745
FZUS51 KLWX 161736
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
136 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.

ANZ500-170800-
136 PM EDT Wed Jul 16 2025

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

A frontal system will stall over the region this morning before
dissipating. A cold front approaches from the west Friday evening
before crossing the waters by early Saturday. Thereafter, this front
 may stall nearby. Small Craft Advisories may be needed Wednesday
evening into Thursday, particularly across the southern waters.

$$

ANZ535-170800-
Tidal Potomac from Key Bridge to Indian Head-
136 PM EDT Wed Jul 16 2025

.THIS AFTERNOON...S winds 10 kt. Waves 1 ft. A chance of showers and
tstms. Vsby 1 NM or less.
.TONIGHT...SW winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms. Vsby 1 NM or less.
.THU...SW winds 5 to 10 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...S winds around 5 kt. Waves 1 ft. Showers likely through the
night. A chance of tstms. A chance of showers after midnight.
.SUN...NW winds around 5 kt. Waves 1 ft. Showers likely in the
afternoon. A chance of tstms through the night.

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

$$

ANZ536-170800-
Tidal Potomac from Indian Head to Cobb Island-
136 PM EDT Wed Jul 16 2025

.THIS AFTERNOON...S winds 10 kt. Waves 1 ft. A chance of showers and
tstms. Vsby 1 NM or less.
.TONIGHT...SW winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft. A
chance of showers and tstms. Vsby 1 NM or less.
.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...S winds around 5 kt. Waves 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.

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

$$

ANZ537-170800-
Tidal Potomac from Cobb Island to Smith Point-
136 PM EDT Wed Jul 16 2025

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

.THIS AFTERNOON...SW winds 10 kt. Waves 1 ft. A chance of showers
and tstms. Vsby 1 NM or less.
.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. Vsby
1 NM or less.
.THU...SW winds 10 to 15 kt. Gusts up to 25 kt in the morning. 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...N winds around 5 kt. Waves 1 ft or less. A chance of
showers and tstms.
.SAT...SE 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.

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

$$

ANZ530-170800-
Chesapeake Bay north of Pooles Island-
136 PM EDT Wed Jul 16 2025

.THIS AFTERNOON...S winds 10 kt. Waves 1 ft. Showers and tstms
likely. Vsby 1 NM or less.
.TONIGHT...SW winds 5 to 10 kt. Waves 1 ft. Showers and tstms
likely. Vsby 1 NM or less.
.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. A chance of showers and
tstms.
.FRI...NW winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...N winds 5 kt. Waves less than 1 ft.
.SAT...S winds around 5 kt. Waves 1 ft or less. A chance of showers
in the afternoon. Showers likely with a chance of tstms through the
night.
.SUN...NW winds 5 kt. Waves less than 1 ft. A chance of showers. A
chance of tstms through the night.

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

$$

ANZ531-170800-
Chesapeake Bay from Pooles Island to Sandy Point-
136 PM EDT Wed Jul 16 2025

.THIS AFTERNOON...S winds 10 kt. Waves 1 ft. A chance of showers and
tstms.
.TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
Showers and tstms likely. Vsby 1 NM or less.
.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...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.

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

$$

ANZ538-170800-
Patapsco River including Baltimore Harbor-
136 PM EDT Wed Jul 16 2025

.THIS AFTERNOON...S winds 10 kt. Waves 1 ft. A chance of showers and
tstms.
.TONIGHT...SW winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms. Vsby 1 NM or less.
.THU...SW winds 5 to 10 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...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.

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

$$

ANZ539-170800-
Chester River to Queenstown MD-
136 PM EDT Wed Jul 16 2025

.THIS AFTERNOON...S winds 10 kt. Waves 1 ft. A chance of showers and
tstms.
.TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft. Showers and tstms likely. Vsby 1 NM or less.
.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...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.

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

$$

ANZ532-170800-
Chesapeake Bay from Sandy Point to North Beach-
136 PM EDT Wed Jul 16 2025

.THIS AFTERNOON...S winds 10 kt. Waves 1 ft. A chance of showers and
tstms. Vsby 1 NM or less.
.TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
Showers and tstms likely. Vsby 1 NM or less.
.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...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.

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

$$

ANZ540-170800-
Eastern Bay-
136 PM EDT Wed Jul 16 2025

.THIS AFTERNOON...S winds 10 kt. Waves 1 ft. A chance of showers and
tstms. Vsby 1 NM or less.
.TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft. Showers and tstms likely. Vsby 1 NM or less.
.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...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.

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

$$

ANZ533-170800-
Chesapeake Bay from North Beach to Drum Point-
136 PM EDT Wed Jul 16 2025

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

.THIS AFTERNOON...S winds 10 kt. Waves 1 ft. A chance of showers and
tstms. Vsby 1 NM or less.
.TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A
chance of showers and tstms. Vsby 1 NM or less.
.THU...SW winds 10 to 15 kt. Gusts up to 25 kt in the morning. 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...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.

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

$$

ANZ541-170800-
Choptank River to Cambridge MD and the Little Choptank River-
136 PM EDT Wed Jul 16 2025

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

.THIS AFTERNOON...S winds 10 kt. Waves 1 ft. A chance of showers and
tstms. Vsby 1 NM or less.
.TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft. A chance of showers and tstms. Vsby 1 NM or less.
.THU...SW winds 10 to 15 kt. Gusts up to 25 kt in the morning. 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...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.

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

$$

ANZ542-170800-
Patuxent River to Broomes Island MD-
136 PM EDT Wed Jul 16 2025

.THIS AFTERNOON...S winds 10 kt. Waves 1 ft. A chance of showers and
tstms.
.TONIGHT...SW winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft. A
chance of showers and tstms. Vsby 1 NM or less.
.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...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...S winds around 5 kt. Waves 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.

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

$$

ANZ534-170800-
Chesapeake Bay from Drum Point to Smith Point-
136 PM EDT Wed Jul 16 2025

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

.THIS AFTERNOON...S winds 10 kt. Waves 2 ft. A chance of showers and
tstms. Vsby 1 NM or less.
.TONIGHT...SW winds 15 to 20 kt with gusts to 25 kt. Waves 2 to
3 ft. A chance of showers and tstms. Vsby 1 NM or less.
.THU...SW winds 15 to 20 kt. Gusts up to 25 kt in the morning. Waves
2 to 3 ft.
.THU NIGHT...W winds 10 to 15 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...becoming S. 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.

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

$$

ANZ543-170800-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
136 PM EDT Wed Jul 16 2025

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

.THIS AFTERNOON...S winds 10 kt. Waves 1 ft. A chance of showers and
tstms. Vsby 1 NM or less.
.TONIGHT...SW winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft. A
chance of showers and tstms. Vsby 1 NM or less.
.THU...SW winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.THU NIGHT...W winds 10 to 15 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...becoming S. Waves 1 ft or less. A chance of
showers. A chance of tstms.
.SUN...W winds 5 to 10 kt...becoming N after midnight. Waves 1 ft. A
chance of showers. A chance of tstms.

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

$$