt. Waves 1 ft. A chance of showers through the night. .WED...NW winds 5 to 10 kt...becoming N 10 to 15 kt after midnight. Waves 1 ft. A chance of showers. $$ ANZ537-050800- Tidal Potomac from Cobb Island to Smith Point- 133 PM EDT Sat Oct 4 2025 .THIS AFTERNOON...SE winds 5 kt. Waves flat. .TONIGHT...S winds 5 kt. Waves flat. .SUN...S winds around 5 kt. Waves 1 ft or less. .SUN NIGHT...S winds 5 to 10 kt. Waves 1 ft. .MON...S winds 5 to 10 kt. Waves 1 ft or less. .MON NIGHT...S winds 5 to 10 kt. Waves 1 ft. .TUE...S winds 10 to 15 kt. Waves 1 ft. A chance of showers after midnight. .WED...NW winds 10 to 15 kt...becoming N 15 to 20 kt. Waves 1 to 2 ft...building to 3 ft. A chance of showers. $$ ANZ530-050800- Chesapeake Bay north of Pooles Island- 133 PM EDT Sat Oct 4 2025 .THIS AFTERNOON...SW winds 5 kt. Waves flat. .TONIGHT...SW winds around 5 kt. Waves flat. .SUN...SW winds around 5 kt. Waves flat. .SUN NIGHT...S winds around 5 kt. Waves flat. .MON...S winds around 5 kt. Waves 1 ft or less. .MON NIGHT...S winds 5 to 10 kt. Waves 1 ft. .TUE...S winds 10 to 15 kt. Waves 1 ft. A chance of showers in the evening. Showers likely after midnight. .WED...NW winds 10 to 15 kt...becoming N 15 to 20 kt after midnight. Waves 1 ft. Showers likely in the morning. A chance of showers through the night. $$ ANZ531-050800- Chesapeake Bay from Pooles Island to Sandy Point- 133 PM EDT Sat Oct 4 2025 .THIS AFTERNOON...S winds 5 kt. Waves less than 1 ft. .TONIGHT...SW winds around 5 kt. Waves 1 ft or less. .SUN...SW winds around 5 kt. Waves 1 ft or less. .SUN NIGHT...S winds 5 kt. Waves less than 1 ft. .MON...S winds 5 to 10 kt. Waves 1 ft or less. .MON NIGHT...S winds 5 to 10 kt. Waves 1 ft. .TUE...S winds 10 to 15 kt. Waves 1 to 2 ft. A chance of showers in the evening. Showers likely after midnight. .WED...W winds 10 to 15 kt...becoming N 15 to 20 kt. Waves 1 to 2 ft. Showers likely in the morning. A chance of showers through the night. $$ ANZ538-050800- Patapsco River including Baltimore Harbor- 133 PM EDT Sat Oct 4 2025 .THIS AFTERNOON...SE winds 5 kt. Waves flat. .TONIGHT...SW winds around 5 kt. Waves flat. .SUN...S winds around 5 kt. Waves flat. .SUN NIGHT...S winds around 5 kt. Waves flat. .MON...S winds 5 to 10 kt. Waves 1 ft or less. .MON NIGHT...S winds 5 to 10 kt. Waves 1 ft. .TUE...S winds 5 to 10 kt. Waves 1 ft. A chance of showers in the evening. Showers likely after midnight. .WED...N winds 10 to 15 kt. Waves 1 ft. Showers likely in the morning. A chance of showers through the night. $$ ANZ539-050800- Chester River to Queenstown MD- 133 PM EDT Sat Oct 4 2025 .THIS AFTERNOON...S winds 5 kt. Waves flat. .TONIGHT...SW winds around 5 kt. Waves flat. .SUN...SW winds around 5 kt. Waves flat. .SUN NIGHT...S winds around 5 kt. Waves flat. .MON...S winds around 5 kt. Waves 1 ft or less. .MON NIGHT...S winds 5 to 10 kt. Waves 1 ft. .TUE...S winds 10 to 15 kt. Waves 1 ft. A chance of showers in the evening. Showers likely after midnight. .WED...NW winds 10 to 15 kt...becoming N after midnight. Waves 1 to 2 ft. Showers likely in the morning. A chance of showers through the night. $$ ANZ532-050800- Chesapeake Bay from Sandy Point to North Beach- 133 PM EDT Sat Oct 4 2025 .THIS AFTERNOON...S winds 5 kt. Waves flat. .TONIGHT...SW winds 5 kt. Waves less than 1 ft. .SUN...SW winds around 5 kt. Waves 1 ft or less. .SUN NIGHT...S winds 5 to 10 kt. Waves 1 ft. .MON...S winds 5 to 10 kt. Waves 1 ft or less. .MON NIGHT...S winds 5 to 10 kt. Waves 1 ft. .TUE...S winds 10 to 15 kt. Waves 1 to 2 ft. A chance of showers in the evening. Showers likely after midnight. .WED...W winds 10 to 15 kt...becoming N 15 to 20 kt. Waves 1 to 2 ft...building to 3 ft. Showers likely in the morning, then a chance of showers through the night. $$ ANZ540-050800- Eastern Bay- 133 PM EDT Sat Oct 4 2025 .THIS AFTERNOON...S winds 5 kt. Waves flat. .TONIGHT...SW winds around 5 kt. Waves flat. .SUN...SW winds around 5 kt. Waves flat. .SUN NIGHT...S winds 5 kt. Waves flat. .MON...S winds 5 to 10 kt. Waves 1 ft or less. .MON NIGHT...S winds 5 to 10 kt. Waves 1 ft. .TUE...S winds 10 to 15 kt. Waves 1 ft. A chance of showers in the evening. Showers likely after midnight. .WED...NW winds 10 to 15 kt...becoming N 15 to 20 kt. Waves 1 to 2 ft. Showers likely in the morning, then a chance of showers through the night. $$ ANZ533-050800- Chesapeake Bay from North Beach to Drum Point- 133 PM EDT Sat Oct 4 2025 .THIS AFTERNOON...S winds 5 kt. Waves flat. .TONIGHT...SW winds 5 kt. Waves less than 1 ft. .SUN...S winds around 5 kt. Waves 1 ft or less. .SUN NIGHT...S winds 5 to 10 kt. Waves 1 ft. .MON...S winds 5 to 10 kt. Waves 1 ft or less. .MON NIGHT...S winds 5 to 10 kt. Waves 1 ft. .TUE...S winds 10 to 15 kt. Waves 1 to 2 ft. A chance of showers through the night. .WED...W winds 10 to 15 kt...becoming N 20 to 25 kt. Waves 1 ft... building to 3 ft. A chance of showers. $$ ANZ541-050800- Choptank River to Cambridge MD and the Little Choptank River- 133 PM EDT Sat Oct 4 2025 .THIS AFTERNOON...SW winds 5 kt. Waves flat. .TONIGHT...SW winds 5 kt. Waves less than 1 ft. .SUN...SW winds around 5 kt. Waves flat. .SUN NIGHT...S winds 5 kt. Waves less than 1 ft. .MON...S winds 5 to 10 kt. Waves 1 ft or less. .MON NIGHT...S winds 5 to 10 kt. Waves 1 ft. .TUE...S winds 10 to 15 kt. Waves 1 ft. A chance of showers in the evening. Showers likely after midnight. .WED...W winds 10 to 15 kt...becoming N 15 to 20 kt. Waves 1 to 2 ft. Showers likely in the morning, then a chance of showers through the night. $$ ANZ542-050800- Patuxent River to Broomes Island MD- 133 PM EDT Sat Oct 4 2025 .THIS AFTERNOON...S winds 5 kt. Waves less than 1 ft. .TONIGHT...S winds around 5 kt. Waves 1 ft. .SUN...S winds around 5 kt. Waves 1 ft. .SUN NIGHT...S winds around 5 kt. Waves 1 ft. .MON...S winds around 5 kt. Waves 1 ft. .MON NIGHT...S winds 5 to 10 kt. Waves 1 ft. .TUE...S winds 5 to 10 kt. Waves 1 ft. A chance of showers through the night. .WED...NW winds 10 to 15 kt...becoming N. Waves 1 ft. A chance of showers. $$ ANZ534-050800- Chesapeake Bay from Drum Point to Smith Point- 133 PM EDT Sat Oct 4 2025 .THIS AFTERNOON...S winds 5 kt. Waves flat. .TONIGHT...S winds 5 kt. Waves less than 1 ft. .SUN...SW winds around 5 kt. Waves 1 ft or less. .SUN NIGHT...S winds 5 to 10 kt. Waves 1 ft. .MON...S winds 5 to 10 kt. Waves 1 ft. .MON NIGHT...S winds 5 to 10 kt. Waves 1 ft. .TUE...S winds 10 to 15 kt. Waves 1 to 2 ft. A chance of showers after midnight. .WED...W winds 10 to 15 kt...becoming N 15 to 20 kt in the afternoon and evening, then increasing to 20 to 25 kt after midnight. Waves 2 to 3 ft...building to 4 ft. Showers likely through the day. A chance of showers through the night. $$ ANZ543-050800- Tangier Sound and the inland waters surrounding Bloodsworth Island- 133 PM EDT Sat Oct 4 2025 .THIS AFTERNOON...SW winds 5 kt. Waves flat. .TONIGHT...S winds 5 kt. Waves flat. .SUN...SW winds around 5 kt. Waves flat. .SUN NIGHT...S winds 5 to 10 kt. Waves 1 ft. .MON...S winds 5 to 10 kt. Waves 1 ft or less. .MON NIGHT...S winds 5 to 10 kt. Waves 1 ft. .TUE...S winds 10 to 15 kt. Waves 1 to 2 ft. A chance of showers after midnight. .WED...W winds 10 to 15 kt...becoming N 15 to 20 kt. Waves 1 to 2 ft. Showers likely through the day. A chance of showers through the night. $$