612
FZUS51 KLWX 031737
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
136 PM EDT Thu Apr 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.

ANZ500-040800-
136 PM EDT Thu Apr 3 2025

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

A warm front ahead of a deep low across the Upper Midwest will lift
through the area through this morning. The accompanying cold front
will slowly move through the area this evening into the night.
Eventually this frontal zone is expected to meander nearby through
Saturday before another area of low pressure lifts by Sunday. High
pressure returns early next week.  Small Craft Advisories may be
needed Sunday into Sunday night.  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.

$$

ANZ535-040800-
Tidal Potomac from Key Bridge to Indian Head-
136 PM EDT Thu Apr 3 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING...

.THIS AFTERNOON...SW winds 15 kt with gusts to 25 kt. Waves 1 ft. A
chance of showers.
.TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt in the evening.
Waves 1 ft. A chance of showers.
.FRI...N winds 5 to 10 kt...becoming NE late. Waves 1 ft. A chance
of showers.
.FRI NIGHT...E winds around 5 kt. Waves 1 ft. A chance of showers.
.SAT...SE winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...S winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
.SUN...SW winds 10 to 15 kt...becoming NW 5 to 10 kt. Waves 1 ft.
Showers likely through the day, then showers with a chance of tstms
through the night.
.MON...N winds 5 to 10 kt. Waves 1 ft. Showers in the morning, then
a chance of showers through the night.

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

$$

ANZ536-040800-
Tidal Potomac from Indian Head to Cobb Island-
136 PM EDT Thu Apr 3 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING...

.THIS AFTERNOON...SW winds 15 kt with gusts to 25 kt. Waves 2 ft. A
slight chance of showers.
.TONIGHT...SW winds 10 kt with gusts to 20 kt. Waves 1 ft. A chance
of showers.
.FRI...W winds 5 to 10 kt...becoming NE in the afternoon. Waves
1 ft. A chance of showers.
.FRI NIGHT...E winds 5 kt. Waves less than 1 ft. A chance of showers
and tstms.
.SAT...SE winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...S winds 15 to 20 kt. Waves 1 to 2 ft.
.SUN...SW winds 15 to 20 kt...becoming NW 10 to 15 kt after
midnight. Waves 1 to 2 ft. Showers likely through the day, then
showers with a chance of tstms through the night.
.MON...N winds 10 to 15 kt...diminishing to 5 to 10 kt. Waves 1 ft.
Showers, mainly in the morning.

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

$$

ANZ537-040800-
Tidal Potomac from Cobb Island to Smith Point-
136 PM EDT Thu Apr 3 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING...

.THIS AFTERNOON...SW winds 15 kt with gusts to 20 kt. Waves 2 ft.
.TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.FRI...W winds 5 to 10 kt...becoming N in the afternoon. Waves 1 ft.
A chance of showers.
.FRI NIGHT...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 15 to 20 kt. Waves 1 to 2 ft.
.SUN...SW winds 15 to 20 kt...becoming W 10 to 15 kt after midnight.
Waves 2 ft. A chance of showers through the day, then showers with a
chance of tstms through the night.
.MON...N winds 10 to 15 kt...diminishing to 5 to 10 kt. Waves 1 to
2 ft. Showers through the day. A chance of showers through the
night.

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

$$

ANZ530-040800-
Chesapeake Bay north of Pooles Island-
136 PM EDT Thu Apr 3 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING...

.THIS AFTERNOON...SW winds 15 kt with gusts to 25 kt. Waves 2 ft. A
chance of showers with a slight chance of tstms.
.TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt... becoming W
5 to 10 kt late. Waves 1 to 2 ft. Showers with a chance of tstms.
Vsby 1 NM or less.
.FRI...N winds 5 to 10 kt. Waves 1 ft. Showers. Vsby 1 NM or less.
.FRI NIGHT...NE winds around 5 kt. Waves 1 ft. Showers.
.SAT...E winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.SAT NIGHT...SE winds 10 to 15 kt. Waves 1 ft. A chance of showers.
.SUN...SW winds 10 to 15 kt...becoming N. Waves 1 to 2 ft. Showers
likely through the day, then showers through the night.
.MON...NW winds 5 to 10 kt. Waves 1 ft. Showers in the morning.

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

$$

ANZ531-040800-
Chesapeake Bay from Pooles Island to Sandy Point-
136 PM EDT Thu Apr 3 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING...

.THIS AFTERNOON...S winds 15 kt with gusts to 20 kt. Waves 2 ft. A
chance of showers with a slight chance of tstms.
.TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt... becoming W
5 to 10 kt late. Waves 1 to 2 ft. Showers likely with a chance of
tstms. Vsby 1 NM or less.
.FRI...N winds 5 to 10 kt. Waves 1 ft. Showers likely. Vsby 1 NM or
less.
.FRI NIGHT...NE winds 5 to 10 kt. Waves 1 ft. Showers.
.SAT...SE winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.SAT NIGHT...SE winds 10 to 15 kt. Gusts up to 20 kt. Waves 1 to
2 ft.
.SUN...SW winds 10 to 15 kt...becoming N. Waves 2 ft. Showers likely
through the day, then showers through the night.
.MON...N winds 10 to 15 kt...becoming NW 5 to 10 kt. Waves 1 to
2 ft. Showers in the morning, then a chance of showers through the
night.

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

$$

ANZ538-040800-
Patapsco River including Baltimore Harbor-
136 PM EDT Thu Apr 3 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING...

.THIS AFTERNOON...SW winds 15 kt with gusts to 25 kt. Waves 2 ft. A
chance of showers with a slight chance of tstms.
.TONIGHT...SW winds 5 to 10 kt. Waves 1 ft. Showers likely with a
chance of tstms. Vsby 1 NM or less.
.FRI...N winds 5 kt. Waves less than 1 ft. Showers likely. Vsby 1 NM
or less.
.FRI NIGHT...NE winds around 5 kt. Waves flat. Showers.
.SAT...SE winds 5 kt. Waves less than 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 N. Waves 1 ft. Showers likely
through the day, then showers through the night.
.MON...NW winds 5 to 10 kt. Waves 1 ft. Showers in the morning, then
a chance of showers through the night.

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

$$

ANZ539-040800-
Chester River to Queenstown MD-
136 PM EDT Thu Apr 3 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING...

.THIS AFTERNOON...S winds 15 kt with gusts to 25 kt. Waves 2 ft. A
chance of showers with a slight chance of tstms.
.TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt until early
morning. Waves 1 to 2 ft. A chance of showers.
.FRI...N winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.FRI NIGHT...NE winds 5 kt. Waves less than 1 ft. 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. Waves 1 to
2 ft.
.SUN...SW winds 15 kt...becoming N. Waves 2 ft. A chance of showers
through the day, then showers through the night.
.MON...N winds 10 to 15 kt...becoming NW 5 to 10 kt. Waves 1 ft.
Showers, mainly in the morning.

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

$$

ANZ532-040800-
Chesapeake Bay from Sandy Point to North Beach-
136 PM EDT Thu Apr 3 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING...

.THIS AFTERNOON...SW winds 15 kt with gusts to 20 kt. Waves 2 to
3 ft. A chance of showers.
.TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A
chance of showers.
.FRI...N winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.FRI NIGHT...NE winds 5 to 10 kt. Waves 1 ft. Showers likely.
.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 10 to 15 kt. Waves 2 to
3 ft. A chance of showers through the day, then showers through the
night.
.MON...N winds 10 to 15 kt...becoming NW after midnight. Waves 1 to
2 ft. Showers, mainly in the morning.

$$

ANZ540-040800-
Eastern Bay-
136 PM EDT Thu Apr 3 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING...

.THIS AFTERNOON...S winds 15 kt with gusts to 25 kt. Waves 2 ft. A
chance of showers.
.TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft. A chance of showers.
.FRI...N winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.FRI NIGHT...NE winds 5 to 10 kt. Waves 1 ft. 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 kt...becoming N after midnight. Waves 1 to 2 ft.
A chance of showers through the day, then showers through the night.
.MON...N winds 10 to 15 kt...becoming NW 5 to 10 kt after midnight.
Waves 1 ft. Showers, mainly in the morning.

$$

ANZ533-040800-
Chesapeake Bay from North Beach to Drum Point-
136 PM EDT Thu Apr 3 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING...

.THIS AFTERNOON...SW winds 15 kt with gusts to 25 kt. Waves 2 ft. A
chance of showers.
.TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A
chance of showers.
.FRI...NW winds 5 to 10 kt...becoming N in the afternoon. Waves
1 ft. A chance of showers.
.FRI NIGHT...NE 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 15 to 20 kt. Waves 1 to 2 ft.
.SUN...SW winds 15 to 20 kt...becoming NW 10 to 15 kt after
midnight. Waves 2 to 3 ft. A chance of showers through the day, then
showers through the night.
.MON...N winds 10 to 15 kt...becoming NW after midnight. Waves 1 to
2 ft. Showers, mainly in the morning.

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

$$

ANZ541-040800-
Choptank River to Cambridge MD and the Little Choptank River-
136 PM EDT Thu Apr 3 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING...

.THIS AFTERNOON...SW winds 15 kt with gusts to 20 kt. Waves 2 ft. A
chance of showers.
.TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft. A chance of showers.
.FRI...NW winds 5 to 10 kt...becoming N in the afternoon. Waves
1 ft. A chance of showers.
.FRI NIGHT...NE winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.SAT...SE winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...S winds 15 to 20 kt. Waves 1 to 2 ft.
.SUN...SW winds 15 to 20 kt...becoming NW 10 to 15 kt after
midnight. Waves 2 ft. A chance of showers through the day, then
showers through the night.
.MON...N winds 10 to 15 kt...becoming NW after midnight. Waves 1 to
2 ft. Showers, mainly in the morning.

$$

ANZ542-040800-
Patuxent River to Broomes Island MD-
136 PM EDT Thu Apr 3 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING...

.THIS AFTERNOON...SW winds 15 kt with gusts to 25 kt. Waves 1 ft. A
slight chance of showers.
.TONIGHT...SW winds 10 kt with gusts to 20 kt. Waves 1 ft. A chance
of showers.
.FRI...W winds 5 to 10 kt...becoming N in the afternoon. Waves 1 ft.
A chance of showers.
.FRI NIGHT...NE winds 5 kt. Waves less than 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 NW after midnight. Waves
1 ft. A chance of showers through the day, then showers with a
chance of tstms through the night.
.MON...N winds 5 to 10 kt. Waves 1 ft. Showers, mainly in the
morning.

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

$$

ANZ534-040800-
Chesapeake Bay from Drum Point to Smith Point-
136 PM EDT Thu Apr 3 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING...

.THIS AFTERNOON...S winds 15 kt with gusts to 20 kt. Waves 3 ft.
.TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 2 to
3 ft.
.FRI...SW winds 10 to 15 kt...becoming N in the afternoon. Waves
1 to 2 ft. A chance of showers.
.FRI NIGHT...E winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.
.SAT...SE winds 10 kt. Waves 1 ft.
.SAT NIGHT...S winds 15 to 20 kt with gusts to 25 kt. Waves 2 to
3 ft.
.SUN...SW winds 15 to 20 kt...becoming W after midnight. Waves 2 to
3 ft. A chance of showers through the day, then showers with a
chance of tstms through the night.
.MON...N winds 10 to 15 kt. Waves 1 to 2 ft. Showers. A chance of
showers after midnight.

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

$$

ANZ543-040800-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
136 PM EDT Thu Apr 3 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING...

.THIS AFTERNOON...S winds 15 kt with gusts to 25 kt. Waves 2 ft.
.TONIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.FRI...SW winds 10 to 15 kt with gusts to 20 kt... becoming N 5 to
10 kt in the afternoon. Waves 1 to 2 ft. A chance of showers.
.FRI NIGHT...E winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.
.SAT...SE winds 10 kt. Waves 1 ft.
.SAT NIGHT...S winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.SUN...SW winds 15 to 20 kt. Waves 2 ft. A chance of showers through
the day, then showers with a chance of tstms through the night.
.MON...N winds 10 to 15 kt. Waves 1 ft. Showers. A chance of showers
after midnight.

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

$$