651
FZUS51 KLWX 201134
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
734 AM EDT Sun Apr 20 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.

ANZ500-202000-
734 AM EDT Sun Apr 20 2025

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

A cold front will pass south of the area Today. 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.

$$

ANZ535-202000-
Tidal Potomac from Key Bridge to Indian Head-
734 AM EDT Sun Apr 20 2025

.TODAY...N winds 5 kt. Waves less than 1 ft.
.TONIGHT...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 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. A chance of showers through
the night.

$$

ANZ536-202000-
Tidal Potomac from Indian Head to Cobb Island-
734 AM EDT Sun Apr 20 2025

.TODAY...N winds 5 to 10 kt...becoming E late. Waves 1 ft.
.TONIGHT...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 kt. Waves less than 1 ft. A chance of showers.
.TUE NIGHT...NW winds around 5 kt. Waves 1 ft.
.WED...E winds around 5 kt. Waves 1 ft.
.THU...SE winds 5 to 10 kt. Waves 1 ft. A chance of showers through
the night.

$$

ANZ537-202000-
Tidal Potomac from Cobb Island to Smith Point-
734 AM EDT Sun Apr 20 2025

.TODAY...N winds 10 kt...becoming NE late. Waves 1 ft.
.TONIGHT...SE 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. 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...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. A chance of showers
after midnight.

$$

ANZ530-202000-
Chesapeake Bay north of Pooles Island-
734 AM EDT Sun Apr 20 2025

.TODAY...N winds 5 to 10 kt. Waves 1 ft.
.TONIGHT...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.

$$

ANZ531-202000-
Chesapeake Bay from Pooles Island to Sandy Point-
734 AM EDT Sun Apr 20 2025

.TODAY...N winds 5 to 10 kt. Waves 1 ft.
.TONIGHT...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 1 ft or less.
.THU...SE winds 5 to 10 kt. Waves 1 ft or less.

$$

ANZ538-202000-
Patapsco River including Baltimore Harbor-
734 AM EDT Sun Apr 20 2025

.TODAY...N winds 5 to 10 kt. Waves 1 ft.
.TONIGHT...E winds 5 kt. Waves flat.
.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.

$$

ANZ539-202000-
Chester River to Queenstown MD-
734 AM EDT Sun Apr 20 2025

.TODAY...N winds 5 to 10 kt. Waves 1 ft.
.TONIGHT...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 kt. Waves less than 1 ft.
.TUE NIGHT...NW winds 5 kt. Waves less than 1 ft.
.WED...SW winds around 5 kt. Waves 1 ft or less.
.THU...S winds 5 to 10 kt. Waves 1 ft or less.

$$

ANZ532-202000-
Chesapeake Bay from Sandy Point to North Beach-
734 AM EDT Sun Apr 20 2025

.TODAY...N winds 10 kt. Waves 1 ft.
.TONIGHT...E winds 5 kt. Waves less than 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. A chance of showers.
.TUE...W 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. A chance of showers
after midnight.

$$

ANZ540-202000-
Eastern Bay-
734 AM EDT Sun Apr 20 2025

.TODAY...N winds 5 to 10 kt. Waves 1 ft.
.TONIGHT...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. A chance of showers.
.TUE NIGHT...NW winds 5 kt. Waves less than 1 ft.
.WED...E winds around 5 kt. Waves 1 ft or less.
.THU...S winds 5 to 10 kt. Waves 1 ft or less.

$$

ANZ533-202000-
Chesapeake Bay from North Beach to Drum Point-
734 AM EDT Sun Apr 20 2025

.TODAY...N winds 10 kt. Waves 1 ft.
.TONIGHT...SE winds 5 kt. Waves less than 1 ft.
.MON...SE winds 10 to 15 kt. Gusts up to 20 kt in the late morning
and afternoon. 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.
.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. A chance of showers
after midnight.

$$

ANZ541-202000-
Choptank River to Cambridge MD and the Little Choptank River-
734 AM EDT Sun Apr 20 2025

.TODAY...N winds 5 to 10 kt. Waves 1 ft.
.TONIGHT...E winds 5 kt. Waves less than 1 ft.
.MON...SE winds 10 to 15 kt. Gusts up to 20 kt in the late morning
and afternoon. 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 around 5 kt. Waves 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. A chance of showers
after midnight.

$$

ANZ542-202000-
Patuxent River to Broomes Island MD-
734 AM EDT Sun Apr 20 2025

.TODAY...N winds 5 to 10 kt. Waves 1 ft.
.TONIGHT...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 kt. Waves less than 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. A chance of showers after
midnight.

$$

ANZ534-202000-
Chesapeake Bay from Drum Point to Smith Point-
734 AM EDT Sun Apr 20 2025

.TODAY...N winds 10 kt. Waves 1 ft.
.TONIGHT...SE winds 5 to 10 kt. Waves 1 ft.
.MON...SE winds 10 to 15 kt with gusts to 20 kt. Waves 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 to 2 ft. A chance of showers.
.TUE NIGHT...SW winds 5 kt...becoming N after midnight. Waves 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 or less.

$$

ANZ543-202000-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
734 AM EDT Sun Apr 20 2025

.TODAY...N winds 10 kt. Waves 1 ft.
.TONIGHT...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. A
chance of showers.
.TUE...SW winds 10 to 15 kt. Waves 1 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 or less.

$$