501
FZUS51 KLWX 131735
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
1235 PM 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.

ANZ500-140900-
1235 PM EST Thu Nov 13 2025

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

High pressure will build south of the area through Friday night. 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 be
needed Saturday night through Monday.

$$

ANZ535-140900-
Tidal Potomac from Key Bridge to Indian Head-
1235 PM EST Thu Nov 13 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 PM EST THIS AFTERNOON...

.THIS AFTERNOON...NW winds 15 kt with gusts to 25 kt. Waves 1 ft.
.TONIGHT...W winds 5 to 10 kt. Waves 1 ft.
.FRI...W winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...W winds around 5 kt. Waves 1 ft.
.SAT...SE winds around 5 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 ft.
.MON...NW winds 10 to 15 kt...diminishing to 5 kt after midnight.
Waves 1 ft.

$$

ANZ536-140900-
Tidal Potomac from Indian Head to Cobb Island-
1235 PM EST Thu Nov 13 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 PM EST THIS AFTERNOON...

.THIS AFTERNOON...NW winds 15 kt with gusts to 25 kt. Waves 1 to
2 ft.
.TONIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.FRI...W winds 5 kt. Waves less than 1 ft.
.FRI NIGHT...W winds around 5 kt. Waves 1 ft.
.SAT...E winds around 5 kt...becoming S in the afternoon. 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...diminishing to 5 kt after midnight.
Waves 1 ft.

$$

ANZ537-140900-
Tidal Potomac from Cobb Island to Smith Point-
1235 PM EST Thu Nov 13 2025

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

.THIS AFTERNOON...NW winds 15 to 20 kt with gusts to 25 kt. Waves
2 to 3 ft.
.TONIGHT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.FRI...W winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...W winds 5 kt. Waves less than 1 ft.
.SAT...NE winds 5 kt...becoming S in the afternoon. Waves 1 ft.
.SAT NIGHT...SW winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.SUN...W winds 15 to 20 kt...becoming NW. Waves 2 to 3 ft.
.MON...NW winds 10 to 15 kt. Waves 1 to 2 ft.

$$

ANZ530-140900-
Chesapeake Bay north of Pooles Island-
1235 PM EST Thu Nov 13 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EST TONIGHT...

.THIS AFTERNOON...NW winds 15 to 20 kt with gusts to 25 kt. Waves
2 ft.
.TONIGHT...NW winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
.FRI...W winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...NW winds around 5 kt. Waves 1 ft or less.
.SAT...SE winds around 5 kt. Waves 1 ft or less.
.SAT NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
Rain likely.
.SUN...W winds 15 to 20 kt. Waves 2 ft.
.MON...W winds 15 to 20 kt...becoming NW 5 to 10 kt after midnight.
Waves 1 to 2 ft.

$$

ANZ531-140900-
Chesapeake Bay from Pooles Island to Sandy Point-
1235 PM EST Thu Nov 13 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EST TONIGHT...

.THIS AFTERNOON...NW winds 20 kt with gusts to 25 kt. Waves 3 ft.
.TONIGHT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.FRI...W winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...NW winds 5 kt. Waves less than 1 ft.
.SAT...E winds 5 kt...becoming S in the afternoon. Waves 1 ft or
less.
.SAT NIGHT...SW winds 15 to 20 kt. Waves 2 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.

$$

ANZ538-140900-
Patapsco River including Baltimore Harbor-
1235 PM EST Thu Nov 13 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EST TONIGHT...

.THIS AFTERNOON...NW winds 15 kt with gusts to 25 kt. Waves 1 to
2 ft.
.TONIGHT...W winds 5 to 10 kt. Gusts up to 20 kt until early
morning. Waves 1 ft.
.FRI...W winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...NW winds 5 kt. Waves flat.
.SAT...SE winds around 5 kt. Waves 1 ft or less.
.SAT NIGHT...SW winds 5 to 10 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.

$$

ANZ539-140900-
Chester River to Queenstown MD-
1235 PM EST Thu Nov 13 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EST TONIGHT...

.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 2 ft.
.FRI...W winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...NW winds 5 kt. Waves less than 1 ft.
.SAT...E winds 5 kt...becoming S in the afternoon. 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 10 to 15 kt. Waves 2 to 3 ft... subsiding to 1 ft
after midnight.

$$

ANZ532-140900-
Chesapeake Bay from Sandy Point to North Beach-
1235 PM EST Thu Nov 13 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EST TONIGHT...

.THIS AFTERNOON...NW winds 20 kt with gusts to 30 kt. Waves 3 ft.
.TONIGHT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft.
.FRI...W winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...NW winds 5 kt. Waves less than 1 ft.
.SAT...E winds 5 kt...becoming S in the afternoon. Waves 1 ft.
.SAT NIGHT...SW winds 15 to 20 kt. Waves 3 ft. A chance of rain.
.SUN...W winds 20 to 25 kt. Waves 2 to 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.

$$

ANZ540-140900-
Eastern Bay-
1235 PM EST Thu Nov 13 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EST TONIGHT...

.THIS AFTERNOON...NW winds 15 to 20 kt with gusts to 25 kt. Waves
2 ft.
.TONIGHT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft.
.FRI...W winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...NW winds 5 kt. Waves less than 1 ft.
.SAT...E winds 5 kt...becoming S in the afternoon. Waves 1 ft or
less.
.SAT NIGHT...SW winds 15 to 20 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.

$$

ANZ533-140900-
Chesapeake Bay from North Beach to Drum Point-
1235 PM EST Thu Nov 13 2025

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

.THIS AFTERNOON...NW winds 20 kt with gusts to 25 kt. Waves 3 ft.
.TONIGHT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.FRI...W winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.SAT...E winds 5 kt...becoming S 10 to 15 kt in the afternoon. 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...NW winds 15 to 20 kt...diminishing to 10 kt after midnight.
Waves 2 to 3 ft...subsiding to 1 ft after midnight.

$$

ANZ541-140900-
Choptank River to Cambridge MD and the Little Choptank River-
1235 PM EST Thu Nov 13 2025

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

.THIS AFTERNOON...NW winds 20 kt with gusts to 25 kt. Waves 3 ft.
.TONIGHT...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...NW winds 5 kt. Waves less than 1 ft.
.SAT...E winds 5 kt...becoming S in the afternoon. Waves 1 ft.
.SAT NIGHT...SW winds 15 to 20 kt with gusts 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.

$$

ANZ542-140900-
Patuxent River to Broomes Island MD-
1235 PM EST Thu Nov 13 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EST TONIGHT...

.THIS AFTERNOON...NW winds 15 kt with gusts to 25 kt. Waves 1 ft.
.TONIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.FRI...W winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...W winds 5 kt. Waves less than 1 ft.
.SAT...E winds 5 kt...becoming S in the afternoon. 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 10 to 15 kt. Waves 1 ft.
.MON...NW winds 10 to 15 kt...diminishing to 5 kt after midnight.
Waves 1 ft.

$$

ANZ534-140900-
Chesapeake Bay from Drum Point to Smith Point-
1235 PM EST Thu Nov 13 2025

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

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

$$

ANZ543-140900-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
1235 PM EST Thu Nov 13 2025

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

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

$$