397
FZUS51 KLWX 070858
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
358 AM EST Sun Dec 7 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.

ANZ500-072300-
358 AM EST Sun Dec 7 2025

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

Weak high pressure will remain nearby today before a potent cold
front crosses the waters late tonight. A strong area of Canadian
high pressure builds over the region on late Monday into Tuesday.
Another clipper-like system moves through the area by mid-week
before a secondary cold front crosses the waters on Thursday. Small
Craft Advisories will likely be needed tonight into Monday, and
again Tuesday through Wednesday night.

$$

ANZ535-072300-
Tidal Potomac from Key Bridge to Indian Head-
358 AM EST Sun Dec 7 2025

...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM EST THIS MORNING...

.REST OF THE OVERNIGHT...Light winds. Waves flat. Patchy fog. Vsby
1 NM or less.
.TODAY...S winds around 5 kt. Waves 1 ft or less. Patchy fog. Vsby
1 to 3 NM.
.TONIGHT...SW winds around 5 kt...becoming N with gusts to 25 kt
after midnight. Waves 1 ft.
.MON...N winds 10 to 15 kt with gusts to 25 kt. Waves 1 to 2 ft.
.MON NIGHT...N winds around 5 kt. Gusts up to 20 kt in the evening.
Waves 1 ft.
.TUE...SW winds 5 to 10 kt. Waves 1 ft.
.TUE NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.WED...SW winds 10 to 15 kt...becoming W 5 to 10 kt after midnight.
Waves 1 to 2 ft.
.THU...W winds 5 to 10 kt...becoming E. Waves 1 ft. A chance of rain
and snow through the night.

$$

ANZ536-072300-
Tidal Potomac from Indian Head to Cobb Island-
358 AM EST Sun Dec 7 2025

...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM EST THIS MORNING...

.REST OF THE OVERNIGHT...N winds 5 kt. Waves less than 1 ft.
Widespread dense fog and dense freezing fog. Vsby 1 NM or less.
.TODAY...S winds around 5 kt. Waves 1 ft or less. Areas of dense
fog. Vsby 1 NM or less.
.TONIGHT...SW winds around 5 kt...becoming N 10 to 15 kt with gusts
to 25 kt after midnight. Waves 1 to 2 ft.
.MON...N winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft.
.MON NIGHT...N winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
.TUE...SW winds 5 to 10 kt. Waves 1 ft.
.TUE NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.WED...SW winds 15 to 20 kt...becoming W 10 to 15 kt after midnight.
Waves 1 to 2 ft.
.THU...W winds 5 to 10 kt...becoming E. Waves 1 ft. A chance of rain
in the evening. A chance of rain and snow after midnight.

$$

ANZ537-072300-
Tidal Potomac from Cobb Island to Smith Point-
358 AM EST Sun Dec 7 2025

...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM EST THIS MORNING...

.REST OF THE OVERNIGHT...N winds 5 kt. Waves less than 1 ft.
Widespread dense fog. Vsby 1 NM or less.
.TODAY...SE winds around 5 kt. Waves flat. Areas of dense fog. Vsby
1 NM or less.
.TONIGHT...SW winds around 5 kt...becoming NW after midnight, then
becoming N 15 to 20 kt with gusts to 30 kt late. Waves flat...
building to 2 ft after midnight.
.MON...N winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft. A chance
of snow and rain.
.MON NIGHT...NE winds 15 to 20 kt...becoming N 5 to 10 kt after
midnight. Gusts up to 25 kt. Waves 2 to 3 ft.
.TUE...N winds around 5 kt...becoming SW in the afternoon. Waves
1 ft.
.TUE NIGHT...SW winds 15 to 20 kt. Waves 2 ft.
.WED...SW winds 15 to 20 kt...becoming W after midnight. Waves 2 to
3 ft.
.THU...W winds 10 to 15 kt...becoming SE. Waves 1 to 2 ft. A chance
of rain through the night.

$$

ANZ530-072300-
Chesapeake Bay north of Pooles Island-
358 AM EST Sun Dec 7 2025

.REST OF THE OVERNIGHT...NW winds 5 kt. Waves less than 1 ft.
.TODAY...W winds around 5 kt. Waves 1 ft.
.TONIGHT...W winds around 5 kt...becoming NW 10 to 15 kt with gusts
to 25 kt after midnight. Waves 1 to 2 ft.
.MON...N winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.MON NIGHT...N winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
.TUE...E winds around 5 kt...becoming S in the afternoon. Waves
1 ft.
.TUE NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.WED...SW winds 15 to 20 kt...becoming W after midnight. Waves 1 to
2 ft. A chance of rain through the day.
.THU...W winds 10 to 15 kt...becoming NE 5 to 10 kt. Waves 1 ft. A
chance of rain and snow through the night.

$$

ANZ531-072300-
Chesapeake Bay from Pooles Island to Sandy Point-
358 AM EST Sun Dec 7 2025

.REST OF THE OVERNIGHT...NW winds 5 kt. Waves less than 1 ft.
.TODAY...W winds around 5 kt. Waves 1 ft.
.TONIGHT...W winds 5 kt...becoming N 15 to 20 kt with gusts to 30 kt
after midnight. Waves 1 ft...building to 3 ft after midnight.
.MON...N winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft.
.MON NIGHT...NE winds 10 to 15 kt. Gusts up to 25 kt in the evening.
Waves 2 ft.
.TUE...E winds around 5 kt...becoming S 10 to 15 kt with gusts to
20 kt in the afternoon. Waves 1 to 2 ft.
.TUE NIGHT...SW winds 15 to 20 kt. Waves 2 to 3 ft.
.WED...SW winds 15 to 20 kt...becoming W after midnight. Waves 2 to
3 ft. A chance of rain in the afternoon.
.THU...W winds 10 to 15 kt...becoming E 5 to 10 kt. Waves 1 to 2 ft.
A chance of rain and snow through the night.

$$

ANZ538-072300-
Patapsco River including Baltimore Harbor-
358 AM EST Sun Dec 7 2025

.REST OF THE OVERNIGHT...NW winds 5 kt. Waves flat.
.TODAY...SW winds around 5 kt. Waves flat.
.TONIGHT...W winds 5 kt...becoming NW 10 to 15 kt with gusts to
25 kt after midnight. Waves 1 ft or less.
.MON...N winds 10 to 15 kt with gusts to 25 kt. Waves 1 ft.
.MON NIGHT...NE winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
.TUE...SE winds 5 to 10 kt. Waves 1 ft or less.
.TUE NIGHT...SW winds 10 kt with gusts to 20 kt. Waves 1 ft.
.WED...SW winds 10 to 15 kt...becoming W after midnight. Waves 1 ft.
A chance of rain through the day.
.THU...W winds 10 kt...becoming NE. Waves 1 ft. A chance of rain and
snow through the night.

$$

ANZ539-072300-
Chester River to Queenstown MD-
358 AM EST Sun Dec 7 2025

.REST OF THE OVERNIGHT...N winds 5 kt. Waves less than 1 ft.
.TODAY...SW winds around 5 kt. Waves 1 ft or less.
.TONIGHT...SW winds 5 kt...becoming N 10 to 15 kt with gusts to
30 kt after midnight. Waves flat...building to 3 ft after midnight.
.MON...N winds 15 to 20 kt with gusts to 30 kt. Waves 2 to 3 ft.
.MON NIGHT...NE winds 5 to 10 kt with gusts to 20 kt. Waves 1 to
2 ft.
.TUE...E winds 5 kt...becoming S 10 to 15 kt in the afternoon. Waves
1 ft or less.
.TUE NIGHT...SW winds 15 to 20 kt. Waves 2 ft.
.WED...SW winds 15 to 20 kt...becoming W after midnight. Waves 2 ft.
.THU...NW winds 10 to 15 kt...becoming E 5 to 10 kt. Waves 1 to
2 ft. A chance of rain through the night.

$$

ANZ532-072300-
Chesapeake Bay from Sandy Point to North Beach-
358 AM EST Sun Dec 7 2025

.REST OF THE OVERNIGHT...N winds 10 kt. Waves 1 ft.
.TODAY...SE winds 5 kt. Waves less than 1 ft.
.TONIGHT...SW winds 5 kt...becoming N 15 to 20 kt with gusts to
30 kt after midnight. Waves 1 ft...building to 3 ft after midnight.
.MON...N winds 20 to 25 kt with gusts to 30 kt. Waves 3 ft.
.MON NIGHT...NE winds 15 to 20 kt...diminishing to 5 to 10 kt after
midnight. Gusts up to 25 kt. Waves 2 to 3 ft.
.TUE...E winds 5 kt...becoming S 15 to 20 kt in the afternoon. Waves
1 to 2 ft.
.TUE NIGHT...SW winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.
.WED...SW winds 20 to 25 kt...becoming W 15 to 20 kt after midnight.
Waves 3 ft.
.THU...NW winds 10 to 15 kt...becoming SE. Waves 1 to 2 ft. A chance
of rain through the night.

$$

ANZ540-072300-
Eastern Bay-
358 AM EST Sun Dec 7 2025

.REST OF THE OVERNIGHT...N winds 5 kt. Waves less than 1 ft.
.TODAY...SE winds around 5 kt. Waves flat.
.TONIGHT...SW winds 5 kt...becoming NW with gusts to 20 kt after
midnight, then becoming N 15 to 20 kt with gusts to 30 kt late.
Waves flat...building to 2 ft after midnight.
.MON...N winds 15 to 20 kt with gusts to 30 kt. Waves 2 ft.
.MON NIGHT...NE winds 10 to 15 kt with gusts to 25 kt. Waves 1 to
2 ft.
.TUE...E winds around 5 kt...becoming S 10 to 15 kt with gusts to
20 kt in the afternoon. Waves 1 ft or less.
.TUE NIGHT...SW winds 15 to 20 kt. Waves 2 ft.
.WED...SW winds 15 to 20 kt...becoming W after midnight. Waves 2 to
3 ft.
.THU...NW winds 10 to 15 kt...becoming E 5 to 10 kt. Waves 1 ft. A
chance of rain through the night.

$$

ANZ533-072300-
Chesapeake Bay from North Beach to Drum Point-
358 AM EST Sun Dec 7 2025

.REST OF THE OVERNIGHT...N winds 10 kt. Waves 1 ft.
.TODAY...SE winds 5 kt. Waves less than 1 ft.
.TONIGHT...SW winds 5 kt...becoming N 15 to 20 kt with gusts to
30 kt after midnight. Waves 1 ft...building to 3 ft after midnight.
.MON...N winds 20 to 25 kt with gusts to 30 kt. Waves 4 ft.
.MON NIGHT...NE winds 15 to 20 kt with gusts to 25 kt. Waves 4 ft...
subsiding to 2 ft after midnight.
.TUE...E winds 5 kt...becoming S 15 to 20 kt in the afternoon. Waves
1 to 2 ft.
.TUE NIGHT...SW winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.
.WED...SW winds 20 to 25 kt...becoming W 15 to 20 kt after midnight.
Waves 3 ft.
.THU...NW winds 10 to 15 kt...becoming SE. Waves 1 to 2 ft. A chance
of rain through the night.

$$

ANZ541-072300-
Choptank River to Cambridge MD and the Little Choptank River-
358 AM EST Sun Dec 7 2025

.REST OF THE OVERNIGHT...N winds 10 kt. Waves 1 ft.
.TODAY...SE winds around 5 kt. Waves 1 ft or less.
.TONIGHT...SW winds 5 kt...becoming N 15 to 20 kt with gusts to
30 kt after midnight. Waves 1 to 2 ft.
.MON...N winds 20 to 25 kt with gusts to 30 kt. Waves 2 to 3 ft.
.MON NIGHT...NE winds 15 to 20 kt...diminishing to 5 to 10 kt after
midnight. Gusts up to 25 kt. Waves 2 ft.
.TUE...E winds 5 kt...becoming S 10 to 15 kt with gusts to 20 kt in
the afternoon. Waves 1 to 2 ft.
.TUE NIGHT...SW winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.WED...SW winds 20 to 25 kt...becoming W 15 to 20 kt after midnight.
Waves 2 to 3 ft.
.THU...NW winds 10 to 15 kt...becoming SE. Waves 1 to 2 ft. A chance
of rain through the night.

$$

ANZ542-072300-
Patuxent River to Broomes Island MD-
358 AM EST Sun Dec 7 2025

...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM EST THIS MORNING...

.REST OF THE OVERNIGHT...N winds 5 kt. Waves less than 1 ft. Patchy
fog. Vsby 1 NM or less.
.TODAY...SE winds around 5 kt. Waves 1 ft.
.TONIGHT...W winds around 5 kt...becoming N 10 to 15 kt with gusts
to 25 kt after midnight. Waves 1 ft.
.MON...N winds 10 to 15 kt with gusts to 30 kt. Waves 1 ft.
.MON NIGHT...NE winds 10 to 15 kt with gusts to 25 kt. Waves 1 ft.
.TUE...N winds around 5 kt...becoming SW in the afternoon. Waves
1 ft.
.TUE NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.WED...SW winds 15 to 20 kt...becoming W 10 to 15 kt after midnight.
Waves 1 ft.
.THU...W winds 5 to 10 kt...becoming SE. Waves 1 ft. A chance of
rain through the night.

$$

ANZ534-072300-
Chesapeake Bay from Drum Point to Smith Point-
358 AM EST Sun Dec 7 2025

...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM EST THIS MORNING...

.REST OF THE OVERNIGHT...N winds 10 kt. Waves 1 ft.
.TODAY...NE winds 5 to 10 kt...becoming S in the afternoon. Waves
1 ft or less.
.TONIGHT...W winds 5 kt...becoming NW with gusts to 20 kt after
midnight, then becoming N 15 to 20 kt with gusts to 30 kt late.
Waves flat...building to 3 ft after midnight.
.MON...N winds 20 to 25 kt with gusts to 30 kt. Waves 4 ft. A chance
of snow and rain.
.MON NIGHT...N winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft.
.TUE...N winds 5 to 10 kt...becoming SW 10 to 15 kt in the
afternoon. Waves 1 ft.
.TUE NIGHT...SW winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.
.WED...SW winds 20 to 25 kt...becoming W after midnight. Waves 4 ft.
.THU...NW winds 15 to 20 kt...becoming SE 10 to 15 kt. Waves 2 to
3 ft...subsiding to 1 to 2 ft. A chance of rain through the night.

$$

ANZ543-072300-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
358 AM EST Sun Dec 7 2025

...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM EST THIS MORNING...

.REST OF THE OVERNIGHT...N winds 10 kt. Waves 1 ft.
.TODAY...SE winds 5 kt. Waves less than 1 ft.
.TONIGHT...SW winds 5 kt...becoming NW with gusts to 20 kt after
midnight, then becoming N 15 to 20 kt with gusts to 30 kt late.
Waves flat...building to 2 ft after midnight.
.MON...N winds 15 to 20 kt with gusts to 30 kt. Waves 2 ft. A chance
of snow and rain.
.MON NIGHT...N winds 15 to 20 kt with gusts to 30 kt. Waves 2 ft.
.TUE...N winds 5 to 10 kt...becoming SW 10 to 15 kt in the
afternoon. Waves 1 ft.
.TUE NIGHT...SW winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.WED...SW winds 20 to 25 kt...becoming W after midnight. Waves 2 to
3 ft.
.THU...NW winds 15 to 20 kt...becoming SE 10 to 15 kt. Waves 1 to
2 ft. A chance of rain through the night.

$$