National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Coastal Waters Forecast
Issued by NWS Sterling, VA

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FZUS51 KLWX 241736
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
135 PM EDT Sun Aug 24 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.

ANZ500-250800-
135 PM EDT Sun Aug 24 2025

.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...

A cold front will move through early Monday. High pressure will
follow for much of the week. Small Craft Advisories may be needed in
 northwest flow Monday night, and Tuesday night into Wednesday.

$$

ANZ535-250800-
Tidal Potomac from Key Bridge to Indian Head-
135 PM EDT Sun Aug 24 2025

.THIS AFTERNOON...SE winds 5 kt. Waves less than 1 ft.
.TONIGHT...S winds around 5 kt. Waves 1 ft.
.MON...NW winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.TUE...NW winds around 5 kt. Waves 1 ft.
.TUE NIGHT...NW winds 5 kt. Waves less than 1 ft.
.WED...NW winds around 5 kt. Waves 1 ft or less.
.THU...SW winds around 5 kt. Waves 1 ft.

$$

ANZ536-250800-
Tidal Potomac from Indian Head to Cobb Island-
135 PM EDT Sun Aug 24 2025

.THIS AFTERNOON...SE winds 5 kt. Waves less than 1 ft.
.TONIGHT...S winds 5 kt. Waves less than 1 ft.
.MON...NW winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...NW winds 5 kt. Waves less than 1 ft.
.TUE...NW winds 5 kt. Waves less than 1 ft.
.TUE NIGHT...NW winds 5 kt. Waves less than 1 ft.
.WED...NW winds around 5 kt. Waves 1 ft.
.THU...SW winds around 5 kt. Waves 1 ft.

$$

ANZ537-250800-
Tidal Potomac from Cobb Island to Smith Point-
135 PM EDT Sun Aug 24 2025

.THIS AFTERNOON...SE winds 10 kt. Waves 1 ft.
.TONIGHT...S winds 5 to 10 kt...becoming SW late. Waves 1 ft.
.MON...NW winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.TUE...NW winds 5 to 10 kt. Waves 1 ft.
.TUE NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.WED...NW winds 5 to 10 kt. Waves 1 ft or less.
.THU...SW winds 5 to 10 kt. Waves 1 ft or less.

$$

ANZ530-250800-
Chesapeake Bay north of Pooles Island-
135 PM EDT Sun Aug 24 2025

.THIS AFTERNOON...S winds 10 kt. Waves 1 ft.
.TONIGHT...S winds 5 to 10 kt. Waves 1 ft or less.
.MON...NW winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.TUE...NW winds 5 to 10 kt. Waves 1 ft.
.TUE NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.WED...NW winds 5 to 10 kt. Waves 1 ft or less.
.THU...SW winds around 5 kt. Waves 1 ft or less.

$$

ANZ531-250800-
Chesapeake Bay from Pooles Island to Sandy Point-
135 PM EDT Sun Aug 24 2025

.THIS AFTERNOON...S winds 10 kt. Waves 1 ft.
.TONIGHT...S winds 5 to 10 kt. Waves 1 ft.
.MON...NW winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.TUE...NW winds 5 to 10 kt. Waves 1 ft.
.TUE NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.WED...NW winds 5 to 10 kt. Waves 1 ft or less.
.THU...SW winds 5 to 10 kt. Waves 1 ft or less.

$$

ANZ538-250800-
Patapsco River including Baltimore Harbor-
135 PM EDT Sun Aug 24 2025

.THIS AFTERNOON...SE winds 10 kt. Waves 1 ft.
.TONIGHT...S winds 5 to 10 kt. Waves 1 ft or less.
.MON...NW winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.TUE...NW winds 5 kt. Waves less than 1 ft.
.TUE NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.WED...NW winds around 5 kt. Waves 1 ft or less.
.THU...SW winds 5 kt. Waves less than 1 ft.

$$

ANZ539-250800-
Chester River to Queenstown MD-
135 PM EDT Sun Aug 24 2025

.THIS AFTERNOON...S winds 10 kt. Waves 1 ft.
.TONIGHT...S winds 5 to 10 kt. Waves 1 ft.
.MON...NW winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.TUE...NW winds 5 kt. Waves less than 1 ft.
.TUE NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.WED...NW winds 5 to 10 kt. Waves 1 ft or less.
.THU...SW winds 5 to 10 kt. Waves 1 ft or less.

$$

ANZ532-250800-
Chesapeake Bay from Sandy Point to North Beach-
135 PM EDT Sun Aug 24 2025

.THIS AFTERNOON...S winds 10 kt. Waves 1 to 2 ft.
.TONIGHT...S winds 5 to 10 kt. Waves 1 to 2 ft.
.MON...NW winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.TUE...NW winds 5 to 10 kt. Waves 1 ft.
.TUE NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.WED...NW winds 5 to 10 kt. Waves 1 ft or less.
.THU...SW winds 5 to 10 kt. Waves 1 ft or less.

$$

ANZ540-250800-
Eastern Bay-
135 PM EDT Sun Aug 24 2025

.THIS AFTERNOON...S winds 10 kt. Waves 1 ft.
.TONIGHT...S winds 5 to 10 kt. Waves 1 ft.
.MON...NW winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.TUE...NW winds 5 kt. Waves less than 1 ft.
.TUE NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.WED...NW winds 5 to 10 kt. Waves 1 ft or less.
.THU...SW winds 5 to 10 kt. Waves 1 ft or less.

$$

ANZ533-250800-
Chesapeake Bay from North Beach to Drum Point-
135 PM EDT Sun Aug 24 2025

.THIS AFTERNOON...SE winds 10 kt. Waves 1 to 2 ft.
.TONIGHT...S winds 5 to 10 kt. Waves 1 to 2 ft.
.MON...NW winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.TUE...NW winds 5 to 10 kt. Waves 1 ft.
.TUE NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.WED...NW winds 5 to 10 kt. Waves 1 ft.
.THU...SW winds 5 to 10 kt. Waves 1 ft or less.

$$

ANZ541-250800-
Choptank River to Cambridge MD and the Little Choptank River-
135 PM EDT Sun Aug 24 2025

.THIS AFTERNOON...S winds 10 kt. Waves 1 ft.
.TONIGHT...S winds 5 to 10 kt. Waves 1 ft.
.MON...NW winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.TUE...NW winds 5 to 10 kt. Waves 1 ft.
.TUE NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.WED...NW winds 5 to 10 kt. Waves 1 ft or less.
.THU...SW winds 5 to 10 kt. Waves 1 ft or less.

$$

ANZ542-250800-
Patuxent River to Broomes Island MD-
135 PM EDT Sun Aug 24 2025

.THIS AFTERNOON...SE winds 10 kt. Waves 1 ft.
.TONIGHT...S winds 5 to 10 kt. Waves 1 ft.
.MON...NW winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...NW winds 5 kt. Waves less than 1 ft.
.TUE...NW winds 5 kt. Waves less than 1 ft.
.TUE NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.WED...NW winds 5 to 10 kt. Waves 1 ft.
.THU...SW winds around 5 kt. Waves 1 ft.

$$

ANZ534-250800-
Chesapeake Bay from Drum Point to Smith Point-
135 PM EDT Sun Aug 24 2025

.THIS AFTERNOON...SE winds 10 kt. Waves 1 ft.
.TONIGHT...S winds 5 to 10 kt. Waves 1 ft.
.MON...NW winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.TUE...NW winds 5 to 10 kt. Waves 1 ft.
.TUE NIGHT...NW winds 5 to 10 kt. Waves 1 to 2 ft.
.WED...NW winds 5 to 10 kt. Waves 1 to 2 ft.
.THU...SW winds 5 to 10 kt...becoming S. Waves 1 ft.

$$

ANZ543-250800-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
135 PM EDT Sun Aug 24 2025

.THIS AFTERNOON...S winds 10 kt. Waves 1 ft.
.TONIGHT...S winds 5 to 10 kt. Waves 1 ft.
.MON...NW winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.TUE...NW winds 5 to 10 kt. Waves 1 ft.
.TUE NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.WED...N winds 5 to 10 kt. Waves 1 ft.
.THU...SW winds 5 to 10 kt...becoming S. Waves 1 ft.

$$