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 221433
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
1033 AM 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.

ANZ500-222000-
1033 AM EDT Fri Aug 22 2025

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

Weak high pressure returns into Saturday. A stronger cold front
approaches from the west late in the weekend before moving through
early Monday. Small Craft Advisories will gradually drop off from
north to south this morning.

$$

ANZ535-222000-
Tidal Potomac from Key Bridge to Indian Head-
1033 AM EDT Fri Aug 22 2025

.REST OF TODAY...NE winds 5 kt. Waves less than 1 ft.
.TONIGHT...SE winds around 5 kt. Waves 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 around 5 kt. Waves 1 ft. A chance of showers.
.MON...NW winds 5 to 10 kt. Waves 1 ft.
.TUE...NW winds 5 to 10 kt. Waves 1 ft.

$$

ANZ536-222000-
Tidal Potomac from Indian Head to Cobb Island-
1033 AM EDT Fri Aug 22 2025

.REST OF TODAY...NE winds 5 kt. Waves less than 1 ft.
.TONIGHT...SE winds around 5 kt. Waves 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 kt. Waves less than 1 ft.
.TUE...NW winds 5 kt. Waves less than 1 ft.

$$

ANZ537-222000-
Tidal Potomac from Cobb Island to Smith Point-
1033 AM EDT Fri Aug 22 2025

.REST OF TODAY...NE winds 5 to 10 kt. Waves 1 ft.
.TONIGHT...SE winds around 5 kt. Waves 1 ft.
.SAT...SE winds 5 to 10 kt. Waves 1 ft or less.
.SAT NIGHT...S winds 5 to 10 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.
.MON...NW winds 5 to 10 kt. Waves 1 ft.
.TUE...NW winds 5 to 10 kt. Waves 1 ft.

$$

ANZ530-222000-
Chesapeake Bay north of Pooles Island-
1033 AM EDT Fri Aug 22 2025

.REST OF TODAY...NE winds 5 kt. Waves less than 1 ft.
.TONIGHT...S winds around 5 kt. Waves 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. Waves 1 ft. A chance of showers in the
morning.
.TUE...NW winds 5 to 10 kt. Waves 1 ft.

$$

ANZ531-222000-
Chesapeake Bay from Pooles Island to Sandy Point-
1033 AM EDT Fri Aug 22 2025

.REST OF TODAY...NE winds 5 to 10 kt. Waves 1 ft.
.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. Waves 2 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 to 2 ft. A chance of
showers.
.MON...NW winds 5 to 10 kt. Waves 1 ft. A chance of showers in the
morning.
.TUE...NW winds 5 to 10 kt. Waves 1 ft.

$$

ANZ538-222000-
Patapsco River including Baltimore Harbor-
1033 AM EDT Fri Aug 22 2025

.REST OF TODAY...NE winds 5 kt. Waves flat.
.TONIGHT...S winds around 5 kt. Waves flat.
.SAT...S winds 5 to 10 kt. Waves 1 ft or less.
.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 and
tstms.
.MON...NW winds 5 to 10 kt. Waves 1 ft or less. A chance of showers
in the morning.
.TUE...NW winds 5 to 10 kt. Waves 1 ft.

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

$$

ANZ539-222000-
Chester River to Queenstown MD-
1033 AM EDT Fri Aug 22 2025

.REST OF TODAY...N winds 5 to 10 kt. Waves 1 ft.
.TONIGHT...SE winds around 5 kt. Waves 1 ft or less.
.SAT...S winds 5 to 10 kt. Waves 1 ft or less.
.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. Waves 1 ft. A chance of showers in the
morning.
.TUE...NW winds 5 to 10 kt. Waves 1 ft.

$$

ANZ532-222000-
Chesapeake Bay from Sandy Point to North Beach-
1033 AM EDT Fri Aug 22 2025

.REST OF TODAY...NE winds 5 to 10 kt. Waves 1 ft.
.TONIGHT...SE winds 5 to 10 kt. 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 ft.
.SUN...S winds 5 to 10 kt. Waves 1 to 2 ft. A chance of showers.
.SUN NIGHT...S winds 10 to 15 kt. Waves 2 ft. A chance of showers.
.MON...NW winds 5 to 10 kt. Waves 1 ft. A chance of showers in the
morning.
.TUE...NW winds 5 to 10 kt. Waves 1 ft.

$$

ANZ540-222000-
Eastern Bay-
1033 AM EDT Fri Aug 22 2025

.REST OF TODAY...N winds 5 to 10 kt. Waves 1 ft.
.TONIGHT...SE winds 5 kt. Waves less than 1 ft.
.SAT...S winds 5 to 10 kt. Waves 1 ft or less.
.SAT NIGHT...S winds 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. A chance of showers.
.MON...NW winds 5 to 10 kt. Waves 1 ft. A chance of showers in the
morning.
.TUE...NW winds 5 to 10 kt. Waves 1 ft.

$$

ANZ533-222000-
Chesapeake Bay from North Beach to Drum Point-
1033 AM EDT Fri Aug 22 2025

.REST OF TODAY...N winds 5 to 10 kt. Waves 1 ft.
.TONIGHT...SE winds 5 to 10 kt...becoming S late. 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 ft.
.SUN...S winds 10 to 15 kt. Waves 1 to 2 ft.
.SUN NIGHT...S winds 10 to 15 kt. Waves 1 to 2 ft. A chance of
showers.
.MON...NW winds 5 to 10 kt. Waves 1 ft.
.TUE...NW winds 5 to 10 kt. Waves 1 ft.

$$

ANZ541-222000-
Choptank River to Cambridge MD and the Little Choptank River-
1033 AM EDT Fri Aug 22 2025

.REST OF TODAY...N winds 5 to 10 kt. Waves 1 ft.
.TONIGHT...SE winds 5 kt. Waves less than 1 ft.
.SAT...S winds 5 to 10 kt. Waves 1 ft or less.
.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...NW winds 5 to 10 kt. Waves 1 ft. A chance of showers in the
morning.
.TUE...NW winds 5 to 10 kt. Waves 1 ft.

$$

ANZ542-222000-
Patuxent River to Broomes Island MD-
1033 AM EDT Fri Aug 22 2025

.REST OF TODAY...N winds 5 to 10 kt. Waves 1 ft.
.TONIGHT...SE winds around 5 kt. Waves 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. A chance of showers.
.MON...NW winds 5 kt. Waves less than 1 ft.
.TUE...NW winds 5 to 10 kt. Waves 1 ft.

$$

ANZ534-222000-
Chesapeake Bay from Drum Point to Smith Point-
1033 AM EDT Fri Aug 22 2025

.REST OF TODAY...N winds 5 to 10 kt. Waves 1 to 2 ft.
.TONIGHT...SE winds 5 to 10 kt. Waves 1 ft.
.SAT...SE winds 5 to 10 kt. Waves 1 to 2 ft.
.SAT NIGHT...S winds 10 to 15 kt. Waves 2 ft.
.SUN...S winds 5 to 10 kt. Waves 1 to 2 ft.
.SUN NIGHT...S winds 10 to 15 kt. Waves 2 ft. A chance of showers.
.MON...NW winds 5 to 10 kt. Waves 1 to 2 ft.
.TUE...NW winds 5 to 10 kt. Waves 1 to 2 ft.

$$

ANZ543-222000-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
1033 AM EDT Fri Aug 22 2025

.REST OF TODAY...N winds 5 to 10 kt. Waves 1 ft.
.TONIGHT...SE winds 5 to 10 kt. Waves 1 ft.
.SAT...SE winds 5 to 10 kt. Waves 1 ft or less.
.SAT NIGHT...S winds 10 to 15 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.
.MON...NW winds 5 to 10 kt. Waves 1 ft. A chance of showers in the
evening.
.TUE...NW winds 5 to 10 kt. Waves 1 ft.

$$