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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721
FZUS51 KLWX 222334
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
734 PM EDT Fri Aug 22 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.

ANZ500-230800-
734 PM EDT Fri Aug 22 2025

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

Weak high pressure returns through Saturday. A stronger cold front
approaches from the west Sunday before moving through early Monday.
Small Craft Advisories may be needed for portions of the waters
Saturday afternoon and evening due to southerly channeling.

$$

ANZ535-230800-
Tidal Potomac from Key Bridge to Indian Head-
734 PM EDT Fri Aug 22 2025

.TONIGHT...SE winds 5 kt. Waves less than 1 ft.
.SAT...S winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.SUN...S winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.SUN NIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.MON...NW winds 5 to 10 kt with gusts to 20 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.
.WED...NW winds around 5 kt. Waves 1 ft.

$$

ANZ536-230800-
Tidal Potomac from Indian Head to Cobb Island-
734 PM EDT Fri Aug 22 2025

.TONIGHT...SE winds 5 kt. Waves less than 1 ft.
.SAT...S winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.SUN...S winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...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.
.WED...NW winds around 5 kt. Waves 1 ft.

$$

ANZ537-230800-
Tidal Potomac from Cobb Island to Smith Point-
734 PM EDT Fri Aug 22 2025

.TONIGHT...SE winds 5 to 10 kt...becoming S late. Waves 1 ft.
.SAT...SE winds 10 to 15 kt. Waves 1 to 2 ft.
.SAT NIGHT...S winds 10 to 15 kt. Waves 2 ft.
.SUN...S winds 10 to 15 kt. Waves 1 to 2 ft.
.SUN NIGHT...SE winds 10 to 15 kt...becoming S 5 to 10 kt after
midnight. 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.
.WED...N winds 5 to 10 kt. Waves 1 ft.

$$

ANZ530-230800-
Chesapeake Bay north of Pooles Island-
734 PM EDT Fri Aug 22 2025

.TONIGHT...S winds 5 to 10 kt. Waves 1 ft.
.SAT...S winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.SUN...S winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.
.MON...W 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.
.WED...NW winds 5 to 10 kt. Waves 1 ft.

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

$$

ANZ531-230800-
Chesapeake Bay from Pooles Island to Sandy Point-
734 PM EDT Fri Aug 22 2025

.TONIGHT...S winds 5 to 10 kt. Waves 1 ft or less.
.SAT...S winds 10 to 15 kt. Waves 1 to 2 ft.
.SAT NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SUN...S winds 10 to 15 kt. Waves 1 to 2 ft.
.SUN NIGHT...S winds 10 to 15 kt. Waves 2 ft. A chance of showers
and tstms.
.MON...NW winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...NW winds 10 kt. Waves 1 ft.
.TUE...NW winds 5 to 10 kt. Waves 1 ft.
.WED...NW winds 5 to 10 kt. Waves 1 ft.

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

$$

ANZ538-230800-
Patapsco River including Baltimore Harbor-
734 PM EDT Fri Aug 22 2025

.TONIGHT...S winds 5 kt. Waves less than 1 ft.
.SAT...S winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.SUN...S winds 10 to 15 kt. Waves 1 ft. A chance of showers.
.SUN NIGHT...S winds 10 to 15 kt. Waves 1 ft. A chance of showers
and tstms.
.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.
.WED...NW winds 5 kt. Waves less than 1 ft.

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

$$

ANZ539-230800-
Chester River to Queenstown MD-
734 PM EDT Fri Aug 22 2025

.TONIGHT...S winds 5 to 10 kt. Waves 1 ft or less.
.SAT...S winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft.
.SUN...S winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...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.
.WED...NW winds 5 to 10 kt. Waves 1 ft.

$$

ANZ532-230800-
Chesapeake Bay from Sandy Point to North Beach-
734 PM EDT Fri Aug 22 2025

.TONIGHT...SE winds 5 to 10 kt. Waves 1 ft or less.
.SAT...S winds 10 to 15 kt. Waves 1 to 2 ft.
.SAT NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 to
3 ft.
.SUN...S winds 10 to 15 kt. Waves 2 ft.
.SUN NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A
chance of showers.
.MON...NW winds 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.
.WED...NW winds 5 to 10 kt. Waves 1 ft.

$$

ANZ540-230800-
Eastern Bay-
734 PM EDT Fri Aug 22 2025

.TONIGHT...SE winds 5 to 10 kt. Waves 1 ft or less.
.SAT...S winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.SUN...S winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...S winds 10 to 15 kt. Waves 1 ft. A chance of showers.
.MON...W 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.
.WED...NW winds 5 to 10 kt. Waves 1 ft or less.

$$

ANZ533-230800-
Chesapeake Bay from North Beach to Drum Point-
734 PM EDT Fri Aug 22 2025

.TONIGHT...E winds 5 kt...becoming S late this evening and
overnight. Waves 1 ft.
.SAT...S winds 10 to 15 kt. Waves 1 to 2 ft.
.SAT NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 to
3 ft.
.SUN...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.SUN NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 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.
.WED...N winds 5 to 10 kt. Waves 1 ft.

$$

ANZ541-230800-
Choptank River to Cambridge MD and the Little Choptank River-
734 PM EDT Fri Aug 22 2025

.TONIGHT...SE winds 5 to 10 kt...becoming S after midnight. Waves
1 ft or less.
.SAT...S winds 10 to 15 kt. Waves 1 ft.
.SAT NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SUN...S winds 10 to 15 kt. Waves 1 ft.
.SUN NIGHT...S winds 10 to 15 kt. Waves 1 ft. A chance of showers.
.MON...NW winds 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.
.WED...N winds 5 to 10 kt. Waves 1 ft.

$$

ANZ542-230800-
Patuxent River to Broomes Island MD-
734 PM EDT Fri Aug 22 2025

.TONIGHT...SE winds 5 kt. Waves less than 1 ft.
.SAT...S winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.SUN...S winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...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.
.WED...N winds 5 to 10 kt. Waves 1 ft.

$$

ANZ534-230800-
Chesapeake Bay from Drum Point to Smith Point-
734 PM EDT Fri Aug 22 2025

.TONIGHT...SE winds 5 to 10 kt...becoming S late. Waves 1 ft.
.SAT...SE winds 10 to 15 kt. Waves 1 to 2 ft.
.SAT NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SUN...S winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Waves 1 to 2 ft.
.SUN NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.MON...NW winds 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 to 2 ft.
.WED...N winds 5 to 10 kt. Waves 1 to 2 ft.

$$

ANZ543-230800-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
734 PM EDT Fri Aug 22 2025

.TONIGHT...SE winds 10 kt. Waves 1 ft.
.SAT...SE winds 10 to 15 kt. Waves 1 ft.
.SAT NIGHT...SE winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.SUN...S winds 10 to 15 kt. Waves 1 ft.
.SUN NIGHT...S winds 10 to 15 kt. Waves 1 ft.
.MON...W winds 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.
.WED...N winds 5 to 10 kt. Waves 1 ft.

$$