679
FZUS51 KLWX 130540
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
1240 AM EST Thu Nov 13 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.

ANZ500-131845-
1240 AM EST Thu Nov 13 2025

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

Behind a progressive clipper-like system, high pressure returns
Friday and into the weekend. A warm front crosses the region by
Saturday with the attendant cold front moving through on Sunday
morning. A secondary cold front tracks through by Monday. Small
Craft Advisories will likely need to be extended into tonight, with
additional advisories potentially needed during portions of the
weekend and into Monday.

$$

ANZ535-131845-
Tidal Potomac from Key Bridge to Indian Head-
1240 AM EST Thu Nov 13 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM EST THIS MORNING THROUGH
THIS AFTERNOON...

.OVERNIGHT...W winds 10 kt. Waves 1 ft.
.THU...W winds 10 to 15 kt. Gusts up to 25 kt in the late morning
and afternoon. Waves 1 ft.
.THU NIGHT...W winds 5 to 10 kt. Waves 1 ft.
.FRI...W winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...N winds around 5 kt. Waves 1 ft.
.SAT...SE winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. A
chance of rain.
.SUN...W winds 15 to 20 kt. Waves 1 to 2 ft.
.MON...NW winds 10 to 15 kt...diminishing to 5 kt after midnight.
Waves 1 ft.

$$

ANZ536-131845-
Tidal Potomac from Indian Head to Cobb Island-
1240 AM EST Thu Nov 13 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM EST THIS MORNING THROUGH
THIS AFTERNOON...

.OVERNIGHT...W winds 10 kt. Waves 1 ft.
.THU...W winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.THU NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.FRI...W winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...N winds around 5 kt. Waves 1 ft.
.SAT...SE winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...SW winds 15 to 20 kt. Waves 1 to 2 ft. A chance of
rain.
.SUN...W winds 15 to 20 kt. Waves 2 to 3 ft...subsiding to 1 ft
after midnight.
.MON...NW winds 10 to 15 kt...becoming N 5 kt after midnight. Waves
1 ft.

$$

ANZ537-131845-
Tidal Potomac from Cobb Island to Smith Point-
1240 AM EST Thu Nov 13 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON...

.OVERNIGHT...NW winds 15 kt with gusts to 25 kt. Waves 2 ft.
.THU...W winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.THU NIGHT...NW winds 10 to 15 kt. Waves 1 to 2 ft.
.FRI...NW winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.SAT...SE winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...SW winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft. A
chance of rain.
.SUN...W winds 15 to 20 kt...becoming NW. Waves 2 ft.
.MON...NW winds 10 to 15 kt...becoming N 5 to 10 kt after midnight.
Waves 1 to 2 ft.

$$

ANZ530-131845-
Chesapeake Bay north of Pooles Island-
1240 AM EST Thu Nov 13 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON...

.OVERNIGHT...W winds 15 kt with gusts to 20 kt. Waves 1 ft.
.THU...W winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.THU NIGHT...NW winds 10 to 15 kt. Waves 1 ft.
.FRI...NW winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...N winds 5 kt. Waves less than 1 ft.
.SAT...W winds around 5 kt. Waves 1 ft.
.SAT NIGHT...SW winds 15 to 20 kt. Waves 2 ft. Rain likely.
.SUN...W winds 15 to 20 kt. Waves 2 ft. A chance of rain in the
morning.
.MON...W winds 15 to 20 kt...becoming NW 5 to 10 kt after midnight.
Waves 1 to 2 ft.

$$

ANZ531-131845-
Chesapeake Bay from Pooles Island to Sandy Point-
1240 AM EST Thu Nov 13 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON...

.OVERNIGHT...W winds 15 kt with gusts to 25 kt. Waves 2 ft.
.THU...W winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.THU NIGHT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft.
.FRI...NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.FRI NIGHT...N winds 5 to 10 kt. Waves 1 ft.
.SAT...SE winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...SW winds 15 to 20 kt. Waves 2 to 3 ft. Rain likely.
.SUN...W winds 20 to 25 kt. Waves 3 ft.
.MON...NW winds 15 to 20 kt...diminishing to 10 kt after midnight.
Waves 2 to 3 ft...subsiding to 1 ft after midnight.

$$

ANZ538-131845-
Patapsco River including Baltimore Harbor-
1240 AM EST Thu Nov 13 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM EST THIS MORNING THROUGH
THIS AFTERNOON...

.OVERNIGHT...W winds 10 kt with gusts to 20 kt. Waves 1 ft.
.THU...W winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.THU NIGHT...W winds 5 to 10 kt. Waves 1 ft.
.FRI...W winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...N winds around 5 kt. Waves 1 ft or less.
.SAT...SE winds 5 to 10 kt. Waves 1 ft or less.
.SAT NIGHT...SW winds 5 to 10 kt. Waves 1 ft. Rain likely.
.SUN...W winds 10 to 15 kt. Waves 1 to 2 ft.
.MON...W winds 10 to 15 kt...becoming NW 5 kt after midnight. Waves
1 ft.

$$

ANZ539-131845-
Chester River to Queenstown MD-
1240 AM EST Thu Nov 13 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON...

.OVERNIGHT...W winds 15 kt with gusts to 25 kt. Waves 2 ft.
.THU...W winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.THU NIGHT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.FRI...NW winds 10 kt. Waves 1 to 2 ft.
.FRI NIGHT...N winds 5 kt. Waves less than 1 ft.
.SAT...SE winds 5 to 10 kt. Waves 1 ft or less.
.SAT NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A
chance of rain.
.SUN...W winds 15 to 20 kt. Waves 3 ft.
.MON...NW winds 15 to 20 kt...diminishing to 5 to 10 kt after
midnight. Waves 2 to 3 ft...subsiding to 1 ft after midnight.

$$

ANZ532-131845-
Chesapeake Bay from Sandy Point to North Beach-
1240 AM EST Thu Nov 13 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON...

.OVERNIGHT...W winds 15 kt with gusts to 25 kt. Waves 2 ft.
.THU...W winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.THU NIGHT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft.
.FRI...NW winds 10 kt. Waves 1 ft.
.FRI NIGHT...N winds 5 to 10 kt. Waves 1 ft.
.SAT...SE winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...SW winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft. A
chance of rain.
.SUN...W winds 20 to 25 kt. Waves 3 ft.
.MON...W winds 20 to 25 kt...becoming NW 10 to 15 kt. Waves 2 to
3 ft...subsiding to 1 ft after midnight.

$$

ANZ540-131845-
Eastern Bay-
1240 AM EST Thu Nov 13 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON...

.OVERNIGHT...W winds 15 kt with gusts to 25 kt. Waves 2 ft.
.THU...W winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft.
.THU NIGHT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.FRI...NW winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...N winds 5 to 10 kt. Waves 1 ft.
.SAT...SE winds 5 to 10 kt. Waves 1 ft or less.
.SAT NIGHT...SW winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft. A
chance of rain.
.SUN...W winds 15 to 20 kt. Waves 2 ft.
.MON...NW winds 15 to 20 kt...diminishing to 5 to 10 kt after
midnight. Waves 1 to 2 ft.

$$

ANZ533-131845-
Chesapeake Bay from North Beach to Drum Point-
1240 AM EST Thu Nov 13 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON...

.OVERNIGHT...W winds 20 kt with gusts to 25 kt. Waves 3 ft.
.THU...W winds 15 to 20 kt with gusts to 25 kt. Waves 2 to 3 ft.
.THU NIGHT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.FRI...NW winds 5 to 10 kt. Waves 1 to 2 ft.
.FRI NIGHT...N winds 5 to 10 kt. Waves 1 ft.
.SAT...SE winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...SW winds 20 to 25 kt. Waves 3 ft. A chance of rain.
.SUN...W winds 20 to 25 kt. Waves 3 ft.
.MON...NW winds 15 to 20 kt. Waves 2 to 3 ft.

$$

ANZ541-131845-
Choptank River to Cambridge MD and the Little Choptank River-
1240 AM EST Thu Nov 13 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON...

.OVERNIGHT...W winds 20 kt with gusts to 25 kt. Waves 2 ft.
.THU...NW winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.THU NIGHT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.FRI...NW winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...N winds 5 to 10 kt. Waves 1 ft.
.SAT...SE winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...SW winds 20 to 25 kt. Waves 2 to 3 ft. A chance of
rain.
.SUN...W winds 20 to 25 kt. Waves 3 ft.
.MON...NW winds 15 to 20 kt...diminishing to 5 to 10 kt after
midnight. Waves 2 to 3 ft...subsiding to 1 ft after midnight.

$$

ANZ542-131845-
Patuxent River to Broomes Island MD-
1240 AM EST Thu Nov 13 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM EST THIS MORNING THROUGH
THIS AFTERNOON...

.OVERNIGHT...W winds 10 kt with gusts to 20 kt. Waves 1 ft.
.THU...W winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.THU NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.FRI...NW winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...N winds 5 kt. Waves less than 1 ft.
.SAT...SE winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. A
chance of rain.
.SUN...W winds 15 to 20 kt...becoming NW 10 to 15 kt. Waves 1 ft.
.MON...NW winds 10 to 15 kt. Waves 1 ft.

$$

ANZ534-131845-
Chesapeake Bay from Drum Point to Smith Point-
1240 AM EST Thu Nov 13 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON...

.OVERNIGHT...NW winds 20 kt with gusts to 30 kt. Waves 3 ft.
.THU...NW winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.
.THU NIGHT...NW winds 15 to 20 kt. Waves 3 ft.
.FRI...NW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.FRI NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.SAT...E winds 5 to 10 kt...becoming S in the afternoon. Waves 1 ft.
.SAT NIGHT...SW winds 20 to 25 kt. Waves 3 ft. A chance of rain.
.SUN...SW winds 20 kt...becoming NW. Waves 4 ft.
.MON...NW winds 20 to 25 kt...diminishing to 10 to 15 kt. Waves 2 to
3 ft.

$$

ANZ543-131845-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
1240 AM EST Thu Nov 13 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON...

.OVERNIGHT...NW winds 20 kt with gusts to 30 kt. Waves 2 ft.
.THU...NW winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.THU NIGHT...NW winds 15 to 20 kt. Waves 2 ft.
.FRI...NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.FRI NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.SAT...NE winds 5 to 10 kt...becoming S in the afternoon. Waves
1 ft.
.SAT NIGHT...SW winds 20 to 25 kt with gusts to 30 kt. Waves 2 to
3 ft. A chance of rain.
.SUN...SW winds 20 kt...becoming NW. Waves 2 to 3 ft.
.MON...NW winds 20 to 25 kt...diminishing to 10 to 15 kt. Waves 1 to
2 ft.

$$