942
FZUS51 KLWX 152358
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
658 PM EST Mon Dec 15 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.

ANZ500-160900-
658 PM EST Mon Dec 15 2025

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

Arctic high pressure will gradually build into the area late
tonight into Tuesday before moving offshore Wednesday. Freezing
spray is possible tonight. Small Craft Advisories may be needed
Tuesday night for portions of the waters in southerly channeling.
Then SCAs are likely Thursday into Thursday night ahead of a strong
cold front passage, with Gale-force winds not out of the question.

$$

ANZ535-160900-
Tidal Potomac from Key Bridge to Indian Head-
658 PM EST Mon Dec 15 2025

.TONIGHT...S winds 5 to 10 kt. Waves 1 ft.
.TUE...W winds around 5 kt. Waves 1 ft.
.TUE NIGHT...S winds around 5 kt. Waves 1 ft.
.WED...SW winds 5 kt. Waves less than 1 ft.
.WED NIGHT...N winds around 5 kt. Waves 1 ft.
.THU...S winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Waves
1 ft.
.THU NIGHT...S winds 15 to 20 kt with gusts to 30 kt. Waves 2 ft.
Rain.
.FRI...W winds 15 to 20 kt...becoming NW around 5 kt after midnight.
Waves 1 to 2 ft.
.SAT...SW winds 10 to 15 kt. Waves 1 ft.

$$

ANZ536-160900-
Tidal Potomac from Indian Head to Cobb Island-
658 PM EST Mon Dec 15 2025

.TONIGHT...SW winds 10 kt. Gusts up to 20 kt late this evening and
overnight. Waves 1 ft.
.TUE...SE winds around 5 kt. Waves 1 ft.
.TUE NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.WED...SW winds 5 to 10 kt. Waves 1 ft.
.WED NIGHT...N winds around 5 kt. Waves 1 ft.
.THU...S winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Waves
1 ft.
.THU NIGHT...S winds 20 to 25 kt with gusts to 30 kt. Waves 2 ft.
Rain.
.FRI...W winds 20 to 25 kt...becoming NW 5 kt. Waves 3 ft...
subsiding to 1 ft. A chance of rain in the morning.
.SAT...SW winds 10 to 15 kt...becoming S 15 to 20 kt. Waves 1 to
2 ft.

$$

ANZ537-160900-
Tidal Potomac from Cobb Island to Smith Point-
658 PM EST Mon Dec 15 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 PM EST THIS EVENING
THROUGH TUESDAY MORNING...

.TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.TUE...NW winds 5 to 10 kt...becoming SE in the afternoon. Waves
1 ft or less.
.TUE NIGHT...S winds 10 to 15 kt. Waves 1 ft.
.WED...SW winds 10 to 15 kt. Waves 1 ft.
.WED NIGHT...N winds 5 kt. Waves less than 1 ft.
.THU...SE winds 10 to 15 kt. Waves 1 to 2 ft.
.THU NIGHT...S winds 20 to 25 kt with gusts to 30 kt. Waves 3 ft.
Rain.
.FRI...W winds 20 to 25 kt...becoming NW 15 to 20 kt in the evening,
then diminishing to 5 to 10 kt after midnight. Waves 2 to 3 ft...
subsiding to 1 ft after midnight. A chance of rain in the morning.
.SAT...NW winds 5 to 10 kt...becoming S 15 to 20 kt. Waves 1 to
2 ft.

$$

ANZ530-160900-
Chesapeake Bay north of Pooles Island-
658 PM EST Mon Dec 15 2025

.TONIGHT...SW winds 10 kt. Waves 1 ft.
.TUE...W winds 5 to 10 kt. Waves 1 ft.
.TUE NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.WED...SW winds 5 to 10 kt. Waves 1 ft.
.WED NIGHT...NW winds around 5 kt. Waves 1 ft or less.
.THU...SE winds 5 to 10 kt. Waves 1 ft.
.THU NIGHT...S winds 25 to 30 kt. Waves 2 to 3 ft. Rain.
.FRI...W winds 25 to 30 kt...becoming NW 10 to 15 kt after midnight.
Waves 2 to 3 ft...subsiding to 1 ft after midnight. A chance of rain
in the morning.
.SAT...SW winds 5 to 10 kt...becoming S 10 to 15 kt. Waves 1 to
2 ft.

$$

ANZ531-160900-
Chesapeake Bay from Pooles Island to Sandy Point-
658 PM EST Mon Dec 15 2025

.TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt late this evening
and overnight. Waves 1 ft.
.TUE...NW winds 5 to 10 kt...becoming S late. Waves 1 ft or less.
.TUE NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.WED...SW winds 5 to 10 kt. Waves 1 ft.
.WED NIGHT...N winds around 5 kt. Waves 1 ft or less.
.THU...SE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Waves 1 to 2 ft.
.THU NIGHT...S winds 25 to 30 kt. Waves 3 ft. Rain.
.FRI...W winds 25 to 30 kt...becoming NW 10 to 15 kt after midnight.
Waves 3 ft...subsiding to 2 ft after midnight. A chance of rain in
the morning.
.SAT...SW winds 10 to 15 kt...becoming S 15 to 20 kt. Waves 1 to
2 ft...building to 2 to 3 ft.

$$

ANZ538-160900-
Patapsco River including Baltimore Harbor-
658 PM EST Mon Dec 15 2025

.TONIGHT...SW winds 5 kt. Gusts up to 20 kt late this evening and
overnight. Waves 1 ft or less.
.TUE...W winds 5 kt. Waves flat.
.TUE NIGHT...S winds 5 kt. Waves flat.
.WED...SW winds 5 kt. Waves less than 1 ft.
.WED NIGHT...N winds around 5 kt. Waves flat.
.THU...SE winds 5 to 10 kt. Waves 1 ft or less.
.THU NIGHT...S winds 15 to 20 kt with gusts to 30 kt. Waves 1 to
2 ft. Rain.
.FRI...W winds 15 to 20 kt...becoming NW 5 to 10 kt after midnight.
Waves 1 to 2 ft. A chance of rain in the morning.
.SAT...SW winds 5 to 10 kt. Waves 1 ft.

$$

ANZ539-160900-
Chester River to Queenstown MD-
658 PM EST Mon Dec 15 2025

.TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt late this evening
and overnight. Waves 1 ft.
.TUE...NW winds 5 to 10 kt...becoming S late. Waves 1 ft or less.
.TUE NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.WED...SW winds 5 to 10 kt. Waves 1 ft.
.WED NIGHT...N winds around 5 kt. Waves 1 ft or less.
.THU...SE winds 5 kt...becoming S 10 to 15 kt with gusts to 20 kt in
the afternoon. Waves 1 ft.
.THU NIGHT...S winds 25 to 30 kt. Waves 3 ft. Rain.
.FRI...W winds 20 to 25 kt...becoming NW 5 to 10 kt after midnight.
Waves 3 ft...subsiding to 2 ft after midnight. A chance of rain in
the morning.
.SAT...SW winds 10 to 15 kt...becoming S 15 to 20 kt. Waves 1 to
2 ft.

$$

ANZ532-160900-
Chesapeake Bay from Sandy Point to North Beach-
658 PM EST Mon Dec 15 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 PM EST THIS EVENING
THROUGH TUESDAY MORNING...

.TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.TUE...NW winds 5 to 10 kt...becoming S late. Waves 1 ft or less.
.TUE NIGHT...S winds 10 to 15 kt. Waves 1 to 2 ft.
.WED...SW winds 10 to 15 kt. Waves 1 to 2 ft.
.WED NIGHT...N winds 5 kt. Waves less than 1 ft.
.THU...SE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Waves 1 to 2 ft.
.THU NIGHT...S winds 25 to 30 kt. Waves 4 ft. Rain.
.FRI...W winds 25 to 30 kt...becoming NW 10 to 15 kt after midnight.
Waves 3 ft...subsiding to 2 ft after midnight. A chance of rain in
the morning.
.SAT...W winds 5 to 10 kt...becoming S 20 to 25 kt. Waves 1 to
2 ft...building to 3 ft.

$$

ANZ540-160900-
Eastern Bay-
658 PM EST Mon Dec 15 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 PM EST THIS EVENING
THROUGH TUESDAY MORNING...

.TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt late this evening
and overnight. Waves 1 ft.
.TUE...NW winds 5 to 10 kt...becoming S late. Waves 1 ft or less.
.TUE NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.WED...SW winds 5 to 10 kt. Waves 1 ft.
.WED NIGHT...N winds around 5 kt. Waves 1 ft or less.
.THU...SE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Waves 1 ft.
.THU NIGHT...S winds 25 to 30 kt. Waves 2 to 3 ft. Rain.
.FRI...W winds 20 to 25 kt...becoming NW 10 to 15 kt after midnight.
Waves 2 to 3 ft...subsiding to 1 ft after midnight. A chance of rain
in the morning.
.SAT...W winds 5 to 10 kt...becoming S 15 to 20 kt. Waves 1 to 2 ft.


$$

ANZ533-160900-
Chesapeake Bay from North Beach to Drum Point-
658 PM EST Mon Dec 15 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 PM EST THIS EVENING
THROUGH TUESDAY MORNING...

.TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.TUE...NW winds 5 to 10 kt...becoming S late. Waves 1 ft or less.
.TUE NIGHT...S winds 10 to 15 kt. Waves 1 to 2 ft.
.WED...SW winds 10 to 15 kt. Waves 2 ft.
.WED NIGHT...N winds 5 kt. Waves less than 1 ft.
.THU...SE winds 5 to 10 kt...becoming S 15 to 20 kt in the
afternoon. Waves 1 to 2 ft.
.THU NIGHT...S winds 25 to 30 kt. Waves 4 ft. Rain.
.FRI...W winds 25 to 30 kt...becoming NW 10 to 15 kt. Waves 4 ft...
subsiding to 2 ft after midnight. A chance of rain in the morning.
.SAT...W winds 5 to 10 kt...becoming S 20 to 25 kt. Waves 1 to
2 ft...building to 3 ft.

$$

ANZ541-160900-
Choptank River to Cambridge MD and the Little Choptank River-
658 PM EST Mon Dec 15 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 PM EST THIS EVENING
THROUGH TUESDAY MORNING...

.TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt late this evening
and overnight. Waves 1 ft.
.TUE...NW winds 5 to 10 kt...becoming S late. Waves 1 ft or less.
.TUE NIGHT...S winds 10 to 15 kt. Waves 1 ft.
.WED...SW winds 10 to 15 kt. Waves 1 ft.
.WED NIGHT...N winds 5 kt. Waves less than 1 ft.
.THU...SE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Waves 1 to 2 ft.
.THU NIGHT...S winds 25 to 30 kt. Waves 3 ft. Rain.
.FRI...W winds 25 to 30 kt...becoming NW 10 to 15 kt. Waves 3 ft...
subsiding to 2 ft after midnight. A chance of rain in the morning.
.SAT...W winds 5 to 10 kt...becoming S 20 to 25 kt. Waves 1 to 2 ft.


$$

ANZ542-160900-
Patuxent River to Broomes Island MD-
658 PM EST Mon Dec 15 2025

.TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt late this evening
and overnight. Waves 1 ft.
.TUE...N winds around 5 kt. Waves 1 ft.
.TUE NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.WED...SW winds 5 to 10 kt. Waves 1 ft.
.WED NIGHT...N winds around 5 kt. Waves 1 ft.
.THU...SE winds 5 to 10 kt. Waves 1 ft.
.THU NIGHT...S winds 15 to 20 kt with gusts to 30 kt. Waves 1 ft.
Rain.
.FRI...W winds 15 to 20 kt...becoming NW 10 to 15 kt. Waves 1 to
2 ft. A chance of rain in the morning.
.SAT...W winds 5 to 10 kt...becoming S 10 to 15 kt. Waves 1 ft.

$$

ANZ534-160900-
Chesapeake Bay from Drum Point to Smith Point-
658 PM EST Mon Dec 15 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 PM EST THIS EVENING
THROUGH TUESDAY MORNING...

.TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt... increasing to
25 kt after midnight. Waves 1 to 2 ft.
.TUE...W winds 10 to 15 kt with gusts to 20 kt... becoming NW 5 to
10 kt in the late morning and early afternoon, then becoming S late.
Waves 1 ft.
.TUE NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.WED...SW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.WED NIGHT...NW winds 5 to 10 kt...becoming NE after midnight. Waves
1 ft.
.THU...SE winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.THU NIGHT...S winds 25 to 30 kt. Waves 4 ft. Rain.
.FRI...SW winds 25 to 30 kt...becoming NW in the afternoon and
evening, then diminishing to 15 to 20 kt after midnight. Waves 3 ft.
A chance of rain in the morning.
.SAT...NW winds 5 to 10 kt...becoming S 10 to 15 kt in the
afternoon, then becoming SW 20 to 25 kt. Waves 1 to 2 ft...building
to 3 ft.

$$

ANZ543-160900-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
658 PM EST Mon Dec 15 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 PM EST THIS EVENING
THROUGH TUESDAY MORNING...

.TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt late this evening
and overnight. Waves 1 ft.
.TUE...W winds 10 to 15 kt with gusts to 20 kt... diminishing to
5 kt in the late morning and afternoon. Waves 1 ft or less.
.TUE NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt in the late
evening and overnight. Waves 1 to 2 ft.
.WED...SW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.WED NIGHT...W winds 5 to 10 kt...becoming NE after midnight. Waves
1 ft or less.
.THU...SE winds 10 to 15 kt. Gusts up to 20 kt. Waves 1 to 2 ft.
.THU NIGHT...S winds 25 to 30 kt. Waves 3 ft. Rain.
.FRI...SW winds 25 to 30 kt...becoming NW 20 to 25 kt. Waves 2 to
3 ft. A chance of rain in the morning.
.SAT...NW winds 5 to 10 kt...becoming S 15 to 20 kt. Waves 1 to
2 ft.

$$