376
FZUS51 KLWX 271157
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
657 AM EST Thu Nov 27 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.

ANZ500-272100-
657 AM EST Thu Nov 27 2025

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

Low pressure will linger over southeastern Canada while high
pressure builds across the Midwest and Tennessee Valley through
Friday. High pressure will move overhead Saturday, then move
offshore Sunday into early next week as the next systems approach
from the west. Small Craft Advisories will likely be needed into
Saturday morning.

$$

ANZ535-272100-
Tidal Potomac from Key Bridge to Indian Head-
657 AM EST Thu Nov 27 2025

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

.TODAY...W winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.TONIGHT...W winds 10 kt. Waves 1 ft.
.FRI...W winds 10 to 15 kt with gusts to 25 kt. Waves 1 ft.
.FRI NIGHT...W winds 10 to 15 kt. Gusts up to 25 kt in the evening.
Waves 1 ft.
.SAT...W winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...S winds 5 kt. Waves less than 1 ft.
.SUN...SW winds 5 to 10 kt...becoming NW after midnight. Waves 1 ft.
A chance of rain.
.MON...N winds 5 to 10 kt. Waves 1 ft. A chance of rain after
midnight.

$$

ANZ536-272100-
Tidal Potomac from Indian Head to Cobb Island-
657 AM EST Thu Nov 27 2025

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

.TODAY...W winds 10 kt with gusts to 20 kt. Waves 1 ft.
.TONIGHT...W winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.FRI...W winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.FRI NIGHT...W winds 10 to 15 kt. Gusts up to 25 kt in the evening.
Waves 1 to 2 ft.
.SAT...W winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...S winds 5 kt. Waves less than 1 ft.
.SUN...SW winds 5 to 10 kt...becoming NW after midnight. Waves 1 ft.
A chance of rain through the day, then rain likely in the evening. A
chance of rain after midnight.
.MON...N winds 5 to 10 kt. Waves 1 ft. A chance of rain after
midnight.

$$

ANZ537-272100-
Tidal Potomac from Cobb Island to Smith Point-
657 AM EST Thu Nov 27 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.TODAY...W winds 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.TONIGHT...W winds 15 to 20 kt with gusts to 25 kt. Waves 2 to 3 ft.
.FRI...W winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft.
.FRI NIGHT...NW winds 15 to 20 kt. Gusts up to 30 kt...diminishing
to 20 kt after midnight. Waves 2 to 3 ft.
.SAT...NW winds 10 to 15 kt. Gusts up to 20 kt in the morning. Waves
1 to 2 ft.
.SAT NIGHT...S winds 5 to 10 kt. Waves 1 ft or less.
.SUN...S winds 10 to 15 kt...becoming NW after midnight. Waves 1 to
2 ft. A chance of rain in the afternoon. Rain likely in the evening,
then a chance of rain after midnight.
.MON...N winds 10 to 15 kt...becoming NE 5 to 10 kt after midnight.
Waves 1 to 2 ft. A chance of rain after midnight.

$$

ANZ530-272100-
Chesapeake Bay north of Pooles Island-
657 AM EST Thu Nov 27 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.TODAY...W winds 15 kt with gusts to 25 kt. Waves 1 to 2 ft.
.TONIGHT...W winds 10 to 15 kt with gusts to 25 kt. Waves 1 to 2 ft.
.FRI...W winds 15 to 20 kt with gusts to 30 kt. Waves 2 ft.
.FRI NIGHT...W winds 15 to 20 kt. Gusts up to 30 kt... diminishing
to 20 kt after midnight. Waves 1 to 2 ft.
.SAT...W winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...SE winds 5 to 10 kt. Waves 1 ft.
.SUN...S winds 10 to 15 kt...becoming NW after midnight. Waves 1 ft.
Rain likely through the night. A chance of rain after midnight.
.MON...NW winds 10 to 15 kt...becoming N 5 to 10 kt. Waves 1 ft.

$$

ANZ531-272100-
Chesapeake Bay from Pooles Island to Sandy Point-
657 AM EST Thu Nov 27 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.TODAY...W winds 15 to 20 kt with gusts to 25 kt. Waves 2 to 3 ft.
.TONIGHT...W winds 15 to 20 kt with gusts to 25 kt. Waves 2 to 3 ft.
.FRI...W winds 20 to 25 kt with gusts to 30 kt. Waves 3 ft.
.FRI NIGHT...W winds 15 to 20 kt. Gusts up to 30 kt... diminishing
to 20 kt after midnight. Waves 2 to 3 ft.
.SAT...NW winds 10 to 15 kt...becoming W 5 to 10 kt in the
afternoon. Waves 1 to 2 ft.
.SAT NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.SUN...S winds 10 to 15 kt...becoming NW after midnight. Waves 1 to
2 ft. A chance of rain in the morning, then rain likely through the
night. A chance of rain after midnight.
.MON...NW winds 10 to 15 kt...becoming NE 5 to 10 kt. Waves 1 to
2 ft. A chance of rain and snow after midnight.

$$

ANZ538-272100-
Patapsco River including Baltimore Harbor-
657 AM EST Thu Nov 27 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.TODAY...W winds 15 kt with gusts to 20 kt. Waves 1 ft.
.TONIGHT...W winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.FRI...W winds 15 to 20 kt with gusts to 30 kt. Waves 2 ft.
.FRI NIGHT...W winds 15 to 20 kt with gusts to 25 kt. Waves 1 to
2 ft.
.SAT...W winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...S winds 5 to 10 kt. Waves 1 ft or less.
.SUN...SW winds 5 to 10 kt...becoming NW after midnight. Waves 1 ft.
A chance of rain in the morning, then rain likely in the afternoon.
A chance of rain through the night.
.MON...N winds 5 to 10 kt. Waves 1 ft or less. A chance of rain and
snow after midnight.

$$

ANZ539-272100-
Chester River to Queenstown MD-
657 AM EST Thu Nov 27 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.TODAY...W winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.
.TONIGHT...W winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.
.FRI...W winds 20 to 25 kt with gusts to 30 kt. Waves 3 ft.
.FRI NIGHT...W winds 15 to 20 kt. Gusts up to 30 kt... diminishing
to 20 kt after midnight. Waves 2 to 3 ft.
.SAT...W winds 10 to 15 kt. Waves 1 to 2 ft.
.SAT NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.SUN...SW winds 10 to 15 kt...becoming NW after midnight. Waves 1 to
2 ft. A chance of rain through the day, then rain likely in the
evening. A chance of rain after midnight.
.MON...NW winds 10 to 15 kt...becoming NE 5 to 10 kt. Waves 1 to
2 ft. A chance of rain and snow after midnight.

$$

ANZ532-272100-
Chesapeake Bay from Sandy Point to North Beach-
657 AM EST Thu Nov 27 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.TODAY...W winds 15 kt with gusts to 25 kt. Waves 2 ft.
.TONIGHT...W winds 15 to 20 kt with gusts to 25 kt. Waves 2 to 3 ft.
.FRI...W winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft.
.FRI NIGHT...W winds 15 to 20 kt. Gusts up to 30 kt... diminishing
to 20 kt after midnight. Waves 2 to 3 ft.
.SAT...W winds 10 to 15 kt. Waves 1 to 2 ft.
.SAT NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.SUN...S winds 10 to 15 kt...becoming NW 15 to 20 kt after midnight.
Waves 1 to 2 ft. A chance of rain in the afternoon. Rain likely in
the evening, then a chance of rain after midnight.
.MON...NW winds 10 to 15 kt...becoming NE. Waves 1 to 2 ft. A chance
of rain after midnight.

$$

ANZ540-272100-
Eastern Bay-
657 AM EST Thu Nov 27 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.TODAY...W winds 15 kt with gusts to 25 kt. Waves 2 ft.
.TONIGHT...W winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.FRI...W winds 20 kt with gusts to 30 kt. Waves 3 ft.
.FRI NIGHT...NW winds 15 to 20 kt. Gusts up to 30 kt...diminishing
to 20 kt after midnight. Waves 2 to 3 ft.
.SAT...NW winds 10 to 15 kt. Waves 1 ft.
.SAT NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.SUN...S winds 10 to 15 kt...becoming NW after midnight. Waves 1 to
2 ft. A chance of rain in the afternoon. Rain likely in the evening,
then a chance of rain after midnight.
.MON...NW winds 10 to 15 kt...becoming NE 5 to 10 kt. Waves 1 ft. A
chance of rain after midnight.

$$

ANZ533-272100-
Chesapeake Bay from North Beach to Drum Point-
657 AM EST Thu Nov 27 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.TODAY...W winds 15 kt with gusts to 25 kt. Waves 2 to 3 ft.
.TONIGHT...W winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.
.FRI...W winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft.
.FRI NIGHT...NW winds 15 to 20 kt. Gusts up to 30 kt...diminishing
to 20 kt after midnight. Waves 3 ft.
.SAT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.SAT NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.SUN...S winds 10 to 15 kt...becoming NW 15 to 20 kt after midnight.
Waves 1 to 2 ft. A chance of rain in the afternoon. Rain likely in
the evening, then a chance of rain after midnight.
.MON...N winds 10 to 15 kt...becoming NE. Waves 1 to 2 ft. A chance
of rain after midnight.

$$

ANZ541-272100-
Choptank River to Cambridge MD and the Little Choptank River-
657 AM EST Thu Nov 27 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.TODAY...W winds 15 to 20 kt with gusts to 25 kt. Waves 2 to 3 ft.
.TONIGHT...W winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.
.FRI...W winds 20 to 25 kt with gusts to 30 kt. Waves 3 ft.
.FRI NIGHT...NW winds 15 to 20 kt. Gusts up to 30 kt in the evening.
Waves 2 to 3 ft.
.SAT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.SAT NIGHT...SE winds 5 to 10 kt. Waves 1 ft.
.SUN...S winds 10 to 15 kt...becoming NW 15 to 20 kt after midnight.
Waves 1 to 2 ft. A chance of rain in the afternoon. Rain likely in
the evening, then a chance of rain after midnight.
.MON...N winds 10 to 15 kt...becoming NE 5 to 10 kt. Waves 1 to
2 ft. A chance of rain after midnight.

$$

ANZ542-272100-
Patuxent River to Broomes Island MD-
657 AM EST Thu Nov 27 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.TODAY...W winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.TONIGHT...W winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.FRI...W winds 15 to 20 kt with gusts to 30 kt. Waves 1 ft.
.FRI NIGHT...NW winds 10 to 15 kt with gusts to 25 kt. Waves 1 ft.
.SAT...NW winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.SUN...SW winds 5 to 10 kt...becoming NW after midnight. Waves 1 ft.
A chance of rain in the afternoon. Rain likely in the evening, then
a chance of rain after midnight.
.MON...N winds 10 to 15 kt...becoming NE 5 to 10 kt after midnight.
Waves 1 ft. A chance of rain after midnight.

$$

ANZ534-272100-
Chesapeake Bay from Drum Point to Smith Point-
657 AM EST Thu Nov 27 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.TODAY...W winds 15 kt with gusts to 25 kt. Waves 2 to 3 ft.
.TONIGHT...NW winds 20 to 25 kt with gusts to 30 kt. Waves 3 ft.
.FRI...W winds 20 to 25 kt with gusts to 30 kt. Waves 4 ft.
.FRI NIGHT...NW winds 20 to 25 kt with gusts to 30 kt. Waves 3 ft.
.SAT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 2 to 3 ft.
.SAT NIGHT...SE winds 5 to 10 kt. Waves flat... building to 2 ft
after midnight.
.SUN...S winds 10 to 15 kt...becoming NW 15 to 20 kt after midnight.
Waves 2 to 3 ft. A chance of rain in the afternoon. Rain likely in
the evening, then a chance of rain after midnight.
.MON...N winds 15 to 20 kt...becoming NE 10 to 15 kt after midnight.
Waves 2 to 3 ft. A chance of rain after midnight.

$$

ANZ543-272100-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
657 AM EST Thu Nov 27 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.TODAY...W winds 15 kt with gusts to 25 kt. Waves 1 to 2 ft.
.TONIGHT...NW winds 20 to 25 kt with gusts to 30 kt. Waves 2 ft.
.FRI...W winds 20 to 25 kt with gusts to 30 kt. Waves 3 ft.
.FRI NIGHT...NW winds 20 to 25 kt with gusts to 30 kt. Waves 2 to
3 ft.
.SAT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.SAT NIGHT...SE winds 5 to 10 kt. Waves 1 ft or less.
.SUN...S winds 10 to 15 kt...becoming NW 15 to 20 kt after midnight.
Waves 1 to 2 ft. A chance of rain in the afternoon. Rain likely in
the evening, then a chance of rain after midnight.
.MON...N winds 15 to 20 kt...becoming NE 10 to 15 kt after midnight.
Waves 1 to 2 ft. A chance of rain after midnight.

$$