National Weather Service Marine Forecast FZUS51 KLWX

FZUS51 KLWX 312334
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
734 PM EDT Fri Mar 31 2023

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. 

ANZ500-010800-
734 PM EDT Fri Mar 31 2023

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

A strong area of low pressure combined with a cold front is likely
to produce gale conditions as it passes late tonight into Saturday
night. High pressure returns Sunday before sliding east of the
waters Monday. The next frontal system approaches the waters by
Tuesday and looks to linger through midweek. Small Craft Advisories
may be needed late Saturday into portions of Sunday, and again early
 next week.


ANZ535-010800-
Tidal Potomac from Key Bridge to Indian Head-
734 PM EDT Fri Mar 31 2023

SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT SATURDAY

...GALE WARNING IN EFFECT FROM 6 AM EDT SATURDAY THROUGH SATURDAY
AFTERNOON...
...STORM WARNING IN EFFECT FROM SATURDAY EVENING THROUGH LATE
SATURDAY NIGHT...

TONIGHT
SW winds 10 to 15 kt with gusts to 25 kt. Waves 1 ft. A
chance of showers this evening, then showers likely after midnight.

SAT
SW winds 15 to 20 kt. Gusts up to 30 kt... increasing to
40 kt late. Waves 2 ft. Showers. Vsby 1 NM or less.

SAT NIGHT
W winds 20 to 25 kt with gusts to 50 kt... becoming NW
15 kt with gusts to 35 kt after midnight. Waves 2 to 3 ft. A chance
of showers.

SUN
NW winds 10 to 15 kt with gusts to 25 kt. Waves 1 ft.

SUN NIGHT
E winds around 5 kt. Waves 1 ft.

MON
S winds 10 to 15 kt with gusts to 25 kt. Waves 1 to 2 ft.

MON NIGHT
S winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.

TUE
S winds 5 to 10 kt. Waves 1 ft.

WED
S winds 10 to 15 kt. Waves 1 ft. A chance of showers.


ANZ536-010800-
Tidal Potomac from Indian Head to Cobb Island-
734 PM EDT Fri Mar 31 2023

SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT SATURDAY

...GALE WARNING IN EFFECT FROM 6 AM EDT SATURDAY THROUGH SATURDAY
AFTERNOON...
...STORM WARNING IN EFFECT FROM SATURDAY EVENING THROUGH LATE
SATURDAY NIGHT...

TONIGHT
SW winds 10 to 15 kt with gusts to 25 kt. Waves 1 to
2 ft. Showers likely.

SAT
SW winds 15 to 20 kt. Gusts up to 30 kt... increasing to
40 kt late. Waves 2 ft. Showers. Vsby 1 NM or less.

SAT NIGHT
W winds 20 to 25 kt with gusts to 50 kt... becoming NW
15 to 20 kt with gusts to 30 kt after midnight. Waves 2 to 3 ft.

SUN
NW winds 15 to 20 kt. Gusts up to 30 kt... diminishing to
20 kt in the afternoon. Waves 1 to 2 ft.

SUN NIGHT
E winds around 5 kt. Waves 1 ft.

MON
S winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.

MON NIGHT
S winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.

TUE
S winds 5 to 10 kt. Waves 1 ft.

WED
S winds 10 to 15 kt. Waves 1 ft. A chance of showers through
the night.


ANZ537-010800-
Tidal Potomac from Cobb Island to Smith Point-
734 PM EDT Fri Mar 31 2023

SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT SATURDAY

...GALE WARNING IN EFFECT FROM 6 AM EDT SATURDAY THROUGH LATE
SATURDAY NIGHT...

TONIGHT
SW winds 15 to 20 kt with gusts to 25 kt. Waves 2 to
3 ft. Showers likely.

SAT
SW winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft.
Showers.

SAT NIGHT
W winds 20 to 25 kt...becoming NW after midnight. Gusts
up to 35 kt. Waves 4 ft. A chance of showers.

SUN
NW winds 20 to 25 kt with gusts to 30 kt... diminishing to
10 to 15 kt with gusts to 20 kt in the afternoon. Waves 4 ft...
subsiding to 2 ft in the afternoon.

SUN NIGHT
NE winds 5 kt...becoming SE after midnight. Waves 1 ft.

MON
S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.

MON NIGHT
S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.

TUE
S winds 10 kt. Waves 1 ft.

WED
S winds 10 to 15 kt. Waves 1 to 2 ft. A chance of showers
through the night.


ANZ530-010800-
Chesapeake Bay north of Pooles Island-
734 PM EDT Fri Mar 31 2023

SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT SATURDAY

...GALE WARNING IN EFFECT FROM 6 AM EDT SATURDAY THROUGH SATURDAY
AFTERNOON...
...STORM WARNING IN EFFECT FROM SATURDAY EVENING THROUGH LATE
SATURDAY NIGHT...

TONIGHT
SW winds 15 kt with gusts to 25 kt. Waves 2 ft. A chance
of showers this evening, then showers with a slight chance of tstms
after midnight.

SAT
SW winds 15 to 20 kt with gusts to 30 kt. Waves 2 to 3 ft.
Showers. Vsby 1 NM or less.

SAT NIGHT
W winds 20 to 25 kt with gusts to 50 kt... becoming NW
15 to 20 kt with gusts to 30 kt late. Waves 3 ft. A chance of
showers.

SUN
NW winds 15 to 20 kt. Gusts up to 30 kt... diminishing to
20 kt in the afternoon. Waves 1 to 2 ft.

SUN NIGHT
N winds 5 to 10 kt...becoming SE after midnight. Waves
1 ft or less.

MON
S winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft.

MON NIGHT
S winds 10 to 15 kt. Gusts up to 25 kt in the evening.
Waves 1 to 2 ft.

TUE
S winds 5 to 10 kt. Waves 1 ft. A chance of showers after
midnight.

WED
S winds 10 to 15 kt. Waves 1 ft. A chance of showers. 

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


ANZ531-010800-
Chesapeake Bay from Pooles Island to Sandy Point-
734 PM EDT Fri Mar 31 2023

SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT SATURDAY

...GALE WARNING IN EFFECT FROM 6 AM EDT SATURDAY THROUGH SATURDAY
AFTERNOON...
...STORM WARNING IN EFFECT FROM SATURDAY EVENING THROUGH LATE
SATURDAY NIGHT...

TONIGHT
SW winds 15 kt with gusts to 25 kt. Waves 2 ft. A chance
of showers this evening, then showers with a slight chance of tstms
after midnight with vsby 1 to 3 NM.

SAT
SW winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft.
Showers. Vsby 1 NM or less.

SAT NIGHT
W winds 20 to 25 kt with gusts to 50 kt... becoming NW
with gusts to 30 kt late. Waves 4 ft. A chance of showers.

SUN
NW winds 20 to 25 kt with gusts to 30 kt... diminishing to
10 to 15 kt with gusts to 20 kt in the afternoon. Waves 4 ft...
subsiding to 2 ft in the afternoon.

SUN NIGHT
N winds 5 to 10 kt...becoming SE after midnight. Waves
1 ft.

MON
S winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft.

MON NIGHT
S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.

TUE
S winds 5 to 10 kt. Waves 1 ft. A chance of showers through
the night.

WED
S winds 10 to 15 kt. Waves 1 to 2 ft. A chance of showers. 

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


ANZ538-010800-
Patapsco River including Baltimore Harbor-
734 PM EDT Fri Mar 31 2023

SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT SATURDAY

...GALE WARNING IN EFFECT FROM 6 AM EDT SATURDAY THROUGH SATURDAY
AFTERNOON...
...STORM WARNING IN EFFECT FROM SATURDAY EVENING THROUGH LATE
SATURDAY NIGHT...

TONIGHT
SW winds 10 to 15 kt with gusts to 25 kt. Waves 1 to
2 ft. A chance of showers this evening, then showers with a slight
chance of tstms after midnight with vsby 1 to 3 NM.

SAT
SW winds 15 to 20 kt. Gusts up to 25 kt... increasing to
35 kt late. Waves 2 ft. Showers. Vsby 1 NM or less.

SAT NIGHT
W winds 20 to 25 kt. Gusts up to 50 kt... diminishing
to 30 kt. Waves 2 to 3 ft. A chance of showers.

SUN
NW winds 15 to 20 kt. Gusts up to 30 kt... diminishing to
20 kt in the afternoon. Waves 1 to 2 ft.

SUN NIGHT
N winds 5 to 10 kt...becoming SE after midnight. Waves
1 ft or less.

MON
S winds 5 to 10 kt...increasing to 15 kt in the afternoon.
Gusts up to 20 kt. Waves 1 to 2 ft.

MON NIGHT
S winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.

TUE
S winds 5 to 10 kt. Waves 1 ft.

WED
S winds 10 to 15 kt. Waves 1 ft. A chance of showers. 

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


ANZ539-010800-
Chester River to Queenstown MD-
734 PM EDT Fri Mar 31 2023

SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT SATURDAY

...GALE WARNING IN EFFECT FROM 6 AM EDT SATURDAY THROUGH LATE
SATURDAY NIGHT...

TONIGHT
SW winds 15 kt with gusts to 25 kt. Waves 2 ft. A chance
of showers this evening, then showers with a slight chance of tstms
after midnight.

SAT
SW winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft.
Showers. Vsby 1 NM or less.

SAT NIGHT
W winds 20 to 25 kt with gusts to 45 kt... becoming NW
with gusts to 30 kt late. Waves 4 ft. A chance of showers.

SUN
NW winds 20 to 25 kt with gusts to 30 kt... diminishing to
10 to 15 kt with gusts to 20 kt in the afternoon. Waves 4 ft...
subsiding to 2 ft in the afternoon.

SUN NIGHT
N winds 5 kt...becoming SE after midnight. Waves 1 ft.

MON
S winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft.

MON NIGHT
S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.

TUE
S winds 10 kt. Waves 1 ft. A chance of showers after
midnight.

WED
S winds 10 to 15 kt. Waves 1 to 2 ft. A chance of showers. 

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


ANZ532-010800-
Chesapeake Bay from Sandy Point to North Beach-
734 PM EDT Fri Mar 31 2023

SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT SATURDAY

...GALE WARNING IN EFFECT FROM 6 AM EDT SATURDAY THROUGH SATURDAY
AFTERNOON...
...STORM WARNING IN EFFECT FROM SATURDAY EVENING THROUGH LATE
SATURDAY NIGHT...

TONIGHT
SW winds 15 kt with gusts to 25 kt. Waves 2 to 3 ft. A
chance of showers this evening, then showers with a slight chance of
tstms after midnight.

SAT
SW winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft.
Showers. Vsby 1 NM or less.

SAT NIGHT
W winds 20 to 25 kt. Gusts up to 50 kt... diminishing
to 30 kt. Waves 4 ft. A chance of showers.

SUN
NW winds 20 to 25 kt with gusts to 30 kt... diminishing to
10 to 15 kt with gusts to 20 kt in the afternoon. Waves 4 ft...
subsiding to 2 ft in the afternoon.

SUN NIGHT
N winds 5 kt...becoming SE after midnight. Waves 1 ft.

MON
S winds 10 to 15 kt with gusts to 20 kt. Waves 2 to 3 ft.

MON NIGHT
S winds 10 to 15 kt with gusts to 20 kt. Waves 2 to
3 ft.

TUE
S winds 10 kt. Waves 1 to 2 ft.

WED
S winds 10 to 15 kt. Waves 2 ft. A chance of showers. 

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


ANZ540-010800-
Eastern Bay-
734 PM EDT Fri Mar 31 2023

SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT SATURDAY

...GALE WARNING IN EFFECT FROM 6 AM EDT SATURDAY THROUGH LATE
SATURDAY NIGHT...

TONIGHT
SW winds 15 kt with gusts to 25 kt. Waves 2 ft. A chance
of showers this evening, then showers with a slight chance of tstms
after midnight.

SAT
SW winds 15 to 20 kt with gusts to 30 kt. Waves 2 to 3 ft.
Showers.

SAT NIGHT
W winds 20 to 25 kt with gusts to 45 kt... becoming NW
with gusts to 30 kt late. Waves 3 ft. A chance of showers.

SUN
NW winds 20 to 25 kt with gusts to 30 kt... diminishing to
10 to 15 kt with gusts to 20 kt in the afternoon. Waves 2 to 3 ft.

SUN NIGHT
E winds 5 kt. Waves less than 1 ft.

MON
S winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft.

MON NIGHT
S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.

TUE
S winds 10 kt. Waves 1 ft.

WED
S winds 10 to 15 kt. Waves 1 to 2 ft. A chance of showers. 

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


ANZ533-010800-
Chesapeake Bay from North Beach to Drum Point-
734 PM EDT Fri Mar 31 2023

SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT SATURDAY

...GALE WARNING IN EFFECT FROM 6 AM EDT SATURDAY THROUGH SATURDAY
AFTERNOON...
...STORM WARNING IN EFFECT FROM SATURDAY EVENING THROUGH LATE
SATURDAY NIGHT...

GALE WARNING IN EFFECT LATE SATURDAY NIGHT


TONIGHT
SW winds 15 to 20 kt with gusts to 25 kt. Waves 2 to
3 ft. A chance of showers this evening, then showers after midnight.

SAT
SW winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft.
Showers.

SAT NIGHT
W winds 20 to 25 kt with gusts to 50 kt... becoming NW
with gusts to 35 kt late. Waves 4 ft. A chance of showers.

SUN
NW winds 20 to 25 kt with gusts to 35 kt... diminishing to
10 to 15 kt with gusts to 20 kt in the afternoon. Waves 3 ft.

SUN NIGHT
NE winds 5 kt...becoming SE after midnight. Waves 1 ft.

MON
S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.

MON NIGHT
S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.

TUE
S winds 10 kt. Waves 1 to 2 ft.

WED
S winds 10 to 15 kt. Waves 2 ft. A chance of showers.


ANZ541-010800-
Choptank River to Cambridge MD and the Little Choptank River-
734 PM EDT Fri Mar 31 2023

SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT SATURDAY

...GALE WARNING IN EFFECT FROM 6 AM EDT SATURDAY THROUGH LATE
SATURDAY NIGHT...

TONIGHT
SW winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft. A
chance of showers this evening, then showers after midnight.

SAT
SW winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft.
Showers. Vsby 1 NM or less.

SAT NIGHT
W winds 20 to 25 kt with gusts to 45 kt... becoming NW
with gusts to 40 kt after midnight. Waves 4 ft. A chance of showers.

SUN
NW winds 20 to 25 kt with gusts to 35 kt... diminishing to
10 to 15 kt with gusts to 20 kt in the afternoon. Waves 2 to 3 ft.

SUN NIGHT
NE winds 5 kt...becoming SE after midnight. Waves 1 ft.

MON
S winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft.

MON NIGHT
S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.

TUE
S winds 10 kt. Waves 1 ft.

WED
S winds 10 to 15 kt. Waves 1 to 2 ft. A chance of showers.


ANZ542-010800-
Patuxent River to Broomes Island MD-
734 PM EDT Fri Mar 31 2023

SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT SATURDAY

...GALE WARNING IN EFFECT FROM 6 AM EDT SATURDAY THROUGH SATURDAY
AFTERNOON...
...STORM WARNING IN EFFECT FROM SATURDAY EVENING THROUGH LATE
SATURDAY NIGHT...

TONIGHT
SW winds 15 kt with gusts to 25 kt. Waves 1 ft. A chance
of showers this evening, then showers likely after midnight.

SAT
SW winds 15 to 20 kt with gusts to 30 kt. Waves 1 ft.
Showers.

SAT NIGHT
W winds 15 to 20 kt with gusts to 50 kt... becoming NW
with gusts to 30 kt late. Waves 1 to 2 ft. A chance of showers.

SUN
NW winds 15 to 20 kt with gusts to 30 kt... diminishing to
5 to 10 kt with gusts to 20 kt in the afternoon. Waves 1 ft.

SUN NIGHT
E winds 5 kt. Waves less than 1 ft.

MON
S winds 5 to 10 kt...increasing to 15 kt in the afternoon.
Gusts up to 20 kt. Waves 1 ft.

MON NIGHT
S winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.

TUE
S winds 10 kt. Waves 1 ft.

WED
S winds 10 to 15 kt. Waves 1 ft. A chance of showers.


ANZ534-010800-
Chesapeake Bay from Drum Point to Smith Point-
734 PM EDT Fri Mar 31 2023

SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT SATURDAY

...GALE WARNING IN EFFECT FROM 6 AM EDT SATURDAY THROUGH LATE
SATURDAY NIGHT...

TONIGHT
SW winds 15 to 20 kt. Gusts up to 25 kt... increasing to
30 kt late. Waves 3 ft. Showers likely.

SAT
SW winds 20 to 25 kt with gusts to 30 kt. Waves 4 ft.
Showers.

SAT NIGHT
SW winds 20 kt...becoming NW in the late evening and
overnight. Gusts up to 35 kt. Waves 4 ft. A chance of showers.

SUN
NW winds 20 to 25 kt. Gusts up to 35 kt... diminishing to
25 kt in the afternoon. Waves 5 ft...subsiding to 3 ft in the
afternoon.

SUN NIGHT
NE winds 5 to 10 kt...becoming SE after midnight. Waves
1 ft.

MON
S winds 10 to 15 kt with gusts to 25 kt. Waves 2 to 3 ft.

MON NIGHT
S winds 10 to 15 kt with gusts to 25 kt. Waves 3 ft.

TUE
S winds 10 to 15 kt. Waves 2 ft.

WED
S winds 10 to 15 kt. Waves 2 to 3 ft. A chance of showers.


ANZ543-010800-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
734 PM EDT Fri Mar 31 2023

SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT SATURDAY

...GALE WARNING IN EFFECT FROM 6 AM EDT SATURDAY THROUGH LATE
SATURDAY NIGHT...

TONIGHT
S winds 15 to 20 kt...increasing to 25 kt late. Gusts up
to 30 kt. Waves 2 to 3 ft. A chance of showers this evening, then
showers likely after midnight.

SAT
SW winds 20 to 25 kt with gusts to 35 kt. Waves 3 ft.
Showers. Vsby 1 to 3 NM.

SAT NIGHT
W winds 20 to 25 kt...becoming NW after midnight. Gusts
up to 35 kt. Waves 3 ft. A chance of showers.

SUN
NW winds 20 to 25 kt. Gusts up to 35 kt... diminishing to
25 kt in the afternoon. Waves 2 to 3 ft.

SUN NIGHT
N winds 5 to 10 kt...becoming SE after midnight. Waves
1 ft.

MON
S winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.

MON NIGHT
S winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.

TUE
S winds 10 to 15 kt. Waves 1 ft.

WED
S winds 10 to 15 kt. Waves 2 ft. A chance of showers.