Coastal Waters Forecast
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
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500 FZUS51 KLWX 211735 CWFLWX Coastal Waters Forecast National Weather Service Baltimore MD/Washington DC 1235 PM EST Fri Feb 21 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. ANZ500-220900- 1235 PM EST Fri Feb 21 2025 .SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY... Low pressure off the Carolinas will exit out to sea later today. Arctic high pressure over the Great Plains is expected to push toward the east over the next couple of days before settling off to the south by the end of the weekend. A weak frontal system approaches from the west early next week. Small Craft Advisories may be needed through Friday night. $$ ANZ535-220900- Tidal Potomac from Key Bridge to Indian Head- 1235 PM EST Fri Feb 21 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM EST THIS EVENING... .THIS AFTERNOON...NW winds 15 to 20 kt with gusts to 30 kt. Waves 1 ft. .TONIGHT...NW winds 10 to 15 kt with gusts to 20 kt... diminishing to 5 kt late. Waves 1 ft. .SAT...W winds 5 to 10 kt...becoming SW late. Waves 1 ft. .SAT NIGHT...SW winds 5 kt. Waves less than 1 ft. .SUN...W winds around 5 kt. Waves 1 ft. .SUN NIGHT...S winds around 5 kt. Waves 1 ft or less. .MON...S winds 5 to 10 kt. Waves 1 ft. .TUE...W winds around 5 kt. Waves 1 ft. $$ ANZ536-220900- Tidal Potomac from Indian Head to Cobb Island- 1235 PM EST Fri Feb 21 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM EST THIS EVENING... .THIS AFTERNOON...NW winds 15 to 20 kt with gusts to 30 kt. Waves 2 ft. .TONIGHT...NW winds 10 to 15 kt. Gusts up to 20 kt until early morning. Waves 1 ft. .SAT...W winds 5 to 10 kt...becoming SW late. Waves 1 ft. .SAT NIGHT...SW winds 5 to 10 kt. Waves 1 ft. .SUN...W 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...SW winds 5 to 10 kt...becoming NW after midnight. Waves 1 ft. $$ ANZ537-220900- Tidal Potomac from Cobb Island to Smith Point- 1235 PM EST Fri Feb 21 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .THIS AFTERNOON...NW winds 20 kt with gusts to 30 kt. Waves 3 ft. .TONIGHT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 2 to 3 ft. .SAT...NW winds 5 to 10 kt...becoming SW late. Waves 1 ft. .SAT NIGHT...SW winds 5 to 10 kt. Waves 1 ft. .SUN...SW winds around 5 kt. Waves 1 ft or less. .SUN NIGHT...S winds 5 kt. Waves flat. .MON...S winds 5 to 10 kt. Waves 1 ft. .TUE...W winds 5 to 10 kt. Waves 1 ft. $$ ANZ530-220900- Chesapeake Bay north of Pooles Island- 1235 PM EST Fri Feb 21 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .THIS AFTERNOON...NW winds 20 kt with gusts to 30 kt. Waves 2 ft. .TONIGHT...NW winds 10 to 15 kt. Gusts up to 25 kt in the evening. Waves 1 to 2 ft. .SAT...W winds 5 to 10 kt. Waves 1 ft. .SAT NIGHT...SW winds 5 to 10 kt. Waves 1 ft. .SUN...W winds around 5 kt. Waves 1 ft. .SUN NIGHT...SW winds around 5 kt. Waves 1 ft or less. .MON...S winds 5 to 10 kt. Waves 1 ft. .TUE...W winds 5 kt. Waves less than 1 ft. $$ ANZ531-220900- Chesapeake Bay from Pooles Island to Sandy Point- 1235 PM EST Fri Feb 21 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .THIS AFTERNOON...NW winds 20 kt with gusts to 30 kt. Waves 3 ft. .TONIGHT...NW winds 15 to 20 kt with gusts to 25 kt... diminishing to 10 kt late. Waves 2 to 3 ft. .SAT...W winds 5 to 10 kt...becoming SW late. Waves 1 ft. .SAT NIGHT...SW winds 5 to 10 kt. Waves 1 ft. .SUN...W winds 5 kt. Waves less than 1 ft. .SUN NIGHT...SW winds around 5 kt. Waves flat. .MON...S winds 5 to 10 kt. Waves 1 ft. .TUE...SW winds 5 to 10 kt...becoming NW after midnight. Waves 1 ft. $$ ANZ538-220900- Patapsco River including Baltimore Harbor- 1235 PM EST Fri Feb 21 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM EST THIS EVENING... .THIS AFTERNOON...NW winds 20 kt with gusts to 30 kt. Waves 2 ft. .TONIGHT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. .SAT...W winds 5 kt. Waves less than 1 ft. .SAT NIGHT...SW winds 5 kt. Waves less than 1 ft. .SUN...W winds around 5 kt. Waves flat. .SUN NIGHT...SW winds around 5 kt. Waves flat. .MON...S winds 5 to 10 kt. Waves 1 ft or less. .TUE...W winds 5 kt. Waves less than 1 ft. $$ ANZ539-220900- Chester River to Queenstown MD- 1235 PM EST Fri Feb 21 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .THIS AFTERNOON...NW winds 20 kt with gusts to 30 kt. Waves 3 ft. .TONIGHT...NW winds 15 to 20 kt with gusts to 25 kt... diminishing to 10 kt late. Waves 2 to 3 ft. .SAT...W winds 5 to 10 kt...becoming SW late. Waves 1 ft. .SAT NIGHT...SW winds 5 to 10 kt. Waves 1 ft. .SUN...W winds 5 kt. Waves less than 1 ft. .SUN NIGHT...S winds around 5 kt. Waves flat. .MON...S winds 5 to 10 kt. Waves 1 ft or less. .TUE...SW winds 5 kt...becoming NW after midnight. Waves 1 ft. $$ ANZ532-220900- Chesapeake Bay from Sandy Point to North Beach- 1235 PM EST Fri Feb 21 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .THIS AFTERNOON...NW winds 20 kt with gusts to 30 kt. Waves 3 ft. .TONIGHT...NW winds 15 to 20 kt. Gusts up to 25 kt until early morning. Waves 2 to 3 ft. .SAT...W winds 5 to 10 kt...becoming SW late. Waves 1 ft. .SAT NIGHT...SW winds 5 to 10 kt. Waves 1 ft. .SUN...W winds 5 kt. Waves less than 1 ft. .SUN NIGHT...S winds around 5 kt. Waves flat. .MON...S winds 5 to 10 kt. Waves 1 ft. .TUE...SW winds 5 to 10 kt...becoming NW after midnight. Waves 1 ft. $$ ANZ540-220900- Eastern Bay- 1235 PM EST Fri Feb 21 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .THIS AFTERNOON...NW winds 20 kt with gusts to 30 kt. Waves 2 to 3 ft. .TONIGHT...NW winds 10 to 15 kt. Gusts up to 25 kt until early morning. Waves 1 to 2 ft. .SAT...W winds 5 to 10 kt...becoming SW late. Waves 1 ft. .SAT NIGHT...SW winds 5 to 10 kt. Waves 1 ft. .SUN...W winds 5 kt. Waves less than 1 ft. .SUN NIGHT...S winds around 5 kt. Waves flat. .MON...S winds 5 to 10 kt. Waves 1 ft. .TUE...SW winds 5 kt...becoming NW after midnight. Waves 1 ft. $$ ANZ533-220900- Chesapeake Bay from North Beach to Drum Point- 1235 PM EST Fri Feb 21 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .THIS AFTERNOON...NW winds 20 kt with gusts to 30 kt. Waves 4 ft. .TONIGHT...NW winds 15 to 20 kt with gusts to 25 kt. Waves 2 to 3 ft. .SAT...W winds 5 to 10 kt...becoming S late. Waves 1 to 2 ft. .SAT NIGHT...SW winds 5 to 10 kt. Waves 1 ft. .SUN...SW winds 5 kt. Waves less than 1 ft. .SUN NIGHT...S winds 5 kt. Waves flat. .MON...S winds 5 to 10 kt. Waves 1 ft. .TUE...SW winds 5 to 10 kt...becoming NW after midnight. Waves 1 ft. $$ ANZ541-220900- Choptank River to Cambridge MD and the Little Choptank River- 1235 PM EST Fri Feb 21 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .THIS AFTERNOON...NW winds 20 kt with gusts to 30 kt. Waves 2 ft... except around 3 ft near the mouth of the Choptank. .TONIGHT...NW winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft. .SAT...NW winds 5 to 10 kt...becoming SW late. Waves 1 ft. .SAT NIGHT...SW winds 5 to 10 kt. Waves 1 ft. .SUN...W winds 5 kt. Waves less than 1 ft. .SUN NIGHT...S winds 5 kt. Waves flat. .MON...S winds 5 to 10 kt. Waves 1 ft. .TUE...SW winds 5 to 10 kt...becoming NW after midnight. Waves 1 ft. $$ ANZ542-220900- Patuxent River to Broomes Island MD- 1235 PM EST Fri Feb 21 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM EST THIS EVENING... .THIS AFTERNOON...NW winds 20 kt with gusts to 30 kt. Waves 1 ft. .TONIGHT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. .SAT...W winds 5 to 10 kt...becoming SW late. Waves 1 ft. .SAT NIGHT...SW winds 5 to 10 kt. Waves 1 ft. .SUN...SW winds 5 kt. Waves less than 1 ft. .SUN NIGHT...S winds 5 kt. Waves less than 1 ft. .MON...S winds 5 to 10 kt. Waves 1 ft. .TUE...W winds 5 to 10 kt. Waves 1 ft. $$ ANZ534-220900- Chesapeake Bay from Drum Point to Smith Point- 1235 PM EST Fri Feb 21 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .THIS AFTERNOON...NW winds 20 kt. Gusts up to 35 kt... diminishing to 25 kt late. Waves 4 ft. .TONIGHT...NW winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft. .SAT...NW winds 10 to 15 kt...becoming SW 5 to 10 kt in the afternoon. Waves 1 to 2 ft. .SAT NIGHT...SW winds 10 to 15 kt. Waves 2 ft. .SUN...SW winds 5 to 10 kt. Waves 1 ft. .SUN NIGHT...S winds 5 kt. Waves less than 1 ft. .MON...S winds 10 to 15 kt. Waves 1 to 2 ft. .TUE...SW winds 5 to 10 kt...becoming NW after midnight. Waves 1 ft. $$ ANZ543-220900- Tangier Sound and the inland waters surrounding Bloodsworth Island- 1235 PM EST Fri Feb 21 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .THIS AFTERNOON...NW winds 20 kt with gusts to 30 kt. Waves 2 to 3 ft. .TONIGHT...NW winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft. .SAT...NW winds 10 to 15 kt...becoming SW 5 to 10 kt in the afternoon. Waves 1 ft. .SAT NIGHT...SW winds 10 to 15 kt. Waves 1 ft. .SUN...SW winds 5 to 10 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. .TUE...SW winds 5 to 10 kt...becoming NW after midnight. Waves 1 ft. $$