199
FZUS51 KLWX 030535
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
135 AM EDT Wed Sep 3 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.

ANZ500-032000-
135 AM EDT Wed Sep 3 2025

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

High pressure will slowly move eastward from the eastern seaboard
through tonight. The next front will approach the waters late
Thursday, followed by a stronger cold front on Saturday. Small Craft
 Advisories may be needed at times from Thursday through Sunday.

$$

ANZ535-032000-
Tidal Potomac from Key Bridge to Indian Head-
135 AM EDT Wed Sep 3 2025

.OVERNIGHT...Light winds. Waves flat.
.WED...SE winds around 5 kt. Waves 1 ft or less.
.WED NIGHT...S winds 5 kt. Waves less than 1 ft.
.THU...S winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft. A chance
of showers.
.THU NIGHT...S winds 5 to 10 kt. Gusts up to 20 kt in the evening.
Waves 1 ft. A chance of showers and tstms.
.FRI...SW winds 5 to 10 kt. Gusts up to 20 kt in the afternoon.
Waves 1 ft.
.FRI NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.SAT...W winds 5 to 10 kt...becoming N after midnight. Waves 1 ft. A
chance of showers and tstms through the night. A chance of showers
after midnight.
.SUN...N winds around 5 kt. Waves 1 ft.

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

$$

ANZ536-032000-
Tidal Potomac from Indian Head to Cobb Island-
135 AM EDT Wed Sep 3 2025

.OVERNIGHT...SW winds 5 kt. Waves less than 1 ft. Patchy fog. Vsby
1 to 3 NM.
.WED...S winds around 5 kt. Waves 1 ft or less. Patchy fog. Vsby
1 to 3 NM.
.WED NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.THU...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.THU NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.FRI...SW winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.SAT...SW winds 5 to 10 kt...becoming NW. Waves 1 ft. A chance of
showers and tstms in the afternoon. A chance of showers through the
night.
.SUN...N winds 5 to 10 kt. Waves 1 ft.

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

$$

ANZ537-032000-
Tidal Potomac from Cobb Island to Smith Point-
135 AM EDT Wed Sep 3 2025

.OVERNIGHT...SW winds 5 kt. Waves flat.
.WED...NE winds around 5 kt. Waves flat.
.WED NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.THU...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.THU NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.FRI...SW winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...S winds 10 to 15 kt. Waves 2 ft.
.SAT...SW winds 5 to 10 kt...becoming N after midnight. Waves 1 ft.
A chance of showers.
.SUN...N winds 5 to 10 kt. Waves 1 ft.

$$

ANZ530-032000-
Chesapeake Bay north of Pooles Island-
135 AM EDT Wed Sep 3 2025

.OVERNIGHT...SE winds 5 kt. Waves flat.
.WED...SE winds around 5 kt. Waves flat.
.WED NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.THU...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.THU NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. A
chance of showers and tstms.
.FRI...S winds 10 to 15 kt. Waves 1 ft.
.FRI NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.SAT...W winds 5 to 10 kt...becoming NW after midnight. Waves 1 ft.
A chance of showers.
.SUN...N winds 5 to 10 kt. Waves 1 ft.

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

$$

ANZ531-032000-
Chesapeake Bay from Pooles Island to Sandy Point-
135 AM EDT Wed Sep 3 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH THURSDAY
MORNING...

.OVERNIGHT...S winds 5 kt. Waves flat.
.WED...SE winds around 5 kt. Waves flat.
.WED NIGHT...S winds 5 to 10 kt. Gusts up to 20 kt in the late
evening and overnight. Waves 1 to 2 ft.
.THU...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A chance
of showers.
.THU NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft. A chance of showers and tstms.
.FRI...S winds 10 to 15 kt. Waves 1 to 2 ft.
.FRI NIGHT...S winds 10 to 15 kt. Waves 2 ft.
.SAT...W winds 5 to 10 kt...becoming NW after midnight. Waves 1 ft.
A chance of showers.
.SUN...N winds 5 to 10 kt. Waves 1 ft.

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

$$

ANZ538-032000-
Patapsco River including Baltimore Harbor-
135 AM EDT Wed Sep 3 2025

.OVERNIGHT...S winds 5 kt. Waves flat.
.WED...SE winds around 5 kt. Waves 1 ft or less.
.WED NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.THU...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. A chance
of showers.
.THU NIGHT...S winds 5 to 10 kt. Gusts up to 20 kt in the evening.
Waves 1 ft. A chance of showers and tstms.
.FRI...S winds 5 to 10 kt. Waves 1 ft or less.
.FRI NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.SAT...W winds 5 to 10 kt...becoming N after midnight. Waves 1 ft. A
chance of showers.
.SUN...N winds 5 to 10 kt. Waves 1 ft or less.

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

$$

ANZ539-032000-
Chester River to Queenstown MD-
135 AM EDT Wed Sep 3 2025

.OVERNIGHT...SE winds 5 kt. Waves flat.
.WED...S winds around 5 kt. Waves flat.
.WED NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.THU...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.THU NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft. A chance of showers and tstms.
.FRI...S winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.SAT...SW winds 5 to 10 kt...becoming N after midnight. Waves 1 ft.
A chance of showers.
.SUN...N winds 5 to 10 kt. Waves 1 ft.

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

$$

ANZ532-032000-
Chesapeake Bay from Sandy Point to North Beach-
135 AM EDT Wed Sep 3 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH THURSDAY
MORNING...

.OVERNIGHT...S winds 5 kt. Waves flat.
.WED...E winds around 5 kt. Waves flat.
.WED NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt in the late
evening and overnight. Waves 2 ft.
.THU...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 to 3 ft.
.THU NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 to
3 ft. A chance of showers and tstms.
.FRI...S winds 5 to 10 kt. Waves 1 to 2 ft.
.FRI NIGHT...S winds 10 to 15 kt. Waves 2 ft.
.SAT...SW winds 5 to 10 kt...becoming N after midnight. Waves 1 ft.
A chance of showers.
.SUN...N winds 5 to 10 kt. Waves 1 ft.

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

$$

ANZ540-032000-
Eastern Bay-
135 AM EDT Wed Sep 3 2025

.OVERNIGHT...SE winds 5 kt. Waves flat.
.WED...N winds around 5 kt. Waves flat.
.WED NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.THU...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.THU NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft. A chance of showers and tstms.
.FRI...S winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...S winds 10 to 15 kt. Waves 1 ft.
.SAT...SW winds 5 to 10 kt...becoming N after midnight. Waves 1 ft.
A chance of showers.
.SUN...N winds 5 to 10 kt. Waves 1 ft.

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

$$

ANZ533-032000-
Chesapeake Bay from North Beach to Drum Point-
135 AM EDT Wed Sep 3 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH THURSDAY
MORNING...

.OVERNIGHT...SE winds 5 kt. Waves flat.
.WED...NE winds around 5 kt. Waves flat.
.WED NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt in the late
evening and overnight. Waves 2 ft.
.THU...S winds 15 to 20 kt. Waves 2 to 3 ft.
.THU NIGHT...S winds 15 to 20 kt. Waves 2 to 3 ft.
.FRI...S winds 10 to 15 kt. Waves 1 to 2 ft.
.FRI NIGHT...S winds 10 to 15 kt. Waves 2 ft.
.SAT...SW winds 5 to 10 kt...becoming N 10 to 15 kt after midnight.
Waves 1 to 2 ft. A chance of showers.
.SUN...N winds 10 to 15 kt. Waves 1 to 2 ft.

$$

ANZ541-032000-
Choptank River to Cambridge MD and the Little Choptank River-
135 AM EDT Wed Sep 3 2025

.OVERNIGHT...SE winds 5 kt. Waves flat.
.WED...N winds around 5 kt. Waves flat.
.WED NIGHT...S winds 10 to 15 kt. Waves 1 ft.
.THU...S winds 15 to 20 kt. Waves 2 ft.
.THU NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft.
.FRI...S winds 10 to 15 kt. Waves 1 ft.
.FRI NIGHT...S winds 10 to 15 kt. Waves 1 ft.
.SAT...SW winds 5 to 10 kt...becoming N 10 to 15 kt after midnight.
Waves 1 ft. A chance of showers.
.SUN...N winds 10 to 15 kt. Waves 1 ft.

$$

ANZ542-032000-
Patuxent River to Broomes Island MD-
135 AM EDT Wed Sep 3 2025

.OVERNIGHT...SW winds 5 kt. Waves less than 1 ft.
.WED...NE winds around 5 kt. Waves 1 ft.
.WED NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.THU...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.THU NIGHT...S winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
.FRI...S winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.SAT...SW winds 5 to 10 kt...becoming N after midnight. Waves 1 ft.
A chance of showers.
.SUN...N winds 5 to 10 kt. Waves 1 ft.

$$

ANZ534-032000-
Chesapeake Bay from Drum Point to Smith Point-
135 AM EDT Wed Sep 3 2025

.OVERNIGHT...E winds 5 kt. Waves flat.
.WED...N winds 5 kt. Waves flat.
.WED NIGHT...S winds 10 to 15 kt. Waves 2 ft.
.THU...S winds 15 to 20 kt with gusts to 25 kt. Waves 2 to 3 ft.
.THU NIGHT...S winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.
.FRI...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.FRI NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 3 ft.
.SAT...SW winds 10 to 15 kt...becoming N after midnight. Waves 2 ft.
A chance of showers.
.SUN...N winds 10 to 15 kt. Waves 1 to 2 ft.

$$

ANZ543-032000-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
135 AM EDT Wed Sep 3 2025

.OVERNIGHT...NE winds 5 kt. Waves flat.
.WED...N winds 5 kt. Waves flat.
.WED NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.THU...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.THU NIGHT...S winds 15 to 20 kt. Waves 2 ft.
.FRI...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.FRI NIGHT...S winds 15 to 20 kt. Waves 2 ft.
.SAT...SW winds 10 to 15 kt...becoming N after midnight. Waves 1 ft.
A chance of showers.
.SUN...N winds 10 to 15 kt. Waves 1 ft.

$$