448
FZUS51 KLWX 101758
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
1258 PM EST Wed Dec 10 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.

ANZ500-110900-
1258 PM EST Wed Dec 10 2025

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

A clipper system will move through the area this evening, then a
secondary cold front will cross the waters by early Thursday. Weak
high pressure will return for Thursday night before another cold
front races across the waters on Saturday afternoon. Another area of
 low pressure may impact the region late in the weekend before
Arctic  high pressure moves in by early next week. Small Craft
Advisories  may be needed Thursday night, and again over the
weekend. Gale  conditions are possible on Sunday.

$$

ANZ535-110900-
Tidal Potomac from Key Bridge to Indian Head-
1258 PM EST Wed Dec 10 2025

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

.THIS AFTERNOON...SW winds 15 kt with gusts to 30 kt. Waves 1 to
2 ft. A chance of rain.
.TONIGHT...W winds 10 kt with gusts to 25 kt. Waves 1 ft.
.THU...NW winds 10 to 15 kt with gusts to 25 kt. Waves 1 ft.
.THU NIGHT...W winds 5 to 10 kt. Waves 1 ft.
.FRI...SW winds 5 kt. Waves less than 1 ft. A chance of snow.
.FRI NIGHT...SW winds around 5 kt. Waves 1 ft. A chance of snow.
.SAT...W winds 5 to 10 kt. Waves 1 ft. A chance of snow after
midnight.
.SUN...NW winds 10 to 15 kt. Waves 1 ft.

$$

ANZ536-110900-
Tidal Potomac from Indian Head to Cobb Island-
1258 PM EST Wed Dec 10 2025

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

.THIS AFTERNOON...SW winds 15 kt with gusts to 30 kt. Waves 2 ft. A
slight chance of rain.
.TONIGHT...SW winds 10 to 15 kt...becoming W after midnight. Gusts
up to 25 kt. Waves 2 ft.
.THU...NW winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft.
.THU NIGHT...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...W winds 5 to 10 kt...becoming N after midnight. Waves 1 ft. A
chance of snow after midnight.
.SUN...NW winds 10 to 15 kt. Waves 1 to 2 ft. A chance of snow in
the morning.

$$

ANZ537-110900-
Tidal Potomac from Cobb Island to Smith Point-
1258 PM EST Wed Dec 10 2025

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

.THIS AFTERNOON...SW winds 20 kt with gusts to 30 kt. Waves 3 ft. A
slight chance of rain.
.TONIGHT...SW winds 15 to 20 kt...becoming NW late. Gusts up to
30 kt. Waves 3 ft.
.THU...NW winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft.
.THU NIGHT...W winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft.
.FRI...W winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...SW winds 5 kt. Waves less than 1 ft.
.SAT...W winds 5 to 10 kt. Waves 1 ft. A chance of snow after
midnight.
.SUN...NW winds 15 to 20 kt. Waves 2 to 3 ft. A chance of snow in
the morning.

$$

ANZ530-110900-
Chesapeake Bay north of Pooles Island-
1258 PM EST Wed Dec 10 2025

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

.THIS AFTERNOON...SW winds 15 kt with gusts to 30 kt. Waves 2 ft. A
chance of rain.
.TONIGHT...SW winds 10 to 15 kt...becoming W 15 to 20 kt after
midnight. Gusts up to 25 kt...increasing to 30 kt late. Waves 2 ft.
A chance of rain.
.THU...W winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.THU NIGHT...W winds 10 to 15 kt with gusts to 25 kt. 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. A chance of snow.
.SAT...W winds 5 to 10 kt. Waves 1 ft. A chance of snow after
midnight.
.SUN...NW winds 15 to 20 kt. Waves 1 to 2 ft. A chance of snow in
the morning.

$$

ANZ531-110900-
Chesapeake Bay from Pooles Island to Sandy Point-
1258 PM EST Wed Dec 10 2025

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

.THIS AFTERNOON...S winds 20 kt with gusts to 30 kt. Waves 3 ft. A
chance of rain.
.TONIGHT...SW winds 15 kt...becoming W after midnight. Gusts up to
25 kt...increasing to 30 kt after midnight. Waves 3 ft. A chance of
rain.
.THU...NW winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft.
.THU NIGHT...W winds 15 to 20 kt with gusts to 25 kt. 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. A chance of snow.
.SAT...W winds 5 to 10 kt. Waves 1 ft. A chance of snow after
midnight.
.SUN...NW winds 15 to 20 kt. Waves 2 to 3 ft. A chance of snow in
the morning.

$$

ANZ538-110900-
Patapsco River including Baltimore Harbor-
1258 PM EST Wed Dec 10 2025

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

.THIS AFTERNOON...SW winds 15 kt with gusts to 25 kt. Waves 2 ft. A
chance of rain.
.TONIGHT...SW winds 10 to 15 kt...becoming NW late. Gusts up to
25 kt. Waves 1 to 2 ft. A chance of rain.
.THU...W winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft.
.THU NIGHT...W winds 10 to 15 kt. Gusts up to 25 kt in the evening.
Waves 1 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...W winds 5 to 10 kt. Waves 1 ft. A chance of snow after
midnight.
.SUN...NW winds 10 to 15 kt. Waves 1 ft. A chance of snow in the
morning.

$$

ANZ539-110900-
Chester River to Queenstown MD-
1258 PM EST Wed Dec 10 2025

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

.THIS AFTERNOON...S winds 15 to 20 kt with gusts to 30 kt. Waves
3 ft. A chance of rain.
.TONIGHT...SW winds 15 kt...becoming W after midnight. Gusts up to
25 kt...increasing to 30 kt late. Waves 2 to 3 ft. A chance of rain.
.THU...NW winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.
.THU NIGHT...W winds 15 to 20 kt with gusts to 25 kt. Waves 2 to
3 ft.
.FRI...W winds 5 to 10 kt. Waves 1 to 2 ft.
.FRI NIGHT...SW winds 5 kt. Waves less than 1 ft. A chance of snow.
.SAT...W winds 5 to 10 kt. Waves 1 ft. A chance of snow after
midnight.
.SUN...NW winds 15 to 20 kt. Waves 2 to 3 ft. A chance of snow in
the morning.

$$

ANZ532-110900-
Chesapeake Bay from Sandy Point to North Beach-
1258 PM EST Wed Dec 10 2025

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

.THIS AFTERNOON...S winds 20 kt with gusts to 30 kt. Waves 4 ft. A
chance of rain.
.TONIGHT...SW winds 15 to 20 kt...becoming W after midnight. Gusts
up to 30 kt. Waves 3 ft.
.THU...NW winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft.
.THU NIGHT...W winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft.
.FRI...W winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...SW winds 5 to 10 kt. Waves 1 ft. A chance of snow.
.SAT...W winds 10 to 15 kt. Waves 1 ft. A chance of snow after
midnight.
.SUN...NW winds 20 to 25 kt. Waves 2 to 3 ft. A chance of snow in
the morning.

$$

ANZ540-110900-
Eastern Bay-
1258 PM EST Wed Dec 10 2025

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

.THIS AFTERNOON...S winds 20 kt with gusts to 30 kt. Waves 3 ft. A
chance of rain.
.TONIGHT...SW winds 15 to 20 kt...becoming W after midnight. Gusts
up to 30 kt. Waves 2 to 3 ft.
.THU...NW winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.THU NIGHT...W winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft.
.FRI...W winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...SW winds 5 kt. Waves less than 1 ft. A chance of snow.
.SAT...W winds 5 to 10 kt. Waves 1 ft. A chance of snow after
midnight.
.SUN...NW winds 15 to 20 kt. Waves 2 ft. A chance of snow in the
morning.

$$

ANZ533-110900-
Chesapeake Bay from North Beach to Drum Point-
1258 PM EST Wed Dec 10 2025

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

.THIS AFTERNOON...SW winds 20 kt with gusts to 30 kt. Waves 4 ft. A
chance of rain.
.TONIGHT...SW winds 15 to 20 kt...becoming NW late. Gusts up to
30 kt. Waves 4 ft.
.THU...NW winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft.
.THU NIGHT...W winds 10 to 15 kt with gusts to 25 kt. Waves 2 to
3 ft.
.FRI...W winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...SW winds 5 to 10 kt. Waves 1 ft. A chance of snow.
.SAT...W winds 10 to 15 kt. Waves 1 to 2 ft. A chance of snow after
midnight.
.SUN...NW winds 20 to 25 kt. Waves 2 to 3 ft. A chance of snow in
the morning.

$$

ANZ541-110900-
Choptank River to Cambridge MD and the Little Choptank River-
1258 PM EST Wed Dec 10 2025

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

.THIS AFTERNOON...SW winds 20 to 25 kt with gusts to 30 kt. Waves
3 ft. A chance of rain.
.TONIGHT...SW winds 15 to 20 kt...becoming NW late. Gusts up to
30 kt. Waves 3 ft.
.THU...NW winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft.
.THU NIGHT...W winds 15 to 20 kt with gusts to 25 kt. Waves 2 to
3 ft.
.FRI...W winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...SW winds 5 to 10 kt. Waves 1 ft. A chance of snow.
.SAT...W winds 10 to 15 kt. Waves 1 ft. A chance of snow after
midnight.
.SUN...NW winds 20 to 25 kt. Waves 2 to 3 ft. A chance of snow in
the morning.

$$

ANZ542-110900-
Patuxent River to Broomes Island MD-
1258 PM EST Wed Dec 10 2025

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

.THIS AFTERNOON...SW winds 15 kt with gusts to 30 kt. Waves 1 ft. A
chance of rain.
.TONIGHT...SW winds 10 to 15 kt...becoming NW late. Gusts up to
30 kt. Waves 1 ft.
.THU...NW winds 10 to 15 kt with gusts to 25 kt. Waves 1 ft.
.THU NIGHT...W winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
.FRI...W winds 5 kt. Waves less than 1 ft.
.FRI NIGHT...SW winds around 5 kt. Waves 1 ft.
.SAT...W winds 5 to 10 kt. Waves 1 ft. A chance of snow after
midnight.
.SUN...NW winds 10 to 15 kt. Waves 1 ft. A chance of snow in the
morning.

$$

ANZ534-110900-
Chesapeake Bay from Drum Point to Smith Point-
1258 PM EST Wed Dec 10 2025

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

.THIS AFTERNOON...SW winds 25 kt with gusts to 30 kt. Waves 5 ft. A
slight chance of rain.
.TONIGHT...SW winds 20 to 25 kt...becoming NW late. Gusts up to
30 kt. Waves 4 ft.
.THU...NW winds 20 to 25 kt with gusts to 30 kt. Waves 4 ft.
.THU NIGHT...NW winds 10 to 15 kt with gusts to 25 kt. Waves 2 to
3 ft.
.FRI...W winds 5 to 10 kt. Waves 1 to 2 ft.
.FRI NIGHT...SW winds 5 to 10 kt. Waves 1 ft.
.SAT...W winds 10 to 15 kt. Waves 1 to 2 ft. A chance of snow after
midnight.
.SUN...NW winds 20 to 25 kt. Waves 3 ft. A chance of snow in the
morning.

$$

ANZ543-110900-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
1258 PM EST Wed Dec 10 2025

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

.THIS AFTERNOON...SW winds 25 kt with gusts to 30 kt. Waves 3 ft. A
slight chance of rain.
.TONIGHT...SW winds 20 to 25 kt...becoming NW late. Gusts up to
30 kt. Waves 3 ft.
.THU...NW winds 20 to 25 kt with gusts to 30 kt. Waves 2 to 3 ft.
.THU NIGHT...NW winds 10 to 15 kt with gusts to 25 kt. Waves 1 to
2 ft.
.FRI...W winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...SW winds 5 to 10 kt. Waves 1 ft or less.
.SAT...W winds 10 to 15 kt. Waves 1 ft. A chance of snow after
midnight.
.SUN...NW winds 20 to 25 kt. Waves 2 to 3 ft. A chance of snow in
the morning.

$$