617
FZUS51 KLWX 280835
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
434 AM EDT Fri Mar 28 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.

ANZ500-282300-
434 AM EDT Fri Mar 28 2025

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

A warm front approaching from the Ohio River Valley will lift across
 the Mid-Atlantic today, then linger near the area this weekend. Low
 pressure will move across the Great Lakes Sunday into Monday
dragging a cold front across the region. High pressure will follow
for Tuesday. Small Craft Advisories may be needed at times through
Monday.  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.

$$

ANZ535-282300-
Tidal Potomac from Key Bridge to Indian Head-
434 AM EDT Fri Mar 28 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM EDT THIS AFTERNOON
THROUGH THIS EVENING...

.REST OF THE OVERNIGHT...S winds 5 kt. Waves less than 1 ft.
.TODAY...SW winds 5 to 10 kt. Gusts up to 20 kt in the afternoon.
Waves 1 ft. Scattered showers.
.TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt early in the
evening. Waves 1 ft.
.SAT...SW winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
.SAT NIGHT...SW winds 5 to 10 kt. Waves 1 ft.
.SUN...SW winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
.SUN NIGHT...S winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft. A
chance of showers.
.MON...SW winds 10 to 15 kt...becoming W 5 to 10 kt. Waves 1 ft. A
chance of showers in the morning, then a chance of tstms through the
night. Showers.
.TUE...N winds 5 to 10 kt. Waves 1 ft.

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

$$

ANZ536-282300-
Tidal Potomac from Indian Head to Cobb Island-
434 AM EDT Fri Mar 28 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM EDT THIS AFTERNOON
THROUGH THIS EVENING...

.REST OF THE OVERNIGHT...SW winds 5 kt. Waves less than 1 ft.
.TODAY...SW winds 5 to 10 kt. Gusts up to 20 kt in the late morning
and afternoon. Waves 1 ft.
.TONIGHT...SW winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
.SAT...SW winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...SW winds 5 to 10 kt. Waves 1 ft.
.SUN...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.SUN NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. A
chance of showers.
.MON...SW winds 10 to 15 kt...becoming NW after midnight. Waves
1 ft. A chance of showers in the morning, then a chance of tstms
through the night. Showers likely.
.TUE...N winds 10 to 15 kt...becoming NE 5 kt. Waves 1 ft.

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

$$

ANZ537-282300-
Tidal Potomac from Cobb Island to Smith Point-
434 AM EDT Fri Mar 28 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM EDT THIS MORNING...
...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH SATURDAY
MORNING...

.REST OF THE OVERNIGHT...SW winds 10 kt. Waves 2 ft.
.TODAY...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt. Waves 1 to 2 ft.
.SAT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.SAT NIGHT...SW winds 10 kt. Waves 1 ft.
.SUN...SW winds 10 to 15 kt. Waves 1 ft.
.SUN NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft. A chance of showers.
.MON...SW winds 10 to 15 kt...becoming NW after midnight. Waves
2 ft. A chance of showers in the morning, then a chance of tstms
through the night. Showers.
.TUE...N winds 10 to 15 kt...becoming NE 5 to 10 kt after midnight.
Waves 1 to 2 ft. A chance of showers in the morning.

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

$$

ANZ530-282300-
Chesapeake Bay north of Pooles Island-
434 AM EDT Fri Mar 28 2025

.REST OF THE OVERNIGHT...SW winds 5 kt. Waves less than 1 ft.
.TODAY...SW winds 5 to 10 kt. Waves 1 ft.
.TONIGHT...SW winds 5 to 10 kt. Waves 1 ft. Scattered showers.
.SAT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.SAT NIGHT...SW winds 5 to 10 kt. Waves 1 ft.
.SUN...S winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
.SUN NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. A
chance of showers.
.MON...S winds 10 to 15 kt...becoming NW after midnight. Waves 1 to
2 ft. A chance of showers in the morning, then a chance of tstms
through the night. Showers.
.TUE...NW winds 10 to 15 kt...becoming N 5 kt. Waves 1 ft.

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

$$

ANZ531-282300-
Chesapeake Bay from Pooles Island to Sandy Point-
434 AM EDT Fri Mar 28 2025

.REST OF THE OVERNIGHT...SW winds 10 kt. Waves 2 ft.
.TODAY...S winds 5 to 10 kt. Waves 1 ft. Scattered showers.
.TONIGHT...SW winds 5 to 10 kt. Waves 1 to 2 ft. Scattered showers.
.SAT...SW winds 10 to 15 kt. Waves 2 ft.
.SAT NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.SUN...S winds 10 to 15 kt. Waves 1 to 2 ft.
.SUN NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A
chance of showers.
.MON...S winds 10 to 15 kt...becoming NW after midnight. Waves 2 ft.
A chance of showers in the morning, then a chance of tstms through
the night. Showers.
.TUE...N winds 10 to 15 kt...becoming NE 5 to 10 kt after midnight.
Waves 1 to 2 ft.

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

$$

ANZ538-282300-
Patapsco River including Baltimore Harbor-
434 AM EDT Fri Mar 28 2025

.REST OF THE OVERNIGHT...W winds 5 kt. Waves less than 1 ft.
.TODAY...SW winds 5 to 10 kt. Waves 1 ft or less. Scattered showers.
.TONIGHT...SW winds 5 to 10 kt. Waves 1 ft. Scattered showers.
.SAT...SW winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
.SAT NIGHT...SW winds 5 to 10 kt. Waves 1 ft.
.SUN...S winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...S winds 10 kt. Waves 1 ft. A chance of showers.
.MON...S winds 10 to 15 kt...becoming W. Waves 1 ft. A chance of
showers in the morning, then a chance of tstms through the night.
Showers.
.TUE...N winds 5 to 10 kt. Waves 1 ft or less.

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

$$

ANZ539-282300-
Chester River to Queenstown MD-
434 AM EDT Fri Mar 28 2025

.REST OF THE OVERNIGHT...S winds 10 kt. Waves 1 ft.
.TODAY...SW winds 5 to 10 kt. Waves 1 ft.
.TONIGHT...SW winds 10 to 15 kt. Waves 1 to 2 ft.
.SAT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.SAT NIGHT...SW winds 10 kt. Waves 1 ft.
.SUN...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.SUN NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A
chance of showers.
.MON...S winds 15 kt...becoming NW after midnight. Waves 2 ft. A
chance of showers in the morning, then a chance of tstms through the
night. Showers.
.TUE...NW winds 10 to 15 kt...becoming NE 5 to 10 kt. Waves 1 to
2 ft.

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

$$

ANZ532-282300-
Chesapeake Bay from Sandy Point to North Beach-
434 AM EDT Fri Mar 28 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH SATURDAY
MORNING...

.REST OF THE OVERNIGHT...S winds 10 kt. Waves 2 ft.
.TODAY...S winds 5 to 10 kt. Waves 1 to 2 ft.
.TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SAT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SAT NIGHT...SW winds 10 kt. Waves 1 to 2 ft.
.SUN...S winds 10 to 15 kt. Waves 1 to 2 ft.
.SUN NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A
chance of showers.
.MON...S winds 15 kt...becoming NW after midnight. Waves 2 ft. A
chance of showers in the morning, then a chance of tstms through the
night. Showers.
.TUE...N winds 10 to 15 kt...becoming NE 5 to 10 kt after midnight.
Waves 1 to 2 ft.

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

$$

ANZ540-282300-
Eastern Bay-
434 AM EDT Fri Mar 28 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH SATURDAY
MORNING...

.REST OF THE OVERNIGHT...S winds 10 kt. Waves 1 ft.
.TODAY...SW winds 5 to 10 kt. Waves 1 ft.
.TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft.
.SAT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.SAT NIGHT...SW winds 10 kt. Waves 1 ft.
.SUN...S winds 10 to 15 kt. Waves 1 ft.
.SUN NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft. A chance of showers.
.MON...SW winds 10 to 15 kt...becoming NW after midnight. Waves
2 ft. A chance of showers in the morning, then a chance of tstms
through the night. Showers.
.TUE...NW winds 10 to 15 kt...becoming NE 5 to 10 kt. Waves 1 to
2 ft. A chance of showers in the morning.

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

$$

ANZ533-282300-
Chesapeake Bay from North Beach to Drum Point-
434 AM EDT Fri Mar 28 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH SATURDAY
MORNING...

.REST OF THE OVERNIGHT...SW winds 10 kt. Waves 2 ft.
.TODAY...SW winds 5 to 10 kt. Waves 1 to 2 ft.
.TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt. Waves 2 ft.
.SAT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SAT NIGHT...SW winds 10 kt. Waves 1 ft.
.SUN...S winds 10 to 15 kt. Waves 1 to 2 ft.
.SUN NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A
chance of showers.
.MON...SW winds 10 to 15 kt...becoming NW after midnight. Waves
2 ft. A chance of showers in the morning, then a chance of tstms
through the night. Showers.
.TUE...N winds 10 to 15 kt...becoming NE 5 to 10 kt after midnight.
Waves 1 to 2 ft. A chance of showers in the morning.

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

$$

ANZ541-282300-
Choptank River to Cambridge MD and the Little Choptank River-
434 AM EDT Fri Mar 28 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH SATURDAY
MORNING...

.REST OF THE OVERNIGHT...SW winds 10 kt. Waves 1 ft.
.TODAY...SW winds 5 to 10 kt. Waves 1 ft.
.TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft.
.SAT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.SAT NIGHT...SW winds 10 kt. Waves 1 ft.
.SUN...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.SUN NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A
chance of showers.
.MON...S winds 10 to 15 kt...becoming NW after midnight. Waves 2 ft.
A chance of showers in the morning, then a chance of tstms through
the night. Showers.
.TUE...N winds 10 to 15 kt...becoming NE 5 to 10 kt after midnight.
Waves 1 to 2 ft. A chance of showers in the morning.

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

$$

ANZ542-282300-
Patuxent River to Broomes Island MD-
434 AM EDT Fri Mar 28 2025

.REST OF THE OVERNIGHT...SW winds 5 kt. Waves less than 1 ft.
.TODAY...SW winds 5 to 10 kt. Waves 1 ft.
.TONIGHT...SW winds 10 to 15 kt. Waves 1 ft.
.SAT...SW winds 10 kt. Waves 1 ft.
.SAT NIGHT...SW winds 10 kt. Waves 1 ft.
.SUN...S winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...S winds 10 kt. Waves 1 ft. A chance of showers.
.MON...SW winds 10 to 15 kt...becoming NW after midnight. Waves
1 ft. A chance of showers in the morning, then a chance of tstms
through the night. Showers.
.TUE...N winds 5 to 10 kt. Waves 1 ft. A chance of showers in the
morning.

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

$$

ANZ534-282300-
Chesapeake Bay from Drum Point to Smith Point-
434 AM EDT Fri Mar 28 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM EDT THIS MORNING...
...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH SATURDAY
MORNING...

.REST OF THE OVERNIGHT...SW winds 15 kt with gusts to 20 kt. Waves
2 ft.
.TODAY...SW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt... increasing to
25 kt after midnight. Waves 2 to 3 ft.
.SAT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SAT NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SUN...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SUN NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 to
3 ft. A chance of showers.
.MON...S winds 15 kt...becoming NW after midnight. Waves 2 to 3 ft.
A chance of showers in the morning, then a chance of tstms through
the night. Showers.
.TUE...N winds 10 to 15 kt...becoming NE 5 to 10 kt after midnight.
Waves 2 to 3 ft...subsiding to 1 ft after midnight. A chance of
showers in the morning.

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

$$

ANZ543-282300-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
434 AM EDT Fri Mar 28 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM EDT THIS MORNING...
...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH SATURDAY
MORNING...

.REST OF THE OVERNIGHT...S winds 15 kt with gusts to 20 kt. Waves
2 ft.
.TODAY...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.TONIGHT...SW winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft.
.SAT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.SAT NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.SUN...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.SUN NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A
chance of showers.
.MON...S winds 10 to 15 kt...becoming NW after midnight. Waves 2 ft.
A chance of showers in the morning, then a chance of tstms through
the night. Showers.
.TUE...N winds 10 to 15 kt...becoming NE 5 to 10 kt after midnight.
Waves 1 to 2 ft. A chance of showers in the morning.

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

$$