362
FZUS51 KLWX 200342
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
1141 PM EDT Sat Apr 19 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.

ANZ500-200800-
1141 PM EDT Sat Apr 19 2025

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

A cold front will move into the area tonight. The boundary will pass
 south of the area Sunday. An additional cold front may move over
the  waters Monday night. Small Craft Advisories may be needed
through  early Sunday, and again late Monday into early Tuesday.
Boaters should be aware of the threats of boating in cold water,
even when air temperatures are warm. Visit
weather.gov/safety/coldwater for more information.

$$

ANZ535-200800-
Tidal Potomac from Key Bridge to Indian Head-
1141 PM EDT Sat Apr 19 2025

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

.REST OF TONIGHT...SW winds 10 kt...becoming NW late. Waves 1 ft.
.SUN...N winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...E winds around 5 kt. Waves 1 ft.
.MON...SE winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.TUE...W winds 5 to 10 kt. Waves 1 ft.
.TUE NIGHT...NW winds around 5 kt. Waves 1 ft.
.WED...E winds around 5 kt. Waves 1 ft or less.
.THU...SE winds 5 to 10 kt. Waves 1 ft.

$$

ANZ536-200800-
Tidal Potomac from Indian Head to Cobb Island-
1141 PM EDT Sat Apr 19 2025

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

.REST OF TONIGHT...W winds 10 kt with gusts to 20 kt. Waves 1 ft.
.SUN...N winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...E winds 5 to 10 kt. Waves 1 ft.
.MON...SE winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.TUE...W winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.TUE NIGHT...NW winds around 5 kt. Waves 1 ft. A chance of showers.
.WED...E winds around 5 kt. Waves 1 ft. A chance of showers in the
morning.
.THU...SE winds 5 to 10 kt. Waves 1 ft.

$$

ANZ537-200800-
Tidal Potomac from Cobb Island to Smith Point-
1141 PM EDT Sat Apr 19 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 AM EDT SUNDAY...

.REST OF TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves
2 ft.
.SUN...N winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...E winds 5 to 10 kt. Waves 1 ft.
.MON...SE winds 10 to 15 kt. Waves 1 to 2 ft.
.MON NIGHT...S winds 10 to 15 kt. Waves 2 ft.
.TUE...SW winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.TUE NIGHT...W winds 5 kt. Waves less than 1 ft. A chance of
showers.
.WED...NE winds 5 to 10 kt...becoming SE. Waves 1 ft or less. A
chance of showers in the morning.
.THU...SE winds 5 to 10 kt. Waves 1 ft or less.

$$

ANZ530-200800-
Chesapeake Bay north of Pooles Island-
1141 PM EDT Sat Apr 19 2025

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

.REST OF TONIGHT...SW winds 10 kt...becoming NW late. Gusts up to
20 kt. Waves 1 to 2 ft. A chance of showers with a slight chance of
tstms late this evening.
.SUN...N winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
.SUN NIGHT...E winds 5 kt. Waves less than 1 ft.
.MON...SE winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.TUE...W winds 5 to 10 kt. Waves 1 ft.
.TUE NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.WED...W winds around 5 kt. Waves 1 ft or less.
.THU...SE winds around 5 kt. Waves 1 ft.

Winds and waves higher and visibilities lower in and near tstms.

$$

ANZ531-200800-
Chesapeake Bay from Pooles Island to Sandy Point-
1141 PM EDT Sat Apr 19 2025

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

.REST OF TONIGHT...SW winds 15 kt...becoming NW late. Gusts up to
20 kt. Waves 1 to 2 ft. A slight chance of showers and tstms late
this evening.
.SUN...N winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...E winds 5 kt. Waves less than 1 ft.
.MON...SE winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.TUE...W winds 5 to 10 kt. Waves 1 ft.
.TUE NIGHT...NW winds 5 kt. Waves less than 1 ft.
.WED...S winds around 5 kt. Waves flat.
.THU...SE winds 5 to 10 kt. Waves 1 ft or less.

Winds and waves higher and visibilities lower in and near tstms.

$$

ANZ538-200800-
Patapsco River including Baltimore Harbor-
1141 PM EDT Sat Apr 19 2025

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

.REST OF TONIGHT...SW winds 10 kt with gusts to 20 kt... becoming NW
late. Waves 1 ft.
.SUN...N winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...E winds 5 kt. Waves less than 1 ft.
.MON...SE winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.TUE...W winds 5 to 10 kt. Waves 1 ft or less.
.TUE NIGHT...NW winds 5 kt. Waves less than 1 ft.
.WED...SE winds around 5 kt. Waves flat.
.THU...SE winds around 5 kt. Waves 1 ft or less.

$$

ANZ539-200800-
Chester River to Queenstown MD-
1141 PM EDT Sat Apr 19 2025

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

.REST OF TONIGHT...SW winds 15 kt...becoming NW late. Gusts up to
20 kt. Waves 1 to 2 ft.
.SUN...N winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...E winds 5 kt. Waves less than 1 ft.
.MON...SE winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...S winds 10 kt. Waves 1 ft. A chance of showers.
.TUE...SW winds 5 to 10 kt. Waves 1 ft.
.TUE NIGHT...NW winds 5 kt. Waves less than 1 ft.
.WED...SW winds around 5 kt. Waves flat.
.THU...S winds 5 to 10 kt. Waves 1 ft or less.

$$

ANZ532-200800-
Chesapeake Bay from Sandy Point to North Beach-
1141 PM EDT Sat Apr 19 2025

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

.REST OF TONIGHT...SW winds 15 kt...becoming NW late. Gusts up to
20 kt. Waves 1 to 2 ft.
.SUN...N winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...E winds 5 kt. Waves less than 1 ft.
.MON...SE winds 5 to 10 kt. Waves 1 to 2 ft.
.MON NIGHT...S winds 10 to 15 kt. Waves 2 ft. A chance of showers.
.TUE...SW winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.TUE NIGHT...NW winds 5 kt. Waves less than 1 ft.
.WED...NE winds 5 to 10 kt...becoming S. Waves 1 ft or less.
.THU...SE winds 5 to 10 kt. Waves 1 ft or less.

$$

ANZ540-200800-
Eastern Bay-
1141 PM EDT Sat Apr 19 2025

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

.REST OF TONIGHT...SW winds 15 kt...becoming NW late. Gusts up to
20 kt. Waves 1 to 2 ft.
.SUN...N winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...E winds 5 kt. Waves less than 1 ft.
.MON...SE winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...S winds 10 kt. Waves 1 ft. A chance of showers.
.TUE...SW winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.TUE NIGHT...NW winds 5 kt. Waves less than 1 ft.
.WED...E winds around 5 kt. Waves flat.
.THU...S winds 5 to 10 kt. Waves 1 ft or less.

$$

ANZ533-200800-
Chesapeake Bay from North Beach to Drum Point-
1141 PM EDT Sat Apr 19 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 AM EDT SUNDAY...

.REST OF TONIGHT...W winds 10 to 15 kt with gusts to 20 kt. Waves
1 to 2 ft.
.SUN...N winds 5 to 10 kt. Waves 1 to 2 ft.
.SUN NIGHT...E winds 5 to 10 kt. Waves 1 ft.
.MON...SE winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.MON NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A
chance of showers.
.TUE...SW winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.TUE NIGHT...NW winds 5 kt. Waves less than 1 ft. A chance of
showers.
.WED...N winds 5 to 10 kt...becoming S. Waves 1 ft or less. A chance
of showers in the morning.
.THU...SE winds 5 to 10 kt. Waves 1 ft or less.

$$

ANZ541-200800-
Choptank River to Cambridge MD and the Little Choptank River-
1141 PM EDT Sat Apr 19 2025

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

.REST OF TONIGHT...W winds 10 to 15 kt. Gusts up to 25 kt late this
evening. Waves 1 to 2 ft.
.SUN...N winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...E winds 5 kt. Waves less than 1 ft.
.MON...SE winds 10 to 15 kt. Waves 1 ft.
.MON NIGHT...S winds 10 to 15 kt. Waves 1 ft. A chance of showers.
.TUE...SW winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.TUE NIGHT...NW winds 5 kt. Waves less than 1 ft.
.WED...N winds 5 to 10 kt...becoming S. Waves 1 ft or less.
.THU...SE winds 5 to 10 kt. Waves 1 ft or less.

$$

ANZ542-200800-
Patuxent River to Broomes Island MD-
1141 PM EDT Sat Apr 19 2025

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

.REST OF TONIGHT...SW winds 10 kt with gusts to 20 kt. Waves 1 ft.
.SUN...N winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...E winds 5 kt. Waves less than 1 ft.
.MON...SE winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.TUE...SW winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.TUE NIGHT...NW winds around 5 kt. Waves 1 ft. A chance of showers.
.WED...E winds around 5 kt. Waves 1 ft. A chance of showers in the
morning.
.THU...SE winds around 5 kt. Waves 1 ft.

$$

ANZ534-200800-
Chesapeake Bay from Drum Point to Smith Point-
1141 PM EDT Sat Apr 19 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 AM EDT SUNDAY...

.REST OF TONIGHT...SW winds 15 kt with gusts to 25 kt. Waves 2 to
3 ft.
.SUN...N winds 5 to 10 kt. Waves 1 to 2 ft.
.SUN NIGHT...SE winds 5 to 10 kt. Waves 1 ft.
.MON...SE winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.MON NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A
chance of showers.
.TUE...SW winds 10 to 15 kt. Waves 1 to 2 ft. A chance of showers.
.TUE NIGHT...W winds 5 kt. Waves less than 1 ft. A chance of
showers.
.WED...N winds 5 to 10 kt...becoming SE. Waves 1 ft. A chance of
showers through the day.
.THU...SE winds 5 to 10 kt. Waves 1 ft.

$$

ANZ543-200800-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
1141 PM EDT Sat Apr 19 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 AM EDT SUNDAY...

.REST OF TONIGHT...SW winds 15 kt with gusts to 25 kt. Waves 2 ft.
.SUN...N winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...SE winds 5 to 10 kt. Waves 1 ft.
.MON...SE winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.MON NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.TUE...SW winds 10 to 15 kt. Waves 1 to 2 ft. A chance of showers.
.TUE NIGHT...W winds 5 kt. Waves less than 1 ft. A chance of
showers.
.WED...N winds 5 to 10 kt...becoming SE. Waves 1 ft or less. A
chance of showers in the morning.
.THU...SE winds 5 to 10 kt. Waves 1 ft.

$$