864
FZUS51 KLWX 120920
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
Issued by National Weather Service State College PA
520 AM EDT Thu Jun 12 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.

ANZ500-122130-
520 AM EDT Thu Jun 12 2025

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

Weak high pressure will remain nearby through this afternoon before
moving offshore tonight. A cold front will approach the waters
Friday through Saturday before passing through Sunday. The boundary
will stall nearby for early next week.


$$

ANZ535-122130-
Tidal Potomac from Key Bridge to Indian Head-
520 AM EDT Thu Jun 12 2025

.TODAY...SW winds around 5 kt. Waves 1 ft or less.
.TONIGHT...S winds 5 kt. Waves less than 1 ft.
.FRI...S winds 5 kt. Waves less than 1 ft. Showers likely with a
chance of tstms.
.FRI NIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.
.SAT...W winds 5 kt. Waves less than 1 ft. Showers likely with a
chance of tstms.
.SAT NIGHT...E winds 5 to 10 kt. Waves 1 ft. Showers likely with a
chance of tstms.
.SUN...E winds 5 to 10 kt. Waves 1 ft. A chance of showers in the
morning, then showers likely with a chance of tstms.
.MON...E winds 5 to 10 kt. Waves 1 ft. A chance of showers in the
morning, then showers likely with a chance of tstms through the
night. A chance of showers after midnight.

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

$$

ANZ536-122130-
Tidal Potomac from Indian Head to Cobb Island-
520 AM EDT Thu Jun 12 2025

.TODAY...SW winds 5 kt. Waves less than 1 ft.
.TONIGHT...S winds 5 kt. Waves less than 1 ft.
.FRI...S winds 5 to 10 kt. Waves 1 ft. Showers likely with a chance
of tstms.
.FRI NIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.
.SAT...W winds 5 kt. Waves less than 1 ft. Showers likely with a
chance of tstms.
.SAT NIGHT...SE winds 5 to 10 kt. Waves 1 ft. Showers likely with a
chance of tstms.
.SUN...SE winds 5 to 10 kt. Waves 1 ft. A chance of showers in the
morning, then showers likely with a chance of tstms.
.MON...E winds 5 to 10 kt. Waves 1 ft. A chance of showers in the
morning, then showers likely with a chance of tstms through the
night. A chance of showers after midnight.

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

$$

ANZ537-122130-
Tidal Potomac from Cobb Island to Smith Point-
520 AM EDT Thu Jun 12 2025

.TODAY...SW winds 5 kt...becoming SE this afternoon. Waves 1 ft.
.TONIGHT...S winds 5 to 10 kt. Waves 1 ft.
.FRI...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.
.FRI NIGHT...S winds 5 to 10 kt. Waves 1 ft. Showers likely with a
chance of tstms.
.SAT...SW winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.
.SAT NIGHT...SE winds 5 to 10 kt. Waves 1 ft. Showers likely with a
chance of tstms.
.SUN...SE winds 5 to 10 kt. Waves 1 ft. A chance of showers in the
morning, then showers likely with a chance of tstms.
.MON...E winds 5 to 10 kt. Waves 1 ft. A chance of showers in the
morning, then showers likely with a chance of tstms through the
night. A chance of showers after midnight.

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

$$

ANZ530-122130-
Chesapeake Bay north of Pooles Island-
520 AM EDT Thu Jun 12 2025

.TODAY...SW winds 5 kt. Waves less than 1 ft.
.TONIGHT...SW winds 5 to 10 kt...becoming NE late. Waves 1 ft.
.FRI...E winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.
.FRI NIGHT...SE winds 5 to 10 kt. Waves 1 ft. Showers likely with a
chance of tstms.
.SAT...NE winds 5 kt. Waves less than 1 ft. A chance of showers and
tstms.
.SAT NIGHT...E winds 5 to 10 kt. Waves 1 ft. Showers likely with a
chance of tstms.
.SUN...E winds 5 to 10 kt. Waves 1 ft. A chance of showers in the
morning, then showers likely.
.MON...E winds 5 to 10 kt. Waves 1 ft. A chance of showers.

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

$$

ANZ531-122130-
Chesapeake Bay from Pooles Island to Sandy Point-
520 AM EDT Thu Jun 12 2025

.TODAY...SW winds 5 kt...becoming S late. Waves 1 ft.
.TONIGHT...S winds 5 to 10 kt. Waves 1 ft.
.FRI...E winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.
.FRI NIGHT...SE winds 5 to 10 kt. Waves 1 ft. Showers likely with a
chance of tstms.
.SAT...SE winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.
.SAT NIGHT...E winds 5 to 10 kt. Waves 1 ft. Showers likely with a
chance of tstms.
.SUN...E winds 5 to 10 kt. Waves 1 ft. A chance of showers in the
morning, then showers likely.
.MON...E winds 5 to 10 kt. Waves 1 ft. A chance of showers in the
morning, then showers likely through the night. A chance of showers
after midnight.

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

$$

ANZ538-122130-
Patapsco River including Baltimore Harbor-
520 AM EDT Thu Jun 12 2025

.TODAY...SW winds around 5 kt. Waves 1 ft or less.
.TONIGHT...S winds 5 kt. Waves less than 1 ft.
.FRI...E winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.
.FRI NIGHT...SE winds 5 to 10 kt. Waves 1 ft. Showers likely with a
chance of tstms.
.SAT...E winds 5 to 10 kt. Waves 1 ft. Showers likely with a chance
of tstms.
.SAT NIGHT...E winds 5 kt. Waves less than 1 ft. Showers likely with
a chance of tstms.
.SUN...E winds 5 to 10 kt. Waves 1 ft. A chance of showers in the
morning, then showers likely.
.MON...E winds 5 to 10 kt. Waves 1 ft. A chance of showers in the
morning, then showers likely through the night. A chance of showers
after midnight.

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

$$

ANZ539-122130-
Chester River to Queenstown MD-
520 AM EDT Thu Jun 12 2025

.TODAY...SW winds 5 kt. Waves less than 1 ft.
.TONIGHT...S winds 5 to 10 kt. Waves 1 ft.
.FRI...SE winds 5 kt. Waves less than 1 ft. A chance of showers and
tstms.
.FRI NIGHT...SE winds 5 to 10 kt. Waves 1 ft. Showers likely with a
chance of tstms.
.SAT...S winds 5 kt. Waves less than 1 ft. A chance of showers and
tstms.
.SAT NIGHT...E winds 5 kt. Waves less than 1 ft. Showers likely with
a chance of tstms.
.SUN...E winds 5 to 10 kt. Waves 1 ft. A chance of showers in the
morning, then showers likely.
.MON...E winds 5 to 10 kt. Waves 1 ft. A chance of showers.

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

$$

ANZ532-122130-
Chesapeake Bay from Sandy Point to North Beach-
520 AM EDT Thu Jun 12 2025

.TODAY...SW winds 5 kt...becoming S late. Waves 1 ft.
.TONIGHT...S winds 5 to 10 kt. Waves 1 ft.
.FRI...SE winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.
.FRI NIGHT...S winds 5 to 10 kt. Waves 1 ft. Showers likely with a
chance of tstms.
.SAT...S winds 5 to 10 kt. Waves 1 ft. A chance of tstms.
.SAT NIGHT...E winds 5 to 10 kt. Waves 1 ft. Showers likely with a
chance of tstms.
.SUN...E winds 5 to 10 kt. Waves 1 ft. A chance of showers in the
morning, then showers likely with a chance of tstms.
.MON...E winds 5 to 10 kt. Waves 1 ft. A chance of showers in the
morning, then showers likely through the night. A chance of showers
after midnight.

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

$$

ANZ540-122130-
Eastern Bay-
520 AM EDT Thu Jun 12 2025

.TODAY...SW winds 5 to 10 kt. Waves 1 ft.
.TONIGHT...S winds 5 to 10 kt. Waves 1 ft.
.FRI...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.
.FRI NIGHT...S winds 5 to 10 kt. Waves 1 ft. Showers likely with a
chance of tstms.
.SAT...S winds 5 kt. Waves less than 1 ft. A chance of showers and
tstms.
.SAT NIGHT...E winds 5 kt. Waves less than 1 ft. Showers likely with
a chance of tstms.
.SUN...E winds 5 to 10 kt. Waves 1 ft. A chance of showers in the
morning, then showers likely with a chance of tstms.
.MON...E winds 5 to 10 kt. Waves 1 ft. A chance of showers.

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

$$

ANZ533-122130-
Chesapeake Bay from North Beach to Drum Point-
520 AM EDT Thu Jun 12 2025

.TODAY...SW winds 5 kt...becoming S this afternoon. Waves 1 to 2 ft.
.TONIGHT...S winds 5 to 10 kt. Waves 2 ft.
.FRI...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.
.FRI NIGHT...S winds 5 to 10 kt. Waves 1 to 2 ft. Showers likely
with a chance of tstms.
.SAT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.
.SAT NIGHT...E winds 5 to 10 kt. Waves 1 ft. Showers likely with a
chance of tstms.
.SUN...SE winds 5 to 10 kt. Waves 1 to 2 ft. A chance of showers in
the morning, then showers likely with a chance of tstms.
.MON...E winds 5 to 10 kt. Waves 1 to 2 ft. A chance of showers in
the morning, then showers likely with a chance of tstms through the
night. A chance of showers after midnight.

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

$$

ANZ541-122130-
Choptank River to Cambridge MD and the Little Choptank River-
520 AM EDT Thu Jun 12 2025

.TODAY...SW winds 5 to 10 kt. Waves 1 ft.
.TONIGHT...S winds 5 to 10 kt. Waves 1 ft.
.FRI...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.
.FRI NIGHT...S winds 5 to 10 kt. Waves 1 ft. Showers likely with a
chance of tstms.
.SAT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.
.SAT NIGHT...E winds 5 to 10 kt. Waves 1 ft. Showers likely with a
chance of tstms.
.SUN...SE winds 5 to 10 kt. Waves 1 ft. A chance of showers in the
morning, then showers likely with a chance of tstms.
.MON...E winds 5 to 10 kt. 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.

$$

ANZ542-122130-
Patuxent River to Broomes Island MD-
520 AM EDT Thu Jun 12 2025

.TODAY...SW winds 5 kt...becoming S late. Waves 1 ft.
.TONIGHT...S winds 5 to 10 kt. Waves 1 ft.
.FRI...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.
.FRI NIGHT...S winds 5 to 10 kt. Waves 1 ft. Showers likely with a
chance of tstms.
.SAT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.
.SAT NIGHT...SE winds 5 to 10 kt. Waves 1 ft. Showers likely with a
chance of tstms.
.SUN...SE winds 5 to 10 kt. Waves 1 ft. A chance of showers in the
morning, then showers likely with a chance of tstms.
.MON...E winds 5 to 10 kt. Waves 1 ft. A chance of showers in the
morning, then showers likely with a chance of tstms through the
night. A chance of showers after midnight.

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

$$

ANZ534-122130-
Chesapeake Bay from Drum Point to Smith Point-
520 AM EDT Thu Jun 12 2025

.TODAY...SW winds 5 kt...becoming S this afternoon. Waves 1 to 2 ft.
.TONIGHT...S winds 10 to 15 kt. Waves 2 ft.
.FRI...S winds 5 to 10 kt. Waves 1 to 2 ft. A chance of showers and
tstms.
.FRI NIGHT...S winds 5 to 10 kt. Waves 2 ft. Showers likely with a
chance of tstms.
.SAT...S winds 5 to 10 kt. Waves 1 to 2 ft. A chance of showers and
tstms.
.SAT NIGHT...SE winds 5 to 10 kt. Waves 2 ft. Showers likely with a
chance of tstms.
.SUN...SE winds 5 to 10 kt. Waves 2 ft. A chance of showers in the
morning, then showers likely with a chance of tstms.
.MON...E winds 10 kt. Waves 2 ft. A chance of showers.

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

$$

ANZ543-122130-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
520 AM EDT Thu Jun 12 2025

.TODAY...SW winds 5 to 10 kt. Waves 1 to 2 ft.
.TONIGHT...S winds 10 to 15 kt. Waves 2 ft.
.FRI...S winds 5 to 10 kt. Waves 1 to 2 ft. A chance of showers and
tstms.
.FRI NIGHT...S winds 5 to 10 kt. Waves 2 ft. Showers likely with a
chance of tstms.
.SAT...SW winds 5 to 10 kt. Waves 2 ft. A chance of showers and
tstms.
.SAT NIGHT...SE winds 10 kt. Waves 2 ft. Showers likely with a
chance of tstms.
.SUN...SE winds 10 kt. Waves 1 to 2 ft. A chance of showers through
the day. A chance of tstms. Showers likely through the night.
.MON...E winds 10 kt. Waves 1 ft. A chance of showers.

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

$$