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National Weather Service Marine Forecast FZUS51 KLWX

FZUS51 KLWX 271737
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
136 PM EDT Tue Jul 27 2021

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. 

ANZ500-280800-
136 PM EDT Tue Jul 27 2021

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

A cold front will become stationary and eventually stall out over
the Carolinas through tonight as weak high pressure builds back into
 the region. A weak front will drop across the waters Wednesday
before a more potent cold front sweeps through the area Thursday
into Friday. Small Craft Advisories may be required for portions of
the waters Thursday through Friday.



ANZ535-280800-
Tidal Potomac from Key Bridge to Indian Head-
137 PM EDT Tue Jul 27 2021

THIS AFTERNOON
W winds 5 kt. Waves less than 1 ft. Isolated
showers.

TONIGHT
S winds around 5 kt. Waves 1 ft.

WED
NW winds around 5 kt. Waves 1 ft. A chance of showers and
tstms.

WED NIGHT
E winds around 5 kt. Waves 1 ft. A chance of showers
and tstms.

THU
SE winds around 5 kt...becoming SW in the afternoon. Waves
1 ft. A chance of showers and tstms.

THU NIGHT
SW winds 5 to 10 kt. Waves 1 ft. A chance of showers
and tstms.

FRI
NW winds 5 to 10 kt. Waves 1 ft.

SAT
NW winds 5 to 10 kt...becoming S. Waves 1 ft. 

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



ANZ536-280800-
Tidal Potomac from Indian Head to Cobb Island-
137 PM EDT Tue Jul 27 2021

THIS AFTERNOON
SE winds 5 kt. Waves less than 1 ft. Isolated
showers.

TONIGHT
S winds 5 to 10 kt...becoming W late. Waves 1 ft.

WED
NW winds 5 kt. Waves less than 1 ft. A chance of showers and
tstms.

WED NIGHT
E winds 5 kt. Waves less than 1 ft. A chance of showers
and tstms.

THU
E winds 5 kt...becoming SW in the afternoon. Waves 1 ft. A
chance of showers and tstms.

THU NIGHT
SW winds 5 kt. Waves less than 1 ft. A chance of
showers and tstms.

FRI
N winds 5 to 10 kt. Waves 1 ft.

SAT
NW winds 5 to 10 kt...becoming S. Waves 1 ft. 

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



ANZ537-280800-
Tidal Potomac from Cobb Island to Smith Point-
137 PM EDT Tue Jul 27 2021

THIS AFTERNOON
SE winds 5 kt. Waves less than 1 ft. Isolated
showers.

TONIGHT
S winds 5 to 10 kt...becoming W late. Waves 1 ft.

WED
W winds 5 to 10 kt...becoming SE in the afternoon. Waves
1 ft.

WED NIGHT
SE winds 5 to 10 kt...becoming SW after midnight. Waves
1 ft. A chance of showers and tstms.

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

THU NIGHT
SW winds 5 to 10 kt. Waves 1 ft. A chance of showers
and tstms.

FRI
N winds 5 to 10 kt. Waves 1 ft.

SAT
NW winds 5 to 10 kt...becoming S. Waves 1 ft. 

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



ANZ530-280800-
Chesapeake Bay north of Pooles Island-
137 PM EDT Tue Jul 27 2021

THIS AFTERNOON
SW winds 5 kt. Waves flat.

TONIGHT
S winds 5 to 10 kt...becoming NW late. Waves 1 ft.

WED
NE winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.

WED NIGHT
E winds 5 kt. Waves less than 1 ft. A chance of showers
and tstms.

THU
S winds 5 to 10 kt. Waves 1 ft or less. A chance of showers
and tstms.

THU NIGHT
SW winds 5 to 10 kt. Waves 1 ft. A chance of showers
and tstms.

FRI
NW winds 5 to 10 kt. Waves 1 ft.

SAT
NW winds 5 to 10 kt...becoming SW. Waves 1 ft. 

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



ANZ531-280800-
Chesapeake Bay from Pooles Island to Sandy Point-
137 PM EDT Tue Jul 27 2021

THIS AFTERNOON
S winds 5 kt. Waves less than 1 ft.

TONIGHT
S winds 5 to 10 kt...becoming W late. Waves 1 ft.

WED
NE winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.

WED NIGHT
E winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.

THU
S winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.

THU NIGHT
SW winds 5 to 10 kt. Waves 1 ft. A chance of showers
and tstms.

FRI
N winds 5 to 10 kt. Waves 1 to 2 ft.

SAT
NW winds 5 to 10 kt...becoming SW. Waves 1 ft. 

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



ANZ538-280800-
Patapsco River including Baltimore Harbor-
137 PM EDT Tue Jul 27 2021

THIS AFTERNOON
SE winds 5 kt. Waves less than 1 ft.

TONIGHT
SW winds 5 kt. Waves less than 1 ft.

WED
NE winds 5 kt. Waves less than 1 ft. A chance of showers and
tstms.

WED NIGHT
E winds 5 kt. Waves less than 1 ft. A chance of showers
and tstms.

THU
SE winds 5 to 10 kt. Waves 1 ft or less. A chance of showers
and tstms.

THU NIGHT
SW winds 5 to 10 kt. Waves 1 ft. A chance of showers
and tstms.

FRI
NW winds 5 to 10 kt. Waves 1 ft.

SAT
NW winds 5 to 10 kt...becoming SW. Waves 1 ft or less. 

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



ANZ539-280800-
Chester River to Queenstown MD-
137 PM EDT Tue Jul 27 2021

THIS AFTERNOON
W winds 5 kt. Waves flat.

TONIGHT
SW winds 5 to 10 kt. Waves 1 ft.

WED
N winds 5 kt. Waves less than 1 ft. A chance of showers and
tstms.

WED NIGHT
E winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.

THU
S winds 5 to 10 kt. Waves 1 ft or less. A chance of showers
and tstms.

THU NIGHT
SW winds 10 kt. Waves 1 ft. A chance of showers and
tstms.

FRI
N winds 5 to 10 kt. Waves 1 to 2 ft.

SAT
NW winds 5 to 10 kt...becoming S. Waves 1 ft. 

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



ANZ532-280800-
Chesapeake Bay from Sandy Point to North Beach-
137 PM EDT Tue Jul 27 2021

THIS AFTERNOON
S winds 5 to 10 kt. Waves 1 ft or less. Isolated
showers.

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

WED
N winds 5 to 10 kt...becoming NE late. Waves 1 ft. A chance
of showers and tstms.

WED NIGHT
E winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.

THU
SE winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.

THU NIGHT
SW winds 10 kt. Waves 1 ft. A chance of showers and
tstms.

FRI
N winds 5 to 10 kt. Waves 1 ft.

SAT
NW winds 5 to 10 kt...becoming S. Waves 1 ft. 

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



ANZ540-280800-
Eastern Bay-
137 PM EDT Tue Jul 27 2021

THIS AFTERNOON
SW winds 5 to 10 kt. Waves 1 ft or less.

TONIGHT
SW winds 5 to 10 kt. Waves 1 ft.

WED
N winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.

WED NIGHT
E winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.

THU
S winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.

THU NIGHT
SW winds 10 kt. Waves 1 ft. A chance of showers and
tstms.

FRI
N winds 5 to 10 kt. Waves 1 ft.

SAT
NW winds 5 to 10 kt...becoming S. Waves 1 ft. 

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



ANZ533-280800-
Chesapeake Bay from North Beach to Drum Point-
137 PM EDT Tue Jul 27 2021

THIS AFTERNOON
SE winds 5 to 10 kt. Waves 1 ft or less. Isolated
showers.

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

WED
NW winds 5 to 10 kt...becoming NE late. Waves 1 ft. A chance
of showers and tstms.

WED NIGHT
SE winds 5 to 10 kt. Waves 1 ft. A chance of showers
and tstms.

THU
SE winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.

THU NIGHT
SW winds 5 to 10 kt. Waves 1 ft. A chance of showers
and tstms.

FRI
N winds 5 to 10 kt. Waves 1 to 2 ft.

SAT
NW winds 5 to 10 kt...becoming S. Waves 1 ft. 

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



ANZ541-280800-
Choptank River to Cambridge MD and the Little Choptank River-
137 PM EDT Tue Jul 27 2021

THIS AFTERNOON
SW winds 5 kt. Waves less than 1 ft. Isolated
showers.

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

WED
W winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.

WED NIGHT
E winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.

THU
S winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.

THU NIGHT
SW winds 5 to 10 kt. Waves 1 ft. A chance of showers
and tstms.

FRI
N winds 5 to 10 kt. Waves 1 ft.

SAT
NW winds 5 to 10 kt...becoming S. Waves 1 ft. 

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



ANZ542-280800-
Patuxent River to Broomes Island MD-
137 PM EDT Tue Jul 27 2021

THIS AFTERNOON
E winds 5 kt. Waves less than 1 ft. Isolated
showers.

TONIGHT
S winds 5 kt. Waves less than 1 ft.

WED
NE winds 5 kt. Waves less than 1 ft. A chance of showers and
tstms.

WED NIGHT
SE winds 5 kt. Waves less than 1 ft. A chance of
showers and tstms.

THU
SE winds 5 to 10 kt. Waves 1 ft.

THU NIGHT
SW winds 5 to 10 kt. Waves 1 ft. A chance of showers
and tstms.

FRI
N winds 5 to 10 kt. Waves 1 ft.

SAT
NW winds 5 to 10 kt...becoming S. Waves 1 ft. 

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



ANZ534-280800-
Chesapeake Bay from Drum Point to Smith Point-
137 PM EDT Tue Jul 27 2021

THIS AFTERNOON
S winds 5 kt. Waves less than 1 ft. Isolated
showers.

TONIGHT
S winds 5 to 10 kt. Waves 2 ft.

WED
SW winds 5 to 10 kt...becoming S late. Waves 1 ft.

WED NIGHT
S winds 5 to 10 kt. Waves 1 to 2 ft. A chance of
showers and tstms.

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

THU NIGHT
SW winds 10 kt. Waves 2 ft. A chance of showers and
tstms.

FRI
N winds 5 to 10 kt. Waves 1 to 2 ft.

SAT
NW winds 5 to 10 kt...becoming S. Waves 1 to 2 ft. 

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



ANZ543-280800-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
137 PM EDT Tue Jul 27 2021

THIS AFTERNOON
SW winds 5 kt. Waves less than 1 ft. Isolated
showers.

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

WED
SW winds 5 to 10 kt. Waves 1 ft.

WED NIGHT
SE winds 5 to 10 kt. Waves 1 ft. A chance of showers
and tstms.

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

THU NIGHT
SW winds 10 kt. Waves 1 ft. A chance of showers and
tstms.

FRI
N winds 5 to 10 kt. Waves 1 ft.

SAT
NW winds 5 to 10 kt...becoming S. Waves 1 ft. 

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