233
FZUS51 KLWX 162136
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
536 PM EDT Wed Jul 16 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.

ANZ500-170900-
536 PM EDT Wed Jul 16 2025

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

A cold front will move over the waters Thursday night. Another cold
front may move over the waters Sunday night. Small Craft Advisories
may be needed Thursday night for portions of the waters.

$$

ANZ535-170900-
Tidal Potomac from Key Bridge to Indian Head-
536 PM EDT Wed Jul 16 2025

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

.TONIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms this evening.
.THU...SW winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
.THU NIGHT...W winds 5 to 10 kt. Waves 1 ft.
.FRI...NW winds 5 kt. Waves less than 1 ft. A chance of showers and
tstms.
.FRI NIGHT...SE winds around 5 kt. Waves 1 ft or less.
.SAT...SE winds around 5 kt. Waves 1 ft. Showers likely with a
chance of tstms.
.SAT NIGHT...S winds around 5 kt. Waves 1 ft. A chance of showers
and tstms.
.SUN...NW winds around 5 kt. Waves 1 ft. Showers likely in the
afternoon. A chance of tstms through the night.
.MON...NE winds around 5 kt. Waves 1 ft. A chance of showers through
the night.

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

$$

ANZ536-170900-
Tidal Potomac from Indian Head to Cobb Island-
536 PM EDT Wed Jul 16 2025

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

.TONIGHT...SW winds 10 kt with gusts to 20 kt. Waves 1 ft. A chance
of showers and tstms this evening.
.THU...SW winds 10 kt with gusts to 20 kt. Waves 1 ft.
.THU NIGHT...W winds 5 to 10 kt. Waves 1 ft.
.FRI...NW winds 5 kt. Waves less than 1 ft. A chance of showers and
tstms.
.FRI NIGHT...SW winds around 5 kt. Waves 1 ft. A chance of showers
and tstms.
.SAT...E winds around 5 kt. Waves 1 ft. A chance of showers and
tstms.
.SAT NIGHT...S winds 5 kt. Waves less than 1 ft. A chance of showers
and tstms.
.SUN...NW winds 5 kt. Waves less than 1 ft. A chance of showers and
tstms through the night.
.MON...NE winds around 5 kt. Waves 1 ft. A chance of showers through
the night.

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

$$

ANZ537-170900-
Tidal Potomac from Cobb Island to Smith Point-
536 PM EDT Wed Jul 16 2025

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

.TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt... increasing to
25 kt late. Waves 1 to 2 ft. A chance of showers and tstms, mainly
this evening.
.THU...SW winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft.
.THU NIGHT...W winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.FRI...N winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.
.FRI NIGHT...N winds around 5 kt. Waves 1 ft or less. A chance of
showers and tstms.
.SAT...E winds 5 kt. Waves less than 1 ft. A chance of showers and
tstms.
.SAT NIGHT...S winds 5 kt. Waves less than 1 ft. A chance of showers
and tstms.
.SUN...W winds 5 kt. Waves less than 1 ft. A chance of showers and
tstms.
.MON...NE winds 5 to 10 kt. Waves 1 ft. A chance of showers through
the night.

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

$$

ANZ530-170900-
Chesapeake Bay north of Pooles Island-
536 PM EDT Wed Jul 16 2025

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

.TONIGHT...SW winds 10 kt. Waves 1 ft. A chance of showers and
tstms.
.THU...SW winds 10 kt with gusts to 20 kt. Waves 1 ft.
.THU NIGHT...W winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms. Vsby 1 NM or less.
.FRI...NW winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...N winds 5 kt. Waves less than 1 ft.
.SAT...SE winds around 5 kt. Waves flat. A chance of showers.
.SAT NIGHT...S winds 5 kt. Waves less than 1 ft. Showers likely with
a chance of tstms.
.SUN...NW winds 5 kt. Waves less than 1 ft. A chance of showers. A
chance of tstms through the night.
.MON...NE winds 5 kt. Waves less than 1 ft.

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

$$

ANZ531-170900-
Chesapeake Bay from Pooles Island to Sandy Point-
536 PM EDT Wed Jul 16 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM MIDNIGHT EDT TONIGHT THROUGH
THURSDAY AFTERNOON...

.TONIGHT...SW winds 10 kt with gusts to 20 kt. Waves 1 to 2 ft. A
chance of showers and tstms, mainly this evening.
.THU...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.THU NIGHT...W winds 5 to 10 kt. Waves 1 ft.
.FRI...NW winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...NE winds 5 kt. Waves less than 1 ft.
.SAT...E winds 5 kt. Waves less than 1 ft. A chance of showers and
tstms.
.SAT NIGHT...S winds 5 kt. Waves less than 1 ft. A chance of showers
and tstms.
.SUN...W winds 5 kt...becoming N after midnight. Waves 1 ft. A
chance of showers. A chance of tstms through the night.
.MON...NE winds 5 to 10 kt. Waves 1 ft.

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

$$

ANZ538-170900-
Patapsco River including Baltimore Harbor-
536 PM EDT Wed Jul 16 2025

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

.TONIGHT...SW winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms, mainly this evening.
.THU...SW winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
.THU NIGHT...W winds 5 to 10 kt. Waves 1 ft.
.FRI...NW winds 5 kt. Waves less than 1 ft.
.FRI NIGHT...NE winds around 5 kt. Waves flat.
.SAT...E winds 5 kt. Waves less than 1 ft. A chance of showers and
tstms.
.SAT NIGHT...S winds 5 kt. Waves less than 1 ft. A chance of showers
and tstms.
.SUN...NW winds 5 kt. Waves less than 1 ft. A chance of showers in
the morning, then showers likely with a chance of tstms through the
night.
.MON...E winds 5 kt. Waves less than 1 ft.

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

$$

ANZ539-170900-
Chester River to Queenstown MD-
536 PM EDT Wed Jul 16 2025

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

.TONIGHT...SW winds 10 kt with gusts to 20 kt. Waves 1 to 2 ft. A
chance of showers and tstms, mainly this evening.
.THU...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.THU NIGHT...W winds 5 to 10 kt. Waves 1 ft.
.FRI...NW winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...NE winds 5 kt. Waves less than 1 ft.
.SAT...SE winds 5 kt. Waves flat. A chance of showers and tstms.
.SAT NIGHT...S winds 5 kt. Waves less than 1 ft. A chance of showers
and tstms.
.SUN...NW winds 5 kt. Waves less than 1 ft. A chance of showers. A
chance of tstms through the night.
.MON...NE winds 5 to 10 kt. Waves 1 ft or less.

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

$$

ANZ532-170900-
Chesapeake Bay from Sandy Point to North Beach-
536 PM EDT Wed Jul 16 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM MIDNIGHT EDT TONIGHT THROUGH
THURSDAY AFTERNOON...

.TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A
chance of showers and tstms, mainly this evening.
.THU...SW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.THU NIGHT...W winds 5 to 10 kt. Waves 1 ft.
.FRI...N winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.
.FRI NIGHT...NE winds 5 kt. Waves less than 1 ft. A chance of
showers.
.SAT...SE winds 5 kt. Waves less than 1 ft. A chance of showers and
tstms.
.SAT NIGHT...S winds 5 kt. Waves less than 1 ft. A chance of showers
and tstms.
.SUN...W winds 5 kt...becoming N after midnight. Waves 1 ft. A
chance of showers. A chance of tstms through the night.
.MON...NE winds 5 to 10 kt. Waves 1 ft.

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

$$

ANZ540-170900-
Eastern Bay-
536 PM EDT Wed Jul 16 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM MIDNIGHT EDT TONIGHT THROUGH
THURSDAY AFTERNOON...

.TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft. A chance of showers and tstms, mainly this evening.
.THU...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.THU NIGHT...W winds 5 to 10 kt. Waves 1 ft.
.FRI...NW winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.
.FRI NIGHT...NE winds 5 kt. Waves flat.
.SAT...SE winds 5 kt. Waves flat. A chance of showers and tstms.
.SAT NIGHT...S winds 5 kt. Waves less than 1 ft. A chance of showers
and tstms.
.SUN...W winds 5 kt...becoming N after midnight. Waves 1 ft. A
chance of showers. A chance of tstms through the night.
.MON...NE winds 5 to 10 kt. Waves 1 ft or less.

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

$$

ANZ533-170900-
Chesapeake Bay from North Beach to Drum Point-
536 PM EDT Wed Jul 16 2025

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

.TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A
chance of showers and tstms, mainly this evening.
.THU...SW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.THU NIGHT...W winds 5 to 10 kt. Waves 1 ft.
.FRI...N winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.
.FRI NIGHT...NE winds 5 kt. Waves less than 1 ft. A chance of
showers and tstms.
.SAT...SE winds 5 kt. Waves less than 1 ft. A chance of showers and
tstms.
.SAT NIGHT...S winds 5 kt. Waves less than 1 ft. A chance of showers
and tstms.
.SUN...W winds 5 kt...becoming N after midnight. Waves 1 ft. A
chance of showers. A chance of tstms through the night.
.MON...NE winds 5 to 10 kt. Waves 1 ft.

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

$$

ANZ541-170900-
Choptank River to Cambridge MD and the Little Choptank River-
536 PM EDT Wed Jul 16 2025

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

.TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft. A chance of showers and tstms, mainly this evening.
.THU...SW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.THU NIGHT...W winds 5 to 10 kt. Waves 1 ft.
.FRI...NW winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.
.FRI NIGHT...NE winds 5 kt. Waves less than 1 ft. A chance of
showers.
.SAT...SE winds 5 kt. Waves flat. A chance of showers and tstms.
.SAT NIGHT...S winds 5 kt. Waves less than 1 ft. A chance of showers
and tstms.
.SUN...W winds 5 kt...becoming N after midnight. Waves 1 ft. A
chance of showers. A chance of tstms through the night.
.MON...NE winds 5 to 10 kt. Waves 1 ft.

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

$$

ANZ542-170900-
Patuxent River to Broomes Island MD-
536 PM EDT Wed Jul 16 2025

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

.TONIGHT...SW winds 10 kt with gusts to 20 kt. Waves 1 ft. A chance
of showers and tstms, mainly this evening.
.THU...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.THU NIGHT...W winds 5 to 10 kt. Waves 1 ft.
.FRI...N winds 5 kt. Waves less than 1 ft. A chance of showers and
tstms.
.FRI NIGHT...NE winds around 5 kt. Waves 1 ft. A chance of showers
and tstms.
.SAT...E winds around 5 kt. Waves 1 ft. A chance of showers and
tstms.
.SAT NIGHT...S winds 5 kt. Waves less than 1 ft. A chance of showers
and tstms.
.SUN...NW winds 5 kt. Waves less than 1 ft. A chance of showers. A
chance of tstms.
.MON...NE winds 5 kt. Waves less than 1 ft.

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

$$

ANZ534-170900-
Chesapeake Bay from Drum Point to Smith Point-
536 PM EDT Wed Jul 16 2025

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

.TONIGHT...SW winds 15 to 20 kt with gusts to 25 kt. Waves 2 to
3 ft. A chance of showers and tstms, mainly this evening.
.THU...SW winds 15 to 20 kt with gusts to 25 kt. Waves 2 to 3 ft.
.THU NIGHT...W winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.FRI...NW winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.
.FRI NIGHT...N winds 5 kt. Waves less than 1 ft. A chance of showers
and tstms.
.SAT...SE winds 5 kt. Waves less than 1 ft. A chance of showers and
tstms.
.SAT NIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.
.SUN...W winds 5 to 10 kt...becoming N after midnight. Waves 1 ft. A
chance of showers. A chance of tstms.
.MON...NE winds 5 to 10 kt. Waves 1 ft.

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

$$

ANZ543-170900-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
536 PM EDT Wed Jul 16 2025

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

.TONIGHT...SW winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft. A
chance of showers and tstms, mainly this evening.
.THU...SW winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.THU NIGHT...W winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.FRI...NW winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.
.FRI NIGHT...N winds 5 kt. Waves less than 1 ft. A chance of showers
and tstms.
.SAT...SE winds 5 kt. Waves less than 1 ft. A chance of showers and
tstms.
.SAT NIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.
.SUN...W winds 5 to 10 kt...becoming N after midnight. Waves 1 ft. A
chance of showers. A chance of tstms.
.MON...NE winds 5 to 10 kt. Waves 1 ft.

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

$$