899
FZUS51 KLWX 040907
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
407 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.

ANZ500-042215-
407 AM EST Thu Dec 4 2025

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

High pressure will remain nearby early this morning. A reinforcing
cold front will cross the Mid-Atlantic this afternoon. 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. High
pressure briefly builds over the area this weekend. A couple of
clipper-like systems may affect the area heading into early next
week. Small Craft Advisories will likely be needed on Monday.

$$

ANZ535-042215-
Tidal Potomac from Key Bridge to Indian Head-
407 AM EST Thu Dec 4 2025

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

.REST OF THE OVERNIGHT...W winds 5 kt. Waves less than 1 ft.
.TODAY...NW winds 5 to 10 kt. Gusts up to 20 kt in the late morning
and afternoon. Waves 1 ft.
.TONIGHT...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.

$$

ANZ536-042215-
Tidal Potomac from Indian Head to Cobb Island-
407 AM EST Thu Dec 4 2025

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

.REST OF THE OVERNIGHT...W winds 5 kt. Waves less than 1 ft.
.TODAY...NW winds 5 to 10 kt. Gusts up to 20 kt in the late morning
and afternoon. Waves 1 ft.
.TONIGHT...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.

$$

ANZ537-042215-
Tidal Potomac from Cobb Island to Smith Point-
407 AM EST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM NOON EST TODAY THROUGH LATE
TONIGHT...

.REST OF THE OVERNIGHT...SW winds 10 kt. Waves 1 ft.
.TODAY...NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.TONIGHT...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.

$$

ANZ530-042215-
Chesapeake Bay north of Pooles Island-
407 AM EST Thu Dec 4 2025

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

.REST OF THE OVERNIGHT...W winds 5 kt. Waves less than 1 ft.
.TODAY...NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.TONIGHT...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 flat. 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 flat.
.SAT NIGHT...NW winds around 5 kt. Waves flat.
.SUN...N winds 10 to 15 kt. Waves 1 ft or less.
.MON...N winds 10 to 15 kt...diminishing to 5 kt after midnight.
Waves 1 ft.

$$

ANZ531-042215-
Chesapeake Bay from Pooles Island to Sandy Point-
407 AM EST Thu Dec 4 2025

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

.REST OF THE OVERNIGHT...W winds 10 kt. Waves 1 ft.
.TODAY...NW winds 15 to 20 kt. Waves 2 ft.
.TONIGHT...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.

$$

ANZ538-042215-
Patapsco River including Baltimore Harbor-
407 AM EST Thu Dec 4 2025

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

.REST OF THE OVERNIGHT...W winds 5 kt. Waves less than 1 ft.
.TODAY...NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.TONIGHT...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.

$$

ANZ539-042215-
Chester River to Queenstown MD-
407 AM EST Thu Dec 4 2025

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

.REST OF THE OVERNIGHT...W winds 5 kt. Waves less than 1 ft.
.TODAY...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.
.TONIGHT...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.

$$

ANZ532-042215-
Chesapeake Bay from Sandy Point to North Beach-
407 AM EST Thu Dec 4 2025

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

.REST OF THE OVERNIGHT...W winds 10 kt. Waves 1 ft.
.TODAY...NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.TONIGHT...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 ft...building to 3 ft after midnight.
.MON...N winds 20 to 25 kt...diminishing to 10 to 15 kt. Waves 2 to
3 ft...subsiding to 1 ft after midnight.

$$

ANZ540-042215-
Eastern Bay-
407 AM EST Thu Dec 4 2025

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

.REST OF THE OVERNIGHT...W winds 10 kt. Waves 1 ft.
.TODAY...NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.TONIGHT...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.

$$

ANZ533-042215-
Chesapeake Bay from North Beach to Drum Point-
407 AM EST Thu Dec 4 2025

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

.REST OF THE OVERNIGHT...SW winds 10 kt. Waves 1 ft.
.TODAY...NW winds 15 to 20 kt with gusts to 25 kt. Waves 2 to 3 ft.
.TONIGHT...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.

$$

ANZ541-042215-
Choptank River to Cambridge MD and the Little Choptank River-
407 AM EST Thu Dec 4 2025

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

.REST OF THE OVERNIGHT...W winds 10 kt. Waves 1 ft.
.TODAY...NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.TONIGHT...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.

$$

ANZ542-042215-
Patuxent River to Broomes Island MD-
407 AM EST Thu Dec 4 2025

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

.REST OF THE OVERNIGHT...SW winds 5 kt. Waves less than 1 ft.
.TODAY...NW winds 5 to 10 kt. Gusts up to 20 kt in the late morning
and afternoon. Waves 1 ft.
.TONIGHT...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.

$$

ANZ534-042215-
Chesapeake Bay from Drum Point to Smith Point-
407 AM EST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM NOON EST TODAY THROUGH LATE
TONIGHT...

.REST OF THE OVERNIGHT...SW winds 10 kt. Waves 2 ft.
.TODAY...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.
.TONIGHT...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.

$$

ANZ543-042215-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
407 AM EST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM NOON EST TODAY THROUGH LATE
TONIGHT...

.REST OF THE OVERNIGHT...SW winds 10 kt. Waves 1 ft.
.TODAY...NW winds 10 to 15 kt. Gusts up to 20 kt. Waves 1 to 2 ft.
.TONIGHT...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.

$$