


Coastal Waters Forecast
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
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432 FZUS51 KLWX 281734 CWFLWX Coastal Waters Forecast National Weather Service Baltimore MD/Washington DC 134 PM EDT Sat Jun 28 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. ANZ500-290800- 134 PM EDT Sat Jun 28 2025 .SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY... A warm front will lift north of the waters through early this evening. A second front may briefly dip into the area Sunday. A stronger cold front may impact the waters Tuesday. Small Craft Advisories may be needed Monday night into Tuesday. In addition, Special Marine Warnings are possible with thunderstorms during the late afternoon and evening hours through the remainder of the weekend. $$ ANZ535-290800- Tidal Potomac from Key Bridge to Indian Head- 134 PM EDT Sat Jun 28 2025 .THIS AFTERNOON...S winds 5 kt. Waves less than 1 ft. .TONIGHT...SW winds around 5 kt. Waves 1 ft or less. Patchy fog. Vsby 1 to 3 NM. .SUN...Light winds. Waves 1 ft. A chance of showers and tstms. .SUN NIGHT...Light winds. Waves flat. A chance of showers and tstms. .MON...S winds around 5 kt. Waves 1 ft. Showers likely with a chance of tstms. .MON NIGHT...S winds 5 kt. Waves less than 1 ft. A chance of showers and tstms. .TUE...SW winds 5 to 10 kt. Waves 1 ft. Showers likely through the night. A chance of tstms. A chance of showers after midnight. .WED...W winds around 5 kt. Waves 1 ft or less. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ536-290800- Tidal Potomac from Indian Head to Cobb Island- 134 PM EDT Sat Jun 28 2025 .THIS AFTERNOON...S winds 5 kt. Waves less than 1 ft. .TONIGHT...SW winds around 5 kt. Waves 1 ft or less. Patchy fog. Vsby 1 to 3 NM. .SUN...Light winds. Waves 1 ft or less. A chance of showers and tstms. Vsby 1 NM or less. .SUN NIGHT...SW winds around 5 kt. Waves 1 ft or less. A chance of showers and tstms. .MON...S winds around 5 kt. Waves 1 ft. A chance of showers and tstms. .MON NIGHT...S winds 5 to 10 kt. Waves 1 ft. .TUE...SW winds 5 to 10 kt. Waves 1 ft. Showers likely with a chance of tstms through the night. A chance of showers and tstms after midnight. .WED...W winds around 5 kt. Waves 1 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ537-290800- Tidal Potomac from Cobb Island to Smith Point- 134 PM EDT Sat Jun 28 2025 .THIS AFTERNOON...SE winds 5 to 10 kt. Waves 1 ft or less. .TONIGHT...S winds 5 to 10 kt. Waves 1 ft. .SUN...W winds around 5 kt. Waves 1 ft or less. A chance of showers and tstms. Vsby 1 NM or less. .SUN NIGHT...SW winds around 5 kt. Waves flat. A chance of showers and tstms. .MON...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms. .MON NIGHT...S winds 10 to 15 kt. Waves 1 ft. .TUE...SW winds 10 to 15 kt. Waves 1 to 2 ft. Showers likely with a chance of tstms. .WED...W winds 5 kt. Waves less than 1 ft. A chance of showers in the morning, then a chance of showers and tstms through the night. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ530-290800- Chesapeake Bay north of Pooles Island- 134 PM EDT Sat Jun 28 2025 .THIS AFTERNOON...SW winds 5 kt. Waves less than 1 ft. .TONIGHT...SW winds around 5 kt. Waves 1 ft. A chance of showers and tstms. Patchy fog. Vsby 1 NM or less. .SUN...NW winds around 5 kt. Waves 1 ft. .SUN NIGHT...NW winds around 5 kt. Waves 1 ft or less. .MON...SE winds around 5 kt. Waves 1 ft. Showers likely with a chance of tstms. .MON NIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms. .TUE...SW winds 5 to 10 kt. Waves 1 ft. Showers likely through the day. A chance of tstms. A chance of showers through the night. .WED...W winds around 5 kt. Waves 1 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ531-290800- Chesapeake Bay from Pooles Island to Sandy Point- 134 PM EDT Sat Jun 28 2025 .THIS AFTERNOON...S winds 5 kt. Waves less than 1 ft. .TONIGHT...SW winds 5 to 10 kt. Waves 1 ft or less. .SUN...NE winds around 5 kt. Waves flat. A chance of showers and tstms. .SUN NIGHT...S winds around 5 kt. Waves flat. A chance of showers and tstms. .MON...S winds 5 to 10 kt. Waves 1 ft or less. Showers likely with a chance of tstms. .MON NIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms. .TUE...SW winds 5 to 10 kt. Waves 1 ft. Showers in the afternoon. A chance of tstms. A chance of showers through the night. .WED...W winds 5 kt. Waves less than 1 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ538-290800- Patapsco River including Baltimore Harbor- 134 PM EDT Sat Jun 28 2025 .THIS AFTERNOON...S winds 5 kt. Waves less than 1 ft. A slight chance of showers and tstms. .TONIGHT...SW winds around 5 kt. Waves flat. A chance of showers and tstms. Vsby 1 NM or less. .SUN...NE winds around 5 kt. Waves flat. A chance of showers and tstms. .SUN NIGHT...S winds around 5 kt. Waves flat. A chance of showers and tstms. .MON...SE winds around 5 kt. Waves 1 ft or less. Showers likely with a chance of tstms. .MON NIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms. .TUE...SW winds 5 to 10 kt. Waves 1 ft or less. Showers with a chance of tstms. .WED...W winds around 5 kt. Waves flat. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ539-290800- Chester River to Queenstown MD- 134 PM EDT Sat Jun 28 2025 .THIS AFTERNOON...S winds 5 kt. Waves less than 1 ft. .TONIGHT...SW winds around 5 kt. Waves 1 ft or less. Patchy fog. Vsby 1 to 3 NM. .SUN...W winds around 5 kt. Waves flat. A chance of showers and tstms. .SUN NIGHT...Light winds. Waves flat. A chance of showers and tstms. .MON...S winds around 5 kt. Waves 1 ft or less. Showers likely with a chance of tstms. .MON NIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms. .TUE...SW winds 5 to 10 kt. Waves 1 ft. Showers likely through the night. A chance of tstms. A chance of showers after midnight. .WED...W winds around 5 kt. Waves 1 ft or less. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ532-290800- Chesapeake Bay from Sandy Point to North Beach- 134 PM EDT Sat Jun 28 2025 .THIS AFTERNOON...S winds 5 kt. Waves less than 1 ft. .TONIGHT...SW winds 5 to 10 kt. Waves 1 ft. .SUN...NE winds 5 kt. Waves flat. A chance of showers and tstms. .SUN NIGHT...SW winds around 5 kt. Waves flat. A chance of showers and tstms. .MON...S winds 5 to 10 kt. Waves 1 ft or less. Showers likely with a chance of tstms. .MON NIGHT...S winds 10 kt. Waves 1 ft. A chance of showers and tstms. .TUE...SW winds 5 to 10 kt. Waves 1 to 2 ft. Showers likely in the afternoon. A chance of tstms. A chance of showers through the night. .WED...W winds 5 kt. Waves less than 1 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ540-290800- Eastern Bay- 134 PM EDT Sat Jun 28 2025 .THIS AFTERNOON...S winds 5 kt. Waves less than 1 ft. .TONIGHT...SW winds 5 kt. Waves less than 1 ft. Patchy fog. Vsby 1 to 3 NM. .SUN...W winds around 5 kt. Waves flat. A chance of showers and tstms. .SUN NIGHT...SW winds around 5 kt. Waves flat. A chance of showers and tstms. .MON...S winds 5 to 10 kt. Waves 1 ft or less. Showers likely with a chance of tstms. .MON NIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms. .TUE...SW winds 5 to 10 kt. Waves 1 ft. Showers likely through the night. A chance of tstms. A chance of showers after midnight. .WED...W winds around 5 kt. Waves 1 ft or less. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ533-290800- Chesapeake Bay from North Beach to Drum Point- 134 PM EDT Sat Jun 28 2025 .THIS AFTERNOON...S winds 5 kt. Waves less than 1 ft. .TONIGHT...SW winds 5 to 10 kt. Waves 1 ft. .SUN...N winds around 5 kt. Waves 1 ft or less. A chance of showers and tstms. Vsby 1 NM or less. .SUN NIGHT...SW winds around 5 kt. Waves flat. A chance of showers and tstms. .MON...S winds 5 to 10 kt. Waves 1 ft or less. A chance of showers and tstms. .MON NIGHT...S winds 10 to 15 kt. Waves 1 to 2 ft. .TUE...SW winds 10 to 15 kt. Waves 1 to 2 ft. Showers likely through the night. A chance of tstms. A chance of showers after midnight. .WED...W winds 5 kt. Waves less than 1 ft. A chance of showers in the morning. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ541-290800- Choptank River to Cambridge MD and the Little Choptank River- 134 PM EDT Sat Jun 28 2025 .THIS AFTERNOON...S winds 5 kt. Waves less than 1 ft. .TONIGHT...SW winds 5 to 10 kt. Waves 1 ft. .SUN...W winds around 5 kt. Waves 1 ft or less. A chance of showers and tstms. .SUN NIGHT...SW winds around 5 kt. Waves flat. A chance of showers and tstms. .MON...S winds 5 to 10 kt. Waves 1 ft or less. A chance of showers and tstms. .MON NIGHT...S winds 10 to 15 kt. Waves 1 ft. .TUE...SW winds 10 to 15 kt. Waves 1 to 2 ft. Showers likely through the night. A chance of tstms. A chance of showers after midnight. .WED...W winds 5 kt. Waves less than 1 ft. A chance of showers in the morning. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ542-290800- Patuxent River to Broomes Island MD- 134 PM EDT Sat Jun 28 2025 .THIS AFTERNOON...S winds 5 kt. Waves less than 1 ft. .TONIGHT...SW winds around 5 kt. Waves 1 ft. .SUN...N winds around 5 kt. Waves 1 ft. A chance of showers and tstms. Vsby 1 NM or less. .SUN NIGHT...SW winds around 5 kt. Waves 1 ft or less. A chance of showers and tstms. .MON...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms. .MON NIGHT...S winds 5 to 10 kt. Waves 1 ft. .TUE...SW winds 5 to 10 kt. Waves 1 ft. Showers likely with a chance of tstms. .WED...W winds around 5 kt. Waves 1 ft. A chance of showers in the morning. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ534-290800- Chesapeake Bay from Drum Point to Smith Point- 134 PM EDT Sat Jun 28 2025 .THIS AFTERNOON...SE winds 5 to 10 kt. Waves 1 ft. .TONIGHT...S winds 5 to 10 kt. Waves 1 ft. .SUN...W winds 5 to 10 kt...becoming E in the afternoon. Waves 1 ft. A chance of showers and tstms. .SUN NIGHT...SW winds 5 kt. Waves less than 1 ft. A chance of showers and tstms. .MON...S winds 5 to 10 kt. Waves 1 to 2 ft. A chance of showers and tstms. .MON NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 to 3 ft. .TUE...SW winds 10 to 15 kt. Waves 2 to 3 ft... subsiding to 1 ft after midnight. Showers likely with a chance of tstms. .WED...W winds 5 to 10 kt...becoming SW. Waves 1 ft. A chance of showers. A chance of tstms through the night. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ543-290800- Tangier Sound and the inland waters surrounding Bloodsworth Island- 134 PM EDT Sat Jun 28 2025 .THIS AFTERNOON...S winds 5 to 10 kt. Waves 1 ft. .TONIGHT...S winds 5 to 10 kt. Waves 1 ft. .SUN...SW winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms. .SUN NIGHT...SW winds 5 kt. Waves less than 1 ft. A chance of showers and tstms. .MON...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms. .MON NIGHT...S winds 15 to 20 kt. Waves 1 to 2 ft. .TUE...SW winds 15 to 20 kt...becoming W 5 to 10 kt after midnight. Waves 1 to 2 ft. A chance of showers and tstms in the afternoon. Showers likely with a chance of tstms through the night. .WED...W winds 5 to 10 kt. Waves 1 ft. A chance of showers through the day. Winds and waves higher and visibilities lower in and near tstms. $$