484
FZUS51 KLWX 092034
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
434 PM EDT Tue Sep 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.

ANZ500-100800-
434 PM EDT Tue Sep 9 2025

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

Canadian high pressure will settle to the north of the area through
the middle of the week as a wave of low pressure passes offshore of
the Carolinas. A cold front will dissipate as it approaches Thursday
 while another area of high pressure builds to the north late in the
 week.

$$

ANZ535-100800-
Tidal Potomac from Key Bridge to Indian Head-
434 PM EDT Tue Sep 9 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY EVENING...

.REST OF THIS AFTERNOON...NE winds 10 kt with gusts to 20 kt. Waves
1 ft.
.TONIGHT...NE winds 5 to 10 kt. Waves 1 ft. A chance of showers.
Vsby 1 to 3 NM.
.WED...N winds 5 kt. Waves less than 1 ft. A chance of showers. Vsby
1 to 3 NM.
.WED NIGHT...N winds around 5 kt. Waves 1 ft.
.THU...N winds around 5 kt. Waves 1 ft.
.THU NIGHT...N winds around 5 kt. Waves 1 ft.
.FRI...NE winds around 5 kt. Waves 1 ft.
.SAT...SE winds around 5 kt. Waves 1 ft.

$$

ANZ536-100800-
Tidal Potomac from Indian Head to Cobb Island-
434 PM EDT Tue Sep 9 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY EVENING...

.REST OF THIS AFTERNOON...NE winds 10 kt with gusts to 20 kt. Waves
1 ft.
.TONIGHT...NE winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. A
chance of showers. Vsby 1 to 3 NM.
.WED...N winds 5 to 10 kt. Waves 1 ft. A chance of showers. Vsby
1 to 3 NM.
.WED NIGHT...N winds 5 kt. Waves less than 1 ft.
.THU...N winds 5 kt. Waves less than 1 ft.
.THU NIGHT...N winds around 5 kt. Waves 1 ft.
.FRI...NE winds 5 kt. Waves less than 1 ft.
.SAT...E winds 5 kt. Waves less than 1 ft.

$$

ANZ537-100800-
Tidal Potomac from Cobb Island to Smith Point-
434 PM EDT Tue Sep 9 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON...

.REST OF THIS AFTERNOON...NE winds 20 kt with gusts to 25 kt. Waves
3 ft.
.TONIGHT...NE winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft. A
chance of showers. Vsby 1 to 3 NM.
.WED...N winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A chance
of showers. Vsby 1 to 3 NM.
.WED NIGHT...N winds 10 to 15 kt. Waves 1 to 2 ft.
.THU...N winds 5 to 10 kt. Waves 1 ft.
.THU NIGHT...NE winds 5 kt. Waves less than 1 ft.
.FRI...NE winds 5 to 10 kt. Waves 1 ft.
.SAT...E winds 5 to 10 kt...becoming SW after midnight. Waves 1 ft.

$$

ANZ530-100800-
Chesapeake Bay north of Pooles Island-
434 PM EDT Tue Sep 9 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON...

.REST OF THIS AFTERNOON...NE winds 10 kt. Waves 1 ft.
.TONIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt. Waves 1 ft.
.WED...N winds 10 to 15 kt. Waves 1 ft.
.WED NIGHT...N winds 5 to 10 kt. Waves 1 ft or less.
.THU...N winds 5 kt. Waves less than 1 ft.
.THU NIGHT...N winds 5 kt. Waves flat.
.FRI...E winds 5 kt. Waves less than 1 ft.
.SAT...SE winds 5 kt. Waves flat.

$$

ANZ531-100800-
Chesapeake Bay from Pooles Island to Sandy Point-
434 PM EDT Tue Sep 9 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON...

.REST OF THIS AFTERNOON...NE winds 10 kt with gusts to 20 kt. Waves
2 ft.
.TONIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt. Waves 2 ft. A
chance of showers.
.WED...N winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A chance
of showers.
.WED NIGHT...N winds 5 to 10 kt. Waves 1 ft.
.THU...N winds 5 to 10 kt. Waves 1 ft.
.THU NIGHT...N winds 5 kt. Waves less than 1 ft.
.FRI...E winds 5 to 10 kt. Waves 1 ft.
.SAT...SE winds 5 to 10 kt...becoming SW after midnight. Waves 1 ft.


$$

ANZ538-100800-
Patapsco River including Baltimore Harbor-
434 PM EDT Tue Sep 9 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON...

.REST OF THIS AFTERNOON...NE winds 10 kt. Waves 1 ft.
.TONIGHT...NE winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.WED...N winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.WED NIGHT...N winds 5 kt. Waves less than 1 ft.
.THU...N winds 5 kt. Waves flat.
.THU NIGHT...N winds around 5 kt. Waves flat.
.FRI...E winds 5 kt. Waves less than 1 ft.
.SAT...SE winds 5 kt. Waves less than 1 ft.

$$

ANZ539-100800-
Chester River to Queenstown MD-
434 PM EDT Tue Sep 9 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON...

.REST OF THIS AFTERNOON...NE winds 10 kt with gusts to 20 kt. Waves
1 ft.
.TONIGHT...NE winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. A
chance of showers.
.WED...N winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft. A
chance of showers.
.WED NIGHT...N winds 5 to 10 kt. Waves 1 ft.
.THU...N winds 5 kt. Waves less than 1 ft.
.THU NIGHT...N winds around 5 kt. Waves 1 ft or less.
.FRI...E winds 5 kt. Waves less than 1 ft.
.SAT...SE winds 5 kt. Waves less than 1 ft.

$$

ANZ532-100800-
Chesapeake Bay from Sandy Point to North Beach-
434 PM EDT Tue Sep 9 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON...

.REST OF THIS AFTERNOON...NE winds 15 kt with gusts to 20 kt. Waves
2 ft.
.TONIGHT...NE winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft. A
chance of showers.
.WED...N winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A chance
of showers.
.WED NIGHT...N winds 5 to 10 kt. Waves 1 ft.
.THU...N winds 5 to 10 kt. Waves 1 ft.
.THU NIGHT...N winds 5 kt. Waves less than 1 ft.
.FRI...E winds 5 to 10 kt. Waves 1 ft.
.SAT...E winds 5 to 10 kt...becoming S. Waves 1 ft.

$$

ANZ540-100800-
Eastern Bay-
434 PM EDT Tue Sep 9 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON...

.REST OF THIS AFTERNOON...NE winds 15 kt with gusts to 20 kt. Waves
1 ft.
.TONIGHT...NE winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. A
chance of showers.
.WED...N winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. A chance
of showers.
.WED NIGHT...N winds 5 to 10 kt. Waves 1 ft.
.THU...N winds 5 to 10 kt. Waves 1 ft.
.THU NIGHT...N winds 5 kt. Waves flat.
.FRI...E winds 5 to 10 kt. Waves 1 ft.
.SAT...NE winds 5 kt...becoming S. Waves 1 ft.

$$

ANZ533-100800-
Chesapeake Bay from North Beach to Drum Point-
434 PM EDT Tue Sep 9 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON...

.REST OF THIS AFTERNOON...NE winds 15 kt with gusts to 20 kt. Waves
2 ft.
.TONIGHT...NE winds 10 to 15 kt with gusts to 20 kt. Waves 2 to
3 ft. A chance of showers.
.WED...N winds 10 to 15 kt with gusts to 20 kt. Waves 2 to 3 ft. A
chance of showers. Vsby 1 NM or less.
.WED NIGHT...N winds 10 to 15 kt. Waves 1 to 2 ft.
.THU...N winds 5 to 10 kt. Waves 1 ft.
.THU NIGHT...N winds 5 kt. Waves less than 1 ft.
.FRI...NE winds 5 to 10 kt. Waves 1 ft.
.SAT...E winds 5 to 10 kt...becoming SW after midnight. Waves 1 ft.

$$

ANZ541-100800-
Choptank River to Cambridge MD and the Little Choptank River-
434 PM EDT Tue Sep 9 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON...

.REST OF THIS AFTERNOON...NE winds 15 kt with gusts to 20 kt. Waves
2 ft.
.TONIGHT...NE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A
chance of showers.
.WED...N winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft. A
chance of showers.
.WED NIGHT...N winds 5 to 10 kt. Waves 1 ft.
.THU...N winds 5 to 10 kt. Waves 1 ft.
.THU NIGHT...NE winds 5 kt. Waves less than 1 ft.
.FRI...NE winds 5 to 10 kt. Waves 1 ft.
.SAT...E winds 5 to 10 kt...becoming S after midnight. Waves 1 ft.

$$

ANZ542-100800-
Patuxent River to Broomes Island MD-
434 PM EDT Tue Sep 9 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON...

.REST OF THIS AFTERNOON...NE winds 10 kt with gusts to 20 kt. Waves
1 ft.
.TONIGHT...NE winds 10 kt with gusts to 20 kt. Waves 1 ft. A chance
of showers. Vsby 1 to 3 NM.
.WED...N winds 10 kt with gusts to 20 kt. Waves 1 ft. A chance of
showers.
.WED NIGHT...N winds 5 to 10 kt. Waves 1 ft.
.THU...N winds 5 to 10 kt. Waves 1 ft.
.THU NIGHT...N winds around 5 kt. Waves 1 ft.
.FRI...NE winds 5 to 10 kt. Waves 1 ft.
.SAT...E winds 5 to 10 kt...becoming SW after midnight. Waves 1 ft.

$$

ANZ534-100800-
Chesapeake Bay from Drum Point to Smith Point-
434 PM EDT Tue Sep 9 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON...

.REST OF THIS AFTERNOON...NE winds 20 kt with gusts to 25 kt. Waves
3 ft.
.TONIGHT...NE winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft. A
chance of showers.
.WED...N winds 15 to 20 kt. Waves 3 ft. A chance of showers and
tstms. Vsby 1 to 3 NM.
.WED NIGHT...N winds 10 to 15 kt. Waves 2 ft.
.THU...N winds 5 to 10 kt. Waves 1 ft.
.THU NIGHT...NE winds 5 to 10 kt. Waves 1 ft.
.FRI...NE winds 10 kt. Waves 1 ft.
.SAT...E winds 10 kt...becoming S after midnight. Waves 1 ft.

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

$$

ANZ543-100800-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
434 PM EDT Tue Sep 9 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON...

.REST OF THIS AFTERNOON...NE winds 15 kt with gusts to 25 kt. Waves
2 ft.
.TONIGHT...NE winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft. A
chance of showers. Vsby 1 to 3 NM.
.WED...N winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A chance
of showers and tstms. Patchy fog. Vsby 1 to 3 NM.
.WED NIGHT...N winds 10 to 15 kt. Waves 1 ft.
.THU...N winds 5 to 10 kt. Waves 1 ft.
.THU NIGHT...NE winds 5 to 10 kt. Waves 1 ft.
.FRI...NE winds 5 to 10 kt. Waves 1 ft.
.SAT...E winds 10 kt...becoming S after midnight. Waves 1 ft.

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

$$