Coastal Waters Forecast
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
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155 FZUS51 KLWX 032357 CWFLWX Coastal Waters Forecast National Weather Service Baltimore MD/Washington DC 657 PM EST Wed Dec 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. ANZ500-040900- 657 PM EST Wed Dec 3 2025 .SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY... High pressure will remain nearby through tonight. A reinforcing cold front will cross the Mid-Atlantic Thursday afternoon and evening. Low pressure will likely track offshore of the Carolinas into the Atlantic Ocean Friday into Saturday, but there is considerable uncertainty as to how far north the low and its associated precipitation gets. A couple of clipper-like systems may affect the area heading into early next week. $$ ANZ535-040900- Tidal Potomac from Key Bridge to Indian Head- 657 PM EST Wed Dec 3 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM THURSDAY MORNING THROUGH THURSDAY EVENING... .TONIGHT...SW winds 5 kt. Waves less than 1 ft. .THU...NW winds 5 to 10 kt. Gusts up to 20 kt in the late morning and afternoon. Waves 1 ft. .THU NIGHT...N winds 5 to 10 kt. Waves 1 ft. .FRI...SE winds around 5 kt. Waves 1 ft. A chance of snow. .FRI NIGHT...N winds around 5 kt. Waves 1 ft or less. A chance of snow. .SAT...Light winds. Waves 1 ft or less. .SAT NIGHT...NW winds around 5 kt. Waves 1 ft or less. .SUN...N winds around 5 kt. Waves 1 ft. .MON...N winds 5 to 10 kt. Waves 1 ft. $$ ANZ536-040900- Tidal Potomac from Indian Head to Cobb Island- 657 PM EST Wed Dec 3 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM THURSDAY AFTERNOON THROUGH THURSDAY EVENING... .TONIGHT...SW winds 5 to 10 kt. Waves 1 ft. .THU...NW winds 5 to 10 kt. Gusts up to 20 kt in the late morning and afternoon. Waves 1 ft. .THU NIGHT...N winds 10 to 15 kt with gusts to 20 kt...becoming NE 5 kt late. Waves 1 ft. .FRI...E winds around 5 kt. Waves 1 ft. Snow likely. .FRI NIGHT...N winds around 5 kt. Waves 1 ft. A chance of rain and snow. .SAT...W winds around 5 kt. Waves flat. .SAT NIGHT...NW winds around 5 kt. Waves 1 ft or less. .SUN...N winds 5 to 10 kt. Waves 1 ft. .MON...N winds 5 to 10 kt. Waves 1 ft. $$ ANZ537-040900- Tidal Potomac from Cobb Island to Smith Point- 657 PM EST Wed Dec 3 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM THURSDAY AFTERNOON THROUGH THURSDAY EVENING... .TONIGHT...SW winds 5 to 10 kt. Waves 1 ft. .THU...NW winds 10 to 15 kt. Gusts up to 20 kt. Waves 1 to 2 ft. .THU NIGHT...N winds 10 to 15 kt with gusts to 25 kt...becoming NE 5 to 10 kt late. Waves 2 ft. .FRI...E winds 5 to 10 kt. Waves 1 ft. Snow. .FRI NIGHT...N winds 5 kt. Waves less than 1 ft. A chance of rain. .SAT...NW winds around 5 kt. Waves 1 ft. .SAT NIGHT...NW winds around 5 kt. Waves 1 ft or less. .SUN...N winds 10 to 15 kt. Waves 1 to 2 ft. .MON...N winds 10 to 15 kt. Waves 1 to 2 ft. $$ ANZ530-040900- Chesapeake Bay north of Pooles Island- 657 PM EST Wed Dec 3 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM THURSDAY MORNING THROUGH THURSDAY EVENING... .TONIGHT...W winds 5 to 10 kt. Waves 1 ft. .THU...W winds 10 to 15 kt. Gusts up to 20 kt... increasing to 25 kt in the afternoon. Waves 1 to 2 ft. .THU NIGHT...N winds 10 to 15 kt with gusts to 25 kt...becoming NE 5 kt late. Waves 1 to 2 ft. .FRI...SE winds 5 kt. Waves less than 1 ft. A chance of snow. .FRI NIGHT...N winds around 5 kt. Waves 1 ft. A chance of snow. .SAT...W winds around 5 kt. Waves 1 ft. .SAT NIGHT...NW winds around 5 kt. Waves 1 ft. .SUN...N winds 5 to 10 kt. Waves 1 ft. .MON...N winds 10 to 15 kt. Waves 1 ft. $$ ANZ531-040900- Chesapeake Bay from Pooles Island to Sandy Point- 657 PM EST Wed Dec 3 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM THURSDAY MORNING THROUGH THURSDAY EVENING... .TONIGHT...W winds 10 kt. Waves 1 ft. .THU...NW winds 15 to 20 kt with gusts to 25 kt. Waves 2 to 3 ft. .THU NIGHT...NW winds 15 to 20 kt with gusts to 25 kt...becoming N 5 to 10 kt after midnight. Waves 2 to 3 ft. .FRI...SE winds 5 to 10 kt. Waves 1 ft. A chance of snow. .FRI NIGHT...N winds 5 kt. Waves flat. A chance of snow. .SAT...W winds 5 kt. Waves flat. .SAT NIGHT...NW winds 5 kt. Waves less than 1 ft. .SUN...N winds 10 to 15 kt. Waves 1 to 2 ft. .MON...N winds 10 to 15 kt. Waves 1 to 2 ft. $$ ANZ538-040900- Patapsco River including Baltimore Harbor- 657 PM EST Wed Dec 3 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM THURSDAY MORNING THROUGH THURSDAY EVENING... .TONIGHT...W winds 5 kt. Waves less than 1 ft. .THU...W winds 10 to 15 kt. Gusts up to 20 kt... increasing to 25 kt late. Waves 1 ft. .THU NIGHT...NW winds 10 to 15 kt with gusts to 20 kt...becoming N 5 kt after midnight. Waves 1 ft. .FRI...SE winds 5 kt. Waves less than 1 ft. A chance of snow. .FRI NIGHT...N winds around 5 kt. Waves flat. A chance of snow. .SAT...W winds around 5 kt. Waves flat. .SAT NIGHT...NW winds around 5 kt. Waves flat. .SUN...N winds 5 to 10 kt. Waves 1 ft or less. .MON...N winds 5 to 10 kt. Waves 1 ft or less. $$ ANZ539-040900- Chester River to Queenstown MD- 657 PM EST Wed Dec 3 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM THURSDAY MORNING THROUGH THURSDAY EVENING... .TONIGHT...SW winds 5 to 10 kt. Waves 1 ft. .THU...NW winds 15 to 20 kt with gusts to 25 kt. Waves 2 to 3 ft. .THU NIGHT...NW winds 15 to 20 kt with gusts to 25 kt...becoming N 5 to 10 kt after midnight. Waves 2 to 3 ft. .FRI...E winds 5 to 10 kt. Waves 1 ft or less. Snow likely. .FRI NIGHT...NE winds 5 kt. Waves flat. A chance of rain and snow. .SAT...NW winds 5 kt. Waves flat. .SAT NIGHT...NW winds around 5 kt. Waves 1 ft or less. .SUN...N winds 10 to 15 kt. Waves 1 ft. .MON...N winds 10 to 15 kt. Waves 1 to 2 ft. $$ ANZ532-040900- Chesapeake Bay from Sandy Point to North Beach- 657 PM EST Wed Dec 3 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM THURSDAY MORNING THROUGH THURSDAY EVENING... .TONIGHT...SW winds 10 kt. Waves 1 ft. .THU...NW winds 15 to 20 kt with gusts to 25 kt. Waves 2 to 3 ft. .THU NIGHT...NW winds 15 to 20 kt with gusts to 25 kt...becoming N 10 kt after midnight. Waves 2 to 3 ft. .FRI...E winds 5 to 10 kt. Waves 1 ft. Snow likely. .FRI NIGHT...N winds 5 kt. Waves less than 1 ft. A chance of rain and snow. .SAT...W winds 5 kt. Waves flat. .SAT NIGHT...NW winds 5 kt. Waves less than 1 ft. .SUN...N winds 10 to 15 kt. Waves 1 to 2 ft. .MON...N winds 10 to 15 kt. Waves 1 to 2 ft. $$ ANZ540-040900- Eastern Bay- 657 PM EST Wed Dec 3 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM THURSDAY MORNING THROUGH THURSDAY EVENING... .TONIGHT...SW winds 5 to 10 kt. Waves 1 ft. .THU...NW winds 10 to 15 kt with gusts to 25 kt. Waves 1 to 2 ft. .THU NIGHT...N winds 10 to 15 kt with gusts to 25 kt...becoming NE 5 to 10 kt late. Waves 1 to 2 ft. .FRI...E winds 5 to 10 kt. Waves 1 ft or less. Snow likely. .FRI NIGHT...N winds 5 kt. Waves flat. A chance of rain and snow. .SAT...NW winds around 5 kt. Waves flat. .SAT NIGHT...NW winds 5 kt. Waves flat. .SUN...N winds 10 to 15 kt. Waves 1 ft. .MON...N winds 10 to 15 kt. Waves 1 ft. $$ ANZ533-040900- Chesapeake Bay from North Beach to Drum Point- 657 PM EST Wed Dec 3 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM THURSDAY MORNING THROUGH THURSDAY EVENING... .TONIGHT...SW winds 10 kt. Waves 1 ft. .THU...NW winds 15 to 20 kt with gusts to 25 kt. Waves 2 to 3 ft. .THU NIGHT...N winds 15 to 20 kt with gusts to 25 kt...becoming NE 10 kt late. Waves 2 to 3 ft. .FRI...E winds 5 to 10 kt. Waves 1 ft. Snow likely. .FRI NIGHT...N winds 5 to 10 kt. Waves 1 ft. A chance of rain and snow. .SAT...NW winds 5 kt. Waves less than 1 ft. .SAT NIGHT...NW winds 5 to 10 kt. Waves 1 ft or less. .SUN...N winds 10 to 15 kt. Waves 1 to 2 ft. .MON...N winds 10 to 15 kt. Waves 2 ft. $$ ANZ541-040900- Choptank River to Cambridge MD and the Little Choptank River- 657 PM EST Wed Dec 3 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM THURSDAY MORNING THROUGH THURSDAY EVENING... .TONIGHT...SW winds 10 kt. Waves 1 ft. .THU...NW winds 15 to 20 kt with gusts to 25 kt. Waves 2 to 3 ft. .THU NIGHT...N winds 15 to 20 kt with gusts to 25 kt...becoming NE 5 to 10 kt late. Waves 3 ft... subsiding to 1 ft after midnight. .FRI...E winds 5 to 10 kt. Waves 1 ft. Snow likely. .FRI NIGHT...N winds 5 kt. Waves less than 1 ft. A chance of rain and snow. .SAT...NW winds 5 kt. Waves less than 1 ft. .SAT NIGHT...NW winds around 5 kt. Waves 1 ft or less. .SUN...N winds 10 to 15 kt. Waves 1 to 2 ft. .MON...N winds 10 to 15 kt. Waves 1 to 2 ft. $$ ANZ542-040900- Patuxent River to Broomes Island MD- 657 PM EST Wed Dec 3 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM THURSDAY AFTERNOON THROUGH THURSDAY EVENING... .TONIGHT...SW winds 5 kt. Waves less than 1 ft. .THU...NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. .THU NIGHT...N winds 10 to 15 kt with gusts to 25 kt...becoming NE 5 to 10 kt late. Waves 1 ft. .FRI...E winds 5 kt. Waves less than 1 ft. Snow. .FRI NIGHT...N winds 5 kt. Waves less than 1 ft. A chance of rain and snow. .SAT...NW winds 5 kt. Waves less than 1 ft. .SAT NIGHT...NW winds around 5 kt. Waves 1 ft. .SUN...N winds 5 to 10 kt. Waves 1 ft. .MON...N winds 10 to 15 kt...diminishing to 5 kt after midnight. Waves 1 ft. $$ ANZ534-040900- Chesapeake Bay from Drum Point to Smith Point- 657 PM EST Wed Dec 3 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM THURSDAY AFTERNOON THROUGH THURSDAY EVENING... .TONIGHT...SW winds 5 to 10 kt. Waves 1 to 2 ft. .THU...NW winds 10 to 15 kt with gusts to 20 kt... increasing to 15 to 20 kt with gusts to 25 kt late. Waves 1 ft...building to 3 ft in the afternoon. .THU NIGHT...N winds 15 to 20 kt with gusts to 25 kt...becoming NE 10 to 15 kt late. Waves 3 ft. .FRI...NE winds 5 to 10 kt. Waves 1 to 2 ft. Snow. .FRI NIGHT...N winds 5 to 10 kt. Waves 1 ft. Rain likely. .SAT...NW winds 5 to 10 kt. Waves 1 ft. .SAT NIGHT...NW winds 5 to 10 kt. Waves 1 ft or less. .SUN...N winds 10 to 15 kt. Waves 1 to 2 ft. .MON...N winds 10 to 15 kt. Waves 2 to 3 ft. $$ ANZ543-040900- Tangier Sound and the inland waters surrounding Bloodsworth Island- 657 PM EST Wed Dec 3 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM THURSDAY AFTERNOON THROUGH THURSDAY EVENING... .TONIGHT...W winds 5 to 10 kt. Waves 1 ft. .THU...NW winds 10 to 15 kt with gusts to 20 kt... increasing to 15 to 20 kt with gusts to 25 kt late. Waves 1 to 2 ft. .THU NIGHT...N winds 15 to 20 kt with gusts to 25 kt...becoming NE 10 to 15 kt late. Waves 2 ft. .FRI...NE winds 5 to 10 kt. Waves 1 ft. Snow and rain. .FRI NIGHT...N winds 5 to 10 kt. Waves 1 ft. Rain likely. .SAT...NW winds 5 to 10 kt. Waves 1 ft. .SAT NIGHT...NW winds 5 to 10 kt. Waves 1 ft or less. .SUN...N winds 10 to 15 kt. Waves 1 to 2 ft. .MON...N winds 10 to 15 kt. Waves 1 to 2 ft. $$