275
FZUS51 KLWX 300835
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
435 AM EDT Sat Aug 30 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.

ANZ500-302300-
435 AM EDT Sat Aug 30 2025

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

High pressure will build north of the area this weekend and will
continue to influence the area into next week. The next front
approaches by late next week. A Small Craft Advisory may be needed
for portions of the waters by Wednesday night.

$$

ANZ535-302300-
Tidal Potomac from Key Bridge to Indian Head-
435 AM EDT Sat Aug 30 2025

.REST OF THE OVERNIGHT...N winds 5 kt. Waves less than 1 ft.
.TODAY...N winds 5 kt. Waves less than 1 ft.
.TONIGHT...NE winds around 5 kt. Waves 1 ft or less.
.SUN...NE winds around 5 kt. Waves 1 ft.
.SUN NIGHT...NE winds around 5 kt. Waves 1 ft or less.
.MON...NE winds around 5 kt. Waves 1 ft.
.MON NIGHT...E winds around 5 kt. Waves 1 ft.
.TUE...SE winds around 5 kt. Waves 1 ft.
.WED...SE winds 5 to 10 kt. Waves 1 ft.

$$

ANZ536-302300-
Tidal Potomac from Indian Head to Cobb Island-
435 AM EDT Sat Aug 30 2025

.REST OF THE OVERNIGHT...N winds 10 kt. Waves 1 ft.
.TODAY...N winds 5 to 10 kt. Waves 1 ft.
.TONIGHT...NE winds around 5 kt. Waves 1 ft.
.SUN...NE winds around 5 kt. Waves 1 ft.
.SUN NIGHT...NE winds around 5 kt. Waves 1 ft.
.MON...NE winds around 5 kt. Waves 1 ft.
.MON NIGHT...E winds around 5 kt. Waves 1 ft.
.TUE...E winds around 5 kt. Waves 1 ft.
.WED...SE winds 5 to 10 kt. Waves 1 ft.

$$

ANZ537-302300-
Tidal Potomac from Cobb Island to Smith Point-
435 AM EDT Sat Aug 30 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM EDT THIS MORNING...

.REST OF THE OVERNIGHT...N winds 15 kt with gusts to 20 kt. Waves
2 ft.
.TODAY...N winds 5 to 10 kt. Gusts up to 20 kt until late afternoon.
Waves 1 to 2 ft.
.TONIGHT...NE winds around 5 kt. Waves 1 ft.
.SUN...NE winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...NE winds 5 kt. Waves less than 1 ft.
.MON...NE winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...NE winds 5 to 10 kt. Waves 1 ft.
.TUE...NE winds 5 to 10 kt...becoming SE. Waves 1 ft.
.WED...SE winds 5 to 10 kt. Waves 1 ft.

$$

ANZ530-302300-
Chesapeake Bay north of Pooles Island-
435 AM EDT Sat Aug 30 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT EARLY THIS
MORNING...

.REST OF THE OVERNIGHT...N winds 10 kt with gusts to 20 kt. Waves
1 ft.
.TODAY...N winds 5 to 10 kt. Waves 1 ft.
.TONIGHT...N winds 5 kt. Waves less than 1 ft.
.SUN...NE winds 5 kt. Waves less than 1 ft.
.SUN NIGHT...NE winds around 5 kt. Waves 1 ft.
.MON...NE winds 5 kt. Waves less than 1 ft.
.MON NIGHT...E winds around 5 kt. Waves 1 ft.
.TUE...SE winds around 5 kt. Waves 1 ft.
.WED...SE winds 5 to 10 kt. Waves 1 ft.

$$

ANZ531-302300-
Chesapeake Bay from Pooles Island to Sandy Point-
435 AM EDT Sat Aug 30 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT EARLY THIS
MORNING...

.REST OF THE OVERNIGHT...N winds 10 kt with gusts to 20 kt. Waves
2 ft.
.TODAY...N winds 5 to 10 kt. Waves 1 ft.
.TONIGHT...NE winds 5 kt. Waves less than 1 ft.
.SUN...NE winds 5 kt. Waves less than 1 ft.
.SUN NIGHT...NE winds around 5 kt. Waves 1 ft or less.
.MON...NE winds 5 kt. Waves less than 1 ft.
.MON NIGHT...E winds 5 kt. Waves less than 1 ft.
.TUE...E winds 5 kt...becoming S. Waves 1 ft or less.
.WED...S winds 5 to 10 kt. Waves 1 ft.

$$

ANZ538-302300-
Patapsco River including Baltimore Harbor-
435 AM EDT Sat Aug 30 2025

.REST OF THE OVERNIGHT...N winds 10 kt. Waves 1 ft.
.TODAY...N winds 5 to 10 kt. Waves 1 ft.
.TONIGHT...NE winds around 5 kt. Waves flat.
.SUN...NE winds 5 kt. Waves flat.
.SUN NIGHT...NE winds around 5 kt. Waves flat.
.MON...NE winds around 5 kt. Waves flat.
.MON NIGHT...E winds around 5 kt. Waves flat.
.TUE...SE winds around 5 kt. Waves flat.
.WED...S winds 5 to 10 kt. Waves 1 ft or less.

$$

ANZ539-302300-
Chester River to Queenstown MD-
435 AM EDT Sat Aug 30 2025

.REST OF THE OVERNIGHT...N winds 10 kt. Waves 2 ft.
.TODAY...N winds 5 to 10 kt. Waves 1 ft.
.TONIGHT...NE winds around 5 kt. Waves flat.
.SUN...NE winds 5 kt. Waves less than 1 ft.
.SUN NIGHT...E winds around 5 kt. Waves flat.
.MON...NE winds 5 kt. Waves flat.
.MON NIGHT...E winds around 5 kt. Waves flat.
.TUE...E winds 5 kt. Waves less than 1 ft.
.WED...SE winds 5 to 10 kt. Waves 1 ft or less.

$$

ANZ532-302300-
Chesapeake Bay from Sandy Point to North Beach-
435 AM EDT Sat Aug 30 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT EARLY THIS
MORNING...

.REST OF THE OVERNIGHT...N winds 15 kt with gusts to 20 kt. Waves
2 ft.
.TODAY...N winds 5 to 10 kt. Waves 1 to 2 ft.
.TONIGHT...NE winds around 5 kt. Waves 1 ft or less.
.SUN...NE winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...NE winds around 5 kt. Waves 1 ft or less.
.MON...NE winds 5 kt. Waves less than 1 ft.
.MON NIGHT...E winds 5 to 10 kt. Waves 1 ft.
.TUE...NE winds 5 kt...becoming S. Waves 1 ft.
.WED...SE winds 5 to 10 kt. Waves 1 to 2 ft.

$$

ANZ540-302300-
Eastern Bay-
435 AM EDT Sat Aug 30 2025

.REST OF THE OVERNIGHT...N winds 10 kt. Waves 1 ft.
.TODAY...N winds 5 to 10 kt. Waves 1 ft.
.TONIGHT...NE winds around 5 kt. Waves flat.
.SUN...NE winds 5 kt. Waves less than 1 ft.
.SUN NIGHT...E winds around 5 kt. Waves flat.
.MON...NE winds 5 kt. Waves less than 1 ft.
.MON NIGHT...E winds 5 kt. Waves less than 1 ft.
.TUE...E winds 5 kt. Waves less than 1 ft.
.WED...SE winds 5 to 10 kt. Waves 1 ft or less.

$$

ANZ533-302300-
Chesapeake Bay from North Beach to Drum Point-
435 AM EDT Sat Aug 30 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT EARLY THIS
MORNING...

.REST OF THE OVERNIGHT...N winds 15 kt with gusts to 20 kt. Waves
2 ft.
.TODAY...N winds 5 to 10 kt. Waves 1 to 2 ft.
.TONIGHT...NE winds around 5 kt. Waves 1 ft or less.
.SUN...NE winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...NE winds 5 kt. Waves less than 1 ft.
.MON...NE winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...E winds 5 to 10 kt. Waves 1 ft.
.TUE...NE winds 5 kt...becoming S. Waves 1 ft.
.WED...SE winds 5 to 10 kt. Waves 1 to 2 ft.

$$

ANZ541-302300-
Choptank River to Cambridge MD and the Little Choptank River-
435 AM EDT Sat Aug 30 2025

.REST OF THE OVERNIGHT...N winds 15 kt with gusts to 20 kt. Waves
2 ft.
.TODAY...N winds 5 to 10 kt. Waves 1 ft.
.TONIGHT...NE winds around 5 kt. Waves 1 ft or less.
.SUN...NE winds 5 kt. Waves less than 1 ft.
.SUN NIGHT...NE winds around 5 kt. Waves 1 ft or less.
.MON...NE winds 5 kt. Waves less than 1 ft.
.MON NIGHT...E winds 5 to 10 kt. Waves 1 ft.
.TUE...NE winds 5 kt...becoming SE. Waves 1 ft.
.WED...SE winds 5 to 10 kt. Waves 1 ft.

$$

ANZ542-302300-
Patuxent River to Broomes Island MD-
435 AM EDT Sat Aug 30 2025

.REST OF THE OVERNIGHT...N winds 10 kt. Waves 1 ft.
.TODAY...N winds 5 to 10 kt. Waves 1 ft.
.TONIGHT...NE winds around 5 kt. Waves 1 ft.
.SUN...NE winds 5 kt. Waves less than 1 ft.
.SUN NIGHT...NE winds around 5 kt. Waves 1 ft.
.MON...NE winds 5 kt. Waves less than 1 ft.
.MON NIGHT...E winds around 5 kt. Waves 1 ft.
.TUE...E winds 5 kt. Waves less than 1 ft.
.WED...SE winds 5 to 10 kt. Waves 1 ft.

$$

ANZ534-302300-
Chesapeake Bay from Drum Point to Smith Point-
435 AM EDT Sat Aug 30 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM EDT THIS MORNING...

.REST OF THE OVERNIGHT...N winds 15 kt with gusts to 20 kt. Waves
2 ft.
.TODAY...N winds 10 to 15 kt. Gusts up to 20 kt until late
afternoon. Waves 2 ft.
.TONIGHT...NE winds 5 kt. Waves less than 1 ft.
.SUN...NE winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...NE winds 5 to 10 kt. Waves 1 ft.
.MON...NE winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...NE winds 5 to 10 kt. Waves 1 ft.
.TUE...NE winds 5 to 10 kt...becoming SE. Waves 1 ft.
.WED...SE winds 5 to 10 kt. Waves 1 to 2 ft.

$$

ANZ543-302300-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
435 AM EDT Sat Aug 30 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM EDT THIS MORNING...

.REST OF THE OVERNIGHT...N winds 15 kt with gusts to 20 kt. Waves
2 ft.
.TODAY...N winds 10 to 15 kt with gusts to 20 kt... becoming NW 5 to
10 kt late. Waves 1 to 2 ft.
.TONIGHT...NE winds 5 to 10 kt. Waves 1 ft or less.
.SUN...NE winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...NE winds 5 to 10 kt. Waves 1 ft.
.MON...NE winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...NE winds 5 to 10 kt. Waves 1 ft.
.TUE...E winds 5 to 10 kt. Waves 1 ft.
.WED...SE winds 5 to 10 kt. Waves 1 ft.

$$