597
FZUS51 KLWX 090834
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
433 AM EDT Thu Oct 9 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.

ANZ500-092300-
433 AM EDT Thu Oct 9 2025

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

High pressure will build to our north for today and Friday. Coastal
low pressure will develop along the southeast U.S. coast this
weekend before lifting north toward the Delmarva early next week.
Small Craft Advisories will likely be needed this weekend, with
gales possible at times Saturday night through Monday.

$$

ANZ535-092300-
Tidal Potomac from Key Bridge to Indian Head-
433 AM EDT Thu Oct 9 2025

.REST OF THE OVERNIGHT...N winds 10 kt. Waves 1 ft.
.TODAY...NE winds 5 to 10 kt. Waves 1 ft.
.TONIGHT...NE winds around 5 kt. Waves 1 ft.
.FRI...E winds around 5 kt. Waves 1 ft.
.FRI NIGHT...E winds around 5 kt. Waves 1 ft.
.SAT...NE winds 5 to 10 kt. Gusts up to 20 kt in the afternoon.
Waves 1 ft. A chance of showers.
.SAT NIGHT...NE winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
Showers likely.
.SUN...NE winds 10 to 15 kt...becoming N after midnight. Waves 1 to
2 ft. Showers likely.
.MON...N winds 10 to 15 kt. Waves 1 to 2 ft. Showers likely in the
morning, then a chance of showers through the night.

$$

ANZ536-092300-
Tidal Potomac from Indian Head to Cobb Island-
433 AM EDT Thu Oct 9 2025

.REST OF THE OVERNIGHT...N winds 15 kt with gusts to 20 kt. Waves
1 ft.
.TODAY...NE winds 10 to 15 kt. Waves 1 ft.
.TONIGHT...NE winds 5 to 10 kt. Waves 1 ft.
.FRI...E winds 5 kt. Waves less than 1 ft.
.FRI NIGHT...E winds 5 kt. Waves less than 1 ft.
.SAT...NE winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.SAT NIGHT...NE winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
Showers likely.
.SUN...NE winds 15 to 20 kt...becoming N after midnight. Waves 1 to
2 ft. Showers likely .
.MON...N winds 15 to 20 kt. Waves 1 to 2 ft. A chance of showers.

$$

ANZ537-092300-
Tidal Potomac from Cobb Island to Smith Point-
433 AM EDT Thu Oct 9 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 PM EDT THIS AFTERNOON...

.REST OF THE OVERNIGHT...N winds 20 kt with gusts to 25 kt. Waves
3 ft.
.TODAY...NE winds 15 to 20 kt. Gusts up to 25 kt in the morning.
Waves 2 to 3 ft.
.TONIGHT...NE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.FRI...E winds 10 to 15 kt. Waves 2 ft.
.FRI NIGHT...E winds 5 to 10 kt. Waves 1 ft.
.SAT...E winds 10 to 15 kt with gusts to 20 kt. Waves 2 to 3 ft. A
chance of showers.
.SAT NIGHT...NE winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.
Showers likely.
.SUN...NE winds 25 to 30 kt...becoming N after midnight. Waves 4 ft.
Showers likely .
.MON...NW winds 20 to 25 kt. Waves 4 ft. A chance of showers.

$$

ANZ530-092300-
Chesapeake Bay north of Pooles Island-
433 AM EDT Thu Oct 9 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 PM EDT THIS AFTERNOON...

.REST OF THE OVERNIGHT...N winds 15 kt with gusts to 20 kt. Waves
1 ft.
.TODAY...NE winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.TONIGHT...NE winds 5 to 10 kt. Waves 1 ft.
.FRI...E winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...E winds 5 to 10 kt. Waves 1 ft or less.
.SAT...E winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.SAT NIGHT...E winds 15 to 20 kt with gusts to 25 kt. Waves 1 to
2 ft. Showers likely.
.SUN...NE winds 25 to 30 kt...becoming N after midnight. Waves 2 ft.
Showers likely.
.MON...N winds 20 to 25 kt. Waves 2 ft. Showers likely, mainly in
the morning.

$$

ANZ531-092300-
Chesapeake Bay from Pooles Island to Sandy Point-
433 AM EDT Thu Oct 9 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 PM EDT THIS AFTERNOON...

.REST OF THE OVERNIGHT...N winds 20 kt with gusts to 25 kt. Waves
3 ft.
.TODAY...NE winds 15 to 20 kt...diminishing to 10 kt late. Waves
2 ft.
.TONIGHT...NE winds 5 to 10 kt. Waves 1 ft.
.FRI...E winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...E winds 5 to 10 kt. Waves 1 ft.
.SAT...E winds 10 to 15 kt. Waves 1 to 2 ft. A chance of showers.
.SAT NIGHT...E winds 15 to 20 kt with gusts to 25 kt. Waves 2 to
3 ft. Showers likely.
.SUN...NE winds 25 to 30 kt...becoming N after midnight. Waves 3 ft.
Showers likely.
.MON...N winds 20 to 25 kt. Waves 3 ft. Showers likely, mainly in
the morning.

$$

ANZ538-092300-
Patapsco River including Baltimore Harbor-
433 AM EDT Thu Oct 9 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 PM EDT THIS AFTERNOON...

.REST OF THE OVERNIGHT...N winds 10 kt with gusts to 20 kt. Waves
1 ft.
.TODAY...NE winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.TONIGHT...NE winds 5 to 10 kt. Waves 1 ft.
.FRI...E winds 5 kt. Waves less than 1 ft.
.FRI NIGHT...SE winds around 5 kt. Waves 1 ft.
.SAT...E winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.SAT NIGHT...E winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
Showers likely.
.SUN...NE winds 15 to 20 kt...becoming N after midnight. Waves 2 ft.
Showers likely.
.MON...N winds 15 to 20 kt. Waves 1 ft. Showers likely, mainly in
the morning.

$$

ANZ539-092300-
Chester River to Queenstown MD-
433 AM EDT Thu Oct 9 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 PM EDT THIS AFTERNOON...

.REST OF THE OVERNIGHT...N winds 15 kt with gusts to 25 kt. Waves
2 ft.
.TODAY...NE winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.TONIGHT...NE winds 5 to 10 kt. Waves 1 ft.
.FRI...E winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...E winds 5 kt. Waves less than 1 ft.
.SAT...E winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.SAT NIGHT...E winds 15 to 20 kt with gusts to 25 kt. Waves 1 to
2 ft. Showers likely.
.SUN...NE winds 15 to 20 kt...becoming N after midnight. Waves 2 to
3 ft. Showers likely.
.MON...N winds 15 to 20 kt. Waves 3 ft. Showers likely, mainly in
the morning.

$$

ANZ532-092300-
Chesapeake Bay from Sandy Point to North Beach-
433 AM EDT Thu Oct 9 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 PM EDT THIS AFTERNOON...

.REST OF THE OVERNIGHT...N winds 20 kt with gusts to 25 kt. Waves
3 ft.
.TODAY...NE winds 15 to 20 kt. Gusts up to 25 kt in the morning.
Waves 2 to 3 ft.
.TONIGHT...NE winds 10 kt. Waves 1 ft.
.FRI...E winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...E winds 5 to 10 kt. Waves 1 ft.
.SAT...E winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Waves 1 to 2 ft. A chance of showers.
.SAT NIGHT...E winds 20 to 25 kt. Waves 2 to 3 ft. Showers likely.
.SUN...NE winds 25 to 30 kt...becoming N after midnight. Waves
3 ft...building to 4 ft. Showers likely.
.MON...N winds 25 to 30 kt. Waves 3 ft. Showers likely, mainly in
the morning.

$$

ANZ540-092300-
Eastern Bay-
433 AM EDT Thu Oct 9 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 PM EDT THIS AFTERNOON...

.REST OF THE OVERNIGHT...N winds 20 kt with gusts to 25 kt. Waves
2 ft.
.TODAY...NE winds 15 to 20 kt...diminishing to 10 kt in the
afternoon. Waves 1 to 2 ft.
.TONIGHT...NE winds 5 to 10 kt. Waves 1 ft.
.FRI...E winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...E winds 5 to 10 kt. Waves 1 ft.
.SAT...E winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.SAT NIGHT...E winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
Showers likely.
.SUN...NE winds 20 to 25 kt...becoming N after midnight. Waves 2 to
3 ft. Showers likely.
.MON...N winds 20 to 25 kt. Waves 2 ft. Showers likely, mainly in
the morning.

$$

ANZ533-092300-
Chesapeake Bay from North Beach to Drum Point-
433 AM EDT Thu Oct 9 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 PM EDT THIS AFTERNOON...

.REST OF THE OVERNIGHT...N winds 20 kt with gusts to 25 kt. Waves
4 ft.
.TODAY...NE winds 15 to 20 kt. Gusts up to 25 kt in the morning.
Waves 4 ft...subsiding to 2 ft in the afternoon.
.TONIGHT...NE winds 10 to 15 kt. Waves 2 ft.
.FRI...E winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...E winds 5 to 10 kt. Waves 1 ft.
.SAT...E winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft. A
chance of showers.
.SAT NIGHT...NE winds 20 to 25 kt. Waves 3 ft. Showers likely.
.SUN...NE winds 25 to 30 kt...becoming N after midnight. Waves
4 ft...building to 5 ft. Showers likely.
.MON...N winds 25 to 30 kt. Waves 4 ft. Showers likely, mainly in
the morning.

$$

ANZ541-092300-
Choptank River to Cambridge MD and the Little Choptank River-
433 AM EDT Thu Oct 9 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 PM EDT THIS AFTERNOON...

.REST OF THE OVERNIGHT...N winds 20 kt with gusts to 25 kt. Waves
2 ft.
.TODAY...NE winds 15 to 20 kt with gusts to 25 kt... diminishing to
10 kt late. Waves 1 to 2 ft.
.TONIGHT...NE winds 5 to 10 kt. Waves 1 ft.
.FRI...E winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...E winds 5 to 10 kt. Waves 1 ft.
.SAT...E winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. A chance
of showers.
.SAT NIGHT...NE winds 20 to 25 kt. Waves 2 ft. Showers likely.
.SUN...NE winds 25 to 30 kt...becoming N 20 to 25 kt after midnight.
Waves 3 ft. Showers likely.
.MON...N winds 20 to 25 kt. Waves 3 ft. Showers likely, mainly in
the morning.

$$

ANZ542-092300-
Patuxent River to Broomes Island MD-
433 AM EDT Thu Oct 9 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 PM EDT THIS AFTERNOON...

.REST OF THE OVERNIGHT...N winds 15 kt with gusts to 25 kt. Waves
1 ft.
.TODAY...NE winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.TONIGHT...NE winds 5 to 10 kt. Waves 1 ft.
.FRI...E winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...E winds 5 to 10 kt. Waves 1 ft.
.SAT...E winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. A chance
of showers.
.SAT NIGHT...NE winds 10 to 15 kt with gusts to 25 kt. Waves 1 ft.
Showers likely.
.SUN...NE winds 20 to 25 kt...becoming N 15 to 20 kt after midnight.
Waves 1 to 2 ft. Showers likely.
.MON...N winds 20 to 25 kt. Waves 1 to 2 ft. A chance of showers.

$$

ANZ534-092300-
Chesapeake Bay from Drum Point to Smith Point-
433 AM EDT Thu Oct 9 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 PM EDT THIS AFTERNOON...

.REST OF THE OVERNIGHT...N winds 25 kt with gusts to 30 kt. Waves
4 ft.
.TODAY...NE winds 15 to 20 kt. Gusts up to 30 kt early in the
morning. Waves 4 ft...subsiding to 2 ft in the afternoon.
.TONIGHT...NE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.FRI...E winds 10 to 15 kt. Waves 2 ft.
.FRI NIGHT...E winds 10 kt. Waves 1 ft.
.SAT...E winds 15 to 20 kt. Waves 2 to 3 ft. A chance of showers.
.SAT NIGHT...NE winds 20 to 25 kt with gusts to 30 kt. Waves 3 ft.
Showers likely.
.SUN...NE winds 25 to 35 kt...becoming N 25 to 30 kt after midnight.
Waves 5 ft...building to 6 ft. Showers likely.
.MON...N winds 25 to 30 kt. Waves 5 ft. Showers likely, mainly in
the morning.

$$

ANZ543-092300-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
433 AM EDT Thu Oct 9 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 PM EDT THIS AFTERNOON...

.REST OF THE OVERNIGHT...N winds 20 kt with gusts to 30 kt. Waves
2 ft.
.TODAY...NE winds 15 to 20 kt. Gusts up to 25 kt until late
afternoon. Waves 2 ft.
.TONIGHT...NE winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.FRI...E winds 10 to 15 kt. Waves 1 ft.
.FRI NIGHT...E winds 5 to 10 kt. Waves 1 ft.
.SAT...E winds 15 to 20 kt. Waves 1 to 2 ft. A chance of showers.
.SAT NIGHT...NE winds 20 to 25 kt with gusts to 30 kt. Waves 2 to
3 ft. Showers likely.
.SUN...NE winds 25 to 30 kt...becoming N after midnight. Waves 3 ft.
Showers likely.
.MON...N winds 25 to 30 kt. Waves 3 ft. A chance of showers.

$$