FZUS51 KLWX 212034
CWFLWX
Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
434 PM EDT Sat Jun 21 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.
ANZ500-220800-
434 PM EDT Sat Jun 21 2025
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
A large area of high pressure will influence the area through at
least Tuesday. A frontal boundary may approach from the north by
Wednesday and Thursday. A Small Craft Advisory may be needed for
portions of the waters Sunday evening.
$$
ANZ535-220800-
Tidal Potomac from Key Bridge to Indian Head-
434 PM EDT Sat Jun 21 2025
.REST OF THIS AFTERNOON...S winds 5 kt. Waves less than 1 ft.
.TONIGHT...S winds 5 kt. Waves less than 1 ft.
.SUN...SW winds 5 kt. Waves less than 1 ft.
.SUN NIGHT...SW winds around 5 kt. Waves 1 ft.
.MON...NW winds around 5 kt. Waves 1 ft.
.MON NIGHT...W winds around 5 kt. Waves 1 ft or less.
.TUE...NW winds around 5 kt. Waves 1 ft.
.WED...NW winds around 5 kt. Waves 1 ft.
$$
ANZ536-220800-
Tidal Potomac from Indian Head to Cobb Island-
434 PM EDT Sat Jun 21 2025
.REST OF THIS AFTERNOON...S winds 5 kt. Waves less than 1 ft.
.TONIGHT...S winds 5 to 10 kt. Waves 1 ft.
.SUN...SW winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...SW winds around 5 kt. Waves 1 ft.
.MON...NW winds around 5 kt. Waves 1 ft.
.MON NIGHT...W winds around 5 kt. Waves 1 ft.
.TUE...NW winds around 5 kt. Waves 1 ft.
.WED...NW winds around 5 kt. Waves 1 ft.
$$
ANZ537-220800-
Tidal Potomac from Cobb Island to Smith Point-
434 PM EDT Sat Jun 21 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT SUNDAY...
.REST OF THIS AFTERNOON...SE winds 10 kt. Waves 1 ft.
.TONIGHT...S winds 10 to 15 kt...becoming SW late. Gusts up to
20 kt. Waves 1 to 2 ft.
.SUN...SW winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...SW winds 5 to 10 kt. Waves 1 ft.
.MON...NW winds 5 kt. Waves less than 1 ft.
.MON NIGHT...SW winds around 5 kt. Waves flat.
.TUE...NW winds 5 kt. Waves less than 1 ft.
.WED...NW winds around 5 kt. Waves 1 ft or less.
$$
ANZ530-220800-
Chesapeake Bay north of Pooles Island-
434 PM EDT Sat Jun 21 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT SUNDAY...
.REST OF THIS AFTERNOON...SW winds 10 kt. Waves 1 ft. Isolated
showers.
.TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.SUN...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.SUN NIGHT...SW winds 5 to 10 kt. Waves 1 ft.
.MON...NW winds 5 kt. Waves less than 1 ft.
.MON NIGHT...W winds 5 kt. Waves less than 1 ft.
.TUE...NW winds 5 kt. Waves less than 1 ft.
.WED...N winds around 5 kt. Waves 1 ft.
$$
ANZ531-220800-
Chesapeake Bay from Pooles Island to Sandy Point-
434 PM EDT Sat Jun 21 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT SUNDAY...
.REST OF THIS AFTERNOON...S winds 10 kt. Waves 1 ft.
.TONIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SUN...SW winds 5 to 10 kt with gusts to 20 kt. Waves 1 to 2 ft.
.SUN NIGHT...SW winds 5 to 10 kt. Waves 1 ft.
.MON...NW winds 5 kt. Waves less than 1 ft.
.MON NIGHT...W winds 5 kt. Waves less than 1 ft.
.TUE...NW winds 5 kt. Waves less than 1 ft.
.WED...N winds 5 kt. Waves less than 1 ft.
$$
ANZ538-220800-
Patapsco River including Baltimore Harbor-
434 PM EDT Sat Jun 21 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT SUNDAY...
.REST OF THIS AFTERNOON...S winds 10 kt. Waves 1 ft. Isolated
showers.
.TONIGHT...S winds 5 to 10 kt. Waves 1 ft.
.SUN...SW winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...W winds 5 to 10 kt. Waves 1 ft or less.
.MON...NW winds 5 kt. Waves flat.
.MON NIGHT...W winds around 5 kt. Waves flat.
.TUE...NW winds around 5 kt. Waves flat.
.WED...N winds around 5 kt. Waves flat.
$$
ANZ539-220800-
Chester River to Queenstown MD-
434 PM EDT Sat Jun 21 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT SUNDAY...
.REST OF THIS AFTERNOON...S winds 5 kt. Waves less than 1 ft.
.TONIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.SUN...SW winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...SW winds 5 to 10 kt. Waves 1 ft.
.MON...NW winds 5 kt. Waves flat.
.MON NIGHT...W winds around 5 kt. Waves flat.
.TUE...NW winds 5 kt. Waves less than 1 ft.
.WED...N winds around 5 kt. Waves flat.
$$
ANZ532-220800-
Chesapeake Bay from Sandy Point to North Beach-
434 PM EDT Sat Jun 21 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT SUNDAY...
.REST OF THIS AFTERNOON...S winds 10 kt. Waves 1 ft.
.TONIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SUN...SW winds 5 to 10 kt. Gusts up to 20 kt in the morning. Waves
1 to 2 ft.
.SUN NIGHT...SW winds 5 to 10 kt. Waves 1 ft.
.MON...SW winds 5 kt. Waves less than 1 ft.
.MON NIGHT...W winds 5 kt. Waves flat.
.TUE...W winds 5 kt. Waves flat.
.WED...N winds 5 kt. Waves flat.
$$
ANZ540-220800-
Eastern Bay-
434 PM EDT Sat Jun 21 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT SUNDAY...
.REST OF THIS AFTERNOON...SW winds 5 kt. Waves less than 1 ft.
.TONIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.SUN...SW winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...SW winds 5 to 10 kt. Waves 1 ft.
.MON...NW winds 5 kt. Waves flat.
.MON NIGHT...W winds around 5 kt. Waves flat.
.TUE...NW winds around 5 kt. Waves flat.
.WED...NW winds around 5 kt. Waves flat.
$$
ANZ533-220800-
Chesapeake Bay from North Beach to Drum Point-
434 PM EDT Sat Jun 21 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT SUNDAY...
.REST OF THIS AFTERNOON...S winds 10 kt. Waves 1 ft.
.TONIGHT...S winds 10 to 15 kt...becoming SW late. Gusts up to
20 kt. Waves 2 ft.
.SUN...SW winds 5 to 10 kt with gusts to 20 kt. Waves 1 to 2 ft.
.SUN NIGHT...SW winds 5 to 10 kt. Waves 1 ft.
.MON...NW winds 5 kt. Waves less than 1 ft.
.MON NIGHT...SW winds 5 kt. Waves flat.
.TUE...NW winds 5 kt. Waves less than 1 ft.
.WED...NW winds 5 kt. Waves less than 1 ft.
$$
ANZ541-220800-
Choptank River to Cambridge MD and the Little Choptank River-
434 PM EDT Sat Jun 21 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT SUNDAY...
.REST OF THIS AFTERNOON...S winds 10 kt. Waves 1 ft.
.TONIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.SUN...SW winds 5 to 10 kt with gusts to 20 kt. Waves 1 to 2 ft.
.SUN NIGHT...SW winds 5 to 10 kt. Waves 1 ft.
.MON...NW winds 5 kt. Waves less than 1 ft.
.MON NIGHT...W winds 5 kt. Waves flat.
.TUE...NW winds 5 kt. Waves less than 1 ft.
.WED...NW winds 5 kt. Waves flat.
$$
ANZ542-220800-
Patuxent River to Broomes Island MD-
434 PM EDT Sat Jun 21 2025
.REST OF THIS AFTERNOON...S winds 10 kt. Waves 1 ft.
.TONIGHT...S winds 5 to 10 kt. Waves 1 ft.
.SUN...SW winds 5 kt. Waves less than 1 ft.
.SUN NIGHT...SW winds 5 kt. Waves less than 1 ft.
.MON...NW winds 5 kt. Waves less than 1 ft.
.MON NIGHT...SW winds around 5 kt. Waves 1 ft.
.TUE...NW winds around 5 kt. Waves 1 ft.
.WED...NW winds around 5 kt. Waves 1 ft.
$$
ANZ534-220800-
Chesapeake Bay from Drum Point to Smith Point-
434 PM EDT Sat Jun 21 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT SUNDAY...
.REST OF THIS AFTERNOON...S winds 10 kt. Waves 2 ft.
.TONIGHT...S winds 10 to 15 kt with gusts to 25 kt. Waves 3 ft.
.SUN...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SUN NIGHT...S winds 10 to 15 kt...becoming SW 5 to 10 kt after
midnight. Gusts up to 20 kt. Waves 2 ft.
.MON...W winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...SW winds 5 kt. Waves less than 1 ft.
.TUE...W winds 5 kt. Waves less than 1 ft.
.WED...W winds 5 kt. Waves less than 1 ft.
$$
ANZ543-220800-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
434 PM EDT Sat Jun 21 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT SUNDAY...
.REST OF THIS AFTERNOON...S winds 10 kt. Waves 1 ft.
.TONIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SUN...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.SUN NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft.
.MON...W winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...SW winds 5 kt. Waves less than 1 ft.
.TUE...W winds 5 to 10 kt. Waves 1 ft.
.WED...W winds 5 kt. Waves less than 1 ft.
$$
CWFLWX
Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
434 PM EDT Sat Jun 21 2025
Tidal Potomac River and Maryland portion of Chesapeake Bay.
Forecasts of wave heights do not include effects of wind direction
relative to tidal currents. Expect higher waves when winds are
blowing against the tidal flow. Waves flat where waters are iced over.
ANZ500-220800-
434 PM EDT Sat Jun 21 2025
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
A large area of high pressure will influence the area through at
least Tuesday. A frontal boundary may approach from the north by
Wednesday and Thursday. A Small Craft Advisory may be needed for
portions of the waters Sunday evening.
$$
ANZ535-220800-
Tidal Potomac from Key Bridge to Indian Head-
434 PM EDT Sat Jun 21 2025
.REST OF THIS AFTERNOON...S winds 5 kt. Waves less than 1 ft.
.TONIGHT...S winds 5 kt. Waves less than 1 ft.
.SUN...SW winds 5 kt. Waves less than 1 ft.
.SUN NIGHT...SW winds around 5 kt. Waves 1 ft.
.MON...NW winds around 5 kt. Waves 1 ft.
.MON NIGHT...W winds around 5 kt. Waves 1 ft or less.
.TUE...NW winds around 5 kt. Waves 1 ft.
.WED...NW winds around 5 kt. Waves 1 ft.
$$
ANZ536-220800-
Tidal Potomac from Indian Head to Cobb Island-
434 PM EDT Sat Jun 21 2025
.REST OF THIS AFTERNOON...S winds 5 kt. Waves less than 1 ft.
.TONIGHT...S winds 5 to 10 kt. Waves 1 ft.
.SUN...SW winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...SW winds around 5 kt. Waves 1 ft.
.MON...NW winds around 5 kt. Waves 1 ft.
.MON NIGHT...W winds around 5 kt. Waves 1 ft.
.TUE...NW winds around 5 kt. Waves 1 ft.
.WED...NW winds around 5 kt. Waves 1 ft.
$$
ANZ537-220800-
Tidal Potomac from Cobb Island to Smith Point-
434 PM EDT Sat Jun 21 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT SUNDAY...
.REST OF THIS AFTERNOON...SE winds 10 kt. Waves 1 ft.
.TONIGHT...S winds 10 to 15 kt...becoming SW late. Gusts up to
20 kt. Waves 1 to 2 ft.
.SUN...SW winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...SW winds 5 to 10 kt. Waves 1 ft.
.MON...NW winds 5 kt. Waves less than 1 ft.
.MON NIGHT...SW winds around 5 kt. Waves flat.
.TUE...NW winds 5 kt. Waves less than 1 ft.
.WED...NW winds around 5 kt. Waves 1 ft or less.
$$
ANZ530-220800-
Chesapeake Bay north of Pooles Island-
434 PM EDT Sat Jun 21 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT SUNDAY...
.REST OF THIS AFTERNOON...SW winds 10 kt. Waves 1 ft. Isolated
showers.
.TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.SUN...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.SUN NIGHT...SW winds 5 to 10 kt. Waves 1 ft.
.MON...NW winds 5 kt. Waves less than 1 ft.
.MON NIGHT...W winds 5 kt. Waves less than 1 ft.
.TUE...NW winds 5 kt. Waves less than 1 ft.
.WED...N winds around 5 kt. Waves 1 ft.
$$
ANZ531-220800-
Chesapeake Bay from Pooles Island to Sandy Point-
434 PM EDT Sat Jun 21 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT SUNDAY...
.REST OF THIS AFTERNOON...S winds 10 kt. Waves 1 ft.
.TONIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SUN...SW winds 5 to 10 kt with gusts to 20 kt. Waves 1 to 2 ft.
.SUN NIGHT...SW winds 5 to 10 kt. Waves 1 ft.
.MON...NW winds 5 kt. Waves less than 1 ft.
.MON NIGHT...W winds 5 kt. Waves less than 1 ft.
.TUE...NW winds 5 kt. Waves less than 1 ft.
.WED...N winds 5 kt. Waves less than 1 ft.
$$
ANZ538-220800-
Patapsco River including Baltimore Harbor-
434 PM EDT Sat Jun 21 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT SUNDAY...
.REST OF THIS AFTERNOON...S winds 10 kt. Waves 1 ft. Isolated
showers.
.TONIGHT...S winds 5 to 10 kt. Waves 1 ft.
.SUN...SW winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...W winds 5 to 10 kt. Waves 1 ft or less.
.MON...NW winds 5 kt. Waves flat.
.MON NIGHT...W winds around 5 kt. Waves flat.
.TUE...NW winds around 5 kt. Waves flat.
.WED...N winds around 5 kt. Waves flat.
$$
ANZ539-220800-
Chester River to Queenstown MD-
434 PM EDT Sat Jun 21 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT SUNDAY...
.REST OF THIS AFTERNOON...S winds 5 kt. Waves less than 1 ft.
.TONIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.SUN...SW winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...SW winds 5 to 10 kt. Waves 1 ft.
.MON...NW winds 5 kt. Waves flat.
.MON NIGHT...W winds around 5 kt. Waves flat.
.TUE...NW winds 5 kt. Waves less than 1 ft.
.WED...N winds around 5 kt. Waves flat.
$$
ANZ532-220800-
Chesapeake Bay from Sandy Point to North Beach-
434 PM EDT Sat Jun 21 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT SUNDAY...
.REST OF THIS AFTERNOON...S winds 10 kt. Waves 1 ft.
.TONIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SUN...SW winds 5 to 10 kt. Gusts up to 20 kt in the morning. Waves
1 to 2 ft.
.SUN NIGHT...SW winds 5 to 10 kt. Waves 1 ft.
.MON...SW winds 5 kt. Waves less than 1 ft.
.MON NIGHT...W winds 5 kt. Waves flat.
.TUE...W winds 5 kt. Waves flat.
.WED...N winds 5 kt. Waves flat.
$$
ANZ540-220800-
Eastern Bay-
434 PM EDT Sat Jun 21 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT SUNDAY...
.REST OF THIS AFTERNOON...SW winds 5 kt. Waves less than 1 ft.
.TONIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.SUN...SW winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...SW winds 5 to 10 kt. Waves 1 ft.
.MON...NW winds 5 kt. Waves flat.
.MON NIGHT...W winds around 5 kt. Waves flat.
.TUE...NW winds around 5 kt. Waves flat.
.WED...NW winds around 5 kt. Waves flat.
$$
ANZ533-220800-
Chesapeake Bay from North Beach to Drum Point-
434 PM EDT Sat Jun 21 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT SUNDAY...
.REST OF THIS AFTERNOON...S winds 10 kt. Waves 1 ft.
.TONIGHT...S winds 10 to 15 kt...becoming SW late. Gusts up to
20 kt. Waves 2 ft.
.SUN...SW winds 5 to 10 kt with gusts to 20 kt. Waves 1 to 2 ft.
.SUN NIGHT...SW winds 5 to 10 kt. Waves 1 ft.
.MON...NW winds 5 kt. Waves less than 1 ft.
.MON NIGHT...SW winds 5 kt. Waves flat.
.TUE...NW winds 5 kt. Waves less than 1 ft.
.WED...NW winds 5 kt. Waves less than 1 ft.
$$
ANZ541-220800-
Choptank River to Cambridge MD and the Little Choptank River-
434 PM EDT Sat Jun 21 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT SUNDAY...
.REST OF THIS AFTERNOON...S winds 10 kt. Waves 1 ft.
.TONIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.SUN...SW winds 5 to 10 kt with gusts to 20 kt. Waves 1 to 2 ft.
.SUN NIGHT...SW winds 5 to 10 kt. Waves 1 ft.
.MON...NW winds 5 kt. Waves less than 1 ft.
.MON NIGHT...W winds 5 kt. Waves flat.
.TUE...NW winds 5 kt. Waves less than 1 ft.
.WED...NW winds 5 kt. Waves flat.
$$
ANZ542-220800-
Patuxent River to Broomes Island MD-
434 PM EDT Sat Jun 21 2025
.REST OF THIS AFTERNOON...S winds 10 kt. Waves 1 ft.
.TONIGHT...S winds 5 to 10 kt. Waves 1 ft.
.SUN...SW winds 5 kt. Waves less than 1 ft.
.SUN NIGHT...SW winds 5 kt. Waves less than 1 ft.
.MON...NW winds 5 kt. Waves less than 1 ft.
.MON NIGHT...SW winds around 5 kt. Waves 1 ft.
.TUE...NW winds around 5 kt. Waves 1 ft.
.WED...NW winds around 5 kt. Waves 1 ft.
$$
ANZ534-220800-
Chesapeake Bay from Drum Point to Smith Point-
434 PM EDT Sat Jun 21 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT SUNDAY...
.REST OF THIS AFTERNOON...S winds 10 kt. Waves 2 ft.
.TONIGHT...S winds 10 to 15 kt with gusts to 25 kt. Waves 3 ft.
.SUN...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SUN NIGHT...S winds 10 to 15 kt...becoming SW 5 to 10 kt after
midnight. Gusts up to 20 kt. Waves 2 ft.
.MON...W winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...SW winds 5 kt. Waves less than 1 ft.
.TUE...W winds 5 kt. Waves less than 1 ft.
.WED...W winds 5 kt. Waves less than 1 ft.
$$
ANZ543-220800-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
434 PM EDT Sat Jun 21 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT SUNDAY...
.REST OF THIS AFTERNOON...S winds 10 kt. Waves 1 ft.
.TONIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SUN...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.SUN NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft.
.MON...W winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...SW winds 5 kt. Waves less than 1 ft.
.TUE...W winds 5 to 10 kt. Waves 1 ft.
.WED...W winds 5 kt. Waves less than 1 ft.
$$