065
FZUS51 KLWX 220627
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
226 AM EDT Sat Aug 22 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.

ANZ500-222000-
226 AM EDT Sat Aug 22 2026

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

A weak area of low pressure will traverse the waters throughout the
day today, bringing heavy showers and some thunderstorms. A cold
front will move across the waters into Sunday, resulting in drier
conditiosn returning. Weak high pressure builds over the waters for
early next week bringing fair weather.

$$

ANZ535-222000-
Tidal Potomac from Key Bridge to Indian Head-
226 AM EDT Sat Aug 22 2026

.OVERNIGHT...Light winds. Waves flat. Numerous showers with isolated
tstms.
.SAT...E winds around 5 kt. Waves 1 ft. Showers and scattered tstms.
.SAT NIGHT...S winds around 5 kt. Waves 1 ft or less. A chance of
showers and tstms.
.SUN...W winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...NW winds around 5 kt. Waves 1 ft.
.MON...W winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...NW winds around 5 kt. Waves 1 ft.
.TUE...W winds around 5 kt. Waves 1 ft.
.WED...S winds around 5 kt. Waves 1 ft. A chance of showers after
midnight.

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

$$

ANZ536-222000-
Tidal Potomac from Indian Head to Cobb Island-
226 AM EDT Sat Aug 22 2026

.OVERNIGHT...SE winds 5 kt. Waves flat. Showers with isolated tstms.
.SAT...E winds around 5 kt. Waves 1 ft. Showers and scattered tstms.
.SAT NIGHT...S winds around 5 kt. Waves 1 ft. A chance of showers.
.SUN...W winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...NW winds 5 kt. Waves less than 1 ft.
.MON...W winds 5 kt. Waves less than 1 ft.
.MON NIGHT...NW winds 5 kt. Waves less than 1 ft.
.TUE...W winds around 5 kt. Waves 1 ft.
.WED...S winds around 5 kt. Waves 1 ft.

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

$$

ANZ537-222000-
Tidal Potomac from Cobb Island to Smith Point-
226 AM EDT Sat Aug 22 2026

.OVERNIGHT...SE winds 5 kt. Waves less than 1 ft. Showers with
isolated tstms.
.SAT...E winds 5 to 10 kt. Waves 1 ft. Showers and scattered tstms.
.SAT NIGHT...SW winds 5 kt. Waves less than 1 ft. A chance of
showers and tstms.
.SUN...W winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.MON...NW winds 5 kt. Waves less than 1 ft.
.MON NIGHT...NW winds 5 to 10 kt. Waves 1 ft or less.
.TUE...W winds around 5 kt. Waves 1 ft or less.
.WED...S winds 5 to 10 kt. Waves 1 ft. A chance of showers through
the night.

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

$$

ANZ530-222000-
Chesapeake Bay north of Pooles Island-
226 AM EDT Sat Aug 22 2026

.OVERNIGHT...SE winds 5 kt. Waves less than 1 ft. Isolated showers.
.SAT...E winds 5 to 10 kt. Waves 1 ft. Numerous showers and
scattered tstms.
.SAT NIGHT...SE winds 5 to 10 kt...becoming SW late. Waves 1 ft.
Showers likely with a chance of tstms.
.SUN...W winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.SUN NIGHT...W winds 5 to 10 kt. Waves 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 around 5 kt. Waves 1 ft or less.
.WED...W winds around 5 kt...becoming S. Waves 1 ft. A chance of
showers after midnight.

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

$$

ANZ531-222000-
Chesapeake Bay from Pooles Island to Sandy Point-
226 AM EDT Sat Aug 22 2026

.OVERNIGHT...SE winds 5 kt. Waves flat. Scattered showers.
.SAT...E winds 5 to 10 kt. Waves 1 ft. Numerous showers and
scattered tstms.
.SAT NIGHT...SE winds 5 to 10 kt...becoming SW late. Waves 1 ft.
Showers likely.
.SUN...W winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.SUN NIGHT...W winds 5 to 10 kt. Waves 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 or less.
.WED...N winds around 5 kt...becoming S. Waves 1 ft or less. A
chance of showers after midnight.

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

$$

ANZ538-222000-
Patapsco River including Baltimore Harbor-
226 AM EDT Sat Aug 22 2026

.OVERNIGHT...SE winds 5 kt. Waves flat. Scattered showers.
.SAT...E winds 5 to 10 kt. Waves 1 ft. Numerous showers and
scattered tstms.
.SAT NIGHT...E winds 5 to 10 kt...becoming SW after midnight. Waves
1 ft or less. Showers likely.
.SUN...W winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...W winds 5 to 10 kt. Waves 1 ft or less.
.MON...W winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...NW winds 5 to 10 kt. Waves 1 ft or less.
.TUE...W winds around 5 kt. Waves flat.
.WED...N winds around 5 kt...becoming S. Waves 1 ft or less.

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

$$

ANZ539-222000-
Chester River to Queenstown MD-
226 AM EDT Sat Aug 22 2026

.OVERNIGHT...SE winds 5 kt. Waves flat. Scattered showers.
.SAT...E winds 5 kt. Waves less than 1 ft. Showers and scattered
tstms.
.SAT NIGHT...SE winds around 5 kt. Waves 1 ft or less. A chance of
showers.
.SUN...W winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.SUN NIGHT...W winds 5 to 10 kt. Waves 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 around 5 kt. Waves 1 ft or less.
.WED...W winds around 5 kt...becoming S. Waves 1 ft or less. A
chance of showers after midnight.

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

$$

ANZ532-222000-
Chesapeake Bay from Sandy Point to North Beach-
226 AM EDT Sat Aug 22 2026

.OVERNIGHT...SE winds 5 kt. Waves less than 1 ft. Scattered showers.
.SAT...E winds 5 to 10 kt. Waves 1 ft. Numerous showers and
scattered tstms.
.SAT NIGHT...SE winds 5 to 10 kt...becoming SW after midnight. Waves
1 ft. A chance of showers.
.SUN...W winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...W winds 5 to 10 kt. Waves 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.
.WED...NW winds around 5 kt...becoming S. Waves 1 to 2 ft. A chance
of showers after midnight.

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

$$

ANZ540-222000-
Eastern Bay-
226 AM EDT Sat Aug 22 2026

.OVERNIGHT...SE winds 5 kt. Waves flat. Numerous showers.
.SAT...E winds 5 to 10 kt. Waves 1 ft. Showers and scattered tstms.
.SAT NIGHT...SE winds 5 to 10 kt...becoming SW late. Waves 1 ft or
less. A chance of showers.
.SUN...W winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...W winds 5 to 10 kt. Waves 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 around 5 kt. Waves 1 ft or less.
.WED...E winds around 5 kt...becoming S. Waves 1 ft or less. A
chance of showers after midnight.

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

$$

ANZ533-222000-
Chesapeake Bay from North Beach to Drum Point-
226 AM EDT Sat Aug 22 2026

.OVERNIGHT...SE winds 5 kt. Waves less than 1 ft. Showers with
isolated tstms.
.SAT...E winds 5 to 10 kt. Waves 1 ft. Showers and scattered tstms.
.SAT NIGHT...SE winds 5 to 10 kt...becoming SW after midnight. Waves
1 ft. A chance of showers.
.SUN...W winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.MON...NW 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.
.WED...S winds 5 to 10 kt. Waves 1 to 2 ft. A chance of showers
after midnight.

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

$$

ANZ541-222000-
Choptank River to Cambridge MD and the Little Choptank River-
226 AM EDT Sat Aug 22 2026

.OVERNIGHT...SE winds 5 kt. Waves less than 1 ft. Numerous showers
with isolated tstms.
.SAT...E winds 5 to 10 kt. Waves 1 ft. Showers and scattered tstms.
.SAT NIGHT...SE winds 5 to 10 kt...becoming SW after midnight. Waves
1 ft or less. A chance of showers.
.SUN...W winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.MON...NW 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 or less.
.WED...SE winds 5 to 10 kt. Waves 1 ft. A chance of showers after
midnight.

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

$$

ANZ542-222000-
Patuxent River to Broomes Island MD-
226 AM EDT Sat Aug 22 2026

.OVERNIGHT...SE winds 5 kt. Waves less than 1 ft. Showers with
isolated tstms.
.SAT...E winds 5 to 10 kt. Waves 1 ft. Showers and scattered tstms.
.SAT NIGHT...S winds around 5 kt. Waves 1 ft. A chance of showers.
.SUN...W winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...NW winds 5 kt. Waves less than 1 ft.
.MON...NW winds 5 kt. Waves less than 1 ft.
.MON NIGHT...NW winds around 5 kt. Waves 1 ft.
.TUE...W winds around 5 kt. Waves 1 ft.
.WED...S winds 5 to 10 kt. Waves 1 ft. A chance of showers through
the night.

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

$$

ANZ534-222000-
Chesapeake Bay from Drum Point to Smith Point-
226 AM EDT Sat Aug 22 2026

.OVERNIGHT...SE winds 10 kt. Waves 1 ft. Showers with isolated
tstms.
.SAT...E winds 5 to 10 kt. Waves 2 ft. Showers and scattered tstms.
.SAT NIGHT...S winds 5 to 10 kt...becoming SW after midnight. Waves
1 ft. A chance of showers and tstms.
.SUN...W winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...W winds 5 to 10 kt. Waves 1 ft.
.MON...NW winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.TUE...NW winds 5 to 10 kt...becoming SW. Waves 1 ft.
.WED...S winds 10 to 15 kt. Waves 1 to 2 ft. A chance of showers
through the night.

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

$$

ANZ543-222000-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
226 AM EDT Sat Aug 22 2026

.OVERNIGHT...E winds 5 to 10 kt. Waves 1 ft. Numerous showers with
isolated tstms.
.SAT...E winds 5 to 10 kt. Waves 1 ft. Showers and scattered tstms.
.SAT NIGHT...SE winds 5 to 10 kt...becoming SW after midnight. Waves
1 ft. A chance of showers and tstms.
.SUN...W winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...W winds 5 to 10 kt. Waves 1 ft.
.MON...NW winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...NW winds 5 to 10 kt. Waves 1 ft or less.
.TUE...NW winds 5 to 10 kt...becoming SW. Waves 1 ft or less.
.WED...S winds 10 to 15 kt. Waves 1 ft. A chance of showers after
midnight.

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

$$