864
FZUS51 KLWX 041134
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
734 AM EDT Fri Apr 4 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.

ANZ500-042000-
734 AM EDT Fri Apr 4 2025

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

A front will oscillate across the Mid Atlantic through  Saturday.
Another area of low pressure and the accompanying cold  front will
move through on Sunday. A secondary reinforcing cold  front tracks
through the waters Monday night.  Small Craft Advisories may be
needed Saturday night through early  Monday and again on Tuesday.
Boaters should be aware of the threats of boating in cold water,
even when air temperatures are warm. Visit
weather.gov/safety/coldwater for more information.

$$

ANZ535-042000-
Tidal Potomac from Key Bridge to Indian Head-
734 AM EDT Fri Apr 4 2025

.TODAY...NW winds 5 kt...becoming N this afternoon. Waves 1 ft.
Scattered showers with isolated tstms. Vsby 1 NM or less this
morning.
.TONIGHT...E winds 5 kt. Waves less than 1 ft. Showers likely.
.SAT...SE winds 5 to 10 kt. Waves 1 ft. Showers likely. Vsby 1 to
3 NM.
.SAT NIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.SUN...SW winds 10 to 15 kt...becoming NW in the afternoon. Gusts up
to 20 kt. Waves 1 ft. Showers likely.
.SUN NIGHT...N winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
Showers.
.MON...NW winds 5 to 10 kt. Waves 1 ft. Showers likely, mainly in
the morning.
.TUE...NW winds 10 to 15 kt...diminishing to 5 kt after midnight.
Waves 1 ft.

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

$$

ANZ536-042000-
Tidal Potomac from Indian Head to Cobb Island-
734 AM EDT Fri Apr 4 2025

.TODAY...W winds 5 kt...becoming NE late. Waves 1 ft. Scattered
showers. Scattered tstms this afternoon.
.TONIGHT...E winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.
.SAT...SE winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.SUN...SW winds 10 to 15 kt...becoming W in the afternoon. Gusts up
to 25 kt. Waves 2 ft. Showers likely.
.SUN NIGHT...N winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
Showers.
.MON...N winds 5 to 10 kt. Waves 1 ft. A chance of showers through
the day.
.TUE...NW winds 10 to 15 kt. Waves 1 to 2 ft.

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

$$

ANZ537-042000-
Tidal Potomac from Cobb Island to Smith Point-
734 AM EDT Fri Apr 4 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 AM EDT THIS MORNING...

.TODAY...W winds 10 kt...becoming NE late. Waves 1 to 2 ft. Isolated
showers this morning, then scattered showers and tstms this
afternoon.
.TONIGHT...E winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.
.SAT...SE winds 5 to 10 kt. Waves 1 ft. A chance of showers. Patchy
fog. Vsby 1 to 3 NM.
.SAT NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft.
.SUN...SW winds 15 to 20 kt...becoming W in the afternoon. Gusts up
to 25 kt. Waves 2 ft. A chance of showers.
.SUN NIGHT...N winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
Showers.
.MON...N winds 10 to 15 kt...diminishing to 5 kt in the evening,
then becoming NW 10 to 15 kt after midnight. Waves 1 to 2 ft.
Showers, mainly in the morning.
.TUE...NW winds 10 to 15 kt. Waves 2 ft.

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

$$

ANZ530-042000-
Chesapeake Bay north of Pooles Island-
734 AM EDT Fri Apr 4 2025

.TODAY...N winds 5 to 10 kt. Waves 1 ft. Scattered showers with
isolated tstms this morning, then isolated showers this afternoon.
Vsby 1 NM or less this morning.
.TONIGHT...E winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.SAT...SE winds 5 to 10 kt. Waves 1 ft. A chance of showers. Vsby
1 to 3 NM.
.SAT NIGHT...SE winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.SUN...SW winds 10 to 15 kt...becoming NW in the afternoon. Gusts up
to 20 kt. Waves 1 ft. Showers likely.
.SUN NIGHT...N winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
Showers.
.MON...NW winds 5 to 10 kt. Waves 1 ft. Showers, mainly in the
morning.
.TUE...NW winds 10 to 15 kt. Waves 1 to 2 ft.

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

$$

ANZ531-042000-
Chesapeake Bay from Pooles Island to Sandy Point-
734 AM EDT Fri Apr 4 2025

.TODAY...N winds 10 kt. Waves 1 ft. Showers with isolated tstms this
morning, then isolated showers this afternoon. Vsby 1 NM or less
this morning.
.TONIGHT...E winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.SAT...SE winds 5 to 10 kt. Waves 1 ft. A chance of showers. Vsby
1 to 3 NM.
.SAT NIGHT...SE winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.SUN...SW winds 10 to 15 kt...becoming NW in the afternoon. Gusts up
to 20 kt. Waves 2 ft. Showers likely.
.SUN NIGHT...N winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
Showers.
.MON...NW winds 10 to 15 kt. Waves 1 to 2 ft. Showers, mainly in the
morning.
.TUE...NW winds 15 to 20 kt. Waves 2 ft.

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

$$

ANZ538-042000-
Patapsco River including Baltimore Harbor-
734 AM EDT Fri Apr 4 2025

.TODAY...N winds 5 to 10 kt. Waves flat. Showers with isolated tstms
this morning, then isolated showers this afternoon. Vsby 1 NM or
less this morning.
.TONIGHT...E winds 5 kt. Waves less than 1 ft. A chance of showers.
.SAT...SE winds 5 to 10 kt. Waves 1 ft. A chance of showers. Vsby
1 to 3 NM.
.SAT NIGHT...SE winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.SUN...SW winds 5 to 10 kt...becoming NW in the afternoon. Gusts up
to 20 kt. Waves 1 ft. Showers likely.
.SUN NIGHT...N winds 5 to 10 kt. Waves 1 ft. Showers.
.MON...NW winds 5 to 10 kt. Waves 1 ft or less. Showers likely,
mainly in the morning.
.TUE...NW winds 10 to 15 kt. Waves 1 ft.

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

$$

ANZ539-042000-
Chester River to Queenstown MD-
734 AM EDT Fri Apr 4 2025

.TODAY...N winds 10 kt. Waves 1 ft. Showers with isolated tstms this
morning, then isolated showers and tstms this afternoon. Vsby 1 NM
or less this morning.
.TONIGHT...E winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.SAT...SE winds 5 to 10 kt. Waves 1 ft. A chance of showers. Vsby
1 to 3 NM.
.SAT NIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.SUN...SW winds 10 to 15 kt...becoming NW in the afternoon. Gusts up
to 20 kt. Waves 2 ft. Showers likely.
.SUN NIGHT...N winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
Showers.
.MON...NW winds 10 to 15 kt. Waves 1 to 2 ft. Showers, mainly in the
morning.
.TUE...NW winds 10 to 15 kt. Waves 2 to 3 ft.

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

$$

ANZ532-042000-
Chesapeake Bay from Sandy Point to North Beach-
734 AM EDT Fri Apr 4 2025

.TODAY...W winds 10 kt...becoming N late this morning and afternoon.
Waves 1 ft. Showers with isolated tstms, mainly this morning with
vsby 1 NM or less.
.TONIGHT...E winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.SAT...SE winds 5 to 10 kt. Waves 1 ft. A chance of showers. Patchy
fog. Vsby 1 to 3 NM.
.SAT NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt after midnight.
Waves 1 to 2 ft. A chance of showers.
.SUN...SW winds 10 to 15 kt...becoming NW in the afternoon. Gusts up
to 20 kt. Waves 2 ft. Showers likely.
.SUN NIGHT...N winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
Showers.
.MON...N winds 10 to 15 kt...becoming NW after midnight. Waves 1 to
2 ft. A chance of showers through the day.
.TUE...NW winds 15 to 20 kt. Waves 2 ft.

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

$$

ANZ540-042000-
Eastern Bay-
734 AM EDT Fri Apr 4 2025

.TODAY...W winds 10 kt...becoming N late this morning and afternoon.
Waves 1 ft. Showers with isolated tstms, mainly this morning with
vsby 1 NM or less.
.TONIGHT...E winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.SAT...SE winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.SAT NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt after midnight.
Waves 1 ft. A chance of showers.
.SUN...SW winds 10 to 15 kt...becoming NW in the afternoon. Gusts up
to 20 kt. Waves 2 ft. Showers likely.
.SUN NIGHT...N winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
Showers.
.MON...N winds 10 to 15 kt...becoming NW 5 kt in the evening, then
increasing to 10 to 15 kt after midnight. Waves 1 ft. Showers,
mainly in the morning.
.TUE...NW winds 10 to 15 kt. Waves 1 to 2 ft.

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

$$

ANZ533-042000-
Chesapeake Bay from North Beach to Drum Point-
734 AM EDT Fri Apr 4 2025

.TODAY...W winds 10 kt...becoming N late this morning and early
afternoon, then becoming N 10 kt late. Waves 1 to 2 ft. Scattered
showers with isolated tstms.
.TONIGHT...E winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.
.SAT...SE winds 5 to 10 kt. Waves 1 ft. A chance of showers. Patchy
fog. Vsby 1 to 3 NM.
.SAT NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft.
.SUN...SW winds 15 to 20 kt...becoming NW in the afternoon. Gusts up
to 25 kt. Waves 2 ft. Showers likely.
.SUN NIGHT...N winds 10 to 15 kt with gusts to 25 kt. Waves 2 to
3 ft. Showers.
.MON...N winds 10 to 15 kt...becoming NW after midnight. Waves 1 to
2 ft. Showers, mainly in the morning.
.TUE...NW winds 15 to 20 kt. Waves 2 to 3 ft.

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

$$

ANZ541-042000-
Choptank River to Cambridge MD and the Little Choptank River-
734 AM EDT Fri Apr 4 2025

.TODAY...SW winds 10 kt...becoming N late this morning and early
afternoon, then becoming N 10 kt late. Waves 1 ft. Isolated tstms.
Numerous showers, mainly this morning.
.TONIGHT...E winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.SAT...SE winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.SAT NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft.
.SUN...SW winds 15 to 20 kt...becoming NW in the afternoon. Gusts up
to 25 kt. Waves 2 ft. Showers likely.
.SUN NIGHT...N winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft.
Showers.
.MON...N winds 10 to 15 kt...becoming NW after midnight. Waves 1 to
2 ft. Showers, mainly in the morning.
.TUE...NW winds 15 to 20 kt. Waves 2 ft.

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

$$

ANZ542-042000-
Patuxent River to Broomes Island MD-
734 AM EDT Fri Apr 4 2025

.TODAY...W winds 10 kt...becoming N this afternoon. Waves 1 ft.
Scattered showers. Isolated tstms this morning, then scattered tstms
this afternoon.
.TONIGHT...E winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.
.SAT...SE winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.SAT NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.SUN...SW winds 10 to 15 kt...becoming W in the afternoon. Gusts up
to 20 kt. Waves 1 ft. Showers likely.
.SUN NIGHT...N winds 10 kt with gusts to 20 kt. Waves 1 ft. Showers.
.MON...N winds 5 to 10 kt. Waves 1 ft. Showers, mainly in the
morning.
.TUE...NW winds 10 to 15 kt. Waves 1 ft.

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

$$

ANZ534-042000-
Chesapeake Bay from Drum Point to Smith Point-
734 AM EDT Fri Apr 4 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 AM EDT THIS MORNING...

.TODAY...SW winds 10 to 15 kt...becoming N this afternoon. Gusts up
to 20 kt. Waves 1 to 2 ft. Isolated showers this morning, then
scattered showers with isolated tstms this afternoon.
.TONIGHT...E winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms. Vsby 1 NM or less.
.SAT...SE winds 10 kt. Waves 1 to 2 ft. A chance of showers. Patchy
fog. Vsby 1 to 3 NM.
.SAT NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 to
3 ft.
.SUN...SW winds 15 to 20 kt...becoming W in the afternoon. Gusts up
to 25 kt. Waves 3 ft. A chance of showers.
.SUN NIGHT...N winds 10 to 15 kt with gusts to 25 kt. Waves 3 ft.
Showers.
.MON...N winds 10 to 15 kt...becoming NW after midnight. Waves 2 to
3 ft...subsiding to 1 to 2 ft. Showers through the day, then a
chance of showers through the night.
.TUE...NW winds 15 to 20 kt. Waves 3 ft.

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

$$

ANZ543-042000-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
734 AM EDT Fri Apr 4 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 AM EDT THIS MORNING...

.TODAY...SW winds 10 to 15 kt with gusts to 20 kt... becoming NW
5 kt early this afternoon, then becoming N late. Waves 1 to 2 ft.
Isolated showers.
.TONIGHT...E winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms. Vsby 1 NM or less.
.SAT...SE winds 5 to 10 kt. Waves 1 ft. A chance of showers. Patchy
fog. Vsby 1 to 3 NM.
.SAT NIGHT...S winds 15 to 20 kt. Waves 2 ft.
.SUN...SW winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft. A
chance of showers.
.SUN NIGHT...N winds 10 to 15 kt...becoming NE after midnight. Gusts
up to 25 kt. Waves 2 ft. Showers.
.MON...N winds 10 to 15 kt...becoming NW after midnight. Waves 1 to
2 ft. Showers through the day, then a chance of showers through the
night.
.TUE...NW winds 15 to 20 kt. Waves 2 ft.

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

$$