373
FZUS51 KLWX 171547
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
1147 AM EDT Fri Oct 17 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.

ANZ500-180500-
1147 AM EDT Fri Oct 17 2025

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

High pressure will build to the north at the end of the week into
the weekend. A strong cold front will cross the region Sunday into
Monday. Small Craft Advisories will likely be needed through this
morning and again Sunday into early next week.

$$

ANZ535-180500-
Tidal Potomac from Key Bridge to Indian Head-
1147 AM EDT Fri Oct 17 2025

.THIS AFTERNOON...NW winds 5 kt. Waves less than 1 ft.
.TONIGHT...W winds around 5 kt. Waves 1 ft or less.
.SAT...S winds around 5 kt. Waves 1 ft.
.SAT NIGHT...SE winds 5 to 10 kt. Waves 1 ft.
.SUN...S winds 10 to 15 kt. Gusts up to 20 kt... increasing to 30 kt
in the afternoon. Waves 1 to 2 ft. A chance of showers.
.SUN NIGHT...S winds 10 to 15 kt with gusts to 30 kt... becoming SW
with gusts to 20 kt after midnight. Waves 1 to 2 ft. Showers likely.
.MON...W winds 10 to 15 kt. Waves 1 ft. A chance of showers in the
morning.
.TUE...SW winds 5 to 10 kt...becoming W after midnight. Waves 1 ft.

$$

ANZ536-180500-
Tidal Potomac from Indian Head to Cobb Island-
1147 AM EDT Fri Oct 17 2025

.THIS AFTERNOON...NW winds 5 to 10 kt. Waves 1 ft.
.TONIGHT...W winds around 5 kt. Waves 1 ft or less.
.SAT...S winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.SUN...S winds 15 to 20 kt. Gusts up to 20 kt... increasing to 30 kt
in the afternoon. Waves 1 to 2 ft. A chance of showers.
.SUN NIGHT...S winds 15 to 20 kt with gusts to 30 kt... becoming SW
after midnight. Waves 1 to 2 ft. Showers likely.
.MON...W winds 10 to 15 kt...becoming SW 5 to 10 kt after midnight.
Waves 1 to 2 ft. A chance of showers in the morning.
.TUE...SW winds 10 to 15 kt...becoming W after midnight. Waves 1 ft.


$$

ANZ537-180500-
Tidal Potomac from Cobb Island to Smith Point-
1147 AM EDT Fri Oct 17 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON...

.THIS AFTERNOON...NW winds 10 to 15 kt with gusts to 20 kt. Waves
1 to 2 ft.
.TONIGHT...NW winds around 5 kt. Waves 1 ft or less.
.SAT...SW winds around 5 kt...becoming SE late. Waves 1 ft or less.
.SAT NIGHT...S winds 10 to 15 kt. Waves 1 to 2 ft.
.SUN...S winds 15 to 20 kt with gusts to 25 kt. Waves 2 to 3 ft.
.SUN NIGHT...S winds 15 to 20 kt...becoming SW after midnight. Gusts
up to 25 kt. Waves 2 to 3 ft. Showers.
.MON...W winds 15 to 20 kt...diminishing to 5 to 10 kt. Waves 1 to
2 ft. A chance of showers in the morning.
.TUE...SW winds 10 to 15 kt...becoming W after midnight. Waves 1 to
2 ft.

$$

ANZ530-180500-
Chesapeake Bay north of Pooles Island-
1147 AM EDT Fri Oct 17 2025

.THIS AFTERNOON...N winds 10 kt. Waves 1 ft.
.TONIGHT...N winds around 5 kt. Waves 1 ft.
.SAT...SE winds around 5 kt. Waves 1 ft or less.
.SAT NIGHT...SE winds 5 to 10 kt. Waves 1 ft.
.SUN...S winds 15 to 20 kt with gusts to 25 kt. Waves 1 to 2 ft. A
chance of showers.
.SUN NIGHT...S winds 20 to 25 kt...becoming SW after midnight. Waves
2 ft. Showers.
.MON...W winds 15 to 20 kt...diminishing to 5 to 10 kt after
midnight. Waves 1 to 2 ft.
.TUE...SW winds 10 to 15 kt...becoming W after midnight. Waves 1 to
2 ft. A chance of showers through the night.

$$

ANZ531-180500-
Chesapeake Bay from Pooles Island to Sandy Point-
1147 AM EDT Fri Oct 17 2025

.THIS AFTERNOON...N winds 10 kt. Waves 1 to 2 ft.
.TONIGHT...N winds 5 to 10 kt. Waves 1 ft or less.
.SAT...E winds around 5 kt...becoming S in the afternoon. Waves 1 ft
or less.
.SAT NIGHT...S winds 10 to 15 kt. Waves 1 to 2 ft.
.SUN...S winds 10 to 15 kt with gusts to 20 kt... increasing to
20 to 25 kt with gusts to 30 kt in the afternoon. Waves 2 to 3 ft. A
chance of showers.
.SUN NIGHT...S winds 20 to 25 kt...becoming SW after midnight. Gusts
up to 30 kt. Waves 3 ft. Showers.
.MON...W winds 15 to 20 kt...diminishing to 10 kt after midnight.
Waves 2 to 3 ft...subsiding to 1 ft after midnight. A chance of
showers in the morning.
.TUE...SW winds 10 to 15 kt...becoming W after midnight. Waves 1 to
2 ft. A chance of showers through the night.

$$

ANZ538-180500-
Patapsco River including Baltimore Harbor-
1147 AM EDT Fri Oct 17 2025

.THIS AFTERNOON...N winds 10 kt. Waves 1 ft.
.TONIGHT...N winds around 5 kt. Waves 1 ft or less.
.SAT...E winds around 5 kt...becoming SE late. Waves 1 ft or less.
.SAT NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.SUN...S winds 10 to 15 kt with gusts to 25 kt. Waves 1 to 2 ft. A
chance of showers.
.SUN NIGHT...S winds 15 kt...becoming SW after midnight. Gusts up to
25 kt. Waves 1 to 2 ft. Showers.
.MON...W winds 10 to 15 kt. Waves 1 ft. A chance of showers in the
morning.
.TUE...SW winds 5 to 10 kt. Waves 1 ft. A chance of showers through
the night.

$$

ANZ539-180500-
Chester River to Queenstown MD-
1147 AM EDT Fri Oct 17 2025

.THIS AFTERNOON...N winds 10 kt. Waves 1 ft.
.TONIGHT...N winds around 5 kt. Waves 1 ft or less.
.SAT...SE winds around 5 kt. Waves 1 ft or less.
.SAT NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.SUN...S winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft. A chance
of showers.
.SUN NIGHT...S winds 15 to 20 kt...becoming SW after midnight. Gusts
up to 25 kt. Waves 2 to 3 ft. Showers.
.MON...W winds 10 to 15 kt. Waves 2 to 3 ft...subsiding to 1 ft
after midnight. A chance of showers in the morning.
.TUE...SW winds 10 to 15 kt. Waves 1 to 2 ft. A chance of showers
through the night.

$$

ANZ532-180500-
Chesapeake Bay from Sandy Point to North Beach-
1147 AM EDT Fri Oct 17 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON...

.THIS AFTERNOON...N winds 10 to 15 kt with gusts to 20 kt. Waves
1 to 2 ft.
.TONIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.SAT...SW winds around 5 kt...becoming S in the afternoon. Waves
1 ft or less.
.SAT NIGHT...S winds 10 to 15 kt. Waves 2 ft.
.SUN...S winds 20 to 25 kt. Gusts up to 30 kt in the afternoon.
Waves 3 ft. A chance of showers.
.SUN NIGHT...S winds 20 to 25 kt...becoming SW after midnight. Gusts
up to 30 kt. Waves 3 ft. Showers.
.MON...W winds 15 to 20 kt...diminishing to 10 kt after midnight.
Waves 2 to 3 ft...subsiding to 1 ft after midnight. A chance of
showers in the morning.
.TUE...SW winds 10 to 15 kt...becoming W after midnight. Waves 2 ft.
A chance of showers through the night.

$$

ANZ540-180500-
Eastern Bay-
1147 AM EDT Fri Oct 17 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON...

.THIS AFTERNOON...N winds 10 kt. Waves 1 ft.
.TONIGHT...N winds 5 to 10 kt. Waves 1 ft or less.
.SAT...SE winds around 5 kt...becoming S late. Waves 1 ft or less.
.SAT NIGHT...S winds 10 to 15 kt. Waves 1 ft.
.SUN...S winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft. A chance
of showers.
.SUN NIGHT...S winds 20 to 25 kt...becoming SW after midnight. Waves
2 to 3 ft. Showers.
.MON...W winds 15 to 20 kt...diminishing to 10 kt after midnight.
Waves 1 to 2 ft. A chance of showers in the morning.
.TUE...SW winds 10 to 15 kt...becoming W after midnight. Waves 1 to
2 ft. A chance of showers through the night.

$$

ANZ533-180500-
Chesapeake Bay from North Beach to Drum Point-
1147 AM EDT Fri Oct 17 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON...

.THIS AFTERNOON...N winds 10 to 15 kt with gusts to 20 kt. Waves
2 ft.
.TONIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.SAT...SW winds around 5 kt...becoming S in the afternoon. Waves
1 ft or less.
.SAT NIGHT...S winds 10 to 15 kt. Waves 2 ft.
.SUN...S winds 20 to 25 kt. Gusts up to 30 kt in the afternoon.
Waves 2 ft...building to 4 ft in the afternoon.
.SUN NIGHT...S winds 20 to 25 kt...becoming SW after midnight. Gusts
up to 30 kt. Waves 3 ft. Showers.
.MON...W winds 15 to 20 kt...becoming SW 10 kt after midnight. Waves
2 to 3 ft...subsiding to 1 ft after midnight. A chance of showers in
the morning.
.TUE...SW winds 15 to 20 kt...becoming W after midnight. Waves 2 ft.


$$

ANZ541-180500-
Choptank River to Cambridge MD and the Little Choptank River-
1147 AM EDT Fri Oct 17 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON...

.THIS AFTERNOON...N winds 10 to 15 kt. Waves 1 to 2 ft.
.TONIGHT...N winds 5 to 10 kt. Waves 1 ft.
.SAT...SW winds around 5 kt...becoming S late. Waves 1 ft or less.
.SAT NIGHT...S winds 10 to 15 kt. Waves 1 to 2 ft.
.SUN...S winds 10 to 15 kt with gusts to 20 kt... increasing to
20 to 25 kt with gusts to 30 kt in the afternoon. Waves 2 ft.
.SUN NIGHT...S winds 20 to 25 kt...becoming SW after midnight. Gusts
up to 30 kt. Waves 3 ft. Showers.
.MON...W winds 15 to 20 kt...diminishing to 5 to 10 kt after
midnight. Waves 2 to 3 ft...subsiding to 1 ft after midnight. A
chance of showers in the morning.
.TUE...SW winds 10 to 15 kt...becoming W after midnight. Waves 1 to
2 ft. A chance of showers through the night.

$$

ANZ542-180500-
Patuxent River to Broomes Island MD-
1147 AM EDT Fri Oct 17 2025

.THIS AFTERNOON...N winds 10 kt. Waves 1 ft.
.TONIGHT...NW winds around 5 kt. Waves 1 ft.
.SAT...SW winds around 5 kt...becoming SE late. Waves 1 ft.
.SAT NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.SUN...S winds 15 to 20 kt with gusts to 25 kt. Waves 1 ft.
.SUN NIGHT...S winds 15 kt...becoming SW after midnight. Gusts up to
25 kt. Waves 1 ft. Showers.
.MON...W winds 10 to 15 kt. Waves 1 ft. A chance of showers in the
morning.
.TUE...SW winds 10 to 15 kt...becoming W after midnight. Waves 1 ft.


$$

ANZ534-180500-
Chesapeake Bay from Drum Point to Smith Point-
1147 AM EDT Fri Oct 17 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON...

.THIS AFTERNOON...N winds 15 to 20 kt. Waves 2 to 3 ft.
.TONIGHT...NW winds 5 to 10 kt. Waves 1 to 2 ft.
.SAT...SW winds 5 kt...becoming S late. Waves 1 ft.
.SAT NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SUN...S winds 20 to 25 kt. Gusts up to 30 kt in the afternoon.
Waves 3 ft.
.SUN NIGHT...S winds 25 to 30 kt...becoming SW 20 to 25 kt after
midnight. Waves 4 ft. Showers.
.MON...W winds 15 to 20 kt. Waves 2 to 3 ft. A chance of showers in
the morning.
.TUE...SW winds 15 to 20 kt...becoming W after midnight. Waves 2 to
3 ft.

$$

ANZ543-180500-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
1147 AM EDT Fri Oct 17 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON...

.THIS AFTERNOON...N winds 15 kt with gusts to 20 kt. Waves 1 to
2 ft.
.TONIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.SAT...W winds 5 kt...becoming S in the afternoon. Waves 1 ft or
less.
.SAT NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft.
.SUN...S winds 20 to 25 kt. Gusts up to 30 kt in the afternoon.
Waves 2 to 3 ft.
.SUN NIGHT...S winds 25 to 30 kt...becoming SW after midnight. Waves
3 ft. Showers.
.MON...W winds 20 to 25 kt...diminishing to 10 to 15 kt. Waves 1 to
2 ft. A chance of showers in the morning.
.TUE...SW winds 15 to 20 kt...becoming W after midnight. Waves 2 ft.


$$