826
FZUS51 KLWX 040535
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
134 AM EDT Fri Jul 4 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.

ANZ500-042000-
134 AM EDT Fri Jul 4 2025

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

High pressure will build across the area this weekend, while low
pressure develops off the southeast coast. A cold front will
approach the waters from the northwest early next week. Small Craft
Advisories may be needed Sunday night.

$$

ANZ535-042000-
Tidal Potomac from Key Bridge to Indian Head-
134 AM EDT Fri Jul 4 2025

.OVERNIGHT...N winds 5 kt. Waves less than 1 ft.
.FRI...N winds 5 kt. Waves less than 1 ft.
.FRI NIGHT...NE winds around 5 kt. Waves 1 ft or less.
.SAT...SE winds around 5 kt. Waves 1 ft.
.SAT NIGHT...S winds around 5 kt. Waves 1 ft.
.SUN...S winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.MON...S winds around 5 kt. Waves 1 ft. A chance of showers and
tstms through the night.
.TUE...W winds around 5 kt. Waves 1 ft. A chance of showers and
tstms.

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

$$

ANZ536-042000-
Tidal Potomac from Indian Head to Cobb Island-
134 AM EDT Fri Jul 4 2025

.OVERNIGHT...N winds 5 to 10 kt. Waves 1 ft.
.FRI...N winds 5 kt. Waves less than 1 ft.
.FRI NIGHT...E winds around 5 kt. Waves 1 ft or less.
.SAT...SE winds around 5 kt. Waves 1 ft.
.SAT NIGHT...S winds around 5 kt. Waves 1 ft.
.SUN...S winds around 5 kt. Waves 1 ft.
.SUN NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.MON...S winds 5 kt. Waves less than 1 ft. A chance of showers and
tstms through the night.
.TUE...W winds around 5 kt. Waves 1 ft. A chance of showers and
tstms.

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

$$

ANZ537-042000-
Tidal Potomac from Cobb Island to Smith Point-
134 AM EDT Fri Jul 4 2025

.OVERNIGHT...NW winds 10 kt. Waves 1 ft.
.FRI...N winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...E winds around 5 kt. Waves 1 ft or less.
.SAT...SE winds 5 to 10 kt. Waves 1 ft or less.
.SAT NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.SUN...S winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.MON...S winds 5 to 10 kt. Waves 1 ft. A chance of showers. A chance
of tstms through the night.
.TUE...SW winds 5 kt. Waves less than 1 ft. A chance of showers and
tstms.

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

$$

ANZ530-042000-
Chesapeake Bay north of Pooles Island-
134 AM EDT Fri Jul 4 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 AM EDT EARLY THIS
MORNING...

.OVERNIGHT...N winds 10 kt. Waves 1 ft.
.FRI...N winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...NE winds around 5 kt. Waves 1 ft or less.
.SAT...SE winds around 5 kt. Waves 1 ft.
.SAT NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.SUN...S winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.MON...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms
through the night.
.TUE...W winds 5 kt. Waves less than 1 ft. A chance of tstms through
the night. A chance of showers.

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

$$

ANZ531-042000-
Chesapeake Bay from Pooles Island to Sandy Point-
134 AM EDT Fri Jul 4 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 AM EDT EARLY THIS
MORNING...

.OVERNIGHT...N winds 10 kt with gusts to 20 kt. Waves 1 to 2 ft.
.FRI...N winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...NE winds around 5 kt. Waves flat.
.SAT...SE winds around 5 kt. Waves 1 ft or less.
.SAT NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.SUN...S winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.MON...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms
through the night.
.TUE...SW winds 5 kt. Waves less than 1 ft. A chance of tstms
through the night. A chance of showers.

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

$$

ANZ538-042000-
Patapsco River including Baltimore Harbor-
134 AM EDT Fri Jul 4 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 AM EDT EARLY THIS
MORNING...

.OVERNIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.FRI...N winds 5 kt. Waves flat.
.FRI NIGHT...NE winds around 5 kt. Waves flat.
.SAT...SE winds around 5 kt. Waves 1 ft or less.
.SAT NIGHT...S winds 5 kt. Waves less than 1 ft.
.SUN...S winds 5 to 10 kt. Waves 1 ft or less.
.SUN NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.MON...S winds 5 kt. Waves less than 1 ft. A chance of showers and
tstms through the night.
.TUE...W winds around 5 kt. Waves 1 ft or less. A chance of tstms
through the night. A chance of showers.

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

$$

ANZ539-042000-
Chester River to Queenstown MD-
134 AM EDT Fri Jul 4 2025

.OVERNIGHT...N winds 10 kt. Waves 1 ft.
.FRI...N winds 5 to 10 kt. Waves 1 ft or less.
.FRI NIGHT...NE winds around 5 kt. Waves flat.
.SAT...SE winds around 5 kt. Waves flat.
.SAT NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.SUN...S winds 5 kt. Waves less than 1 ft.
.SUN NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.MON...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms
through the night.
.TUE...SW winds 5 kt. Waves less than 1 ft. A chance of showers and
tstms.

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

$$

ANZ532-042000-
Chesapeake Bay from Sandy Point to North Beach-
134 AM EDT Fri Jul 4 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 AM EDT EARLY THIS
MORNING...

.OVERNIGHT...N winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft.
.FRI...N winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...E winds around 5 kt. Waves flat.
.SAT...SE winds 5 to 10 kt. Waves 1 ft or less.
.SAT NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.SUN...S winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...S winds 5 to 10 kt. Waves 2 ft.
.MON...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms
through the night.
.TUE...SW winds 5 kt. Waves less than 1 ft. A chance of showers and
tstms.

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

$$

ANZ540-042000-
Eastern Bay-
134 AM EDT Fri Jul 4 2025

.OVERNIGHT...N winds 10 kt. Waves 1 ft.
.FRI...N winds 5 to 10 kt. Waves 1 ft or less.
.FRI NIGHT...E winds around 5 kt. Waves flat.
.SAT...SE winds around 5 kt. Waves flat.
.SAT NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.SUN...S winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.MON...S winds 5 to 10 kt. Waves 1 ft. A chance of showers. A chance
of tstms through the night.
.TUE...SW winds 5 kt. Waves less than 1 ft. A chance of showers and
tstms.

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

$$

ANZ533-042000-
Chesapeake Bay from North Beach to Drum Point-
134 AM EDT Fri Jul 4 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 AM EDT EARLY THIS
MORNING...

.OVERNIGHT...N winds 15 kt with gusts to 20 kt. Waves 2 ft.
.FRI...N winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...E winds around 5 kt. Waves 1 ft or less.
.SAT...SE winds 5 to 10 kt. Waves 1 ft or less.
.SAT NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.SUN...S winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...S winds 10 to 15 kt. Waves 2 ft.
.MON...S winds 5 to 10 kt. Waves 1 ft. A chance of showers. A chance
of tstms through the night.
.TUE...SW winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.

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

$$

ANZ541-042000-
Choptank River to Cambridge MD and the Little Choptank River-
134 AM EDT Fri Jul 4 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 AM EDT EARLY THIS
MORNING...

.OVERNIGHT...N winds 10 kt with gusts to 20 kt. Waves 1 ft.
.FRI...N winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...E winds around 5 kt. Waves flat.
.SAT...SE winds around 5 kt. Waves 1 ft or less.
.SAT NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.SUN...S winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.MON...S winds 5 to 10 kt. Waves 1 ft. A chance of showers. A chance
of tstms through the night.
.TUE...SW winds 5 kt. Waves less than 1 ft. A chance of showers and
tstms.

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

$$

ANZ542-042000-
Patuxent River to Broomes Island MD-
134 AM EDT Fri Jul 4 2025

.OVERNIGHT...N winds 5 to 10 kt. Waves 1 ft.
.FRI...N winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...E winds around 5 kt. Waves 1 ft or less.
.SAT...SE winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.SUN...S winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.MON...S winds 5 to 10 kt. Waves 1 ft. A chance of showers. A chance
of tstms through the night.
.TUE...SW winds around 5 kt. Waves 1 ft. A chance of showers and
tstms.

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

$$

ANZ534-042000-
Chesapeake Bay from Drum Point to Smith Point-
134 AM EDT Fri Jul 4 2025

.OVERNIGHT...NW winds 15 kt with gusts to 20 kt. Waves 2 ft.
.FRI...N winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...E winds 5 kt. Waves less than 1 ft.
.SAT...SE winds 5 to 10 kt. Waves 1 ft or less.
.SAT NIGHT...S winds 5 to 10 kt. Waves 1 to 2 ft.
.SUN...S winds 5 to 10 kt. Waves 1 to 2 ft.
.SUN NIGHT...S winds 10 to 15 kt. Waves 2 ft.
.MON...S winds 5 to 10 kt. Waves 1 to 2 ft. A chance of showers. A
chance of tstms through the night.
.TUE...SW winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.

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

$$

ANZ543-042000-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
134 AM EDT Fri Jul 4 2025

.OVERNIGHT...W winds 10 kt...becoming N late. Waves 1 ft.
.FRI...N winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...N winds 5 to 10 kt...becoming SE in the late evening
and overnight. Waves 1 ft or less.
.SAT...SE winds 5 to 10 kt. Waves 1 ft or less.
.SAT NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.SUN...S winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...S winds 10 to 15 kt. Waves 1 ft.
.MON...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.
.TUE...SW winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.

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

$$