956
FZUS51 KLWX 040558
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
1257 AM EST Thu Dec 4 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.

ANZ500-042100-
1257 AM EST Thu Dec 4 2025

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

High pressure will remain nearby through tonight. A reinforcing cold
 front will cross the Mid-Atlantic Thursday afternoon and evening.
Low pressure will likely track offshore of the Carolinas into the
Atlantic Ocean Friday into Saturday, but there is considerable
uncertainty as to how far north the low and its associated
precipitation gets. A couple of clipper-like systems may affect the
area heading into early next week.

$$

ANZ535-042100-
Tidal Potomac from Key Bridge to Indian Head-
1257 AM EST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 9 AM EST THIS MORNING THROUGH
THIS EVENING...

.OVERNIGHT...SW winds 5 kt. Waves less than 1 ft.
.THU...NW winds 5 to 10 kt. Gusts up to 20 kt in the late morning
and afternoon. Waves 1 ft.
.THU NIGHT...N winds 5 to 10 kt. Waves 1 ft.
.FRI...SE winds around 5 kt. Waves 1 ft. Snow likely.
.FRI NIGHT...Light winds. Waves flat.
.SAT...Light winds. Waves 1 ft or less.
.SAT NIGHT...NW winds around 5 kt. Waves 1 ft or less.
.SUN...N winds 5 to 10 kt. Waves 1 ft.
.MON...N winds 5 to 10 kt. Waves 1 ft.

$$

ANZ536-042100-
Tidal Potomac from Indian Head to Cobb Island-
1257 AM EST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM NOON EST TODAY THROUGH THIS
EVENING...

.OVERNIGHT...SW winds 5 to 10 kt. Waves 1 ft.
.THU...NW winds 5 to 10 kt. Gusts up to 20 kt in the late morning
and afternoon. Waves 1 ft.
.THU NIGHT...N winds 5 to 10 kt. Waves 1 ft.
.FRI...E winds around 5 kt. Waves 1 ft. Snow likely.
.FRI NIGHT...N winds around 5 kt. Waves 1 ft.
.SAT...SW winds around 5 kt. Waves 1 ft or less.
.SAT NIGHT...NW winds around 5 kt. Waves 1 ft.
.SUN...N winds 10 to 15 kt. Waves 1 ft.
.MON...N winds 10 to 15 kt...diminishing to 5 kt after midnight.
Waves 1 ft.

$$

ANZ537-042100-
Tidal Potomac from Cobb Island to Smith Point-
1257 AM EST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM NOON EST TODAY THROUGH THIS
EVENING...

.OVERNIGHT...SW winds 10 kt. Waves 1 ft.
.THU...NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.THU NIGHT...N winds 10 to 15 kt...becoming NE late. Gusts up to
20 kt. Waves 2 ft.
.FRI...NE winds 5 to 10 kt. Waves 1 ft. Snow and rain.
.FRI NIGHT...N winds 5 kt. Waves less than 1 ft. A chance of rain.
.SAT...W winds around 5 kt. Waves 1 ft or less.
.SAT NIGHT...NW winds around 5 kt. Waves 1 ft or less.
.SUN...N winds 5 to 10 kt...increasing to 15 to 20 kt after
midnight. Waves 1 to 2 ft.
.MON...N winds 15 to 20 kt...diminishing to 5 to 10 kt after
midnight. Waves 2 to 3 ft.

$$

ANZ530-042100-
Chesapeake Bay north of Pooles Island-
1257 AM EST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 9 AM EST THIS MORNING THROUGH
THIS EVENING...

.OVERNIGHT...W winds 10 kt. Waves 1 ft.
.THU...NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.THU NIGHT...N winds 10 to 15 kt with gusts to 20 kt...becoming NE
5 to 10 kt late. Waves 1 ft.
.FRI...SE winds around 5 kt. Waves 1 ft. A chance of snow.
.FRI NIGHT...N winds around 5 kt. Waves flat. A chance of snow and
rain.
.SAT...W winds around 5 kt. Waves 1 ft.
.SAT NIGHT...NW winds around 5 kt. Waves 1 ft.
.SUN...N winds 10 to 15 kt. Waves 1 ft.
.MON...N winds 10 to 15 kt...diminishing to 5 kt after midnight.
Waves 1 ft.

$$

ANZ531-042100-
Chesapeake Bay from Pooles Island to Sandy Point-
1257 AM EST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 9 AM EST THIS MORNING THROUGH
THIS EVENING...

.OVERNIGHT...W winds 10 kt. Waves 1 ft.
.THU...NW winds 15 to 20 kt. Waves 2 ft.
.THU NIGHT...N winds 10 to 15 kt with gusts to 20 kt...becoming NE
5 to 10 kt late. Waves 1 to 2 ft.
.FRI...SE winds 5 to 10 kt. Waves 1 ft. Snow likely.
.FRI NIGHT...N winds around 5 kt. Waves flat. A chance of rain and
snow.
.SAT...W winds around 5 kt. Waves flat.
.SAT NIGHT...NW winds around 5 kt. Waves 1 ft or less.
.SUN...N winds 5 to 10 kt...increasing to 15 to 20 kt after
midnight. Waves 1 to 2 ft.
.MON...N winds 15 to 20 kt...becoming NE 5 to 10 kt after midnight.
Waves 1 to 2 ft.

$$

ANZ538-042100-
Patapsco River including Baltimore Harbor-
1257 AM EST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 9 AM EST THIS MORNING THROUGH
THIS EVENING...

.OVERNIGHT...W winds 5 kt. Waves less than 1 ft.
.THU...NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.THU NIGHT...N winds 10 to 15 kt with gusts to 20 kt...becoming NE
5 kt after midnight. Waves 1 ft.
.FRI...SE winds 5 kt. Waves flat. Snow likely.
.FRI NIGHT...N winds around 5 kt. Waves flat.
.SAT...W winds around 5 kt. Waves flat.
.SAT NIGHT...NW winds around 5 kt. Waves flat.
.SUN...N winds around 5 kt...increasing to 10 to 15 kt after
midnight. Waves 1 ft or less.
.MON...N winds 10 to 15 kt...diminishing to 5 kt after midnight.
Waves 1 ft or less.

$$

ANZ539-042100-
Chester River to Queenstown MD-
1257 AM EST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 9 AM EST THIS MORNING THROUGH
THIS EVENING...

.OVERNIGHT...W winds 5 to 10 kt. Waves 1 ft.
.THU...NW winds 5 to 10 kt with gusts to 20 kt... increasing to
15 kt with gusts to 20 kt in the afternoon. Waves 2 ft.
.THU NIGHT...N winds 10 to 15 kt with gusts to 20 kt...becoming NE
5 to 10 kt after midnight. Waves 1 to 2 ft.
.FRI...E winds 5 kt. Waves less than 1 ft. Snow likely.
.FRI NIGHT...N winds 5 kt. Waves flat. A chance of rain and snow.
.SAT...W winds 5 kt. Waves flat.
.SAT NIGHT...NW winds around 5 kt. Waves flat.
.SUN...N winds 10 to 15 kt. Waves 1 ft or less...building to 2 ft
after midnight.
.MON...N winds 10 to 15 kt...becoming NE 5 kt after midnight. Waves
1 to 2 ft.

$$

ANZ532-042100-
Chesapeake Bay from Sandy Point to North Beach-
1257 AM EST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 9 AM EST THIS MORNING THROUGH
THIS EVENING...

.OVERNIGHT...SW winds 10 kt. Waves 1 ft.
.THU...NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.THU NIGHT...N winds 10 to 15 kt...becoming NE late. Gusts up to
20 kt. Waves 2 ft.
.FRI...E winds 5 to 10 kt. Waves 1 ft. Snow likely.
.FRI NIGHT...N winds 5 kt. Waves flat. A chance of rain and snow.
.SAT...W winds around 5 kt. Waves flat.
.SAT NIGHT...NW winds 5 kt. Waves less than 1 ft.
.SUN...N winds 5 to 10 kt...increasing to 15 to 20 kt after
midnight. Waves 1 to 2 ft.
.MON...N winds 20 to 25 kt...diminishing to 10 to 15 kt. Waves 2 to
3 ft...subsiding to 1 ft after midnight.

$$

ANZ540-042100-
Eastern Bay-
1257 AM EST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 9 AM EST THIS MORNING THROUGH
THIS EVENING...

.OVERNIGHT...SW winds 10 kt. Waves 1 ft.
.THU...NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.THU NIGHT...N winds 10 to 15 kt with gusts to 20 kt...becoming NE
5 to 10 kt after midnight. Waves 1 to 2 ft.
.FRI...E winds 5 to 10 kt. Waves 1 ft or less. Snow likely.
.FRI NIGHT...N winds around 5 kt. Waves flat. A chance of rain and
snow.
.SAT...W winds around 5 kt. Waves flat.
.SAT NIGHT...NW winds around 5 kt. Waves flat.
.SUN...N winds 5 to 10 kt...increasing to 15 to 20 kt after
midnight. Waves 1 ft or less...building to 2 ft after midnight.
.MON...N winds 15 to 20 kt...becoming NE 5 to 10 kt after midnight.
Waves 1 to 2 ft.

$$

ANZ533-042100-
Chesapeake Bay from North Beach to Drum Point-
1257 AM EST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 9 AM EST THIS MORNING THROUGH
THIS EVENING...

.OVERNIGHT...SW winds 10 kt. Waves 1 ft.
.THU...NW winds 15 to 20 kt with gusts to 25 kt. Waves 2 to 3 ft.
.THU NIGHT...N winds 15 to 20 kt...becoming NE 10 to 15 kt after
midnight. Waves 2 to 3 ft.
.FRI...E winds 5 to 10 kt. Waves 1 ft. Snow likely.
.FRI NIGHT...N winds 5 kt. Waves less than 1 ft. A chance of rain
and snow.
.SAT...W winds 5 kt. Waves flat.
.SAT NIGHT...NW winds 5 to 10 kt. Waves 1 ft or less.
.SUN...N winds 10 to 15 kt...increasing to 20 to 25 kt after
midnight. Waves 1 to 2 ft...building to 3 ft after midnight.
.MON...N winds 20 to 25 kt...becoming NE 5 to 10 kt after midnight.
Waves 3 ft...subsiding to 2 ft after midnight.

$$

ANZ541-042100-
Choptank River to Cambridge MD and the Little Choptank River-
1257 AM EST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 9 AM EST THIS MORNING THROUGH
THIS EVENING...

.OVERNIGHT...SW winds 10 kt. Waves 1 ft.
.THU...NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.THU NIGHT...N winds 15 to 20 kt...becoming NE 10 to 15 kt after
midnight. Waves 1 to 2 ft.
.FRI...E winds 5 to 10 kt. Waves 1 ft. Snow likely.
.FRI NIGHT...N winds 5 kt. Waves flat. A chance of rain and snow.
.SAT...W winds around 5 kt. Waves flat.
.SAT NIGHT...NW winds around 5 kt. Waves 1 ft or less.
.SUN...N winds 5 kt...increasing to 15 to 20 kt. Waves 1 to 2 ft.
.MON...N winds 20 to 25 kt...becoming NE 10 to 15 kt. Waves 1 to
2 ft.

$$

ANZ542-042100-
Patuxent River to Broomes Island MD-
1257 AM EST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM NOON EST TODAY THROUGH THIS
EVENING...

.OVERNIGHT...SW winds 5 kt. Waves less than 1 ft.
.THU...NW winds 5 to 10 kt. Gusts up to 20 kt in the late morning
and afternoon. Waves 1 ft.
.THU NIGHT...N winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
.FRI...NE winds 5 kt. Waves less than 1 ft. Snow.
.FRI NIGHT...N winds around 5 kt. Waves 1 ft. A chance of rain.
.SAT...W winds around 5 kt. Waves 1 ft.
.SAT NIGHT...NW winds around 5 kt. Waves 1 ft.
.SUN...N winds 10 to 15 kt. Waves 1 ft.
.MON...N winds 15 to 20 kt...diminishing to 5 to 10 kt. Waves 1 ft.

$$

ANZ534-042100-
Chesapeake Bay from Drum Point to Smith Point-
1257 AM EST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM NOON EST TODAY THROUGH THIS
EVENING...

.OVERNIGHT...SW winds 10 kt. Waves 1 to 2 ft.
.THU...NW winds 10 to 15 kt...becoming 15 kt late. Gusts up to
20 kt. Waves 1 ft...building to 3 ft in the afternoon.
.THU NIGHT...N winds 15 to 20 kt with gusts to 25 kt...becoming NE
10 to 15 kt late. Waves 3 ft.
.FRI...NE winds 5 to 10 kt. Waves 1 to 2 ft. Snow and rain.
.FRI NIGHT...N winds 5 to 10 kt. Waves 1 ft. A chance of rain.
.SAT...NW winds around 5 kt. Waves 1 ft.
.SAT NIGHT...NW winds 5 to 10 kt. Waves 1 ft or less.
.SUN...N winds 15 to 20 kt. Waves 1 to 2 ft...building to 3 ft after
midnight.
.MON...N winds 20 to 25 kt...diminishing to 10 to 15 kt after
midnight. Waves 3 ft...subsiding to 2 ft after midnight.

$$

ANZ543-042100-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
1257 AM EST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM NOON EST TODAY THROUGH THIS
EVENING...

.OVERNIGHT...SW winds 10 kt. Waves 1 ft.
.THU...NW winds 10 to 15 kt. Gusts up to 20 kt. Waves 1 to 2 ft.
.THU NIGHT...N winds 15 to 20 kt...becoming NE 10 to 15 kt late.
Waves 2 ft.
.FRI...NE winds 5 to 10 kt. Waves 1 ft. Snow and rain.
.FRI NIGHT...N winds 5 to 10 kt. Waves 1 ft. A chance of rain.
.SAT...NW winds 5 kt. Waves less than 1 ft.
.SAT NIGHT...NW winds 5 to 10 kt. Waves 1 ft or less.
.SUN...N winds 15 to 20 kt. Waves 1 to 2 ft.
.MON...N winds 20 to 25 kt...diminishing to 10 to 15 kt after
midnight. Waves 1 to 2 ft.

$$