371
FZUS51 KLWX 110858
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
358 AM EST Thu Dec 11 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.

ANZ500-112300-
358 AM EST Thu Dec 11 2025

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

A cold front associated with a quick moving clipper system tracks
through early this morning. Weak high pressure will return for
Thursday night before the next frontal system passes by to the south
 on Friday. Another area of low pressure may impact the region over
the weekend before Arctic high pressure moves in by early next week.
 Small Craft Advisories may be needed late tonight, while becoming
more likely on Sunday into Monday. Gale conditions are possible
Sunday afternoon through Monday morning.

$$

ANZ535-112300-
Tidal Potomac from Key Bridge to Indian Head-
358 AM EST Thu Dec 11 2025

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

.REST OF THE OVERNIGHT...NW winds 10 kt with gusts to 20 kt. Waves
1 ft.
.TODAY...NW winds 10 to 15 kt with gusts to 25 kt. Waves 1 ft.
.TONIGHT...W winds 5 to 10 kt. Waves 1 ft.
.FRI...W winds around 5 kt. Waves 1 ft.
.FRI NIGHT...SW winds around 5 kt. Waves 1 ft or less. A chance of
snow.
.SAT...SW winds around 5 kt. Waves 1 ft.
.SAT NIGHT...NW winds 5 to 10 kt. Waves 1 ft. Snow likely.
.SUN...NW winds 10 to 15 kt. Waves 1 to 2 ft. A chance of snow in
the morning.
.MON...W winds 5 to 10 kt. Waves 1 ft.

$$

ANZ536-112300-
Tidal Potomac from Indian Head to Cobb Island-
358 AM EST Thu Dec 11 2025

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

.REST OF THE OVERNIGHT...NW winds 15 kt with gusts to 25 kt. Waves
2 ft.
.TODAY...NW winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft.
.TONIGHT...W winds 5 to 10 kt. Waves 1 ft.
.FRI...SW winds around 5 kt. Waves 1 ft. A chance of snow.
.FRI NIGHT...SW winds around 5 kt. Waves 1 ft.
.SAT...SW winds 5 kt. Waves less than 1 ft.
.SAT NIGHT...NW winds 5 to 10 kt. Waves 1 ft. Snow likely.
.SUN...NW winds 15 to 20 kt. Waves 2 to 3 ft. A chance of snow in
the morning.
.MON...NW winds 10 to 15 kt...becoming SW 5 to 10 kt. Waves 1 ft.

$$

ANZ537-112300-
Tidal Potomac from Cobb Island to Smith Point-
358 AM EST Thu Dec 11 2025

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

.REST OF THE OVERNIGHT...NW winds 20 kt with gusts to 30 kt. Waves
3 ft.
.TODAY...NW winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft.
.TONIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the evening.
Waves 1 to 2 ft.
.FRI...W winds around 5 kt. Waves 1 ft or less.
.FRI NIGHT...SW winds around 5 kt. Waves flat.
.SAT...SW winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...W winds 5 to 10 kt. Waves 1 ft. A chance of rain and
snow.
.SUN...NW winds 20 to 25 kt. Waves 3 ft. Snow likely in the morning.
.MON...NW winds 15 to 20 kt...becoming SW 10 to 15 kt. Waves 2 to
3 ft...subsiding to 1 ft.

$$

ANZ530-112300-
Chesapeake Bay north of Pooles Island-
358 AM EST Thu Dec 11 2025

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

.REST OF THE OVERNIGHT...NW winds 15 kt with gusts to 30 kt. Waves
2 ft.
.TODAY...W winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.TONIGHT...W winds 10 to 15 kt. Gusts up to 25 kt in the evening.
Waves 1 to 2 ft.
.FRI...W winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...SW winds around 5 kt. Waves 1 ft or less. A chance of
snow.
.SAT...SW winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...W winds 5 to 10 kt. Waves 1 ft. Snow with a chance of
rain.
.SUN...NW winds 15 to 20 kt. Waves 2 ft. A chance of snow in the
morning.
.MON...NW winds 15 to 20 kt...becoming W 5 to 10 kt. Waves 1 to
2 ft.

$$

ANZ531-112300-
Chesapeake Bay from Pooles Island to Sandy Point-
358 AM EST Thu Dec 11 2025

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

.REST OF THE OVERNIGHT...NW winds 20 kt with gusts to 30 kt. Waves
3 ft.
.TODAY...NW winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft.
.TONIGHT...W winds 15 to 20 kt with gusts to 25 kt... diminishing to
10 kt late. Waves 2 to 3 ft.
.FRI...W winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...SW winds around 5 kt. Waves flat. A chance of snow.
.SAT...SW winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...NW winds 5 to 10 kt. Waves 1 ft. Snow with a chance of
rain.
.SUN...NW winds 20 to 25 kt. Waves 2 to 3 ft. A chance of snow in
the morning.
.MON...NW winds 15 to 20 kt...becoming W 10 kt. Waves 2 to 3 ft...
subsiding to 1 ft.

$$

ANZ538-112300-
Patapsco River including Baltimore Harbor-
358 AM EST Thu Dec 11 2025

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

.REST OF THE OVERNIGHT...NW winds 15 kt with gusts to 25 kt. Waves
2 ft.
.TODAY...W winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft.
.TONIGHT...W winds 10 to 15 kt. Gusts up to 25 kt. Waves 1 ft.
.FRI...W winds 5 kt. Waves less than 1 ft.
.FRI NIGHT...W winds around 5 kt. Waves flat. A chance of snow.
.SAT...SW winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...NW winds 5 to 10 kt. Waves 1 ft. Snow with a chance of
rain.
.SUN...NW winds 10 to 15 kt. Waves 1 to 2 ft. A chance of snow in
the morning.
.MON...NW winds 10 to 15 kt...becoming W 5 to 10 kt. Waves 1 ft.

$$

ANZ539-112300-
Chester River to Queenstown MD-
358 AM EST Thu Dec 11 2025

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

.REST OF THE OVERNIGHT...NW winds 20 kt with gusts to 30 kt. Waves
3 ft.
.TODAY...NW winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.
.TONIGHT...W winds 15 to 20 kt with gusts to 25 kt... diminishing to
10 kt late. Waves 2 to 3 ft.
.FRI...W winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...SW winds around 5 kt. Waves flat. A chance of snow.
.SAT...SW winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...NW winds 5 to 10 kt. Waves 1 ft. Snow likely.
.SUN...NW winds 20 to 25 kt. Waves 2 to 3 ft. A chance of snow in
the morning.
.MON...NW winds 15 to 20 kt...becoming W 5 to 10 kt. Waves 2 to
3 ft...subsiding to 1 ft.

$$

ANZ532-112300-
Chesapeake Bay from Sandy Point to North Beach-
358 AM EST Thu Dec 11 2025

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

.REST OF THE OVERNIGHT...NW winds 20 kt with gusts to 30 kt. Waves
3 ft.
.TODAY...NW winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft.
.TONIGHT...W winds 10 to 15 kt. Gusts up to 25 kt early in the
evening. Waves 3 ft...subsiding to 1 ft after midnight.
.FRI...W winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...SW winds around 5 kt. Waves 1 ft or less. A chance of
snow.
.SAT...SW winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...NW winds 10 to 15 kt. Waves 1 ft. Snow likely.
.SUN...NW winds 25 to 30 kt. Waves 3 ft. Snow likely in the morning.
.MON...NW winds 15 to 20 kt...becoming W 10 kt. Waves 2 to 3 ft...
subsiding to 1 ft.

$$

ANZ540-112300-
Eastern Bay-
358 AM EST Thu Dec 11 2025

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

.REST OF THE OVERNIGHT...NW winds 20 kt with gusts to 30 kt. Waves
2 ft.
.TODAY...NW winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.TONIGHT...W winds 10 to 15 kt. Gusts up to 25 kt in the evening.
Waves 1 to 2 ft.
.FRI...W winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...SW winds around 5 kt. Waves flat.
.SAT...SW winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...NW winds 5 to 10 kt. Waves 1 ft. Snow likely.
.SUN...NW winds 20 to 25 kt. Waves 2 to 3 ft. Snow likely in the
morning.
.MON...NW winds 15 to 20 kt...becoming W 10 kt. Waves 1 to 2 ft.

$$

ANZ533-112300-
Chesapeake Bay from North Beach to Drum Point-
358 AM EST Thu Dec 11 2025

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

.REST OF THE OVERNIGHT...NW winds 25 kt with gusts to 30 kt. Waves
4 ft.
.TODAY...NW winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft.
.TONIGHT...W winds 10 to 15 kt. Gusts up to 25 kt early in the
evening. Waves 2 to 3 ft.
.FRI...W winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...SW winds 5 kt. Waves less than 1 ft.
.SAT...SW winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...NW winds 10 to 15 kt. Waves 1 to 2 ft. Snow likely.
.SUN...NW winds 15 to 20 kt...increasing to 25 to 30 kt. Waves
3 ft...building to 4 ft. Snow likely in the morning.
.MON...NW winds 15 to 20 kt...becoming W 10 to 15 kt. Waves 4 ft...
subsiding to 1 to 2 ft.

$$

ANZ541-112300-
Choptank River to Cambridge MD and the Little Choptank River-
358 AM EST Thu Dec 11 2025

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

.REST OF THE OVERNIGHT...NW winds 20 kt with gusts to 30 kt. Waves
3 ft.
.TODAY...NW winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft.
.TONIGHT...NW winds 15 to 20 kt with gusts to 25 kt... diminishing
to 10 kt late. Waves 2 to 3 ft.
.FRI...W winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...SW winds around 5 kt. Waves 1 ft or less.
.SAT...SW winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...NW winds 10 to 15 kt. Waves 1 ft. Snow likely.
.SUN...NW winds 25 to 30 kt. Waves 2 to 3 ft. Snow likely in the
morning.
.MON...NW winds 15 to 20 kt...becoming W 10 to 15 kt. Waves 2 to
3 ft...subsiding to 1 ft.

$$

ANZ542-112300-
Patuxent River to Broomes Island MD-
358 AM EST Thu Dec 11 2025

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

.REST OF THE OVERNIGHT...NW winds 15 kt with gusts to 30 kt. Waves
1 ft.
.TODAY...NW winds 10 to 15 kt with gusts to 25 kt. Waves 1 ft.
.TONIGHT...W winds 5 to 10 kt. Gusts up to 20 kt early in the
evening. Waves 1 ft.
.FRI...W winds 5 kt. Waves less than 1 ft.
.FRI NIGHT...SW winds around 5 kt. Waves 1 ft.
.SAT...SW winds 5 kt. Waves less than 1 ft.
.SAT NIGHT...W winds 5 to 10 kt. Waves 1 ft. Snow likely.
.SUN...NW winds 15 to 20 kt. Waves 1 to 2 ft. Snow likely in the
morning.
.MON...NW winds 10 to 15 kt...becoming W 5 to 10 kt. Waves 1 ft.

$$

ANZ534-112300-
Chesapeake Bay from Drum Point to Smith Point-
358 AM EST Thu Dec 11 2025

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

.REST OF THE OVERNIGHT...NW winds 25 kt with gusts to 30 kt. Waves
4 ft.
.TODAY...NW winds 20 to 25 kt with gusts to 30 kt. Waves 4 ft.
.TONIGHT...NW winds 10 to 15 kt. Gusts up to 25 kt early in the
evening. Waves 2 to 3 ft.
.FRI...W winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...W winds 5 to 10 kt. Waves 1 ft or less.
.SAT...SW winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...W winds 10 to 15 kt. Waves 1 to 2 ft. Snow likely with
a chance of rain.
.SUN...NW winds 25 to 30 kt. Waves 4 ft...building to 6 ft. Snow
likely in the morning.
.MON...NW winds 20 to 25 kt...diminishing to 10 to 15 kt in the
afternoon, then becoming W. Waves 5 ft... subsiding to 2 to 3 ft.

$$

ANZ543-112300-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
358 AM EST Thu Dec 11 2025

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

.REST OF THE OVERNIGHT...NW winds 25 kt with gusts to 30 kt. Waves
3 ft.
.TODAY...NW winds 20 to 25 kt with gusts to 30 kt. Waves 2 ft.
.TONIGHT...NW winds 10 to 15 kt. Gusts up to 25 kt in the evening.
Waves 1 to 2 ft.
.FRI...W winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...W winds 5 kt. Waves less than 1 ft.
.SAT...SW winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...W winds 10 to 15 kt. Waves 1 ft. A chance of rain and
snow.
.SUN...NW winds 25 to 30 kt. Waves 2 to 3 ft. Snow likely in the
morning.
.MON...NW winds 20 to 25 kt...diminishing to 10 to 15 kt in the
afternoon, then becoming W. Waves 2 to 3 ft... subsiding to 1 ft.

$$