910
FZUS51 KLWX 151136
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
736 AM EDT Tue Jul 15 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.

ANZ500-152000-
736 AM EDT Tue Jul 15 2025

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

High pressure will remain in place offshore through the week. A weak
 front will approach the waters from the west today before moving
through late Tuesday. This system stalls nearby before returning
northward as a warm front on Wednesday. Small Craft Advisories may
be needed Wednesday evening into Thursday, particularly across the
southern waters.

$$

ANZ535-152000-
Tidal Potomac from Key Bridge to Indian Head-
736 AM EDT Tue Jul 15 2025

.TODAY...W winds around 5 kt. Waves 1 ft or less. Patchy fog this
morning. A chance of showers and tstms this afternoon. Vsby 1 to
3 NM this morning.
.TONIGHT...S winds around 5 kt. Waves 1 ft. A chance of showers and
tstms.
.WED...SW winds 5 to 10 kt. Waves 1 ft. Showers and tstms likely.
Vsby 1 NM or less.
.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...SW winds around 5 kt. Waves 1 ft.
.FRI...W winds around 5 kt. Waves 1 ft. Showers likely with a chance
of tstms through the night. A chance of showers and tstms after
midnight.
.SAT...E winds around 5 kt. Waves 1 ft or less. A chance of showers
and tstms.

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

$$

ANZ536-152000-
Tidal Potomac from Indian Head to Cobb Island-
736 AM EDT Tue Jul 15 2025

.TODAY...SW winds around 5 kt. Waves 1 ft or less. Patchy fog this
morning. A slight chance of showers and tstms this morning, then
showers likely with a chance of tstms this afternoon. Vsby 1 to
3 NM...decreasing to 1 NM or less this afternoon.
.TONIGHT...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. 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...SW winds 5 to 10 kt. Waves 1 ft.
.FRI...W 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.

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

$$

ANZ537-152000-
Tidal Potomac from Cobb Island to Smith Point-
736 AM EDT Tue Jul 15 2025

.TODAY...SW winds 5 kt. Waves less than 1 ft. Patchy fog this
morning. A chance of showers and tstms this morning, then showers
and tstms likely this afternoon with vsby 1 NM or less.
.TONIGHT...S winds 5 to 10 kt. Waves 1 ft. Showers and tstms likely.
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 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft.
.THU...SW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A
chance of showers and tstms.
.THU NIGHT...SW winds 5 to 10 kt. Waves 1 ft.
.FRI...W winds 5 to 10 kt. Waves 1 ft or less. A chance of showers
and tstms.
.SAT...E winds 5 kt. Waves flat. A chance of tstms through the
night. A chance of showers.

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

$$

ANZ530-152000-
Chesapeake Bay north of Pooles Island-
736 AM EDT Tue Jul 15 2025

.TODAY...W winds 5 kt. Waves flat. Patchy fog this morning. A chance
of showers and tstms this afternoon. Vsby 1 to 3 NM this morning.
.TONIGHT...S winds 5 kt. Waves flat. A chance of showers and tstms.
Vsby 1 NM or less.
.WED...SW winds 5 to 10 kt. Waves 1 ft. Showers and tstms likely.
Vsby 1 NM or less.
.WED NIGHT...SW winds 5 to 10 kt. Waves 1 ft. A chance of showers
and tstms.
.THU...SW winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.
.THU NIGHT...SW winds 5 to 10 kt. Waves 1 ft.
.FRI...NW winds 5 kt. Waves less than 1 ft. A chance of showers and
tstms through the night. A chance of showers after midnight.
.SAT...E winds 5 kt. Waves flat. A chance of showers.

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

$$

ANZ531-152000-
Chesapeake Bay from Pooles Island to Sandy Point-
736 AM EDT Tue Jul 15 2025

.TODAY...NE winds 5 kt. Waves flat. Patchy fog this morning. A
slight chance of showers this morning, then a chance of showers and
tstms this afternoon. Vsby 1 to 3 NM this morning.
.TONIGHT...S winds 5 kt. Waves less than 1 ft. A chance of showers
and tstms. Vsby 1 NM or less.
.WED...S winds 5 to 10 kt. Waves 1 ft. Showers and tstms likely.
Vsby 1 NM or less.
.WED NIGHT...SW winds 10 kt. Waves 1 ft. A chance of showers and
tstms.
.THU...SW winds 10 kt. Waves 1 ft. A chance of showers and tstms.
.THU NIGHT...SW winds 5 to 10 kt. Waves 1 ft.
.FRI...NW winds 5 kt. Waves less than 1 ft. A chance of showers and
tstms.
.SAT...E winds 5 kt. Waves less than 1 ft. A chance of showers and
tstms through the night. A chance of showers after midnight.

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

$$

ANZ538-152000-
Patapsco River including Baltimore Harbor-
736 AM EDT Tue Jul 15 2025

.TODAY...E winds around 5 kt. Waves flat. Patchy fog this morning. A
chance of showers and tstms this afternoon. Vsby 1 to 3 NM this
morning.
.TONIGHT...S winds around 5 kt. Waves flat. A chance of showers and
tstms.
.WED...S winds 5 to 10 kt. Waves 1 ft or less. Showers and tstms
likely.
.WED NIGHT...SW winds 5 to 10 kt. Waves 1 ft. A chance of showers
and tstms.
.THU...SW winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.
.THU NIGHT...SW winds 5 kt. Waves less than 1 ft.
.FRI...NW winds around 5 kt. Waves 1 ft or less. Showers likely
through the night. A chance of tstms. A chance of showers after
midnight.
.SAT...E winds 5 kt. Waves flat. A chance of showers and tstms
through the night. A chance of showers after midnight.

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

$$

ANZ539-152000-
Chester River to Queenstown MD-
736 AM EDT Tue Jul 15 2025

.TODAY...W winds 5 kt. Waves flat. A slight chance of showers and
tstms this morning, then a chance of showers and tstms this
afternoon. Vsby 1 to 3 NM this morning.
.TONIGHT...S winds 5 kt. Waves flat. A chance of showers and tstms.
Vsby 1 NM or less.
.WED...SW winds 5 to 10 kt. Waves 1 ft. Showers and tstms likely.
.WED NIGHT...SW winds 5 to 10 kt. Waves 1 ft. A chance of showers
and tstms.
.THU...SW winds 10 kt. Waves 1 ft. A chance of showers and tstms.
.THU NIGHT...SW winds 5 to 10 kt. Waves 1 ft.
.FRI...NW winds around 5 kt. Waves 1 ft or less. A chance of showers
and tstms.
.SAT...E winds 5 kt. Waves flat. A chance of tstms through the
night. A chance of showers.

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

$$

ANZ532-152000-
Chesapeake Bay from Sandy Point to North Beach-
736 AM EDT Tue Jul 15 2025

.TODAY...SW winds 5 kt. Waves less than 1 ft. A slight chance of
showers and tstms this morning, then a chance of showers and tstms
this afternoon.
.TONIGHT...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 and tstms likely.
.WED NIGHT...SW winds 10 to 15 kt. Waves 1 to 2 ft. A chance of
showers and tstms.
.THU...SW winds 10 to 15 kt. Waves 1 to 2 ft. A chance of showers
and tstms.
.THU NIGHT...SW winds 5 to 10 kt. Waves 1 ft.
.FRI...NW winds 5 to 10 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 tstms through
the night. A chance of showers.

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

$$

ANZ540-152000-
Eastern Bay-
736 AM EDT Tue Jul 15 2025

.TODAY...W winds 5 kt. Waves flat. A chance of showers. A slight
chance of tstms this morning, then a chance of tstms this afternoon.
.TONIGHT...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 and tstms likely.
.WED NIGHT...SW winds 10 kt. Waves 1 ft. A chance of showers and
tstms.
.THU...SW winds 10 kt. Waves 1 to 2 ft. A chance of showers and
tstms.
.THU NIGHT...SW winds 5 to 10 kt. Waves 1 ft.
.FRI...NW winds 5 kt. Waves less than 1 ft. A chance of showers and
tstms.
.SAT...E winds 5 kt. Waves flat. A chance of tstms through the
night. A chance of showers.

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

$$

ANZ533-152000-
Chesapeake Bay from North Beach to Drum Point-
736 AM EDT Tue Jul 15 2025

.TODAY...SW winds 5 kt. Waves less than 1 ft. A chance of showers. A
slight chance of tstms this morning, then a chance of tstms this
afternoon.
.TONIGHT...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 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft.
.THU...SW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A
chance of showers.
.THU NIGHT...SW winds 5 to 10 kt. Waves 1 ft.
.FRI...W winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.
.SAT...E 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.

$$

ANZ541-152000-
Choptank River to Cambridge MD and the Little Choptank River-
736 AM EDT Tue Jul 15 2025

.TODAY...W winds 5 kt. Waves flat. A chance of showers and tstms.
.TONIGHT...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. Vsby 1 NM or less.
.WED NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft. A chance of showers and tstms.
.THU...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft. A
chance of showers.
.THU NIGHT...SW winds 5 to 10 kt. Waves 1 ft.
.FRI...W winds 5 to 10 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 tstms through
the night. A chance of showers.

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

$$

ANZ542-152000-
Patuxent River to Broomes Island MD-
736 AM EDT Tue Jul 15 2025

.TODAY...SW winds around 5 kt. Waves 1 ft. Patchy fog this morning.
A chance of showers and tstms.
.TONIGHT...S winds 5 kt. Waves less than 1 ft. Showers and tstms
likely.
.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.
.THU NIGHT...SW winds 5 to 10 kt. Waves 1 ft.
.FRI...W 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 through the night. A chance of showers after midnight.

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

$$

ANZ534-152000-
Chesapeake Bay from Drum Point to Smith Point-
736 AM EDT Tue Jul 15 2025

.TODAY...SW winds 5 kt...becoming S late. Waves 1 ft. A chance of
showers and tstms this morning, then showers and tstms likely this
afternoon.
.TONIGHT...S winds 5 to 10 kt. Waves 1 ft. Showers and tstms likely.
Vsby 1 NM or less.
.WED...SW winds 10 kt. Waves 2 ft. A chance of showers and tstms.
Vsby 1 NM or less.
.WED NIGHT...SW winds 15 to 20 kt. Waves 2 to 3 ft.
.THU...SW winds 15 to 20 kt. Waves 2 to 3 ft.
.THU NIGHT...SW winds 10 to 15 kt. Waves 2 ft.
.FRI...W winds 5 to 10 kt. Waves 1 to 2 ft. A chance of showers and
tstms.
.SAT...SE 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.

$$

ANZ543-152000-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
736 AM EDT Tue Jul 15 2025

.TODAY...SW winds 5 kt...becoming S late. Waves 1 ft. A chance of
showers and tstms. Vsby 1 NM or less this morning.
.TONIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms. Vsby 1 NM or less.
.WED...SW winds 10 to 15 kt. Waves 1 ft. A chance of showers and
tstms. Vsby 1 NM or less.
.WED NIGHT...SW winds 15 to 20 kt. Waves 2 ft.
.THU...SW winds 15 to 20 kt. Waves 2 ft.
.THU NIGHT...SW winds 10 to 15 kt. Waves 1 ft.
.FRI...W winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.
.SAT...S 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.

$$