489
FZUS51 KLWX 171758
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
1258 PM EST Mon Nov 17 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.

ANZ500-180900-
1258 PM EST Mon Nov 17 2025

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

Winds will abate tonight as high pressure builds in. A wave of low
pressure will likely approach Tuesday into Wednesday. Another area
of low pressure may approach late in the week.

$$

ANZ535-180900-
Tidal Potomac from Key Bridge to Indian Head-
1258 PM EST Mon Nov 17 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EST THIS EVENING...

.THIS AFTERNOON...NW winds 15 kt with gusts to 25 kt. Waves 1 ft.
.TONIGHT...NW winds 5 to 10 kt. Gusts up to 20 kt early in the
evening. Waves 1 ft.
.TUE...SW winds around 5 kt. Waves 1 ft. A chance of rain.
.TUE NIGHT...SE winds around 5 kt. Waves 1 ft. Rain.
.WED...N winds around 5 kt. Waves 1 ft.
.WED NIGHT...NE winds around 5 kt. Waves 1 ft.
.THU...SE winds around 5 kt. Waves 1 ft or less. A chance of rain
after midnight.
.FRI...SW winds 5 to 10 kt...becoming N after midnight. Waves 1 ft.
A chance of rain in the morning. A chance of rain in the evening,
then rain likely after midnight.

$$

ANZ536-180900-
Tidal Potomac from Indian Head to Cobb Island-
1258 PM EST Mon Nov 17 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EST THIS EVENING...

.THIS AFTERNOON...NW winds 15 kt with gusts to 25 kt. Waves 2 ft.
.TONIGHT...NW winds 5 to 10 kt. Gusts up to 20 kt early in the
evening. Waves 1 ft.
.TUE...SW winds around 5 kt. Waves 1 ft. A chance of rain.
.TUE NIGHT...SE winds 5 to 10 kt. Waves 1 ft. Rain.
.WED...N winds around 5 kt. Waves 1 ft.
.WED NIGHT...NE winds around 5 kt. Waves 1 ft.
.THU...SE winds around 5 kt. Waves 1 ft or less. A chance of rain
after midnight.
.FRI...SW winds 5 to 10 kt...becoming N after midnight. Waves 1 ft.
A chance of rain in the morning. A chance of rain through the night.


$$

ANZ537-180900-
Tidal Potomac from Cobb Island to Smith Point-
1258 PM EST Mon Nov 17 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EST THIS EVENING...

.THIS AFTERNOON...NW winds 15 to 20 kt with gusts to 25 kt. Waves
3 ft.
.TONIGHT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft.
.TUE...NW winds 5 to 10 kt...becoming S in the afternoon. Waves 1 ft
or less. A chance of rain.
.TUE NIGHT...SE winds 5 to 10 kt. Waves 1 ft. Rain.
.WED...NW winds 5 kt. Waves less than 1 ft.
.WED NIGHT...NE winds 5 to 10 kt. Waves 1 ft.
.THU...E winds around 5 kt. Waves 1 ft or less.
.FRI...SW winds 5 to 10 kt...becoming NW 10 to 15 kt after midnight.
Waves 1 to 2 ft. A chance of rain through the night.

$$

ANZ530-180900-
Chesapeake Bay north of Pooles Island-
1258 PM EST Mon Nov 17 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EST THIS EVENING...

.THIS AFTERNOON...NW winds 20 kt with gusts to 30 kt. Waves 2 ft.
.TONIGHT...NW winds 10 to 15 kt. Gusts up to 25 kt. Waves 1 to 2 ft.
.TUE...W winds around 5 kt. Waves 1 ft. A chance of rain.
.TUE NIGHT...S winds around 5 kt. Waves 1 ft. Rain.
.WED...NE winds 5 kt. Waves less than 1 ft.
.WED NIGHT...NE winds around 5 kt. Waves 1 ft.
.THU...E winds around 5 kt. Waves 1 ft or less. A chance of rain
after midnight.
.FRI...SW winds 5 to 10 kt...becoming NW after midnight. Waves 1 ft.
A chance of rain.

$$

ANZ531-180900-
Chesapeake Bay from Pooles Island to Sandy Point-
1258 PM EST Mon Nov 17 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EST THIS EVENING...

.THIS AFTERNOON...NW winds 20 kt with gusts to 30 kt. Waves 3 ft.
.TONIGHT...NW winds 15 to 20 kt with gusts to 25 kt... diminishing
to 5 to 10 kt after midnight. Waves 3 ft...subsiding to 1 ft after
midnight.
.TUE...W winds 5 to 10 kt. Waves 1 ft. A chance of rain.
.TUE NIGHT...S winds 5 to 10 kt. Waves 1 ft. Rain.
.WED...NE winds 5 kt. Waves less than 1 ft.
.WED NIGHT...NE winds 5 kt. Waves less than 1 ft.
.THU...E winds around 5 kt. Waves 1 ft or less. A chance of rain
after midnight.
.FRI...SW winds 5 to 10 kt...becoming NW 10 to 15 kt after midnight.
Waves 1 to 2 ft. A chance of rain in the morning. A chance of rain
through the night.

$$

ANZ538-180900-
Patapsco River including Baltimore Harbor-
1258 PM EST Mon Nov 17 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EST THIS EVENING...

.THIS AFTERNOON...NW winds 15 kt with gusts to 25 kt. Waves 2 ft.
.TONIGHT...NW winds 10 to 15 kt with gusts to 20 kt... becoming W
5 kt late. Waves 1 ft.
.TUE...W winds 5 kt. Waves flat. A chance of rain.
.TUE NIGHT...S winds 5 kt. Waves less than 1 ft. Rain.
.WED...NE winds 5 kt. Waves flat.
.WED NIGHT...NE winds around 5 kt. Waves flat.
.THU...E winds around 5 kt. Waves flat. A chance of rain after
midnight.
.FRI...SW winds 5 to 10 kt...becoming NW after midnight. Waves 1 ft.
A chance of rain in the morning. A chance of rain through the night.


$$

ANZ539-180900-
Chester River to Queenstown MD-
1258 PM EST Mon Nov 17 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EST THIS EVENING...

.THIS AFTERNOON...NW winds 15 to 20 kt with gusts to 30 kt. Waves
3 ft.
.TONIGHT...NW winds 10 to 15 kt. Gusts up to 25 kt early in the
evening. Waves 3 ft...subsiding to 1 ft after midnight.
.TUE...W winds 5 to 10 kt. Waves 1 ft. A chance of rain.
.TUE NIGHT...S winds 5 to 10 kt. Waves 1 ft. Rain.
.WED...NE winds 5 kt. Waves less than 1 ft.
.WED NIGHT...NE winds 5 kt. Waves less than 1 ft.
.THU...E winds around 5 kt. Waves flat. A chance of rain after
midnight.
.FRI...SW winds 5 to 10 kt...becoming N after midnight. Waves 1 ft.
A chance of rain in the morning. A chance of rain through the night.


$$

ANZ532-180900-
Chesapeake Bay from Sandy Point to North Beach-
1258 PM EST Mon Nov 17 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EST THIS EVENING...

.THIS AFTERNOON...NW winds 20 kt with gusts to 30 kt. Waves 3 ft.
.TONIGHT...NW winds 15 to 20 kt with gusts to 25 kt... diminishing
to 10 kt after midnight. Waves 3 ft...subsiding to 1 ft after
midnight.
.TUE...W winds 5 to 10 kt. Waves 1 ft. A chance of rain.
.TUE NIGHT...S winds 5 to 10 kt. Waves 1 ft. Rain.
.WED...NE winds 5 to 10 kt. Waves 1 ft.
.WED NIGHT...NE winds 5 to 10 kt. Waves 1 ft.
.THU...E winds around 5 kt...becoming S after midnight. Waves 1 ft
or less. A chance of rain after midnight.
.FRI...SW winds 10 to 15 kt...becoming NW after midnight. Waves 1 to
2 ft. A chance of rain in the morning. A chance of rain through the
night.

$$

ANZ540-180900-
Eastern Bay-
1258 PM EST Mon Nov 17 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EST THIS EVENING...

.THIS AFTERNOON...NW winds 20 kt with gusts to 30 kt. Waves 2 ft.
.TONIGHT...NW winds 10 to 15 kt. Gusts up to 25 kt. Waves 1 to 2 ft.
.TUE...W winds 5 to 10 kt. Waves 1 ft. A chance of rain.
.TUE NIGHT...S winds 5 to 10 kt. Waves 1 ft. Rain.
.WED...NE winds 5 kt. Waves less than 1 ft.
.WED NIGHT...NE winds 5 kt. Waves less than 1 ft.
.THU...E winds around 5 kt. Waves flat. A chance of rain after
midnight.
.FRI...SW winds 5 to 10 kt...becoming N 10 to 15 kt after midnight.
Waves 1 ft. A chance of rain in the morning. A chance of rain
through the night.

$$

ANZ533-180900-
Chesapeake Bay from North Beach to Drum Point-
1258 PM EST Mon Nov 17 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EST THIS EVENING...

.THIS AFTERNOON...NW winds 20 kt with gusts to 25 kt. Waves 3 ft.
.TONIGHT...NW winds 15 to 20 kt with gusts to 25 kt... diminishing
to 10 kt after midnight. Waves 2 to 3 ft.
.TUE...W winds 5 to 10 kt...becoming S late. Waves 1 ft or less. A
chance of rain.
.TUE NIGHT...S winds 5 to 10 kt. Waves 1 ft. Rain.
.WED...NW winds 5 to 10 kt. Waves 1 ft.
.WED NIGHT...NE winds 5 to 10 kt. Waves 1 ft.
.THU...E winds around 5 kt...becoming S after midnight. Waves 1 ft
or less.
.FRI...SW winds 10 to 15 kt...becoming N after midnight. Waves 1 to
2 ft. A chance of rain in the morning. A chance of rain through the
night.

$$

ANZ541-180900-
Choptank River to Cambridge MD and the Little Choptank River-
1258 PM EST Mon Nov 17 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EST THIS EVENING...

.THIS AFTERNOON...NW winds 20 kt with gusts to 25 kt. Waves 3 ft.
.TONIGHT...NW winds 15 to 20 kt with gusts to 25 kt... diminishing
to 5 to 10 kt late. Waves 1 to 2 ft.
.TUE...W winds 5 to 10 kt. Waves 1 ft. A chance of rain.
.TUE NIGHT...S winds 5 to 10 kt. Waves 1 ft. Rain.
.WED...N winds 5 to 10 kt. Waves 1 ft.
.WED NIGHT...NE winds 5 to 10 kt. Waves 1 ft.
.THU...E winds around 5 kt...becoming S after midnight. Waves 1 ft
or less.
.FRI...SW winds 10 to 15 kt...becoming N after midnight. Waves 1 ft.
A chance of rain in the morning. A chance of rain through the night.


$$

ANZ542-180900-
Patuxent River to Broomes Island MD-
1258 PM EST Mon Nov 17 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EST THIS EVENING...

.THIS AFTERNOON...NW winds 15 kt with gusts to 25 kt. Waves 1 ft.
.TONIGHT...NW winds 5 to 10 kt. Gusts up to 20 kt in the evening.
Waves 1 ft.
.TUE...W winds 5 kt. Waves less than 1 ft. A chance of rain.
.TUE NIGHT...S winds 5 to 10 kt. Waves 1 ft. Rain.
.WED...NW winds 5 kt. Waves less than 1 ft.
.WED NIGHT...NE winds 5 kt. Waves less than 1 ft.
.THU...E winds around 5 kt. Waves 1 ft.
.FRI...SW winds 5 to 10 kt...becoming N after midnight. Waves 1 ft.
A chance of rain in the morning. A chance of rain through the night.


$$

ANZ534-180900-
Chesapeake Bay from Drum Point to Smith Point-
1258 PM EST Mon Nov 17 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EST THIS EVENING...

.THIS AFTERNOON...NW winds 20 kt with gusts to 30 kt. Waves 4 ft.
.TONIGHT...NW winds 15 to 20 kt. Gusts up to 25 kt early in the
evening. Waves 2 to 3 ft.
.TUE...NW winds 5 to 10 kt...becoming S late. Waves 1 ft. A chance
of rain.
.TUE NIGHT...S winds 10 to 15 kt. Waves 1 to 2 ft. Rain.
.WED...W winds 5 to 10 kt...becoming N in the afternoon. Waves 1 ft.
.WED NIGHT...NE winds 5 to 10 kt. Waves 1 ft.
.THU...NE winds 5 to 10 kt...becoming S after midnight. Waves 1 ft
or less.
.FRI...SW winds 10 to 15 kt...becoming NW after midnight. Waves 1 to
2 ft. A chance of rain through the night.

$$

ANZ543-180900-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
1258 PM EST Mon Nov 17 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EST THIS EVENING...

.THIS AFTERNOON...NW winds 20 kt with gusts to 30 kt. Waves 2 ft.
.TONIGHT...NW winds 15 to 20 kt. Gusts up to 25 kt early in the
evening. Waves 1 to 2 ft.
.TUE...NW winds 5 to 10 kt...becoming SW late. Waves 1 ft.
.TUE NIGHT...S winds 5 to 10 kt. Waves 1 ft. Rain.
.WED...W winds 5 to 10 kt...becoming N in the afternoon. Waves 1 ft.
.WED NIGHT...NE winds 5 to 10 kt. Waves 1 ft.
.THU...NE winds 5 to 10 kt...becoming SE after midnight. Waves 1 ft
or less.
.FRI...SW winds 10 to 15 kt...becoming NW after midnight. Waves
1 ft. A chance of rain through the night.

$$