507
FZUS51 KLWX 240626
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
226 AM EDT Mon Aug 24 2026

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.

ANZ500-242000-
226 AM EDT Mon Aug 24 2026

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

High pressure will gradually build toward the waters from the west
early this week, before shifting offshore later this week. Winds may
 near low-end SCA levels in southerly flow on Wednesday.

$$

ANZ535-242000-
Tidal Potomac from Key Bridge to Indian Head-
226 AM EDT Mon Aug 24 2026

.OVERNIGHT...Light winds. Waves flat.
.MON...W winds around 5 kt. Waves 1 ft.
.MON NIGHT...NW winds around 5 kt. Waves 1 ft.
.TUE...NW winds around 5 kt. Waves 1 ft.
.TUE NIGHT...NW winds around 5 kt. Waves 1 ft or less.
.WED...SE winds around 5 kt. Waves 1 ft.
.WED NIGHT...S winds 5 kt. Waves less than 1 ft. A chance of
showers.
.THU...S 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.
.FRI...W winds around 5 kt. Waves 1 ft or less. A chance of showers
and tstms through the night.

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

$$

ANZ536-242000-
Tidal Potomac from Indian Head to Cobb Island-
226 AM EDT Mon Aug 24 2026

.OVERNIGHT...NW winds 5 kt. Waves flat.
.MON...W winds around 5 kt. Waves 1 ft.
.MON NIGHT...NW winds 5 kt. Waves less than 1 ft.
.TUE...NW winds around 5 kt. Waves 1 ft.
.TUE NIGHT...W winds around 5 kt. Waves 1 ft or less.
.WED...S winds around 5 kt. Waves 1 ft.
.WED NIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.THU...S winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.FRI...SW winds around 5 kt. Waves 1 ft. A chance of showers and
tstms through the night.

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

$$

ANZ537-242000-
Tidal Potomac from Cobb Island to Smith Point-
226 AM EDT Mon Aug 24 2026

.OVERNIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.MON...NW winds around 5 kt. Waves 1 ft or less.
.MON NIGHT...N winds 5 to 10 kt. Waves 1 ft.
.TUE...NW winds 5 to 10 kt. Waves 1 ft.
.TUE NIGHT...SW winds around 5 kt. Waves flat.
.WED...S winds 5 to 10 kt. Waves 1 ft or less.
.WED NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A
chance of showers.
.THU...S winds 5 to 10 kt. Waves 1 to 2 ft. A chance of showers
through the day. A chance of tstms. Showers likely through the
night.
.FRI...SW winds around 5 kt. Waves 1 ft or less. A chance of showers
and tstms through the night.

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

$$

ANZ530-242000-
Chesapeake Bay north of Pooles Island-
226 AM EDT Mon Aug 24 2026

.OVERNIGHT...W winds 5 kt. Waves flat.
.MON...W winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...NW winds 5 kt. Waves less than 1 ft.
.TUE...NW winds 5 kt. Waves less than 1 ft.
.TUE NIGHT...NW winds around 5 kt. Waves 1 ft or less.
.WED...SE winds around 5 kt. Waves 1 ft or less.
.WED NIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.THU...S winds 5 to 10 kt. Waves 1 ft. A chance of showers in the
morning, then showers likely with a chance of tstms.
.FRI...W winds around 5 kt. Waves flat. A chance of showers through
the night.

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

$$

ANZ531-242000-
Chesapeake Bay from Pooles Island to Sandy Point-
226 AM EDT Mon Aug 24 2026

.OVERNIGHT...W winds 5 kt. Waves less than 1 ft.
.MON...W winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.TUE...W winds 5 to 10 kt. Waves 1 ft.
.TUE NIGHT...NW winds around 5 kt. Waves 1 ft or less.
.WED...NE winds around 5 kt...becoming S in the afternoon. Waves
1 ft or less.
.WED NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A
chance of showers.
.THU...S winds 10 to 15 kt. Waves 1 to 2 ft. A chance of showers in
the morning, then showers likely with a chance of tstms.
.FRI...SW winds around 5 kt. Waves flat.

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

$$

ANZ538-242000-
Patapsco River including Baltimore Harbor-
226 AM EDT Mon Aug 24 2026

.OVERNIGHT...W winds 5 kt. Waves flat.
.MON...W winds 5 to 10 kt. Waves 1 ft or less.
.MON NIGHT...NW winds 5 kt. Waves less than 1 ft.
.TUE...W winds 5 kt. Waves less than 1 ft.
.TUE NIGHT...NW winds around 5 kt. Waves flat.
.WED...NE winds around 5 kt...becoming SE in the afternoon. Waves
1 ft or less.
.WED NIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.THU...S winds 10 to 15 kt...becoming SW around 5 kt after midnight.
Waves 1 ft. A chance of showers in the morning, then showers likely
with a chance of tstms.
.FRI...SW winds around 5 kt. Waves flat. A chance of showers through
the night.

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

$$

ANZ539-242000-
Chester River to Queenstown MD-
226 AM EDT Mon Aug 24 2026

.OVERNIGHT...W winds 5 kt. Waves less than 1 ft.
.MON...W winds around 5 kt. Waves 1 ft.
.MON NIGHT...NW winds 5 kt. Waves less than 1 ft.
.TUE...W winds 5 kt. Waves less than 1 ft.
.TUE NIGHT...NW winds around 5 kt. Waves 1 ft or less.
.WED...SE winds around 5 kt. Waves 1 ft or less.
.WED NIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.THU...S winds 5 to 10 kt. Waves 1 ft. A chance of showers through
the day. A chance of tstms. Showers likely through the night.
.FRI...SW winds around 5 kt. Waves flat.

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

$$

ANZ532-242000-
Chesapeake Bay from Sandy Point to North Beach-
226 AM EDT Mon Aug 24 2026

.OVERNIGHT...NW winds 5 kt. Waves less than 1 ft.
.MON...W winds 5 to 10 kt. Waves 1 ft or less.
.MON NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.TUE...W winds 5 to 10 kt. Waves 1 ft.
.TUE NIGHT...W winds 5 kt. Waves less than 1 ft.
.WED...NE winds 5 kt...becoming S 10 to 15 kt with gusts to 20 kt in
the afternoon. Waves flat...building to 2 ft in the afternoon.
.WED NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 3 ft. A
chance of showers.
.THU...S winds 10 to 15 kt. Waves 1 to 2 ft. A chance of showers
through the day. A chance of tstms. Showers likely through the
night.
.FRI...SW winds around 5 kt. Waves 1 ft or less.

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

$$

ANZ540-242000-
Eastern Bay-
226 AM EDT Mon Aug 24 2026

.OVERNIGHT...NW winds 5 kt. Waves less than 1 ft.
.MON...W winds around 5 kt. Waves 1 ft or less.
.MON NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.TUE...W winds around 5 kt. Waves 1 ft.
.TUE NIGHT...W winds around 5 kt. Waves flat.
.WED...E winds around 5 kt...becoming S in the afternoon. Waves 1 ft
or less.
.WED NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. A
chance of showers.
.THU...S winds 10 to 15 kt. Waves 1 ft. A chance of showers through
the day. A chance of tstms. Showers likely through the night.
.FRI...SW winds around 5 kt. Waves 1 ft or less.

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

$$

ANZ533-242000-
Chesapeake Bay from North Beach to Drum Point-
226 AM EDT Mon Aug 24 2026

.OVERNIGHT...NW winds 5 kt. Waves less than 1 ft.
.MON...W winds around 5 kt. Waves 1 ft or less.
.MON NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.TUE...NW winds 5 to 10 kt. Waves 1 ft.
.TUE NIGHT...W winds 5 kt. Waves less than 1 ft.
.WED...E winds 5 kt...becoming S 10 to 15 kt with gusts to 20 kt in
the afternoon. Waves 1 ft or less.
.WED NIGHT...S winds 15 to 20 kt. Waves 3 ft. A chance of showers.
.THU...S winds 10 to 15 kt. Waves 1 to 2 ft. A chance of showers
through the day. A chance of tstms. Showers likely through the
night.
.FRI...SW winds 5 kt. Waves less than 1 ft. A chance of showers
through the night.

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

$$

ANZ541-242000-
Choptank River to Cambridge MD and the Little Choptank River-
226 AM EDT Mon Aug 24 2026

.OVERNIGHT...NW winds 5 kt. Waves less than 1 ft.
.MON...W winds around 5 kt. Waves 1 ft or less.
.MON NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.TUE...NW winds 5 to 10 kt. Waves 1 ft.
.TUE NIGHT...W winds around 5 kt. Waves flat.
.WED...E winds around 5 kt...becoming S in the afternoon. Waves 1 ft
or less.
.WED NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A
chance of showers.
.THU...S winds 10 to 15 kt. Waves 1 ft. A chance of showers through
the day. A chance of tstms. Showers likely through the night.
.FRI...SW winds around 5 kt. Waves 1 ft or less. A chance of showers
through the night.

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

$$

ANZ542-242000-
Patuxent River to Broomes Island MD-
226 AM EDT Mon Aug 24 2026

.OVERNIGHT...NW winds 5 kt. Waves less than 1 ft.
.MON...W winds around 5 kt. Waves 1 ft.
.MON NIGHT...NW winds around 5 kt. Waves 1 ft.
.TUE...NW winds around 5 kt. Waves 1 ft.
.TUE NIGHT...W winds around 5 kt. Waves 1 ft.
.WED...S winds 5 to 10 kt. Waves 1 ft.
.WED NIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.THU...S winds 5 to 10 kt. Waves 1 ft. A chance of showers through
the day. A chance of tstms. Showers likely through the night.
.FRI...SW 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.

$$

ANZ534-242000-
Chesapeake Bay from Drum Point to Smith Point-
226 AM EDT Mon Aug 24 2026

.OVERNIGHT...NW winds 10 kt. Waves 1 ft.
.MON...W winds around 5 kt. Waves 1 ft.
.MON NIGHT...SE winds 5 kt...becoming N 10 to 15 kt in the late
evening and overnight. Waves 1 to 2 ft.
.TUE...NW winds 5 to 10 kt. Waves 1 to 2 ft.
.TUE NIGHT...SW winds around 5 kt. Waves flat.
.WED...W winds around 5 kt...becoming S 10 to 15 kt with gusts to
20 kt in the afternoon. Waves flat... building to 2 ft in the
afternoon.
.WED NIGHT...S winds 15 to 20 kt. Waves 3 ft. A chance of showers.
.THU...S winds 10 to 15 kt. Waves 2 to 3 ft. A chance of showers
through the day. A chance of tstms. Showers likely through the
night.
.FRI...SW 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.

$$

ANZ543-242000-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
226 AM EDT Mon Aug 24 2026

.OVERNIGHT...NW winds 10 kt. Waves 1 ft.
.MON...NW winds around 5 kt. Waves flat.
.MON NIGHT...S winds 5 kt...becoming N in the late evening and
overnight. Waves 1 ft or less.
.TUE...NW winds 5 to 10 kt. Waves 1 ft.
.TUE NIGHT...W winds around 5 kt. Waves flat.
.WED...SW winds 5 to 10 kt. Waves 1 ft or less.
.WED NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A
chance of showers.
.THU...S winds 10 to 15 kt. Waves 1 to 2 ft. A chance of showers
through the day. A chance of tstms. Showers likely through the
night.
.FRI...SW winds 5 to 10 kt. Waves 1 ft. A chance of showers.

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

$$