511
FZUS51 KLWX 031134
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
734 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-
734 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-
734 AM EDT Wed Sep 3 2025

.TODAY...SE winds around 5 kt. Waves 1 ft or less.
.TONIGHT...S winds 5 kt. Waves less than 1 ft.
.THU...S winds 5 to 10 kt. Gusts up to 20 kt in the late morning and
afternoon. 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-
734 AM EDT Wed Sep 3 2025

.TODAY...S winds around 5 kt. Waves 1 ft or less. Patchy fog this
morning with vsby 1 to 3 NM.
.TONIGHT...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-
734 AM EDT Wed Sep 3 2025

.TODAY...NE winds 5 kt. Waves flat.
.TONIGHT...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-
734 AM EDT Wed Sep 3 2025

.TODAY...SE winds around 5 kt. Waves 1 ft or less.
.TONIGHT...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-
734 AM EDT Wed Sep 3 2025

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

.TODAY...SE winds 5 kt. Waves flat.
.TONIGHT...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-
734 AM EDT Wed Sep 3 2025

.TODAY...E winds around 5 kt. Waves 1 ft or less.
.TONIGHT...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-
734 AM EDT Wed Sep 3 2025

.TODAY...SE winds around 5 kt. Waves flat.
.TONIGHT...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-
734 AM EDT Wed Sep 3 2025

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

.TODAY...E winds around 5 kt. Waves flat.
.TONIGHT...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-
734 AM EDT Wed Sep 3 2025

.TODAY...N winds around 5 kt. Waves flat.
.TONIGHT...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-
734 AM EDT Wed Sep 3 2025

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

.TODAY...NE winds 5 kt. Waves flat.
.TONIGHT...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-
734 AM EDT Wed Sep 3 2025

.TODAY...N winds around 5 kt. Waves flat.
.TONIGHT...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-
734 AM EDT Wed Sep 3 2025

.TODAY...NE winds 5 kt. Waves less than 1 ft.
.TONIGHT...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-
734 AM EDT Wed Sep 3 2025

.TODAY...N winds 5 kt. Waves flat.
.TONIGHT...S winds 10 to 15 kt. Waves 2 ft.
.THU...S winds 15 to 20 kt. Gusts up to 20 kt... increasing to 25 kt
late. 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-
734 AM EDT Wed Sep 3 2025

.TODAY...N winds 5 kt. Waves flat.
.TONIGHT...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.

$$