558
FZUS51 KLWX 092034
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
433 PM EDT Fri May 9 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.

ANZ500-100800-
433 PM EDT Fri May 9 2025

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

As a cold front pushes slowly southeast today, coastal low pressure
will form along the front, moving north towards New York City this
evening. High pressure will build into the area during the first
half of the weekend before a secondary cold front tracks through the
 waters on Sunday morning. High pressure returns through Monday
before low pressure approaches from the southwest Tuesday. Small
Craft Advisories may be needed by Tuesday.

$$

ANZ535-100800-
Tidal Potomac from Key Bridge to Indian Head-
434 PM EDT Fri May 9 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY MORNING THROUGH
SATURDAY AFTERNOON...

.REST OF THIS AFTERNOON...NW winds 10 kt with gusts to 20 kt. Waves
1 ft. Scattered showers.
.TONIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.SAT...NW winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
.SAT NIGHT...W winds around 5 kt. Waves 1 ft.
.SUN...N winds around 5 kt. Waves 1 ft.
.SUN NIGHT...E winds around 5 kt. Waves 1 ft.
.MON...SE winds 5 to 10 kt. Waves 1 ft. A chance of showers through
the night.
.TUE...SE winds 5 to 10 kt. Waves 1 ft. Showers likely through the
day, then showers with a chance of tstms through the night.

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

$$

ANZ536-100800-
Tidal Potomac from Indian Head to Cobb Island-
434 PM EDT Fri May 9 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY AFTERNOON...

.REST OF THIS AFTERNOON...NW winds 10 kt. Waves 1 ft. Scattered
showers.
.TONIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.SAT...NW winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
.SAT NIGHT...W winds 5 kt. Waves less than 1 ft.
.SUN...N winds 5 kt. Waves less than 1 ft.
.SUN NIGHT...SE winds around 5 kt. Waves 1 ft.
.MON...SE winds 5 to 10 kt. Waves 1 ft. A chance of showers through
the night.
.TUE...SE winds 5 to 10 kt. Waves 1 ft. Showers likely through the
day, then showers with a chance of tstms through the night.

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

$$

ANZ537-100800-
Tidal Potomac from Cobb Island to Smith Point-
434 PM EDT Fri May 9 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY AFTERNOON...

.REST OF THIS AFTERNOON...NW winds 15 kt with gusts to 20 kt. Waves
2 ft. Scattered showers.
.TONIGHT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SAT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SAT NIGHT...W winds 5 to 10 kt. Waves 1 ft.
.SUN...N winds 5 kt. Waves less than 1 ft.
.SUN NIGHT...SE winds 5 kt. Waves less than 1 ft.
.MON...SE winds 5 to 10 kt. Waves 1 ft. A chance of showers after
midnight.
.TUE...SE winds 10 to 15 kt. Waves 1 to 2 ft. Showers likely through
the day, then showers with a chance of tstms through the night.

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

$$

ANZ530-100800-
Chesapeake Bay north of Pooles Island-
434 PM EDT Fri May 9 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY AFTERNOON...

.REST OF THIS AFTERNOON...NW winds 10 kt with gusts to 20 kt. Waves
1 ft. Scattered showers.
.TONIGHT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.SAT...NW winds 10 to 15 kt with gusts to 25 kt. Waves 1 ft.
.SAT NIGHT...W winds 5 to 10 kt. Waves 1 ft.
.SUN...N winds 5 kt. Waves less than 1 ft.
.SUN NIGHT...NE winds around 5 kt. Waves 1 ft.
.MON...SE winds around 5 kt. Waves 1 ft. A chance of showers after
midnight.
.TUE...SE winds 5 to 10 kt. Waves 1 ft. A chance of showers through
the day, then showers likely through the night.

$$

ANZ531-100800-
Chesapeake Bay from Pooles Island to Sandy Point-
434 PM EDT Fri May 9 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY AFTERNOON...

.REST OF THIS AFTERNOON...NW winds 10 kt with gusts to 20 kt. Waves
2 ft. Scattered showers.
.TONIGHT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SAT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SAT NIGHT...W winds 5 to 10 kt. Waves 1 ft.
.SUN...N winds 5 kt. Waves less than 1 ft.
.SUN NIGHT...E winds 5 kt. Waves flat.
.MON...SE winds 5 to 10 kt. Waves 1 ft or less. A chance of showers
after midnight.
.TUE...SE winds 5 to 10 kt. Waves 1 ft. A chance of showers in the
morning, then showers likely.

$$

ANZ538-100800-
Patapsco River including Baltimore Harbor-
434 PM EDT Fri May 9 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY MORNING THROUGH
SATURDAY AFTERNOON...

.REST OF THIS AFTERNOON...NW winds 10 kt with gusts to 20 kt. Waves
1 ft. Scattered showers.
.TONIGHT...NW winds 10 kt with gusts to 20 kt. Waves 1 ft.
.SAT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.SAT NIGHT...W winds 5 to 10 kt. Waves 1 ft or less.
.SUN...N winds 5 kt. Waves flat.
.SUN NIGHT...E winds 5 kt. Waves flat.
.MON...SE winds 5 to 10 kt. Waves 1 ft or less. A chance of showers
after midnight.
.TUE...SE winds 5 to 10 kt. Waves 1 ft. A chance of showers in the
morning, then showers.

$$

ANZ539-100800-
Chester River to Queenstown MD-
434 PM EDT Fri May 9 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY AFTERNOON...

.REST OF THIS AFTERNOON...NW winds 10 kt with gusts to 20 kt. Waves
2 ft. Scattered showers.
.TONIGHT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SAT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SAT NIGHT...W winds 5 kt. Waves less than 1 ft.
.SUN...N winds 5 kt. Waves less than 1 ft.
.SUN NIGHT...E winds 5 kt. Waves flat.
.MON...SE winds 5 to 10 kt. Waves 1 ft or less. A chance of showers
after midnight.
.TUE...SE winds 5 to 10 kt. Waves 1 ft. A chance of showers in the
morning, then showers likely.

$$

ANZ532-100800-
Chesapeake Bay from Sandy Point to North Beach-
434 PM EDT Fri May 9 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY AFTERNOON...

.REST OF THIS AFTERNOON...NW winds 10 kt with gusts to 20 kt. Waves
2 ft. Scattered showers.
.TONIGHT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SAT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SAT NIGHT...W winds 5 to 10 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. A chance of showers after
midnight.
.TUE...SE winds 10 to 15 kt. Waves 1 to 2 ft. A chance of showers in
the morning, then showers.

$$

ANZ540-100800-
Eastern Bay-
434 PM EDT Fri May 9 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY AFTERNOON...

.REST OF THIS AFTERNOON...NW winds 10 kt with gusts to 20 kt. Waves
1 ft. Scattered showers.
.TONIGHT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft.
.SAT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SAT NIGHT...W winds 5 kt. Waves less than 1 ft.
.SUN...N winds 5 kt. Waves less than 1 ft.
.SUN NIGHT...E winds 5 kt. Waves flat.
.MON...SE winds 5 to 10 kt. Waves 1 ft or less. A chance of showers
after midnight.
.TUE...SE winds 5 to 10 kt. Waves 1 ft. A chance of showers in the
morning, then showers likely.

$$

ANZ533-100800-
Chesapeake Bay from North Beach to Drum Point-
434 PM EDT Fri May 9 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY AFTERNOON...

.REST OF THIS AFTERNOON...NW winds 10 kt with gusts to 20 kt. Waves
2 ft. Scattered showers.
.TONIGHT...NW winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft.
.SAT...NW winds 10 to 15 kt. Gusts up to 25 kt. Waves 2 ft.
.SAT NIGHT...W winds 5 to 10 kt. Waves 1 ft.
.SUN...N winds 5 kt. Waves less than 1 ft.
.SUN NIGHT...E winds 5 kt. Waves less than 1 ft.
.MON...SE winds 5 to 10 kt. Waves 1 ft. A chance of showers after
midnight.
.TUE...SE winds 10 to 15 kt. Waves 1 to 2 ft. A chance of showers in
the morning, then showers. A chance of tstms through the night.

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

$$

ANZ541-100800-
Choptank River to Cambridge MD and the Little Choptank River-
434 PM EDT Fri May 9 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY AFTERNOON...

.REST OF THIS AFTERNOON...NW winds 10 kt with gusts to 20 kt. Waves
2 ft. Scattered showers.
.TONIGHT...NW winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft.
.SAT...NW winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft.
.SAT NIGHT...W winds 5 to 10 kt. Waves 1 ft.
.SUN...NW winds 5 kt. Waves less than 1 ft.
.SUN NIGHT...E winds 5 kt. Waves less than 1 ft.
.MON...SE winds 5 to 10 kt. Waves 1 ft. A chance of showers after
midnight.
.TUE...SE winds 10 to 15 kt. Waves 1 ft. A chance of showers in the
morning, then showers.

$$

ANZ542-100800-
Patuxent River to Broomes Island MD-
434 PM EDT Fri May 9 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY MORNING THROUGH
SATURDAY AFTERNOON...

.REST OF THIS AFTERNOON...NW winds 10 kt. Waves 1 ft. Scattered
showers.
.TONIGHT...NW winds 10 kt with gusts to 20 kt. Waves 1 ft.
.SAT...NW winds 10 kt with gusts to 20 kt. Waves 1 ft.
.SAT NIGHT...W winds 5 kt. Waves less than 1 ft.
.SUN...N winds 5 kt. Waves less than 1 ft.
.SUN NIGHT...SE winds 5 kt. Waves less than 1 ft.
.MON...SE winds 5 to 10 kt. Waves 1 ft. A chance of showers after
midnight.
.TUE...SE winds 5 to 10 kt. Waves 1 ft. A chance of showers in the
morning, then showers. A chance of tstms through the night.

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

$$

ANZ534-100800-
Chesapeake Bay from Drum Point to Smith Point-
434 PM EDT Fri May 9 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY AFTERNOON...

.REST OF THIS AFTERNOON...N winds 15 kt with gusts to 25 kt. Waves
3 ft. Scattered showers.
.TONIGHT...NW winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.
.SAT...NW winds 15 to 20 kt...diminishing to 10 kt late. Gusts up to
25 kt. Waves 3 ft.
.SAT NIGHT...W winds 5 to 10 kt. Waves 1 ft.
.SUN...NW winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...SE winds 5 to 10 kt. Waves 1 ft.
.MON...SE winds 5 to 10 kt. Waves 1 to 2 ft. A chance of showers
after midnight.
.TUE...SE winds 10 to 15 kt. Waves 2 ft. A chance of showers in the
morning, then showers. A chance of tstms through the night.

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

$$

ANZ543-100800-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
434 PM EDT Fri May 9 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY AFTERNOON...

.REST OF THIS AFTERNOON...NW winds 15 kt with gusts to 20 kt. Waves
2 ft. Scattered showers.
.TONIGHT...NW winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.SAT...NW winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.SAT NIGHT...W winds 5 to 10 kt. Waves 1 ft.
.SUN...NW winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...SE winds 5 to 10 kt. Waves 1 ft.
.MON...SE winds 5 to 10 kt. Waves 1 ft. A chance of showers after
midnight.
.TUE...SE winds 10 to 15 kt. Waves 1 to 2 ft. A chance of showers in
the morning, then showers likely. A chance of tstms through the
night.

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

$$