863
FZUS51 KLWX 120534
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
1234 AM EST Wed Nov 12 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.

ANZ500-122100-
1234 AM EST Wed Nov 12 2025

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

Upper level disturbances will track across the area today  leading
to additional cold blustery winds. Surface high pressure  builds
well to the south through Wednesday. A progressive frontal  system
pushes through the waters late Wednesday before high pressure
returns by late in the week and into the weekend. Small Craft
Advisories will likely need to be extended from tonight through
Thursday as a result.

$$

ANZ535-122100-
Tidal Potomac from Key Bridge to Indian Head-
1234 AM EST Wed Nov 12 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 7 AM EST THIS MORNING THROUGH
THIS AFTERNOON...

.OVERNIGHT...SW winds 10 kt. Waves 1 ft.
.WED...SW winds 10 to 15 kt. Gusts up to 25 kt... increasing to
30 kt in the afternoon. Waves 1 ft.
.WED NIGHT...W winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
.THU...W winds 10 to 15 kt with gusts to 25 kt. Waves 1 ft.
.THU NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.FRI...W winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...N winds around 5 kt. Waves 1 ft.
.SAT...SE winds around 5 kt...becoming S 10 to 15 kt. Waves 1 ft. A
chance of rain after midnight.
.SUN...W winds 15 to 20 kt...becoming NW 10 to 15 kt. Waves 1 to
2 ft.

$$

ANZ536-122100-
Tidal Potomac from Indian Head to Cobb Island-
1234 AM EST Wed Nov 12 2025

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

.OVERNIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.WED...SW winds 15 to 20 kt with gusts to 30 kt. Waves 2 ft.
.WED NIGHT...W winds 5 to 10 kt. Waves 1 ft.
.THU...W winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.THU NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.FRI...W winds 5 kt. Waves less than 1 ft.
.FRI NIGHT...NW winds 5 kt. Waves less than 1 ft.
.SAT...SE winds around 5 kt...becoming S 10 to 15 kt. Waves 1 ft.
.SUN...W winds 15 to 20 kt...becoming NW 10 to 15 kt. Waves 1 to
2 ft.

$$

ANZ537-122100-
Tidal Potomac from Cobb Island to Smith Point-
1234 AM EST Wed Nov 12 2025

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

.OVERNIGHT...SW winds 15 kt with gusts to 25 kt. Waves 2 ft.
.WED...SW winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.WED NIGHT...W winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft.
.THU...NW winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft.
.THU NIGHT...NW winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
.FRI...W winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.SAT...NE winds 5 to 10 kt...becoming S in the afternoon, then
increasing to 15 to 20 kt. Waves 1 to 2 ft.
.SUN...W winds 15 to 20 kt...becoming NW. Waves 2 ft.

$$

ANZ530-122100-
Chesapeake Bay north of Pooles Island-
1234 AM EST Wed Nov 12 2025

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

.OVERNIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.WED...SW winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.WED NIGHT...W winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.THU...W winds 10 to 15 kt with gusts to 25 kt. Waves 1 ft.
.THU NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.FRI...W winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.SAT...W winds 5 kt...becoming S 10 to 15 kt. Waves 1 ft or less. A
chance of rain through the night.
.SUN...W winds 15 to 20 kt. Waves 2 ft. A chance of rain in the
morning.

$$

ANZ531-122100-
Chesapeake Bay from Pooles Island to Sandy Point-
1234 AM EST Wed Nov 12 2025

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

.OVERNIGHT...SW winds 15 kt with gusts to 20 kt. Waves 2 ft.
.WED...SW winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.
.WED NIGHT...W winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.THU...W winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.THU NIGHT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft.
.FRI...W winds 10 kt. Waves 1 ft.
.FRI NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.SAT...N winds 5 to 10 kt...becoming S 10 to 15 kt. Waves 1 to 2 ft.
A chance of rain after midnight.
.SUN...W winds 15 to 20 kt. Waves 2 to 3 ft. A chance of rain in the
morning.

$$

ANZ538-122100-
Patapsco River including Baltimore Harbor-
1234 AM EST Wed Nov 12 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 7 AM EST THIS MORNING THROUGH
THIS AFTERNOON...

.OVERNIGHT...SW winds 10 kt. Waves 1 ft.
.WED...SW winds 10 to 15 kt with gusts to 25 kt. Waves 1 ft.
.WED NIGHT...W winds 10 kt with gusts to 20 kt. Waves 1 ft.
.THU...W winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.THU NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.FRI...W winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...NW winds 5 kt. Waves less than 1 ft.
.SAT...W winds 5 kt...becoming S. Waves 1 ft or less. A chance of
rain after midnight.
.SUN...W winds 10 to 15 kt. Waves 1 ft. A chance of rain in the
morning.

$$

ANZ539-122100-
Chester River to Queenstown MD-
1234 AM EST Wed Nov 12 2025

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

.OVERNIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.WED...SW winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.
.WED NIGHT...W winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft.
.THU...W winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft.
.THU NIGHT...NW winds 5 to 10 kt with gusts to 20 kt. Waves 1 to
2 ft.
.FRI...W winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...N winds 5 to 10 kt. Waves 1 ft.
.SAT...W winds 5 kt...becoming S 10 to 15 kt. Waves 1 to 2 ft. A
chance of rain after midnight.
.SUN...SW winds 15 kt...becoming W. Waves 2 to 3 ft. A chance of
rain in the morning.

$$

ANZ532-122100-
Chesapeake Bay from Sandy Point to North Beach-
1234 AM EST Wed Nov 12 2025

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

.OVERNIGHT...SW winds 15 kt with gusts to 25 kt. Waves 2 to 3 ft.
.WED...SW winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.
.WED NIGHT...W winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.THU...W winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.THU NIGHT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft.
.FRI...NW winds 10 kt. Waves 1 ft.
.FRI NIGHT...N winds 5 to 10 kt. Waves 1 ft.
.SAT...N winds 5 to 10 kt...becoming S 15 to 20 kt. Waves 1 to 2 ft.
A chance of rain after midnight.
.SUN...W winds 20 to 25 kt...becoming NW 15 to 20 kt. Waves 2 to
3 ft.

$$

ANZ540-122100-
Eastern Bay-
1234 AM EST Wed Nov 12 2025

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

.OVERNIGHT...SW winds 15 kt with gusts to 20 kt. Waves 2 ft.
.WED...SW winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.
.WED NIGHT...W winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.THU...W winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft.
.THU NIGHT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.FRI...NW winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...N winds 5 to 10 kt. Waves 1 ft.
.SAT...N winds 5 to 10 kt...becoming S in the afternoon, then
increasing to 10 to 15 kt. Waves 1 to 2 ft. A chance of rain after
midnight.
.SUN...W winds 15 to 20 kt...becoming NW. Waves 2 ft.

$$

ANZ533-122100-
Chesapeake Bay from North Beach to Drum Point-
1234 AM EST Wed Nov 12 2025

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

.OVERNIGHT...SW winds 15 to 20 kt with gusts to 25 kt. Waves 2 to
3 ft.
.WED...SW winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft.
.WED NIGHT...W winds 15 to 20 kt. Gusts up to 25 kt... increasing to
30 kt after midnight. Waves 2 ft.
.THU...NW winds 15 to 20 kt with gusts to 25 kt. Waves 2 to 3 ft.
.THU NIGHT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.FRI...NW winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...N winds 5 to 10 kt. Waves 1 ft.
.SAT...NE winds 5 to 10 kt...becoming S 10 to 15 kt in the afternoon
and evening, then becoming SW 15 to 20 kt after midnight. Waves 1 to
2 ft...building to 3 ft after midnight. A chance of rain after
midnight.
.SUN...W winds 20 to 25 kt...becoming NW 15 to 20 kt. Waves 3 ft.

$$

ANZ541-122100-
Choptank River to Cambridge MD and the Little Choptank River-
1234 AM EST Wed Nov 12 2025

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

.OVERNIGHT...SW winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.WED...SW winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.
.WED NIGHT...W winds 15 to 20 kt. Gusts up to 25 kt... increasing to
30 kt after midnight. Waves 2 ft.
.THU...NW winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.THU NIGHT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft.
.FRI...NW winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...N winds 5 to 10 kt. Waves 1 ft.
.SAT...N winds 5 to 10 kt...becoming S 15 to 20 kt. Waves 1 to 2 ft.
A chance of rain after midnight.
.SUN...W winds 15 to 20 kt...becoming NW. Waves 3 ft.

$$

ANZ542-122100-
Patuxent River to Broomes Island MD-
1234 AM EST Wed Nov 12 2025

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

.OVERNIGHT...SW winds 10 kt with gusts to 20 kt. Waves 1 ft.
.WED...SW winds 10 to 15 kt with gusts to 25 kt. Waves 1 ft.
.WED NIGHT...W winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
.THU...W winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.THU NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.FRI...NW winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.SAT...E winds 5 kt...becoming S 10 to 15 kt. Waves 1 ft.
.SUN...W winds 10 to 15 kt...becoming NW. Waves 1 ft.

$$

ANZ534-122100-
Chesapeake Bay from Drum Point to Smith Point-
1234 AM EST Wed Nov 12 2025

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

.OVERNIGHT...SW winds 20 kt with gusts to 30 kt. Waves 3 ft.
.WED...SW winds 20 to 25 kt with gusts to 30 kt. Waves 4 ft.
.WED NIGHT...W winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft.
.THU...NW winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft.
.THU NIGHT...NW winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.FRI...NW winds 5 to 10 kt with gusts to 20 kt. Waves 1 to 2 ft.
.FRI NIGHT...NW winds 10 to 15 kt. Gusts up to 20 kt. Waves 1 to
2 ft.
.SAT...NE winds 5 to 10 kt...becoming S 10 to 15 kt in the afternoon
and evening, then becoming SW 15 to 20 kt after midnight. Waves 1 to
2 ft...building to 3 ft after midnight.
.SUN...W winds 20 to 25 kt...becoming NW. Waves 3 ft.

$$

ANZ543-122100-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
1234 AM EST Wed Nov 12 2025

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

.OVERNIGHT...SW winds 20 kt with gusts to 30 kt. Waves 2 to 3 ft.
.WED...SW winds 20 to 25 kt with gusts to 30 kt. Waves 2 to 3 ft.
.WED NIGHT...NW winds 20 to 25 kt. Gusts up to 30 kt. Waves 2 ft.
.THU...NW winds 15 to 20 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...NW winds 10 kt with gusts to 20 kt. Waves 1 ft.
.FRI NIGHT...NW winds 10 to 15 kt...becoming N after midnight. Gusts
up to 20 kt. Waves 1 ft.
.SAT...N winds 5 to 10 kt...becoming SW 15 to 20 kt. Waves 1 to
2 ft.
.SUN...W winds 15 to 20 kt...becoming NW 20 to 25 kt. Waves 2 ft.

$$