Coastal Waters Forecast
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
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453 FZUS51 KLWX 080834 CWFLWX Coastal Waters Forecast National Weather Service Baltimore MD/Washington DC 434 AM EDT Wed Oct 8 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. ANZ500-082300- 434 AM EDT Wed Oct 8 2025 .SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY... A cold front approaching from the west will track across the waters this morning. A strong area of Canadian high pressure will build in from the north and west Thursday into Friday. A coastal low will likely approach from the south and east this weekend. Small Craft Advisories will likely be needed this weekend, and Gale conditions can`t be ruled out. $$ ANZ535-082300- Tidal Potomac from Key Bridge to Indian Head- 434 AM EDT Wed Oct 8 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT THIS MORNING THROUGH THIS EVENING... .REST OF THE OVERNIGHT...S winds 10 kt. Waves 1 ft. Showers with a slight chance of tstms. Vsby 1 NM or less. .TODAY...SW winds 5 to 10 kt with gusts to 20 kt... becoming N 10 to 15 kt with gusts to 25 kt in the afternoon. Waves 1 ft. Showers. Vsby 1 NM or less. .TONIGHT...N winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft. .THU...N winds 5 to 10 kt. Waves 1 ft. .THU NIGHT...NE winds around 5 kt. Waves 1 ft. .FRI...E winds around 5 kt. Waves 1 ft. .FRI NIGHT...E winds around 5 kt. Waves 1 ft. .SAT...NE winds 5 to 10 kt. Waves 1 ft. A chance of showers after midnight. .SUN...N winds 10 to 15 kt. Waves 1 ft. A chance of showers. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ536-082300- Tidal Potomac from Indian Head to Cobb Island- 434 AM EDT Wed Oct 8 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT THIS MORNING THROUGH THIS EVENING... .REST OF THE OVERNIGHT...SW winds 10 kt with gusts to 20 kt. Waves 1 ft. Showers with a slight chance of tstms. Vsby 1 NM or less. .TODAY...SW winds 5 to 10 kt...becoming NW 10 to 15 kt in the afternoon. Gusts up to 20 kt. Waves 1 to 2 ft. Showers. Vsby 1 NM or less. .TONIGHT...N winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. .THU...N winds 10 to 15 kt. Waves 1 ft. .THU NIGHT...NE winds 5 to 10 kt. Waves 1 ft. .FRI...E winds 5 kt. Waves less than 1 ft. .FRI NIGHT...E winds around 5 kt. Waves 1 ft. .SAT...NE winds 10 to 15 kt. Waves 1 ft. A chance of showers after midnight. .SUN...N winds 10 to 15 kt. Waves 1 ft. A chance of showers. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ537-082300- Tidal Potomac from Cobb Island to Smith Point- 434 AM EDT Wed Oct 8 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY AFTERNOON... .REST OF THE OVERNIGHT...SW winds 15 kt with gusts to 20 kt. Waves 2 ft. A chance of showers with a slight chance of tstms. Vsby 1 NM or less. .TODAY...SW winds 10 to 15 kt...becoming NW 15 to 20 kt in the afternoon. Gusts up to 25 kt. Waves 2 ft. A chance of showers. Vsby 1 NM or less. .TONIGHT...N winds 20 to 25 kt with gusts to 30 kt. Waves 3 ft. .THU...N winds 15 to 20 kt with gusts to 25 kt. Waves 2 to 3 ft. .THU NIGHT...NE winds 10 to 15 kt. Waves 2 ft. .FRI...E winds 5 to 10 kt. Waves 1 to 2 ft. .FRI NIGHT...E winds 5 to 10 kt. Waves 1 ft. .SAT...NE winds 15 to 20 kt. Waves 2 to 3 ft. A chance of showers through the night. .SUN...N winds 20 to 25 kt. Waves 3 ft. A chance of showers. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ530-082300- Chesapeake Bay north of Pooles Island- 434 AM EDT Wed Oct 8 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY AFTERNOON... .REST OF THE OVERNIGHT...SW winds 15 kt with gusts to 25 kt. Waves 2 ft. Showers with a slight chance of tstms. Vsby 1 NM or less. .TODAY...SW winds 10 to 15 kt...becoming N in the afternoon. Gusts up to 20 kt. Waves 1 to 2 ft. Showers. Vsby 1 NM or less. .TONIGHT...N winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft. .THU...N winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. .THU NIGHT...NE winds 5 to 10 kt. Waves 1 ft. .FRI...E winds 5 to 10 kt. Waves 1 ft. .FRI NIGHT...E winds around 5 kt. Waves 1 ft. .SAT...NE winds 10 to 15 kt. Waves 1 to 2 ft. A chance of showers through the night. .SUN...N winds 15 to 20 kt. Waves 1 to 2 ft. A chance of showers. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ531-082300- Chesapeake Bay from Pooles Island to Sandy Point- 434 AM EDT Wed Oct 8 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY AFTERNOON... .REST OF THE OVERNIGHT...SW winds 15 kt with gusts to 25 kt. Waves 2 ft. Showers with a slight chance of tstms. Vsby 1 NM or less. .TODAY...SW winds 10 to 15 kt...becoming N 15 to 20 kt in the afternoon. Gusts up to 25 kt. Waves 2 ft. Showers. Vsby 1 NM or less. .TONIGHT...N winds 20 to 25 kt. Waves 3 ft. .THU...N winds 15 to 20 kt. Waves 2 ft. .THU NIGHT...NE winds 5 to 10 kt. Waves 1 ft. .FRI...E winds 5 to 10 kt. Waves 1 ft. .FRI NIGHT...SE winds 5 kt. Waves less than 1 ft. .SAT...NE winds 15 to 20 kt. Waves 1 to 2 ft. A chance of showers through the night. .SUN...N winds 15 to 20 kt. Waves 2 to 3 ft. A chance of showers. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ538-082300- Patapsco River including Baltimore Harbor- 434 AM EDT Wed Oct 8 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY AFTERNOON... .REST OF THE OVERNIGHT...SW winds 10 kt with gusts to 20 kt. Waves 1 ft. Showers with a slight chance of tstms. Vsby 1 NM or less. .TODAY...W winds 5 to 10 kt...becoming N 15 kt in the afternoon. Gusts up to 20 kt. Waves 1 ft. Showers. Vsby 1 NM or less. .TONIGHT...N winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. .THU...N winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. .THU NIGHT...NE winds 5 to 10 kt. Waves 1 ft. .FRI...E winds 5 kt. Waves less than 1 ft. .FRI NIGHT...SE winds 5 kt. Waves less than 1 ft. .SAT...NE winds 10 to 15 kt. Waves 1 ft. A chance of showers after midnight. .SUN...N winds 10 to 15 kt. Waves 1 ft. A chance of showers. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ539-082300- Chester River to Queenstown MD- 434 AM EDT Wed Oct 8 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY AFTERNOON... .REST OF THE OVERNIGHT...SW winds 15 kt with gusts to 20 kt. Waves 2 ft. Showers with a slight chance of tstms. Vsby 1 NM or less. .TODAY...SW winds 10 to 15 kt...becoming N in the afternoon. Gusts up to 20 kt. Waves 2 ft. Showers. Vsby 1 NM or less. .TONIGHT...N winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft. .THU...N winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. .THU NIGHT...NE winds 5 to 10 kt. Waves 1 ft. .FRI...E winds 5 to 10 kt. Waves 1 ft or less. .FRI NIGHT...E winds 5 kt. Waves flat. .SAT...NE winds 10 to 15 kt. Waves 1 to 2 ft. A chance of showers through the night. .SUN...N winds 15 kt. Waves 2 ft. A chance of showers. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ532-082300- Chesapeake Bay from Sandy Point to North Beach- 434 AM EDT Wed Oct 8 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY AFTERNOON... .REST OF THE OVERNIGHT...SW winds 15 kt with gusts to 25 kt. Waves 2 ft. Showers likely with a slight chance of tstms. Vsby 1 NM or less. .TODAY...SW winds 10 to 15 kt...becoming N 15 to 20 kt in the afternoon. Gusts up to 25 kt. Waves 2 to 3 ft. Showers. Vsby 1 NM or less. .TONIGHT...N winds 20 to 25 kt. Waves 3 ft. .THU...N winds 15 to 20 kt. Waves 2 to 3 ft. .THU NIGHT...NE winds 10 kt. Waves 1 to 2 ft. .FRI...E winds 5 to 10 kt. Waves 1 ft. .FRI NIGHT...SE winds 5 to 10 kt. Waves 1 ft. .SAT...NE winds 15 to 20 kt. Waves 1 to 2 ft... building to 3 ft after midnight. A chance of showers through the night. .SUN...N winds 20 to 25 kt. Waves 3 ft. A chance of showers. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ540-082300- Eastern Bay- 434 AM EDT Wed Oct 8 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY AFTERNOON... .REST OF THE OVERNIGHT...SW winds 15 kt with gusts to 25 kt. Waves 2 ft. Showers likely with a slight chance of tstms. Vsby 1 NM or less. .TODAY...SW winds 10 to 15 kt...becoming N 15 to 20 kt in the afternoon. Waves 2 ft. Showers. Vsby 1 NM or less. .TONIGHT...N winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft. .THU...N winds 15 to 20 kt. Waves 1 to 2 ft. .THU NIGHT...NE winds 5 to 10 kt. Waves 1 ft. .FRI...E winds 5 to 10 kt. Waves 1 ft. .FRI NIGHT...E winds 5 kt. Waves less than 1 ft. .SAT...NE winds 15 to 20 kt. Waves 1 to 2 ft. A chance of showers through the night. .SUN...N winds 15 to 20 kt. Waves 2 ft. A chance of showers. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ533-082300- Chesapeake Bay from North Beach to Drum Point- 434 AM EDT Wed Oct 8 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY AFTERNOON... .REST OF THE OVERNIGHT...SW winds 15 kt with gusts to 25 kt. Waves 2 ft. A chance of showers with a slight chance of tstms. Vsby 1 NM or less. .TODAY...SW winds 10 to 15 kt...becoming NW 15 to 20 kt in the afternoon. Gusts up to 25 kt. Waves 2 to 3 ft. Showers. Vsby 1 NM or less. .TONIGHT...N winds 20 to 25 kt. Waves 4 ft. .THU...N winds 20 to 25 kt. Waves 3 ft. .THU NIGHT...NE winds 10 to 15 kt. Waves 2 ft. .FRI...E winds 5 to 10 kt. Waves 1 ft. .FRI NIGHT...E winds 5 to 10 kt. Waves 1 ft. .SAT...NE winds 20 to 25 kt. Waves 1 to 2 ft... building to 3 ft. A chance of showers through the night. .SUN...N winds 25 to 30 kt. Waves 3 ft...building to 4 ft. A chance of showers. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ541-082300- Choptank River to Cambridge MD and the Little Choptank River- 434 AM EDT Wed Oct 8 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY AFTERNOON... .REST OF THE OVERNIGHT...SW winds 15 kt with gusts to 25 kt. Waves 2 ft. A chance of showers with a slight chance of tstms. Vsby 1 NM or less. .TODAY...SW winds 10 to 15 kt...becoming NW 15 to 20 kt in the afternoon. Gusts up to 25 kt. Waves 2 ft. Showers. Vsby 1 NM or less. .TONIGHT...N winds 20 to 25 kt. Waves 2 ft. .THU...N winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft. .THU NIGHT...NE winds 5 to 10 kt. Waves 1 ft. .FRI...E winds 5 to 10 kt. Waves 1 ft. .FRI NIGHT...E winds 5 to 10 kt. Waves 1 ft. .SAT...NE winds 15 to 20 kt. Waves 1 to 2 ft. A chance of showers through the night. .SUN...N winds 20 to 25 kt. Waves 2 to 3 ft. A chance of showers. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ542-082300- Patuxent River to Broomes Island MD- 434 AM EDT Wed Oct 8 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY AFTERNOON... .REST OF THE OVERNIGHT...SW winds 10 kt with gusts to 20 kt. Waves 1 ft. A chance of showers with a slight chance of tstms. Vsby 1 NM or less. .TODAY...SW winds 5 to 10 kt...becoming NW 10 to 15 kt in the afternoon. Gusts up to 20 kt. Waves 1 ft. Showers. Vsby 1 NM or less. .TONIGHT...N winds 15 to 20 kt with gusts to 25 kt. Waves 1 ft. .THU...N winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. .THU NIGHT...NE winds 5 to 10 kt. Waves 1 ft. .FRI...E winds 5 to 10 kt. Waves 1 ft. .FRI NIGHT...E winds 5 kt. Waves less than 1 ft. .SAT...NE winds 10 to 15 kt. Waves 1 ft. A chance of showers through the night. .SUN...N winds 20 to 25 kt. Waves 1 ft. A chance of showers. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ534-082300- Chesapeake Bay from Drum Point to Smith Point- 434 AM EDT Wed Oct 8 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY AFTERNOON... .REST OF THE OVERNIGHT...SW winds 15 kt with gusts to 25 kt. Waves 3 ft. A chance of showers with a slight chance of tstms. Vsby 1 NM or less. .TODAY...SW winds 10 to 15 kt...becoming N 15 to 20 kt late. Gusts up to 25 kt. Waves 3 ft. Showers. Vsby 1 NM or less. .TONIGHT...N winds 20 to 25 kt with gusts to 30 kt. Waves 4 ft. .THU...N winds 20 to 25 kt. Waves 3 ft. .THU NIGHT...NE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. .FRI...E winds 10 to 15 kt. Waves 1 to 2 ft. .FRI NIGHT...E winds 10 kt. Waves 1 ft. .SAT...NE winds 20 to 25 kt. Waves 2 to 3 ft... building to 4 ft after midnight. A chance of showers through the night. .SUN...N winds 25 to 30 kt. Waves 4 ft...building to 5 ft. A chance of showers. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ543-082300- Tangier Sound and the inland waters surrounding Bloodsworth Island- 434 AM EDT Wed Oct 8 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY AFTERNOON... .REST OF THE OVERNIGHT...SW winds 15 kt with gusts to 25 kt. Waves 2 ft. A chance of showers with a slight chance of tstms. Vsby 1 NM or less. .TODAY...SW winds 10 to 15 kt...becoming N 15 to 20 kt late. Gusts up to 25 kt. Waves 2 ft. Showers likely. Vsby 1 NM or less. .TONIGHT...N winds 20 to 25 kt with gusts to 30 kt. Waves 3 ft. .THU...N winds 20 to 25 kt...becoming NE 10 to 15 kt in the afternoon. Waves 2 ft. .THU NIGHT...NE winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. .FRI...E winds 10 to 15 kt. Waves 1 ft. .FRI NIGHT...E winds 5 to 10 kt. Waves 1 ft. .SAT...NE winds 20 to 25 kt. Waves 1 to 2 ft. A chance of showers through the night. .SUN...N winds 25 to 30 kt. Waves 2 to 3 ft. A chance of showers. Winds and waves higher and visibilities lower in and near tstms. $$