724
FZUS51 KLWX 101404
CWFLWX

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

ANZ500-102100-
904 AM 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 week before Arctic
high pressure moves in by early next week. Small Craft Advisories
will likely be needed Thursday night, and again over the weekend.
Gale conditions are possible on Sunday.

$$

ANZ535-102100-
Tidal Potomac from Key Bridge to Indian Head-
904 AM EST Wed Dec 10 2025

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

.REST OF TODAY...SW winds 10 kt with gusts to 20 kt. Waves 1 ft. A
slight chance of rain late this morning, then a chance of rain this
afternoon.
.TONIGHT...W winds 10 kt. Waves 1 ft.
.THU...NW winds 10 to 15 kt. Gusts up to 25 kt in the late morning
and afternoon. Waves 1 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...S 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.

$$

ANZ536-102100-
Tidal Potomac from Indian Head to Cobb Island-
904 AM EST Wed Dec 10 2025

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

.REST OF TODAY...SW winds 15 kt with gusts to 20 kt. Waves 1 ft. A
slight chance of rain this afternoon.
.TONIGHT...SW winds 10 to 15 kt...becoming W after midnight. Gusts
up to 20 kt. Waves 1 ft.
.THU...NW winds 10 to 15 kt with gusts to 20 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...S winds 5 to 10 kt. Waves 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 ft.

$$

ANZ537-102100-
Tidal Potomac from Cobb Island to Smith Point-
904 AM EST Wed Dec 10 2025

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

.REST OF TODAY...SW winds 20 kt with gusts to 30 kt. Waves 2 to
3 ft. A slight chance of rain this afternoon.
.TONIGHT...SW winds 15 to 20 kt...becoming NW late. Gusts up to
30 kt. Waves 2 to 3 ft.
.THU...NW winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.
.THU NIGHT...W winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft.
.FRI...SW winds 5 kt. Waves less than 1 ft. A chance of snow.
.FRI NIGHT...SW winds 5 to 10 kt. Waves 1 ft.
.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...building to 3 ft.

$$

ANZ530-102100-
Chesapeake Bay north of Pooles Island-
904 AM EST Wed Dec 10 2025

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

.REST OF TODAY...SW winds 15 kt with gusts to 25 kt. Waves 2 ft.
Rain likely this afternoon.
.TONIGHT...SW winds 10 to 15 kt...becoming W after midnight. Gusts
up to 25 kt. Waves 2 ft.
.THU...W winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.THU NIGHT...W winds 15 to 20 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. A chance of snow.
.SAT...W winds 10 to 15 kt. Waves 1 ft. A chance of snow after
midnight.
.SUN...NW winds 15 to 20 kt. Waves 2 ft.

$$

ANZ531-102100-
Chesapeake Bay from Pooles Island to Sandy Point-
904 AM EST Wed Dec 10 2025

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

.REST OF TODAY...S winds 15 to 20 kt with gusts to 30 kt. Waves
3 ft. Rain likely this afternoon.
.TONIGHT...SW winds 15 kt...becoming W after midnight. Gusts up to
25 kt. Waves 3 ft.
.THU...NW winds 20 to 25 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 10 to 15 kt. Waves 1 ft. A chance of snow.
.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.

$$

ANZ538-102100-
Patapsco River including Baltimore Harbor-
904 AM EST Wed Dec 10 2025

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

.REST OF TODAY...SW winds 15 kt with gusts to 20 kt. Waves 1 ft. A
slight chance of rain late this morning, then rain likely this
afternoon.
.TONIGHT...W winds 10 to 15 kt. Gusts up to 20 kt. Waves 1 ft.
.THU...W winds 15 to 20 kt with gusts to 25 kt. Waves 1 to 2 ft.
.THU NIGHT...W winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.FRI...W winds 5 to 10 kt. Waves 1 ft. A chance of snow.
.FRI NIGHT...SW winds around 5 kt. Waves flat. A chance of snow.
.SAT...W winds 10 to 15 kt. Waves 1 ft. A chance of snow after
midnight.
.SUN...NW winds 10 to 15 kt. Waves 1 ft.

$$

ANZ539-102100-
Chester River to Queenstown MD-
904 AM EST Wed Dec 10 2025

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

.REST OF TODAY...S winds 20 kt with gusts to 30 kt. Waves 3 ft. Rain
likely this afternoon.
.TONIGHT...SW winds 15 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 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. A chance of snow.
.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 15 to 20 kt. Waves 3 ft. A chance of snow in the
morning.

$$

ANZ532-102100-
Chesapeake Bay from Sandy Point to North Beach-
904 AM EST Wed Dec 10 2025

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

.REST OF TODAY...SW winds 20 kt with gusts to 30 kt. Waves 3 ft. A
chance of rain this afternoon.
.TONIGHT...SW winds 15 to 20 kt...becoming W after midnight. Gusts
up to 25 kt. Waves 3 ft.
.THU...NW winds 20 to 25 kt with gusts to 30 kt. Waves 3 ft.
.THU NIGHT...W winds 15 to 20 kt. Gusts up to 25 kt in the evening.
Waves 2 to 3 ft.
.FRI...W winds 5 to 10 kt. Waves 1 ft. A chance of snow.
.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 3 ft. A chance of snow in the
morning.

$$

ANZ540-102100-
Eastern Bay-
904 AM EST Wed Dec 10 2025

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

.REST OF TODAY...SW winds 20 kt with gusts to 30 kt. Waves 3 ft. A
chance of rain this afternoon.
.TONIGHT...SW winds 15 to 20 kt...becoming W after midnight. Gusts
up to 25 kt. Waves 2 to 3 ft.
.THU...NW winds 15 to 20 kt with gusts to 30 kt. Waves 2 ft.
.THU NIGHT...W winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.FRI...W winds 5 to 10 kt. Waves 1 ft. A chance of snow.
.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 ft. A chance of snow in the
morning.

$$

ANZ533-102100-
Chesapeake Bay from North Beach to Drum Point-
904 AM EST Wed Dec 10 2025

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

.REST OF TODAY...SW winds 20 kt with gusts to 30 kt. Waves 3 ft. A
chance of rain this afternoon.
.TONIGHT...SW winds 15 to 20 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 3 ft.
.THU NIGHT...W winds 15 to 20 kt. Gusts up to 25 kt in the evening.
Waves 2 to 3 ft.
.FRI...W winds 5 to 10 kt. Waves 1 ft. A chance of snow.
.FRI NIGHT...SW winds 10 to 15 kt. Waves 1 ft. A chance of snow.
.SAT...W winds 10 to 15 kt. Waves 2 ft. A chance of snow after
midnight.
.SUN...NW winds 25 to 30 kt. Waves 3 ft. A chance of snow in the
morning.

$$

ANZ541-102100-
Choptank River to Cambridge MD and the Little Choptank River-
904 AM EST Wed Dec 10 2025

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

.REST OF TODAY...SW winds 20 kt with gusts to 30 kt. Waves 3 ft. A
chance of rain this afternoon.
.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. A chance of snow.
.FRI NIGHT...SW winds 10 to 15 kt. Waves 1 ft. A chance of snow.
.SAT...W winds 10 to 15 kt. Waves 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.

$$

ANZ542-102100-
Patuxent River to Broomes Island MD-
904 AM EST Wed Dec 10 2025

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

.REST OF TODAY...SW winds 15 kt with gusts to 25 kt. Waves 1 ft. A
slight chance of rain this afternoon.
.TONIGHT...SW winds 10 to 15 kt...becoming NW late. Gusts up to
20 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. A chance of snow.
.FRI NIGHT...SW winds 5 to 10 kt. Waves 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 1 ft. A chance of snow in the
morning.

$$

ANZ534-102100-
Chesapeake Bay from Drum Point to Smith Point-
904 AM EST Wed Dec 10 2025

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

.REST OF TODAY...SW winds 20 to 25 kt with gusts to 35 kt. Waves
4 ft. A slight chance of rain this afternoon.
.TONIGHT...SW winds 15 to 20 kt...becoming NW 20 to 25 kt 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 15 to 20 kt with gusts to 25 kt. Waves 2 to
3 ft.
.FRI...W winds 5 to 10 kt. Waves 1 ft. A chance of snow.
.FRI NIGHT...SW winds 10 to 15 kt. Waves 1 to 2 ft.
.SAT...W winds 10 to 15 kt. Waves 2 ft. A chance of snow after
midnight.
.SUN...NW winds 25 to 30 kt. Waves 3 ft...building to 5 ft. A chance
of snow in the morning.

$$

ANZ543-102100-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
904 AM EST Wed Dec 10 2025

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

.REST OF TODAY...SW winds 20 to 25 kt with gusts to 35 kt. Waves
3 ft. A slight chance of rain this afternoon.
.TONIGHT...SW winds 15 to 20 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 ft.
.THU NIGHT...NW winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.FRI...W winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...SW winds 10 to 15 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 25 to 30 kt. Waves 2 to 3 ft. A chance of snow in
the morning.

$$