491
FZUS51 KLWX 170533
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
133 AM EDT Tue Jun 17 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.

ANZ500-172000-
133 AM EDT Tue Jun 17 2025

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

A warm front will slowly lift north across the waters today into
Wednesday. A stronger cold front crosses the waters Thursday into
Friday. Daily shower and thunderstorm chances are expected to
continue during this time.High pressure returns to the waters this
weekend. Small Craft Advisories may be needed at times Wednesday
night through Friday.

$$

ANZ535-172000-
Tidal Potomac from Key Bridge to Indian Head-
133 AM EDT Tue Jun 17 2025

.OVERNIGHT...E winds 5 kt. Waves less than 1 ft. A slight chance of
showers. Patchy fog. Vsby 1 to 3 NM.
.TUE...SE winds around 5 kt. Waves 1 ft. A chance of showers and
tstms. Patchy fog. Vsby 1 to 3 NM.
.TUE NIGHT...S winds around 5 kt. Waves 1 ft. A chance of showers
and tstms. Vsby 1 NM or less.
.WED...SW winds 5 to 10 kt. Waves 1 ft. Showers likely with a chance
of tstms.
.WED NIGHT...SW winds 5 to 10 kt. Waves 1 ft.
.THU...SW winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft. A chance
of showers and tstms.
.THU NIGHT...W winds 5 to 10 kt. Waves 1 ft.
.FRI...W winds around 5 kt. Waves 1 ft or less.
.SAT...SW winds around 5 kt. Waves 1 ft.

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

$$

ANZ536-172000-
Tidal Potomac from Indian Head to Cobb Island-
133 AM EDT Tue Jun 17 2025

.OVERNIGHT...E winds 5 kt. Waves less than 1 ft. A chance of
showers. Patchy fog. Vsby 1 to 3 NM.
.TUE...SE winds 5 kt. Waves less than 1 ft. A chance of showers and
tstms. Patchy fog. Vsby 1 to 3 NM.
.TUE NIGHT...S winds 5 kt. Waves less than 1 ft. A chance of showers
and tstms.
.WED...SW winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.
.WED NIGHT...SW winds 5 to 10 kt. Waves 1 ft.
.THU...SW winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft. A chance
of showers and tstms.
.THU NIGHT...W winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.FRI...W winds around 5 kt. Waves 1 ft or less.
.SAT...SW winds around 5 kt. Waves 1 ft.

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

$$

ANZ537-172000-
Tidal Potomac from Cobb Island to Smith Point-
133 AM EDT Tue Jun 17 2025

.OVERNIGHT...E winds 5 kt. Waves less than 1 ft. A chance of
showers. Patchy fog. Vsby 1 to 3 NM.
.TUE...SE winds 5 to 10 kt. Waves 1 ft. A chance of showers. Patchy
fog. Vsby 1 to 3 NM.
.TUE NIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.
.WED...SW winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft. A chance
of showers and tstms.
.WED NIGHT...SW winds 10 kt. Waves 1 ft.
.THU...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. A
chance of showers and tstms.
.THU NIGHT...W winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.
.FRI...W winds around 5 kt. Waves 1 ft or less.
.SAT...S winds 5 to 10 kt. Waves 1 ft or less.

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

$$

ANZ530-172000-
Chesapeake Bay north of Pooles Island-
133 AM EDT Tue Jun 17 2025

.OVERNIGHT...E winds 5 kt. Waves less than 1 ft. A slight chance of
showers. Patchy fog. Vsby 1 to 3 NM.
.TUE...SE winds 5 kt. Waves less than 1 ft. Patchy fog. Vsby 1 to
3 NM.
.TUE NIGHT...S winds 5 kt. Waves less than 1 ft. A chance of showers
and tstms. Vsby 1 NM or less.
.WED...SW winds 5 to 10 kt. Waves 1 ft. Showers likely with a chance
of tstms.
.WED NIGHT...SW winds 5 kt. Waves less than 1 ft.
.THU...SW winds 5 to 10 kt with gusts to 20 kt. Waves 1 to 2 ft. A
chance of showers and tstms.
.THU NIGHT...W winds 5 to 10 kt. Waves 1 ft.
.FRI...W winds around 5 kt. Waves 1 ft.
.SAT...SW winds around 5 kt. Waves 1 ft.

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

$$

ANZ531-172000-
Chesapeake Bay from Pooles Island to Sandy Point-
133 AM EDT Tue Jun 17 2025

.OVERNIGHT...E winds 5 kt. Waves less than 1 ft. A slight chance of
showers. Patchy fog. Vsby 1 to 3 NM.
.TUE...SE winds 5 kt. Waves less than 1 ft. A chance of showers.
Patchy fog. Vsby 1 to 3 NM.
.TUE NIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms. Vsby 1 NM or less.
.WED...SW winds 5 to 10 kt. Waves 1 ft. Showers likely with a chance
of tstms.
.WED NIGHT...SW winds 5 to 10 kt. Waves 1 ft.
.THU...SW winds 5 to 10 kt. Waves 1 to 2 ft. A chance of showers and
tstms.
.THU NIGHT...W winds 5 to 10 kt. Waves 1 to 2 ft.
.FRI...W winds 5 to 10 kt. Waves 1 ft or less.
.SAT...SW winds 5 to 10 kt. Waves 1 ft or less.

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

$$

ANZ538-172000-
Patapsco River including Baltimore Harbor-
133 AM EDT Tue Jun 17 2025

.OVERNIGHT...E winds 5 kt. Waves flat. A slight chance of showers.
Patchy fog. Vsby 1 to 3 NM.
.TUE...SE winds 5 kt. Waves less than 1 ft. A chance of showers and
tstms. Patchy fog. Vsby 1 to 3 NM.
.TUE NIGHT...S winds 5 kt. Waves less than 1 ft. A chance of showers
and tstms. Vsby 1 NM or less.
.WED...SW winds 5 to 10 kt. Waves 1 ft or less. Showers likely with
a chance of tstms.
.WED NIGHT...SW winds 5 kt. Waves less than 1 ft.
.THU...SW winds 5 to 10 kt. Waves 1 ft. Showers likely with a chance
of tstms.
.THU NIGHT...W winds 5 to 10 kt. Waves 1 ft.
.FRI...W winds around 5 kt. Waves 1 ft or less.
.SAT...SW winds around 5 kt. Waves 1 ft or less.

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

$$

ANZ539-172000-
Chester River to Queenstown MD-
133 AM EDT Tue Jun 17 2025

.OVERNIGHT...E winds 5 kt. Waves flat. A slight chance of showers.
Patchy fog. Vsby 1 to 3 NM.
.TUE...SE winds 5 kt. Waves flat. Patchy fog. Vsby 1 to 3 NM.
.TUE NIGHT...S winds 5 kt. Waves less than 1 ft. A chance of showers
and tstms. Vsby 1 NM or less.
.WED...SW winds 5 to 10 kt. Waves 1 ft. Showers likely with a chance
of tstms.
.WED NIGHT...SW winds 5 to 10 kt. Waves 1 ft.
.THU...SW winds 10 kt. Waves 1 ft. A chance of showers and tstms.
.THU NIGHT...W winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.FRI...W winds around 5 kt. Waves 1 ft or less.
.SAT...SW winds 5 to 10 kt. Waves 1 ft or less.

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

$$

ANZ532-172000-
Chesapeake Bay from Sandy Point to North Beach-
133 AM EDT Tue Jun 17 2025

.OVERNIGHT...E winds 5 kt. Waves less than 1 ft. A slight chance of
showers. Patchy fog. Vsby 1 to 3 NM.
.TUE...SE winds 5 kt. Waves less than 1 ft. A chance of showers.
Patchy fog. Vsby 1 to 3 NM.
.TUE NIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms. Vsby 1 NM or less.
.WED...SW winds 5 to 10 kt. Waves 1 ft. Showers likely with a chance
of tstms.
.WED NIGHT...SW winds 5 to 10 kt. Waves 1 ft.
.THU...SW winds 10 kt. Waves 1 to 2 ft. A chance of showers and
tstms.
.THU NIGHT...W winds 5 to 10 kt. Waves 1 to 2 ft. A chance of
showers.
.FRI...W winds 5 kt. Waves less than 1 ft.
.SAT...SW winds 5 to 10 kt. Waves 1 ft or less.

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

$$

ANZ540-172000-
Eastern Bay-
133 AM EDT Tue Jun 17 2025

.OVERNIGHT...E winds 5 kt. Waves flat. A slight chance of showers.
Patchy fog. Vsby 1 to 3 NM.
.TUE...SE winds 5 kt. Waves flat. Patchy fog. Vsby 1 to 3 NM.
.TUE NIGHT...S winds 5 kt. Waves less than 1 ft. A chance of showers
and tstms. Vsby 1 NM or less.
.WED...SW winds 5 to 10 kt. Waves 1 ft. Showers likely with a chance
of tstms.
.WED NIGHT...SW winds 5 to 10 kt. Waves 1 ft.
.THU...SW winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.
.THU NIGHT...W winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.FRI...W winds around 5 kt. Waves 1 ft or less.
.SAT...SW winds 5 to 10 kt. Waves 1 ft or less.

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

$$

ANZ533-172000-
Chesapeake Bay from North Beach to Drum Point-
133 AM EDT Tue Jun 17 2025

.OVERNIGHT...E winds 5 kt. Waves less than 1 ft. A slight chance of
showers. Patchy fog. Vsby 1 to 3 NM.
.TUE...SE winds 5 to 10 kt. Waves 1 ft. A chance of showers. Patchy
fog. Vsby 1 to 3 NM.
.TUE NIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms. Vsby 1 NM or less.
.WED...SW winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.
.WED NIGHT...SW winds 5 to 10 kt. Waves 1 ft.
.THU...SW winds 10 kt. Waves 1 to 2 ft. A chance of showers and
tstms.
.THU NIGHT...W winds 5 to 10 kt. Waves 1 to 2 ft. A chance of
showers.
.FRI...W winds 5 kt. Waves less than 1 ft.
.SAT...SW winds 5 to 10 kt. Waves 1 ft or less.

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

$$

ANZ541-172000-
Choptank River to Cambridge MD and the Little Choptank River-
133 AM EDT Tue Jun 17 2025

.OVERNIGHT...E winds 5 kt. Waves less than 1 ft. A chance of
showers. Patchy fog. Vsby 1 to 3 NM.
.TUE...SE winds 5 kt. Waves less than 1 ft. Patchy fog. Vsby 1 to
3 NM.
.TUE NIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.
.WED...SW winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.
.WED NIGHT...SW winds 5 to 10 kt. Waves 1 ft.
.THU...SW winds 10 kt. Waves 1 ft. A chance of showers and tstms.
.THU NIGHT...W winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.FRI...W winds 5 kt. Waves less than 1 ft.
.SAT...SW winds 5 to 10 kt. Waves 1 ft or less.

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

$$

ANZ542-172000-
Patuxent River to Broomes Island MD-
133 AM EDT Tue Jun 17 2025

.OVERNIGHT...E winds 5 kt. Waves less than 1 ft. A slight chance of
showers. Patchy fog. Vsby 1 to 3 NM.
.TUE...SE winds 5 kt. Waves less than 1 ft. Patchy fog. Vsby 1 to
3 NM.
.TUE NIGHT...S winds 5 kt. Waves less than 1 ft. A chance of showers
and tstms.
.WED...SW winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.
.WED NIGHT...SW winds 5 to 10 kt. Waves 1 ft.
.THU...SW winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.
.THU NIGHT...W winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.FRI...W winds around 5 kt. Waves 1 ft.
.SAT...SW winds 5 to 10 kt. Waves 1 ft.

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

$$

ANZ534-172000-
Chesapeake Bay from Drum Point to Smith Point-
133 AM EDT Tue Jun 17 2025

.OVERNIGHT...E winds 5 kt. Waves less than 1 ft. A slight chance of
showers. Patchy fog. Vsby 1 to 3 NM.
.TUE...SE winds 5 to 10 kt. Waves 1 ft. Patchy fog. Vsby 1 to 3 NM.
.TUE NIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.
.WED...SW winds 10 kt. Waves 2 ft. A chance of showers.
.WED NIGHT...SW winds 10 to 15 kt. Waves 2 ft.
.THU...SW winds 10 to 15 kt. Waves 2 ft. A chance of showers and
tstms.
.THU NIGHT...W winds 10 to 15 kt. Waves 1 to 2 ft. A chance of
showers and tstms.
.FRI...W winds 5 to 10 kt...becoming SW. Waves 1 ft.
.SAT...S winds 5 to 10 kt. Waves 1 to 2 ft.

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

$$

ANZ543-172000-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
133 AM EDT Tue Jun 17 2025

.OVERNIGHT...E winds 5 kt. Waves less than 1 ft. A chance of
sprinkles. Patchy fog. Vsby 1 to 3 NM.
.TUE...SE winds 5 kt. Waves less than 1 ft. Patchy fog. Vsby 1 NM or
less.
.TUE NIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.
.WED...SW winds 10 to 15 kt. Waves 1 ft.
.WED NIGHT...SW winds 10 to 15 kt. Waves 1 ft.
.THU...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. A
chance of showers and tstms.
.THU NIGHT...W winds 10 to 15 kt. Waves 1 ft. A chance of showers
and tstms.
.FRI...W winds 5 to 10 kt...becoming SW. Waves 1 ft.
.SAT...SW winds 5 to 10 kt. Waves 1 ft or less.

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

$$