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 241304
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
904 AM 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.

ANZ500-242000-
904 AM EDT Sun Aug 24 2025

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

A stronger cold front approaches from the west today before moving
through early Monday. High pressure will follow for much of next
week. Small Craft Advisories may be needed for portions of the
waters this evening in southerly channeling, and again Monday night
in northwest flow.

$$

ANZ535-242000-
Tidal Potomac from Key Bridge to Indian Head-
904 AM EDT Sun Aug 24 2025

.REST OF TODAY...S winds 5 kt. Waves less than 1 ft. A slight chance
of showers and tstms this afternoon.
.TONIGHT...S winds around 5 kt. Waves 1 ft. A chance of showers.
.MON...NW winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...NW winds 5 kt. Waves less than 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.

Winds and waves higher and visibilities lower in and near tstms.

$$

ANZ536-242000-
Tidal Potomac from Indian Head to Cobb Island-
904 AM EDT Sun Aug 24 2025

.REST OF TODAY...S 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.

$$

ANZ537-242000-
Tidal Potomac from Cobb Island to Smith Point-
904 AM EDT Sun Aug 24 2025

.REST OF TODAY...SE winds 5 to 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.

$$

ANZ530-242000-
Chesapeake Bay north of Pooles Island-
904 AM EDT Sun Aug 24 2025

.REST OF TODAY...S winds 10 kt. Waves 1 ft.
.TONIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers. Vsby
1 to 3 NM.
.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 around 5 kt. Waves 1 ft.

$$

ANZ531-242000-
Chesapeake Bay from Pooles Island to Sandy Point-
904 AM EDT Sun Aug 24 2025

.REST OF TODAY...S winds 10 kt. Waves 1 ft.
.TONIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.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 kt. Waves less than 1 ft.

$$

ANZ538-242000-
Patapsco River including Baltimore Harbor-
904 AM EDT Sun Aug 24 2025

.REST OF TODAY...S winds 5 to 10 kt. Waves 1 ft.
.TONIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.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 or less.
.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 5 kt. Waves less than 1 ft.

$$

ANZ539-242000-
Chester River to Queenstown MD-
904 AM EDT Sun Aug 24 2025

.REST OF TODAY...S winds 5 to 10 kt. Waves 1 ft.
.TONIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.MON...NW winds 5 kt. Waves less than 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.
.THU...SW winds 5 kt. Waves less than 1 ft.

$$

ANZ532-242000-
Chesapeake Bay from Sandy Point to North Beach-
904 AM EDT Sun Aug 24 2025

.REST OF TODAY...S winds 10 kt. Waves 1 to 2 ft.
.TONIGHT...S winds 5 to 10 kt. Waves 1 to 2 ft. A chance of showers.
.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.

$$

ANZ540-242000-
Eastern Bay-
904 AM EDT Sun Aug 24 2025

.REST OF TODAY...S winds 5 to 10 kt. Waves 1 ft.
.TONIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.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 kt. Waves less than 1 ft.

$$

ANZ533-242000-
Chesapeake Bay from North Beach to Drum Point-
904 AM EDT Sun Aug 24 2025

.REST OF TODAY...S winds 5 to 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.

$$

ANZ541-242000-
Choptank River to Cambridge MD and the Little Choptank River-
904 AM EDT Sun Aug 24 2025

.REST OF TODAY...S winds 5 to 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.
.THU...SW winds 5 to 10 kt. Waves 1 ft or less.

$$

ANZ542-242000-
Patuxent River to Broomes Island MD-
904 AM EDT Sun Aug 24 2025

.REST OF TODAY...SE winds 5 to 10 kt. Waves 1 ft.
.TONIGHT...S winds 5 to 10 kt. Waves 1 ft.
.MON...NW winds 5 kt. Waves less than 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 5 to 10 kt. Waves 1 ft.
.THU...SW winds 5 kt. Waves less than 1 ft.

$$

ANZ534-242000-
Chesapeake Bay from Drum Point to Smith Point-
904 AM EDT Sun Aug 24 2025

.REST OF TODAY...SE winds 10 kt. Waves 1 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 to 2 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 to 2 ft.
.THU...SW winds 5 kt...becoming S. Waves 1 ft.

$$

ANZ543-242000-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
904 AM EDT Sun Aug 24 2025

.REST OF TODAY...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 ft.
.WED...N winds 5 to 10 kt. Waves 1 ft.
.THU...W winds 5 kt...becoming S. Waves 1 ft.

$$