036
FZUS51 KLWX 211157
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
657 AM EST Fri Nov 21 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.

ANZ500-212100-
657 AM EST Fri Nov 21 2025

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

An area of low pressure approaching from the Midwest will track
along a front south of the waters as it stalls nearby late today
into Saturday. High pressure will return Sunday into Monday. Small
Craft Advisories may be needed Saturday.

$$

ANZ535-212100-
Tidal Potomac from Key Bridge to Indian Head-
657 AM EST Fri Nov 21 2025

.TODAY...S winds around 5 kt. Waves 1 ft or less. A slight chance of
rain this morning, then a chance of rain this afternoon.
.TONIGHT...E winds around 5 kt. Waves 1 ft or less. Rain. Vsby 1 to
3 NM.
.SAT...N winds 5 to 10 kt. Waves 1 ft. A chance of rain.
.SAT NIGHT...N winds around 5 kt. Waves 1 ft.
.SUN...W winds around 5 kt. Waves 1 ft.
.SUN NIGHT...NW winds around 5 kt. Waves 1 ft.
.MON...S winds around 5 kt. Waves 1 ft.
.TUE...S winds 5 to 10 kt. Waves 1 ft. A chance of rain in the
afternoon. Rain likely in the evening, then a chance of rain after
midnight.

$$

ANZ536-212100-
Tidal Potomac from Indian Head to Cobb Island-
657 AM EST Fri Nov 21 2025

.TODAY...S winds 5 kt. Waves less than 1 ft. A slight chance of rain
this morning, then a chance of rain this afternoon.
.TONIGHT...SE winds around 5 kt. Waves 1 ft. Rain. Vsby 1 to 3 NM.
.SAT...N winds 5 to 10 kt. Waves 1 ft. A chance of rain.
.SAT NIGHT...N winds around 5 kt. Waves 1 ft.
.SUN...W winds around 5 kt. Waves 1 ft.
.SUN NIGHT...NW winds 5 kt. Waves less than 1 ft.
.MON...SE winds around 5 kt. Waves 1 ft.
.TUE...S winds 5 to 10 kt. Waves 1 ft. A chance of rain in the
afternoon. Rain likely through the night.

$$

ANZ537-212100-
Tidal Potomac from Cobb Island to Smith Point-
657 AM EST Fri Nov 21 2025

.TODAY...S winds 5 kt. Waves flat. A slight chance of rain this
morning, then a chance of rain this afternoon.
.TONIGHT...S winds around 5 kt...becoming NE late. Waves 1 ft or
less. Rain likely. Vsby 1 to 3 NM.
.SAT...N winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A chance
of rain.
.SAT NIGHT...N winds 5 to 10 kt. Waves 1 ft.
.SUN...W winds around 5 kt. Waves 1 ft or less.
.SUN NIGHT...W winds 5 to 10 kt. Waves 1 ft.
.MON...E winds 5 kt...becoming S after midnight. Waves 1 ft.
.TUE...S winds 5 to 10 kt. Waves 1 ft. A chance of rain in the
afternoon. Rain likely through the night.

$$

ANZ530-212100-
Chesapeake Bay north of Pooles Island-
657 AM EST Fri Nov 21 2025

.TODAY...SW winds 5 kt. Waves less than 1 ft. A chance of rain this
afternoon.
.TONIGHT...NW winds around 5 kt. Waves 1 ft or less. Rain. Vsby 1 to
3 NM.
.SAT...N winds 5 to 10 kt. Waves 1 ft. A chance of rain.
.SAT NIGHT...N winds around 5 kt. Waves 1 ft.
.SUN...W winds around 5 kt. Waves 1 ft.
.SUN NIGHT...W winds 5 to 10 kt. Waves 1 ft.
.MON...S winds around 5 kt. Waves 1 ft or less.
.TUE...S winds 5 to 10 kt. Waves 1 ft. A chance of rain in the
afternoon. Rain likely in the evening, then a chance of rain after
midnight.

$$

ANZ531-212100-
Chesapeake Bay from Pooles Island to Sandy Point-
657 AM EST Fri Nov 21 2025

.TODAY...S winds 5 kt. Waves flat. A chance of rain this afternoon.
.TONIGHT...W winds around 5 kt...becoming N late. Waves 1 ft or
less. Rain. Vsby 1 to 3 NM.
.SAT...N winds 5 to 10 kt. Waves 2 ft. A chance of rain.
.SAT NIGHT...N winds 5 to 10 kt. Waves 1 ft.
.SUN...W winds 5 to 10 kt. Waves 1 ft or less.
.SUN NIGHT...W winds 5 to 10 kt. Waves 1 ft.
.MON...S winds 5 kt. Waves less than 1 ft.
.TUE...S winds 5 to 10 kt. Waves 1 ft. A chance of rain in the
afternoon. Rain likely in the evening, then a chance of rain after
midnight.

$$

ANZ538-212100-
Patapsco River including Baltimore Harbor-
657 AM EST Fri Nov 21 2025

.TODAY...S winds around 5 kt. Waves flat. A chance of rain this
afternoon.
.TONIGHT...NW winds around 5 kt. Waves flat. Rain. Vsby 1 to 3 NM.
.SAT...N winds 5 to 10 kt. Waves 1 ft. A chance of rain.
.SAT NIGHT...N winds around 5 kt. Waves 1 ft or less.
.SUN...W winds around 5 kt. Waves 1 ft or less.
.SUN NIGHT...W winds 5 kt. Waves less than 1 ft.
.MON...S winds around 5 kt. Waves flat.
.TUE...S winds 5 to 10 kt. Waves 1 ft. A chance of rain in the
afternoon. Rain likely in the evening, then a chance of rain after
midnight.

$$

ANZ539-212100-
Chester River to Queenstown MD-
657 AM EST Fri Nov 21 2025

.TODAY...S winds 5 kt. Waves flat. A chance of rain this afternoon.
.TONIGHT...W winds around 5 kt. Waves flat. Rain. Vsby 1 to 3 NM.
.SAT...N winds 5 to 10 kt. Waves 1 ft. A chance of rain.
.SAT NIGHT...N winds 5 to 10 kt. Waves 1 ft.
.SUN...W winds around 5 kt. Waves 1 ft or less.
.SUN NIGHT...W winds 5 to 10 kt. Waves 1 ft.
.MON...S winds around 5 kt. Waves 1 ft or less.
.TUE...S winds 5 to 10 kt. Waves 1 ft. A chance of rain in the
afternoon. Rain likely in the evening, then a chance of rain after
midnight.

$$

ANZ532-212100-
Chesapeake Bay from Sandy Point to North Beach-
657 AM EST Fri Nov 21 2025

.TODAY...S winds 5 kt. Waves flat. A chance of rain this afternoon.
.TONIGHT...SW winds around 5 kt...becoming NE late. Waves 1 ft or
less. Rain. Vsby 1 to 3 NM.
.SAT...N winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A chance
of rain.
.SAT NIGHT...N winds 5 to 10 kt. Waves 1 ft.
.SUN...W winds 5 kt. Waves less than 1 ft.
.SUN NIGHT...W winds 5 to 10 kt. Waves 1 ft.
.MON...NW winds 5 to 10 kt...becoming E in the afternoon and
evening, then becoming S after midnight. Waves 1 ft.
.TUE...S winds 5 to 10 kt. Waves 1 to 2 ft. A chance of rain in the
afternoon. Rain likely in the evening, then a chance of rain after
midnight.

$$

ANZ540-212100-
Eastern Bay-
657 AM EST Fri Nov 21 2025

.TODAY...S winds 5 kt. Waves flat. A chance of rain this afternoon.
.TONIGHT...SW winds around 5 kt...becoming NE late. Waves flat.
Rain. Vsby 1 to 3 NM.
.SAT...N winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft. A chance
of rain.
.SAT NIGHT...N winds 5 to 10 kt. Waves 1 ft.
.SUN...W winds 5 kt. Waves less than 1 ft.
.SUN NIGHT...W winds 5 to 10 kt. Waves 1 ft.
.MON...S winds around 5 kt. Waves 1 ft or less.
.TUE...S winds 5 to 10 kt. Waves 1 ft. A chance of rain in the
afternoon. Rain likely in the evening, then a chance of rain after
midnight.

$$

ANZ533-212100-
Chesapeake Bay from North Beach to Drum Point-
657 AM EST Fri Nov 21 2025

.TODAY...S winds 5 kt. Waves less than 1 ft. A chance of rain this
afternoon.
.TONIGHT...S winds 5 kt...becoming NE late. Waves 1 ft or less.
Rain. Vsby 1 to 3 NM.
.SAT...N winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A chance
of rain.
.SAT NIGHT...N winds 5 to 10 kt. Waves 1 to 2 ft.
.SUN...W winds 5 kt. Waves less than 1 ft.
.SUN NIGHT...W winds 5 to 10 kt. Waves 1 ft.
.MON...N winds 5 to 10 kt...becoming SE. Waves 1 ft.
.TUE...S winds 10 to 15 kt. Waves 1 to 2 ft. A chance of rain in the
afternoon. Rain likely through the night.

$$

ANZ541-212100-
Choptank River to Cambridge MD and the Little Choptank River-
657 AM EST Fri Nov 21 2025

.TODAY...S winds 5 kt. Waves flat. A chance of rain this afternoon.
.TONIGHT...S winds around 5 kt...becoming NE late. Waves 1 ft or
less. Rain. Vsby 1 to 3 NM.
.SAT...N winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A chance
of rain.
.SAT NIGHT...N winds 5 to 10 kt. Waves 1 ft.
.SUN...W winds 5 kt. Waves less than 1 ft.
.SUN NIGHT...W winds 5 to 10 kt. Waves 1 ft.
.MON...NE winds 5 kt...becoming SE after midnight. Waves 1 ft.
.TUE...S winds 10 to 15 kt. Waves 1 ft. A chance of rain in the
afternoon. Rain likely in the evening, then a chance of rain after
midnight.

$$

ANZ542-212100-
Patuxent River to Broomes Island MD-
657 AM EST Fri Nov 21 2025

.TODAY...S winds 5 kt. Waves less than 1 ft. A chance of rain this
afternoon.
.TONIGHT...S winds around 5 kt. Waves 1 ft. Rain. Vsby 1 to 3 NM.
.SAT...N winds 5 to 10 kt. Waves 1 ft. A chance of rain.
.SAT NIGHT...N winds 5 to 10 kt. Waves 1 ft.
.SUN...W winds around 5 kt. Waves 1 ft.
.SUN NIGHT...W winds 5 kt. Waves less than 1 ft.
.MON...E winds 5 kt. Waves less than 1 ft.
.TUE...S winds 5 to 10 kt. Waves 1 ft. A chance of rain in the
afternoon. Rain likely through the night.

$$

ANZ534-212100-
Chesapeake Bay from Drum Point to Smith Point-
657 AM EST Fri Nov 21 2025

.TODAY...S winds 5 kt. Waves less than 1 ft. A chance of rain this
afternoon.
.TONIGHT...S winds 5 to 10 kt...becoming E late. Waves 1 ft. Rain
likely. Vsby 1 to 3 NM.
.SAT...N winds 10 to 15 kt with gusts to 20 kt. Waves 3 ft. A chance
of rain.
.SAT NIGHT...N winds 5 to 10 kt. Waves 1 to 2 ft.
.SUN...NW winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...W winds 5 to 10 kt. Waves 1 ft.
.MON...NE winds 5 to 10 kt...becoming SE. Waves 1 ft.
.TUE...S winds 10 to 15 kt. Waves 1 to 2 ft. A chance of rain in the
afternoon. Rain likely through the night.

$$

ANZ543-212100-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
657 AM EST Fri Nov 21 2025

.TODAY...S winds 5 kt. Waves less than 1 ft. A chance of rain this
afternoon.
.TONIGHT...S winds 5 to 10 kt...becoming E late. Waves 1 ft. Rain
likely. Vsby 1 to 3 NM.
.SAT...N winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A chance
of rain.
.SAT NIGHT...N winds 5 to 10 kt. Waves 1 ft.
.SUN...NW winds 5 kt. Waves less than 1 ft.
.SUN NIGHT...W winds 5 to 10 kt. Waves 1 ft.
.MON...N winds 5 to 10 kt...becoming S in the afternoon and evening,
then becoming SE after midnight. Waves 1 ft.
.TUE...S winds 10 to 15 kt. Waves 1 to 2 ft. A chance of rain in the
afternoon. Rain likely through the night.

$$