762
FZUS51 KLWX 041908
CWFLWX

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

ANZ500-050900-
208 PM EST Thu Dec 4 2025

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

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

$$

ANZ535-050900-
Tidal Potomac from Key Bridge to Indian Head-
208 PM EST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 PM EST THIS EVENING...

.THIS AFTERNOON...NW winds 15 kt with gusts to 25 kt. Waves 1 ft.
.TONIGHT...N winds 5 to 10 kt. Waves 1 ft. Snow likely. Vsby 1 to
3 NM.
.FRI...E winds around 5 kt. Waves 1 ft. Snow. Vsby 1 to 3 NM.
.FRI NIGHT...Light winds. Waves flat. Patchy fog.
.SAT...SW winds around 5 kt. Waves 1 ft or less.
.SAT NIGHT...NW winds around 5 kt. Waves 1 ft or less.
.SUN...W winds 5 to 10 kt. Waves 1 ft.
.MON...N winds 10 to 15 kt...diminishing to around 5 kt after
midnight. Waves 1 ft.

$$

ANZ536-050900-
Tidal Potomac from Indian Head to Cobb Island-
208 PM EST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 PM EST THIS EVENING...

.THIS AFTERNOON...NW winds 10 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. Snow. Vsby 1 to 3 NM.
.FRI...NE winds around 5 kt. Waves 1 ft. Snow. Vsby 1 to 3 NM.
.FRI NIGHT...NW winds around 5 kt. Waves 1 ft or less. Patchy fog.
.SAT...SW winds around 5 kt. Waves 1 ft or less.
.SAT NIGHT...NW winds around 5 kt. Waves 1 ft.
.SUN...SE winds around 5 kt...becoming NW 10 to 15 kt after
midnight. Waves 1 ft.
.MON...N winds 10 to 15 kt...diminishing to around 5 kt after
midnight. Waves 1 ft.

$$

ANZ537-050900-
Tidal Potomac from Cobb Island to Smith Point-
208 PM EST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EST FRIDAY...

.THIS AFTERNOON...NW winds 10 to 15 kt with gusts to 20 kt. Waves
2 ft.
.TONIGHT...N winds 10 to 15 kt...becoming NE late. Gusts up to
20 kt. Waves 2 ft. Snow. Vsby 1 to 3 NM.
.FRI...NE winds 5 to 10 kt. Waves 1 ft. Snow with a chance of rain.
Vsby 1 to 3 NM.
.FRI NIGHT...N winds 5 kt. Waves less than 1 ft. Patchy fog.
.SAT...W winds around 5 kt. Waves 1 ft or less.
.SAT NIGHT...NW winds 5 to 10 kt. Waves 1 ft or less.
.SUN...NE winds 5 to 10 kt...becoming SW in the evening, then
becoming NW 15 to 20 kt after midnight. Waves 1 ft or less...
building to 2 ft after midnight.
.MON...N winds 15 to 20 kt...diminishing to 5 to 10 kt after
midnight. Waves 2 to 3 ft.

$$

ANZ530-050900-
Chesapeake Bay north of Pooles Island-
208 PM EST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EST TONIGHT...

.THIS AFTERNOON...NW winds 15 kt with gusts to 25 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...E winds around 5 kt. Waves 1 ft. A chance of snow. Vsby 1 to
3 NM.
.FRI NIGHT...N winds around 5 kt. Waves flat. Patchy fog.
.SAT...W winds around 5 kt. Waves 1 ft.
.SAT NIGHT...NW winds around 5 kt. Waves 1 ft.
.SUN...NW winds 10 to 15 kt. Waves 1 ft.
.MON...N winds 15 to 20 kt...diminishing to 5 to 10 kt. Waves 1 to
2 ft.

$$

ANZ531-050900-
Chesapeake Bay from Pooles Island to Sandy Point-
208 PM EST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EST TONIGHT...

.THIS AFTERNOON...NW winds 15 to 20 kt with gusts to 25 kt. Waves
3 ft.
.TONIGHT...N winds 15 to 20 kt with gusts to 25 kt... becoming NE
5 to 10 kt after midnight. Waves 2 ft. A chance of snow. Vsby 1 to
3 NM.
.FRI...E winds 5 to 10 kt. Waves 1 ft. Snow likely. Vsby 1 to 3 NM.
.FRI NIGHT...N winds around 5 kt. Waves flat. Patchy fog.
.SAT...W winds 5 kt. Waves flat.
.SAT NIGHT...NW winds 5 kt. Waves less than 1 ft.
.SUN...NW winds 5 kt...becoming SW in the evening, then becoming NW
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 2 to 3 ft...subsiding to 1 ft after midnight.

$$

ANZ538-050900-
Patapsco River including Baltimore Harbor-
208 PM EST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EST TONIGHT...

.THIS AFTERNOON...NW winds 15 kt with gusts to 25 kt. Waves 2 ft.
.TONIGHT...N winds 10 to 15 kt with gusts to 20 kt... becoming NE
5 kt after midnight. Waves 1 ft. A chance of snow. Vsby 1 to 3 NM.
.FRI...E winds 5 kt. Waves less than 1 ft. Snow likely. Vsby 1 to
3 NM.
.FRI NIGHT...N winds around 5 kt. Waves flat. Patchy fog.
.SAT...SW winds around 5 kt. Waves flat.
.SAT NIGHT...NW winds around 5 kt. Waves flat.
.SUN...NW winds 5 to 10 kt. Waves 1 ft or less.
.MON...N winds 10 to 15 kt...becoming NE around 5 kt after midnight.
Waves 1 ft or less.

$$

ANZ539-050900-
Chester River to Queenstown MD-
208 PM EST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EST TONIGHT...

.THIS AFTERNOON...NW winds 15 kt with gusts to 25 kt. Waves 3 ft.
.TONIGHT...N winds 10 to 15 kt with gusts to 25 kt... becoming NE
5 to 10 kt after midnight. Waves 3 ft... subsiding to 1 ft after
midnight. A chance of snow. Vsby 1 to 3 NM.
.FRI...E winds 5 kt. Waves less than 1 ft. Snow likely. Vsby 1 to
3 NM.
.FRI NIGHT...N winds around 5 kt. Waves flat. A chance of snow and
rain. Patchy fog.
.SAT...W winds around 5 kt. Waves flat.
.SAT NIGHT...NW winds around 5 kt. Waves 1 ft or less.
.SUN...NW winds 5 kt...becoming W 10 to 15 kt. Waves 1 ft or less...
building to 2 ft after midnight.
.MON...N winds 15 to 20 kt...diminishing to 5 to 10 kt. Waves 1 to
2 ft.

$$

ANZ532-050900-
Chesapeake Bay from Sandy Point to North Beach-
208 PM EST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EST TONIGHT...

.THIS AFTERNOON...NW winds 15 to 20 kt with gusts to 25 kt. Waves
3 ft.
.TONIGHT...N winds 15 to 20 kt with gusts to 25 kt... becoming NE
10 to 15 kt after midnight. Waves 2 to 3 ft. Snow likely. Vsby 1 to
3 NM.
.FRI...E winds 5 to 10 kt. Waves 1 ft. Snow. Vsby 1 to 3 NM.
.FRI NIGHT...N winds 5 kt. Waves flat. A chance of rain and snow.
Patchy fog.
.SAT...W winds 5 kt. Waves flat.
.SAT NIGHT...NW winds 5 to 10 kt. Waves 1 ft or less.
.SUN...N winds 5 to 10 kt...becoming E in the afternoon, then
becoming SW in the evening...becoming NW 15 to 20 kt after midnight.
Waves 1 to 2 ft.
.MON...N winds 20 to 25 kt...becoming NE 5 to 10 kt after midnight.
Waves 2 to 3 ft...subsiding to 1 ft after midnight.

$$

ANZ540-050900-
Eastern Bay-
208 PM EST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EST TONIGHT...

.THIS AFTERNOON...NW winds 15 kt with gusts to 25 kt. 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. Snow likely. Vsby 1 to
3 NM.
.FRI...E winds 5 to 10 kt. Waves 1 ft or less. Snow. Vsby 1 to 3 NM.
.FRI NIGHT...N winds around 5 kt. Waves flat. A chance of rain and
snow. Patchy fog.
.SAT...W winds around 5 kt. Waves flat.
.SAT NIGHT...NW winds around 5 kt. Waves 1 ft or less.
.SUN...NW winds around 5 kt...becoming SW in the evening, then
becoming NW 15 to 20 kt after midnight. Waves 1 ft or less.
.MON...N winds 15 to 20 kt...becoming NE 5 to 10 kt after midnight.
Waves 1 to 2 ft.

$$

ANZ533-050900-
Chesapeake Bay from North Beach to Drum Point-
208 PM EST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EST FRIDAY...

.THIS AFTERNOON...NW winds 15 to 20 kt with gusts to 25 kt. Waves
3 ft.
.TONIGHT...N winds 15 to 20 kt with gusts to 25 kt... becoming NE
10 to 15 kt after midnight. Waves 2 to 3 ft. Snow likely. Vsby 1 to
3 NM.
.FRI...NE winds 5 to 10 kt. Waves 1 ft. Snow. Vsby 1 to 3 NM.
.FRI NIGHT...N winds 5 kt. Waves less than 1 ft. A chance of rain
and snow. Patchy fog.
.SAT...W winds 5 kt. Waves flat.
.SAT NIGHT...NW winds 5 to 10 kt. Waves 1 ft or less.
.SUN...NE winds 5 to 10 kt...becoming SW in the evening, then
becoming NW 15 to 20 kt after midnight. Waves 1 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.

$$

ANZ541-050900-
Choptank River to Cambridge MD and the Little Choptank River-
208 PM EST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EST TONIGHT...

.THIS AFTERNOON...NW winds 15 to 20 kt with gusts to 25 kt. Waves
2 to 3 ft.
.TONIGHT...N winds 15 to 20 kt with gusts to 25 kt... becoming NE
10 to 15 kt late. Waves 1 to 2 ft. Snow likely. Vsby 1 to 3 NM.
.FRI...NE winds 5 to 10 kt. Waves 1 ft. Snow. Vsby 1 to 3 NM.
.FRI NIGHT...N winds 5 kt. Waves flat. A chance of rain and snow.
Patchy fog.
.SAT...W winds around 5 kt. Waves flat.
.SAT NIGHT...NW winds 5 to 10 kt. Waves 1 ft or less.
.SUN...NW winds 5 to 10 kt...becoming SW in the evening, then
becoming NW 15 to 20 kt after midnight. Waves 1 to 2 ft.
.MON...N winds 20 to 25 kt...becoming NE 5 to 10 kt after midnight.
Waves 2 to 3 ft...subsiding to 1 ft after midnight.

$$

ANZ542-050900-
Patuxent River to Broomes Island MD-
208 PM EST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EST TONIGHT...

.THIS AFTERNOON...NW winds 10 kt with gusts to 20 kt. Waves 1 ft.
.TONIGHT...N winds 10 to 15 kt...becoming NE 5 to 10 kt after
midnight. Gusts up to 20 kt. Waves 1 ft. Snow likely. Vsby 1 to
3 NM.
.FRI...NE winds 5 kt. Waves less than 1 ft. Snow. Vsby 1 to 3 NM.
.FRI NIGHT...N winds around 5 kt. Waves 1 ft. A chance of rain and
snow. Patchy fog.
.SAT...W winds around 5 kt. Waves 1 ft.
.SAT NIGHT...NW winds around 5 kt. Waves 1 ft.
.SUN...NE winds 5 kt...becoming NW 10 to 15 kt after midnight. Waves
1 ft.
.MON...N winds 15 to 20 kt...diminishing to 5 to 10 kt after
midnight. Waves 1 ft.

$$

ANZ534-050900-
Chesapeake Bay from Drum Point to Smith Point-
208 PM EST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EST FRIDAY...

.THIS AFTERNOON...NW winds 10 kt...increasing to 20 kt with gusts to
25 kt late. Waves 2 to 3 ft.
.TONIGHT...N winds 15 to 20 kt with gusts to 25 kt... becoming NE
10 to 15 kt late. Waves 3 ft. Snow likely. Vsby 1 to 3 NM.
.FRI...NE winds 5 to 10 kt. Waves 1 to 2 ft. Snow with rain likely.
Vsby 1 to 3 NM.
.FRI NIGHT...N winds 5 to 10 kt. Waves 1 ft. A chance of rain and
snow. Patchy fog.
.SAT...W winds 5 kt. Waves less than 1 ft.
.SAT NIGHT...NW winds 5 to 10 kt. Waves 1 ft or less.
.SUN...NE winds 5 to 10 kt...becoming SW in the evening, then
becoming NW 20 to 25 kt after midnight. Waves 1 ft...building to
3 ft after midnight.
.MON...N winds 20 to 25 kt...becoming NE 10 to 15 kt after midnight.
Waves 4 ft...subsiding to 2 ft after midnight.

$$

ANZ543-050900-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
208 PM EST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EST FRIDAY...

.THIS AFTERNOON...NW winds 10 kt...increasing to 20 kt late. Gusts
up to 25 kt. Waves 2 ft.
.TONIGHT...N winds 15 to 20 kt with gusts to 25 kt... becoming NE
10 to 15 kt late. Waves 2 ft. Snow likely. Vsby 1 to 3 NM.
.FRI...NE winds 5 to 10 kt. Waves 1 ft. Snow with rain likely. Vsby
1 to 3 NM.
.FRI NIGHT...N winds 5 to 10 kt. Waves 1 ft. A chance of rain and
snow. Patchy fog.
.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 5 to 10 kt...becoming NW 15 to 20 kt after midnight.
Waves 1 to 2 ft.
.MON...N winds 20 to 25 kt...diminishing to 10 to 15 kt after
midnight. Waves 2 to 3 ft...subsiding to 1 ft after midnight.

$$