Fort Mchenry Marsh, MD Coastal Forecast

FZUS51 KLWX 271434
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
1034 AM EDT Tue May 27 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.

ANZ500-272000-
1034 AM EDT Tue May 27 2025

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

High pressure will extend into the area today while a front remains
stalled across the southeastern states. An area of low pressure
moves just south of the local waters tonight through Thursday,
bringing periods of showers and some thunderstorms.

$$

ANZ535-272000-
Tidal Potomac from Key Bridge to Indian Head-
1034 AM EDT Tue May 27 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM WEDNESDAY MORNING THROUGH
WEDNESDAY EVENING...

.REST OF TODAY...SE winds 5 to 10 kt. Waves 1 ft. Scattered showers
this afternoon.
.TONIGHT...SE winds 5 to 10 kt...becoming E late. Waves 1 ft.
Showers. Vsby 1 to 3 NM.
.WED...E winds 10 kt with gusts to 20 kt. Waves 1 ft. Showers. Vsby
1 to 3 NM.
.WED NIGHT...NE winds 5 to 10 kt. Gusts up to 20 kt in the evening.
Waves 1 ft. A chance of showers.
.THU...W winds 5 kt. Waves less than 1 ft. A chance of showers.
.THU NIGHT...SW winds around 5 kt. Waves 1 ft. A chance of showers.
.FRI...W winds around 5 kt. Waves 1 ft. A chance of showers. A
chance of tstms through the night.
.SAT...W winds 5 to 10 kt. Waves 1 ft. A chance of showers.

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

$$

ANZ536-272000-
Tidal Potomac from Indian Head to Cobb Island-
1034 AM EDT Tue May 27 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM WEDNESDAY MORNING THROUGH
WEDNESDAY EVENING...

.REST OF TODAY...SE winds 5 to 10 kt. Waves 1 ft. Scattered showers
this afternoon.
.TONIGHT...E winds 5 to 10 kt. Waves 1 ft. Showers. Vsby 1 to 3 NM.
.WED...E winds 10 to 15 kt. Gusts up to 25 kt... increasing to 30 kt
in the afternoon. Waves 2 ft. Showers. Vsby 1 NM or less.
.WED NIGHT...NE winds 10 to 15 kt with gusts to 25 kt...becoming N
5 to 10 kt after midnight. Waves 1 to 2 ft. A chance of showers.
.THU...W winds 5 kt. Waves less than 1 ft. A chance of showers.
.THU NIGHT...SW winds 5 kt. Waves less than 1 ft. A chance of
showers.
.FRI...W winds 5 kt. Waves less than 1 ft. A chance of showers. A
chance of tstms through the night.
.SAT...W winds 5 to 10 kt. Waves 1 ft. A chance of showers.

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

$$

ANZ537-272000-
Tidal Potomac from Cobb Island to Smith Point-
1034 AM EDT Tue May 27 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH LATE
WEDNESDAY NIGHT...

.REST OF TODAY...SE winds 10 to 15 kt. Waves 1 to 2 ft. Scattered
showers this afternoon.
.TONIGHT...E winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
Showers. Vsby 1 to 3 NM.
.WED...E winds 15 to 20 kt with gusts to 30 kt. Waves 4 ft. Showers.
Vsby 1 NM or less.
.WED NIGHT...E winds 15 to 20 kt with gusts to 30 kt...becoming NW
10 kt with gusts to 20 kt after midnight. Waves 4 ft...subsiding to
2 ft after midnight. A chance of showers.
.THU...W winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.THU NIGHT...SW winds 5 kt. Waves less than 1 ft. A chance of
showers.
.FRI...W winds 5 to 10 kt. Waves 1 ft. A chance of showers. A chance
of tstms through the night.
.SAT...W winds 5 to 10 kt. Waves 1 ft. A chance of showers.

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

$$

ANZ530-272000-
Chesapeake Bay north of Pooles Island-
1034 AM EDT Tue May 27 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH LATE
WEDNESDAY NIGHT...

.REST OF TODAY...SE winds 5 to 10 kt. Waves 1 ft.
.TONIGHT...SE winds 5 to 10 kt. Waves 1 ft. Numerous showers.
.WED...E winds 10 to 15 kt with gusts to 25 kt. Waves 1 ft. Showers.
Vsby 1 NM or less.
.WED NIGHT...E winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
Showers likely.
.THU...N winds 5 to 10 kt...becoming W in the afternoon. Waves 1 ft.
A chance of showers.
.THU NIGHT...SW winds 5 kt. Waves less than 1 ft. A chance of
showers.
.FRI...W winds 5 kt. Waves less than 1 ft. A chance of showers.
.SAT...W winds 5 to 10 kt. Waves 1 ft. A chance of showers.

$$

ANZ531-272000-
Chesapeake Bay from Pooles Island to Sandy Point-
1034 AM EDT Tue May 27 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH LATE
WEDNESDAY NIGHT...

.REST OF TODAY...SE winds 5 to 10 kt. Waves 1 ft or less.
.TONIGHT...SE winds 5 to 10 kt. Waves 1 ft. Numerous showers.
.WED...E winds 15 to 20 kt with gusts to 25 kt. Waves 2 to 3 ft.
Showers. Vsby 1 NM or less.
.WED NIGHT...NE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
Showers likely.
.THU...N winds 5 to 10 kt...becoming SW in the afternoon. Waves
1 ft. A chance of showers.
.THU NIGHT...SW winds 5 kt. Waves less than 1 ft. A chance of
showers.
.FRI...W winds 5 kt. Waves less than 1 ft. A chance of showers.
.SAT...W winds 5 to 10 kt. Waves 1 ft. A chance of showers.

$$

ANZ538-272000-
Patapsco River including Baltimore Harbor-
1034 AM EDT Tue May 27 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM WEDNESDAY MORNING THROUGH
WEDNESDAY EVENING...

.REST OF TODAY...SE winds 5 to 10 kt. Waves 1 ft or less. Isolated
showers this afternoon.
.TONIGHT...SE winds 5 to 10 kt...becoming E late. Waves 1 ft.
Numerous showers.
.WED...E winds 10 to 15 kt with gusts to 25 kt. Waves 1 to 2 ft.
Showers. Vsby 1 NM or less.
.WED NIGHT...NE winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft. Showers likely.
.THU...NW winds 5 to 10 kt...becoming SW in the afternoon. Waves
1 ft. A chance of showers.
.THU NIGHT...SW winds 5 kt. Waves flat. A chance of showers.
.FRI...W winds 5 kt. Waves less than 1 ft. A chance of showers.
.SAT...W winds 5 to 10 kt. Waves 1 ft or less. A chance of showers.

$$

ANZ539-272000-
Chester River to Queenstown MD-
1034 AM EDT Tue May 27 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH LATE
WEDNESDAY NIGHT...

.REST OF TODAY...SE winds 5 to 10 kt. Waves 1 ft or less. Isolated
showers this afternoon.
.TONIGHT...SE winds 5 to 10 kt. Waves 1 ft. Numerous showers.
.WED...E winds 15 to 20 kt. Gusts up to 25 kt... increasing to 30 kt
in the afternoon. Waves 1 to 2 ft. Showers. Vsby 1 NM or less.
.WED NIGHT...NE winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
Showers likely.
.THU...N winds 5 to 10 kt...becoming SW in the afternoon. Waves
1 ft. A chance of showers.
.THU NIGHT...SW winds 5 kt. Waves less than 1 ft. A chance of
showers.
.FRI...W winds 5 kt. Waves less than 1 ft. A chance of showers. A
chance of tstms through the night.
.SAT...W winds 5 to 10 kt. Waves 1 ft. A chance of showers.

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

$$

ANZ532-272000-
Chesapeake Bay from Sandy Point to North Beach-
1034 AM EDT Tue May 27 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH LATE
WEDNESDAY NIGHT...

.REST OF TODAY...SE winds 5 to 10 kt. Waves 1 ft or less. Isolated
showers this afternoon.
.TONIGHT...SE winds 10 kt with gusts to 20 kt. Waves 2 ft. Numerous
showers. Vsby 1 to 3 NM.
.WED...E winds 15 to 20 kt with gusts to 30 kt. Waves 2 to 3 ft.
Showers. Vsby 1 NM or less.
.WED NIGHT...E winds 15 to 20 kt...becoming NE 10 kt after midnight.
Gusts up to 25 kt. Waves 2 to 3 ft. Showers likely.
.THU...NW winds 5 to 10 kt...becoming SW in the afternoon. Waves
1 ft. A chance of showers.
.THU NIGHT...SW winds 5 kt. Waves less than 1 ft. A chance of
showers.
.FRI...W winds 5 to 10 kt. Waves 1 ft. A chance of showers. A chance
of tstms through the night.
.SAT...W winds 5 to 10 kt. Waves 1 ft. A chance of showers.

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

$$

ANZ540-272000-
Eastern Bay-
1034 AM EDT Tue May 27 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH LATE
WEDNESDAY NIGHT...

.REST OF TODAY...SE winds 5 to 10 kt. Waves 1 ft or less. Isolated
showers this afternoon.
.TONIGHT...SE winds 5 to 10 kt. Waves 1 ft. Numerous showers.
.WED...E winds 15 to 20 kt. Gusts up to 20 kt... increasing to 30 kt
in the afternoon. Waves 2 ft. Showers. Vsby 1 NM or less.
.WED NIGHT...E winds 10 to 15 kt...becoming NE after midnight. Gusts
up to 25 kt. Waves 1 to 2 ft. Showers likely.
.THU...NW winds 5 to 10 kt...becoming SW in the afternoon. Waves
1 ft. A chance of showers.
.THU NIGHT...SW winds 5 kt. Waves less than 1 ft. A chance of
showers.
.FRI...W winds 5 kt. Waves less than 1 ft. A chance of showers. A
chance of tstms through the night.
.SAT...W winds 5 to 10 kt. Waves 1 ft. A chance of showers.

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

$$

ANZ533-272000-
Chesapeake Bay from North Beach to Drum Point-
1034 AM EDT Tue May 27 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH LATE
WEDNESDAY NIGHT...

.REST OF TODAY...SE winds 5 to 10 kt. Waves 1 ft or less... building
to 2 ft late. Isolated showers this afternoon.
.TONIGHT...SE winds 10 to 15 kt. Gusts up to 20 kt. Waves 2 ft.
Showers. Vsby 1 to 3 NM.
.WED...E winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft. Showers.
Vsby 1 NM or less.
.WED NIGHT...E winds 15 to 20 kt...becoming N 10 kt after midnight.
Gusts up to 25 kt. Waves 2 to 3 ft. Showers likely.
.THU...NW winds 5 to 10 kt...becoming SW in the afternoon. Waves
1 ft. A chance of showers.
.THU NIGHT...SW winds 5 kt. Waves less than 1 ft. A chance of
showers.
.FRI...W winds 5 to 10 kt. Waves 1 ft. A chance of showers. A chance
of tstms through the night.
.SAT...W winds 5 to 10 kt. Waves 1 ft. A chance of showers.

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

$$

ANZ541-272000-
Choptank River to Cambridge MD and the Little Choptank River-
1034 AM EDT Tue May 27 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH LATE
WEDNESDAY NIGHT...

.REST OF TODAY...SE winds 5 to 10 kt. Waves 1 ft or less. Isolated
showers this afternoon.
.TONIGHT...SE winds 10 kt with gusts to 20 kt. Waves 1 ft. Numerous
showers. Vsby 1 to 3 NM.
.WED...E winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft. Showers.
Vsby 1 NM or less.
.WED NIGHT...E winds 15 to 20 kt...becoming NE 10 kt after midnight.
Gusts up to 25 kt. Waves 1 to 2 ft. Showers likely.
.THU...W winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.THU NIGHT...SW winds 5 kt. Waves less than 1 ft. A chance of
showers.
.FRI...W winds 5 to 10 kt. Waves 1 ft. A chance of showers. A chance
of tstms through the night.
.SAT...W winds 5 to 10 kt. Waves 1 ft. A chance of showers.

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

$$

ANZ542-272000-
Patuxent River to Broomes Island MD-
1034 AM EDT Tue May 27 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM WEDNESDAY MORNING THROUGH
WEDNESDAY EVENING...

.REST OF TODAY...SE winds 5 to 10 kt. Waves 1 ft. Isolated showers
this afternoon.
.TONIGHT...E winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
Showers. Vsby 1 to 3 NM.
.WED...E winds 10 to 15 kt with gusts to 30 kt. Waves 1 ft. Showers.
Vsby 1 NM or less.
.WED NIGHT...E winds 10 to 15 kt with gusts to 25 kt...becoming N
5 to 10 kt after midnight. Waves 1 ft. A chance of showers.
.THU...W winds 5 kt. Waves less than 1 ft. A chance of showers.
.THU NIGHT...SW winds 5 kt. Waves less than 1 ft. A chance of
showers.
.FRI...W winds 5 to 10 kt. Waves 1 ft. A chance of showers. A chance
of tstms through the night.
.SAT...W winds 5 to 10 kt. Waves 1 ft. A chance of showers.

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

$$

ANZ534-272000-
Chesapeake Bay from Drum Point to Smith Point-
1034 AM EDT Tue May 27 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH LATE
WEDNESDAY NIGHT...

.REST OF TODAY...SE winds 10 to 15 kt. Waves 1 to 2 ft. Isolated
showers this afternoon.
.TONIGHT...E winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
Showers. Vsby 1 to 3 NM.
.WED...E winds 20 to 25 kt with gusts to 30 kt. Waves 4 ft. Showers.
Vsby 1 NM or less.
.WED NIGHT...E winds 15 to 20 kt with gusts to 30 kt...becoming N
10 to 15 kt with gusts to 20 kt after midnight. Waves 4 ft...
subsiding to 2 ft after midnight. A chance of showers.
.THU...W winds 5 to 10 kt. Waves 1 to 2 ft. A chance of showers.
.THU NIGHT...SW winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.FRI...W winds 5 to 10 kt. Waves 1 ft. A chance of showers. A chance
of tstms through the night.
.SAT...W winds 10 kt. Waves 1 ft. A chance of showers.

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

$$

ANZ543-272000-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
1034 AM EDT Tue May 27 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH LATE
WEDNESDAY NIGHT...

.REST OF TODAY...SE winds 10 to 15 kt. Waves 1 ft. Isolated showers
this afternoon.
.TONIGHT...E winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
Scattered showers. Vsby 1 to 3 NM.
.WED...E winds 15 to 20 kt with gusts to 30 kt. Waves 2 ft. Showers.
Vsby 1 NM or less.
.WED NIGHT...E winds 15 to 20 kt with gusts to 30 kt...becoming NW
10 to 15 kt with gusts to 20 kt after midnight. Waves 1 to 2 ft.
Showers likely.
.THU...W winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.THU NIGHT...SW winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.FRI...W winds 5 to 10 kt. Waves 1 ft. A chance of showers. A chance
of tstms through the night.
.SAT...W winds 10 kt. Waves 1 ft. A chance of showers and tstms in
the morning, then a chance of showers through the night.

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

$$