


Coastal Waters Forecast
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
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728 FZUS51 KLWX 040245 CWFLWX Coastal Waters Forecast National Weather Service Baltimore MD/Washington DC 1045 PM EDT Thu Jul 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- 1045 PM EDT Thu Jul 3 2025 .SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY... High pressure will build in for the end of the week. A cold front will approach the waters from the northwest early next week. $$ ANZ535-040800- Tidal Potomac from Key Bridge to Indian Head- 1045 PM EDT Thu Jul 3 2025 .REST OF TONIGHT...NW winds 5 kt. Waves less than 1 ft. .FRI...N winds around 5 kt. Waves 1 ft. .FRI NIGHT...E winds around 5 kt. Waves 1 ft or less. .SAT...SE winds around 5 kt. Waves 1 ft. .SAT NIGHT...S winds around 5 kt. Waves 1 ft. .SUN...S winds 5 to 10 kt. Waves 1 ft. .SUN NIGHT...S winds 5 to 10 kt. Waves 1 ft. .MON...S winds around 5 kt. Waves 1 ft. A chance of showers and tstms through the night. .TUE...NW winds around 5 kt. Waves 1 ft. A chance of showers and tstms. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ536-040800- Tidal Potomac from Indian Head to Cobb Island- 1045 PM EDT Thu Jul 3 2025 .REST OF TONIGHT...NW winds 5 kt. Waves less than 1 ft. .FRI...N winds around 5 kt. Waves 1 ft. .FRI NIGHT...E winds around 5 kt. Waves 1 ft or less. .SAT...SE winds around 5 kt. Waves 1 ft or less. .SAT NIGHT...S winds around 5 kt. Waves 1 ft. .SUN...S winds 5 kt. Waves less than 1 ft. .SUN NIGHT...SE winds 5 to 10 kt. Waves 1 ft. .MON...S winds around 5 kt. Waves 1 ft. A chance of showers and tstms through the night. .TUE...W winds around 5 kt. Waves 1 ft. A chance of showers and tstms. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ537-040800- Tidal Potomac from Cobb Island to Smith Point- 1045 PM EDT Thu Jul 3 2025 .REST OF TONIGHT...W winds 10 kt...becoming N late. Waves 1 ft. .FRI...N winds 5 to 10 kt. Waves 1 ft. .FRI NIGHT...E winds around 5 kt. Waves 1 ft or less. .SAT...E winds 5 to 10 kt. Waves 1 ft or less. .SAT NIGHT...S winds 5 to 10 kt. Waves 1 ft. .SUN...S winds 5 to 10 kt. Waves 1 ft. .SUN NIGHT...S winds 5 to 10 kt. Waves 1 ft. .MON...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms through the night. .TUE...SW winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ530-040800- Chesapeake Bay north of Pooles Island- 1045 PM EDT Thu Jul 3 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 AM EDT FRIDAY... .REST OF TONIGHT...N winds 10 kt. Waves 1 ft. .FRI...N winds 5 kt. Waves flat. .FRI NIGHT...N winds around 5 kt. Waves flat. .SAT...SE winds around 5 kt. Waves flat. .SAT NIGHT...S winds 5 kt. Waves flat. .SUN...S winds 5 kt. Waves less than 1 ft. .SUN NIGHT...S winds 5 to 10 kt. Waves 1 ft. .MON...S winds 5 kt. Waves less than 1 ft. A chance of showers and tstms through the night. .TUE...NW winds 5 kt. Waves less than 1 ft. A chance of showers and tstms. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ531-040800- Chesapeake Bay from Pooles Island to Sandy Point- 1045 PM EDT Thu Jul 3 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 AM EDT FRIDAY... .REST OF TONIGHT...NW winds 10 kt with gusts to 20 kt. Waves 1 to 2 ft. .FRI...N winds 5 kt. Waves less than 1 ft. .FRI NIGHT...NE winds around 5 kt. Waves flat. .SAT...SE winds around 5 kt. Waves 1 ft or less. .SAT NIGHT...S winds 5 to 10 kt. Waves 1 ft. .SUN...S winds 5 to 10 kt. Waves 1 ft. .SUN NIGHT...S winds 5 to 10 kt. Waves 1 ft. .MON...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms through the night. .TUE...W winds 5 kt. Waves less than 1 ft. A chance of showers and tstms. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ538-040800- Patapsco River including Baltimore Harbor- 1045 PM EDT Thu Jul 3 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 AM EDT FRIDAY... .REST OF TONIGHT...NW winds 5 to 10 kt. Waves 1 ft. .FRI...N winds 5 kt. Waves flat. .FRI NIGHT...NE winds around 5 kt. Waves flat. .SAT...SE winds around 5 kt. Waves flat. .SAT NIGHT...S winds 5 kt. Waves flat. .SUN...S winds 5 to 10 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. A chance of showers and tstms through the night. .TUE...NW winds around 5 kt. Waves flat. A chance of showers and tstms. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ539-040800- Chester River to Queenstown MD- 1045 PM EDT Thu Jul 3 2025 .REST OF TONIGHT...N winds 5 to 10 kt. Waves 1 ft. .FRI...N winds 5 kt. Waves less than 1 ft. .FRI NIGHT...E winds around 5 kt. Waves flat. .SAT...SE winds around 5 kt. Waves flat. .SAT NIGHT...S winds 5 kt. Waves less than 1 ft. .SUN...S winds 5 kt. Waves less than 1 ft. .SUN NIGHT...S winds 5 to 10 kt. Waves 1 ft. .MON...S winds 5 kt. Waves less than 1 ft. A chance of showers and tstms through the night. .TUE...W winds 5 kt. Waves less than 1 ft. A chance of showers and tstms. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ532-040800- Chesapeake Bay from Sandy Point to North Beach- 1045 PM EDT Thu Jul 3 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 AM EDT FRIDAY... .REST OF TONIGHT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft. .FRI...NE winds 5 to 10 kt. Waves 1 ft. .FRI NIGHT...E winds around 5 kt. Waves flat. .SAT...SE winds 5 kt. Waves less than 1 ft. .SAT NIGHT...S winds 5 to 10 kt. Waves 1 ft. .SUN...S winds 5 to 10 kt. Waves 1 ft. .SUN NIGHT...S winds 5 to 10 kt. Waves 1 to 2 ft. .MON...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms through the night. .TUE...SW winds 5 kt. Waves less than 1 ft. A chance of showers and tstms. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ540-040800- Eastern Bay- 1045 PM EDT Thu Jul 3 2025 .REST OF TONIGHT...NW winds 5 to 10 kt. Waves 1 ft. .FRI...N winds 5 kt. Waves less than 1 ft. .FRI NIGHT...E winds around 5 kt. Waves flat. .SAT...SE winds around 5 kt. Waves flat. .SAT NIGHT...S winds 5 kt. Waves less than 1 ft. .SUN...S winds 5 kt. Waves less than 1 ft. .SUN NIGHT...S winds 5 to 10 kt. Waves 1 ft. .MON...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms through the night. .TUE...SW winds 5 kt. Waves less than 1 ft. A chance of showers and tstms. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ533-040800- Chesapeake Bay from North Beach to Drum Point- 1045 PM EDT Thu Jul 3 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 AM EDT FRIDAY... .REST OF TONIGHT...NW winds 10 to 15 kt...becoming N late. Gusts up to 20 kt. Waves 1 to 2 ft. .FRI...N winds 5 to 10 kt. Waves 1 ft. .FRI NIGHT...SE winds 5 kt. Waves less than 1 ft. .SAT...SE winds 5 to 10 kt. Waves 1 ft or less. .SAT NIGHT...S winds 5 to 10 kt. Waves 1 ft. .SUN...S winds 5 to 10 kt. Waves 1 ft. .SUN NIGHT...S winds 5 to 10 kt. Waves 1 to 2 ft. .MON...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms through the night. .TUE...SW winds 5 to 10 kt...becoming 5 kt. Waves 1 ft. A chance of showers and tstms. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ541-040800- Choptank River to Cambridge MD and the Little Choptank River- 1045 PM EDT Thu Jul 3 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 AM EDT FRIDAY... .REST OF TONIGHT...NW winds 10 kt...becoming N late. Gusts up to 20 kt. Waves 1 ft. .FRI...N winds 5 to 10 kt. Waves 1 ft. .FRI NIGHT...E winds around 5 kt. Waves flat. .SAT...SE winds around 5 kt. Waves flat. .SAT NIGHT...S winds 5 to 10 kt. Waves 1 ft. .SUN...S winds 5 to 10 kt. Waves 1 ft. .SUN NIGHT...S winds 5 to 10 kt. Waves 1 ft. .MON...S winds 5 to 10 kt. Waves 1 ft. A chance of showers. A chance of tstms through the night. .TUE...SW winds 5 kt. Waves less than 1 ft. A chance of showers and tstms. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ542-040800- Patuxent River to Broomes Island MD- 1045 PM EDT Thu Jul 3 2025 .REST OF TONIGHT...NW winds 5 kt. Waves less than 1 ft. .FRI...N winds 5 kt. Waves less than 1 ft. .FRI NIGHT...E winds around 5 kt. Waves 1 ft. .SAT...SE winds 5 to 10 kt. Waves 1 ft. .SAT NIGHT...S winds 5 to 10 kt. Waves 1 ft. .SUN...S winds 5 to 10 kt. Waves 1 ft. .SUN NIGHT...S winds 5 to 10 kt. Waves 1 ft. .MON...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms through the night. .TUE...SW winds around 5 kt. Waves 1 ft. A chance of showers and tstms. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ534-040800- Chesapeake Bay from Drum Point to Smith Point- 1045 PM EDT Thu Jul 3 2025 .REST OF TONIGHT...W winds 10 to 15 kt...becoming N late. Waves 1 to 2 ft. .FRI...N winds 5 to 10 kt. Waves 1 ft. .FRI NIGHT...E winds 5 kt. Waves less than 1 ft. .SAT...SE winds 5 to 10 kt. Waves 1 ft or less. .SAT NIGHT...S winds 5 to 10 kt. Waves 1 ft. .SUN...S winds 5 to 10 kt. Waves 1 ft. .SUN NIGHT...S winds 5 to 10 kt. Waves 2 ft. .MON...S winds 5 to 10 kt. Waves 1 ft. A chance of showers. A chance of tstms. .TUE...SW winds 5 to 10 kt. Waves 1 ft. A chance of showers. A chance of tstms. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ543-040800- Tangier Sound and the inland waters surrounding Bloodsworth Island- 1045 PM EDT Thu Jul 3 2025 .REST OF TONIGHT...W winds 10 kt...becoming N late. Waves 1 ft. .FRI...N winds 5 to 10 kt. Waves 1 ft. .FRI NIGHT...E winds 5 kt. Waves less than 1 ft. .SAT...SE winds 5 to 10 kt. Waves 1 ft or less. .SAT NIGHT...SE winds 5 to 10 kt. Waves 1 ft. .SUN...S winds 5 to 10 kt. Waves 1 ft. .SUN NIGHT...S winds 10 kt. Waves 1 ft. .MON...S winds 5 to 10 kt. Waves 1 ft. A chance of showers. A chance of tstms. .TUE...SW winds 5 to 10 kt. Waves 1 ft. A chance of showers. A chance of tstms. Winds and waves higher and visibilities lower in and near tstms. $$