National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Coastal Waters Forecast
Issued by NWS Sterling, VA

Home |  Current Version |  Previous Version |  Text Only |  Print | Product List |  Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 
547
FZUS51 KLWX 301435
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
1034 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.

ANZ500-302000-
1034 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.

$$

ANZ535-302000-
Tidal Potomac from Key Bridge to Indian Head-
1034 AM EDT Sat Aug 30 2025

.REST OF 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.

$$

ANZ536-302000-
Tidal Potomac from Indian Head to Cobb Island-
1034 AM EDT Sat Aug 30 2025

.REST OF TODAY...N winds 5 kt. Waves less than 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.

$$

ANZ537-302000-
Tidal Potomac from Cobb Island to Smith Point-
1034 AM EDT Sat Aug 30 2025

.REST OF TODAY...N winds 5 to 10 kt. 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.

$$

ANZ530-302000-
Chesapeake Bay north of Pooles Island-
1034 AM EDT Sat Aug 30 2025

.REST OF TODAY...N winds 5 kt. Waves less than 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.

$$

ANZ531-302000-
Chesapeake Bay from Pooles Island to Sandy Point-
1034 AM EDT Sat Aug 30 2025

.REST OF 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.

$$

ANZ538-302000-
Patapsco River including Baltimore Harbor-
1034 AM EDT Sat Aug 30 2025

.REST OF TODAY...N winds 5 kt. Waves less than 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.

$$

ANZ539-302000-
Chester River to Queenstown MD-
1034 AM EDT Sat Aug 30 2025

.REST OF 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.

$$

ANZ532-302000-
Chesapeake Bay from Sandy Point to North Beach-
1034 AM EDT Sat Aug 30 2025

.REST OF 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 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.

$$

ANZ540-302000-
Eastern Bay-
1034 AM EDT Sat Aug 30 2025

.REST OF 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.

$$

ANZ533-302000-
Chesapeake Bay from North Beach to Drum Point-
1034 AM EDT Sat Aug 30 2025

.REST OF TODAY...N winds 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.

$$

ANZ541-302000-
Choptank River to Cambridge MD and the Little Choptank River-
1034 AM EDT Sat Aug 30 2025

.REST OF 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.

$$

ANZ542-302000-
Patuxent River to Broomes Island MD-
1034 AM EDT Sat Aug 30 2025

.REST OF 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.

$$

ANZ534-302000-
Chesapeake Bay from Drum Point to Smith Point-
1034 AM EDT Sat Aug 30 2025

.REST OF TODAY...N winds 10 kt. Waves 1 to 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.

$$

ANZ543-302000-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
1034 AM EDT Sat Aug 30 2025

.REST OF TODAY...N winds 10 kt. Waves 1 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.

$$