Coastal Waters Forecast
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
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860 FZUS51 KLWX 032034 CWFLWX Coastal Waters Forecast National Weather Service Baltimore MD/Washington DC 434 PM EDT Fri Oct 3 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. ANZ500-040800- 434 PM EDT Fri Oct 3 2025 .SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY... High pressure will build southward from eastern Canada through the upcoming weekend. The high will gradually move offshore through early next week. A cold front will approach mid next week. Small Craft Advisories may be needed Tuesday afternoon and evening. $$ ANZ535-040800- Tidal Potomac from Key Bridge to Indian Head- 434 PM EDT Fri Oct 3 2025 .REST OF THIS AFTERNOON...S winds 5 kt. Waves less than 1 ft. .TONIGHT...S winds around 5 kt. Waves 1 ft or less. Patchy fog. Vsby 1 to 3 NM. .SAT...SW winds around 5 kt. Waves 1 ft or less. Patchy fog. Vsby 1 to 3 NM. .SAT NIGHT...S winds around 5 kt. Waves 1 ft or less. .SUN...S winds around 5 kt. Waves 1 ft or less. .SUN NIGHT...S winds around 5 kt. Waves 1 ft. .MON...S winds around 5 kt. Waves 1 ft. .TUE...S winds 5 to 10 kt. Waves 1 ft. A chance of showers after midnight. $$ ANZ536-040800- Tidal Potomac from Indian Head to Cobb Island- 434 PM EDT Fri Oct 3 2025 .REST OF THIS AFTERNOON...SE winds 5 kt. Waves less than 1 ft. .TONIGHT...S winds around 5 kt. Waves 1 ft. .SAT...S winds around 5 kt. Waves flat. Patchy fog. Vsby 1 to 3 NM. .SAT NIGHT...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. .TUE...S winds 5 to 10 kt. Waves 1 ft. A chance of showers after midnight. $$ ANZ537-040800- Tidal Potomac from Cobb Island to Smith Point- 434 PM EDT Fri Oct 3 2025 .REST OF THIS AFTERNOON...SE winds 5 kt. Waves flat. .TONIGHT...S winds around 5 kt. Waves flat. .SAT...SW winds around 5 kt. Waves flat. .SAT NIGHT...S winds around 5 kt. Waves flat. .SUN...S winds around 5 kt. Waves 1 ft or less. .SUN NIGHT...S winds 5 to 10 kt. Waves 1 ft. .MON...S winds 5 to 10 kt. Waves 1 ft or less. .TUE...S winds 5 to 10 kt. Waves 1 ft. $$ ANZ530-040800- Chesapeake Bay north of Pooles Island- 434 PM EDT Fri Oct 3 2025 .REST OF THIS AFTERNOON...SW winds 5 kt. Waves flat. .TONIGHT...SW winds around 5 kt. Waves flat. .SAT...SW winds around 5 kt. Waves flat. .SAT NIGHT...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 5 to 10 kt. Waves 1 ft or less. .TUE...SW winds 10 to 15 kt. Waves 1 ft. A chance of showers through the night. $$ ANZ531-040800- Chesapeake Bay from Pooles Island to Sandy Point- 434 PM EDT Fri Oct 3 2025 .REST OF THIS AFTERNOON...S winds 5 kt. Waves less than 1 ft. .TONIGHT...SW winds 5 kt. Waves flat. .SAT...SW winds around 5 kt. Waves 1 ft or less. .SAT NIGHT...SW winds around 5 kt. Waves 1 ft or less. .SUN...SW winds around 5 kt. Waves 1 ft or less. .SUN NIGHT...S winds 5 kt. Waves less than 1 ft. .MON...S winds 5 to 10 kt. Waves 1 ft or less. .TUE...S winds 10 to 15 kt. Waves 1 to 2 ft. A chance of showers after midnight. $$ ANZ538-040800- Patapsco River including Baltimore Harbor- 434 PM EDT Fri Oct 3 2025 .REST OF THIS AFTERNOON...SE winds 10 kt. Waves 1 ft. .TONIGHT...SW winds around 5 kt. Waves flat. .SAT...SW winds around 5 kt. Waves flat. .SAT NIGHT...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 5 to 10 kt. Waves 1 ft or less. .TUE...S winds 5 to 10 kt. Waves 1 ft. A chance of showers after midnight. $$ ANZ539-040800- Chester River to Queenstown MD- 434 PM EDT Fri Oct 3 2025 .REST OF THIS AFTERNOON...SW winds 5 kt. Waves flat. .TONIGHT...SW winds around 5 kt. Waves flat. .SAT...SW winds around 5 kt. Waves flat. .SAT NIGHT...SW winds 5 kt. Waves flat. .SUN...SW winds around 5 kt. Waves flat. .SUN NIGHT...S winds 5 kt. Waves flat. .MON...S winds 5 to 10 kt. Waves 1 ft or less. .TUE...S winds 5 to 10 kt. Waves 1 ft. A chance of showers after midnight. $$ ANZ532-040800- Chesapeake Bay from Sandy Point to North Beach- 434 PM EDT Fri Oct 3 2025 .REST OF THIS AFTERNOON...S winds 5 kt. Waves flat. .TONIGHT...SW winds 5 kt. Waves less than 1 ft. .SAT...SW winds 5 kt. Waves less than 1 ft. .SAT NIGHT...SW winds 5 to 10 kt. Waves 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. .TUE...S winds 10 to 15 kt. Waves 1 to 2 ft. A chance of showers after midnight. $$ ANZ540-040800- Eastern Bay- 434 PM EDT Fri Oct 3 2025 .REST OF THIS AFTERNOON...SW winds 5 kt. Waves flat. .TONIGHT...SW winds around 5 kt. Waves flat. .SAT...SW winds 5 kt. Waves flat. .SAT NIGHT...SW winds around 5 kt. Waves flat. .SUN...SW winds around 5 kt. Waves flat. .SUN NIGHT...S winds 5 kt. Waves less than 1 ft. .MON...S winds 5 to 10 kt. Waves 1 ft or less. .TUE...S winds 10 to 15 kt. Waves 1 ft. A chance of showers after midnight. $$ ANZ533-040800- Chesapeake Bay from North Beach to Drum Point- 434 PM EDT Fri Oct 3 2025 .REST OF THIS AFTERNOON...SE winds 5 kt. Waves flat. .TONIGHT...SW winds 5 kt. Waves less than 1 ft. .SAT...SW winds around 5 kt. Waves flat. .SAT NIGHT...S winds 5 to 10 kt. Waves 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. .TUE...S winds 10 to 15 kt. Waves 1 to 2 ft. A chance of showers after midnight. $$ ANZ541-040800- Choptank River to Cambridge MD and the Little Choptank River- 434 PM EDT Fri Oct 3 2025 .REST OF THIS AFTERNOON...SW winds 5 kt. Waves flat. .TONIGHT...SW winds around 5 kt. Waves 1 ft or less. .SAT...SW winds around 5 kt. Waves flat. .SAT NIGHT...S winds around 5 kt. Waves 1 ft. .SUN...SW winds around 5 kt. Waves flat. .SUN NIGHT...S winds around 5 kt. Waves 1 ft. .MON...S winds 5 to 10 kt. Waves 1 ft or less. .TUE...S winds 10 to 15 kt. Waves 1 ft. A chance of showers after midnight. $$ ANZ542-040800- Patuxent River to Broomes Island MD- 434 PM EDT Fri Oct 3 2025 .REST OF THIS AFTERNOON...SE winds 5 kt. Waves less than 1 ft. .TONIGHT...S winds around 5 kt. Waves 1 ft. .SAT...SW winds around 5 kt. Waves 1 ft. Patchy fog. Vsby 1 to 3 NM. .SAT NIGHT...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 5 to 10 kt. Waves 1 ft. .TUE...S winds 5 to 10 kt. Waves 1 ft. $$ ANZ534-040800- Chesapeake Bay from Drum Point to Smith Point- 434 PM EDT Fri Oct 3 2025 .REST OF THIS AFTERNOON...S winds 5 kt. Waves flat. .TONIGHT...S winds around 5 kt. Waves flat. .SAT...SW winds around 5 kt. Waves flat. .SAT NIGHT...S winds 5 kt. Waves less than 1 ft. .SUN...S winds around 5 kt. Waves 1 ft or less. .SUN NIGHT...S winds 5 to 10 kt. Waves 1 ft. .MON...S winds 5 to 10 kt. Waves 1 ft. .TUE...S winds 10 to 15 kt. Waves 1 to 2 ft. $$ ANZ543-040800- Tangier Sound and the inland waters surrounding Bloodsworth Island- 434 PM EDT Fri Oct 3 2025 .REST OF THIS AFTERNOON...SW winds 5 kt. Waves flat. .TONIGHT...S winds around 5 kt. Waves flat. .SAT...W winds around 5 kt. Waves flat. .SAT NIGHT...S winds around 5 kt. Waves 1 ft. .SUN...S 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. .TUE...S winds 10 to 15 kt. Waves 1 ft. $$