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National Weather Service Marine Forecast FZUS51 KLWX

FZUS51 KLWX 080537
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
137 AM EDT Wed Apr 8 2020

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. 

ANZ500-082000-
137 AM EDT Wed Apr 8 2020

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

Showers and thunderstorms are possible early Wednesday morning, as a
 weakening squall line drops into the region form the north. Gusty
winds are possible with these storms. A weak cold front will pass
through the waters on Wednesday, followed by a stronger cold front
on Thursday, with yet another threat of strong thunderstorms. Small
Craft Advisories will likely be needed Wednesday afternoon, and
again Thursday through Saturday. A Gale Warning may be needed for
portions of the waters Thursday and Friday.



ANZ535-082000-
Tidal Potomac from Key Bridge to Indian Head-
137 AM EDT Wed Apr 8 2020

Overnight
SW winds 5 kt. Waves less than 1 ft. Showers likely
with a chance of tstms. Patchy fog.

WED
NW winds 5 to 10 kt. Gusts up to 20 kt in the late morning
and afternoon. Waves 1 ft.

WED NIGHT
N winds 5 to 10 kt...becoming SE late. Waves 1 ft.

THU
S winds 10 to 15 kt with gusts to 20 kt... becoming W 15 to
20 kt with gusts to 30 kt in the afternoon. Waves 1 to 2 ft. Showers
likely with a chance of tstms.

THU NIGHT
W winds 10 to 15 kt with gusts to 25 kt. Waves 1 ft.

FRI
W winds 10 to 15 kt with gusts to 25 kt. Waves 1 ft.

FRI NIGHT
NW winds 10 to 15 kt with gusts to 25 kt...becoming W
5 kt after midnight. Waves 1 ft.

SAT
W winds 5 to 10 kt...becoming S after midnight. Waves 1 ft.

SUN
S winds 5 to 10 kt. Waves 1 ft. Rain.

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



ANZ536-082000-
Tidal Potomac from Indian Head to Cobb Island-
137 AM EDT Wed Apr 8 2020

Overnight
SW winds 5 kt. Waves less than 1 ft. Showers likely
with a chance of tstms. Patchy fog.

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

WED NIGHT
N winds 5 to 10 kt...becoming SE late. Waves 1 ft.

THU
S winds 5 to 10 kt with gusts to 20 kt... becoming W 15 to
20 kt with gusts to 30 kt in the afternoon. Waves 1 to 2 ft. Showers
likely with a chance of tstms.

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

FRI
W winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft.

FRI NIGHT
NW winds 10 to 15 kt. Gusts up to 20 kt in the evening.
Waves 1 to 2 ft.

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

SUN
S winds 5 to 10 kt. Waves 1 ft. Rain.

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



ANZ537-082000-
Tidal Potomac from Cobb Island to Smith Point-
137 AM EDT Wed Apr 8 2020

Overnight
SW winds 5 to 10 kt. Waves 1 ft. Showers likely with a
chance of tstms. Patchy fog. Vsby 1 to 3 NM.

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

WED NIGHT
N winds 5 to 10 kt...becoming SE late. Waves 1 ft.

THU
S winds 10 to 15 kt...becoming W 15 to 20 kt with gusts to
30 kt in the afternoon. Waves 1 ft... building to 3 ft in the
afternoon. Showers likely with a chance of tstms.

THU NIGHT
NW winds 10 to 15 kt with gusts to 30 kt. Waves 3 ft.

FRI
W winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft.

FRI NIGHT
NW winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft.

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

SUN
S winds 10 to 15 kt. Waves 1 to 2 ft...building to 3 ft in
the evening, then subsiding to 1 ft after midnight. Rain.

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



ANZ530-082000-
Chesapeake Bay north of Pooles Island-
137 AM EDT Wed Apr 8 2020

Overnight
W winds 5 kt. Waves less than 1 ft. Showers likely with
a chance of tstms. Patchy fog.

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

WED NIGHT
N winds 5 to 10 kt...becoming SE late. Waves 1 ft or
less.

THU
S winds 10 to 15 kt with gusts to 20 kt... becoming W 15 to
20 kt with gusts to 30 kt in the afternoon. Waves 1 to 2 ft. Showers
likely.

THU NIGHT
W winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.

FRI
W winds 15 to 20 kt with gusts to 30 kt. Waves 2 to 3 ft.

FRI NIGHT
NW winds 15 to 20 kt...diminishing to 10 kt after
midnight. Gusts up to 25 kt. Waves 1 to 2 ft.

SAT
W winds 5 to 10 kt...becoming S after midnight. Waves 1 ft.

SUN
SE winds 10 to 15 kt. Waves 1 ft. A chance of rain through
the day, then rain through the night. 

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



ANZ531-082000-
Chesapeake Bay from Pooles Island to Sandy Point-
137 AM EDT Wed Apr 8 2020

Overnight
SW winds 5 kt. Waves less than 1 ft. Showers likely
with a chance of tstms. Patchy fog.

WED
NW winds 5 to 10 kt. Waves 1 to 2 ft.

WED NIGHT
N winds 5 to 10 kt...becoming SE late. Waves 1 ft.

THU
S winds 10 to 15 kt...becoming W 15 to 20 kt with gusts to
30 kt in the afternoon. Waves 2 to 3 ft. Showers likely.

THU NIGHT
W winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft.

FRI
W winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft.

FRI NIGHT
NW winds 15 to 20 kt with gusts to 30 kt. Waves 2 to
3 ft.

SAT
W winds 5 to 10 kt...becoming S after midnight. Waves 1 to
2 ft.

SUN
S winds 10 to 15 kt. Waves 1 to 2 ft. Rain.

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



ANZ538-082000-
Patapsco River including Baltimore Harbor-
137 AM EDT Wed Apr 8 2020

Overnight
W winds 5 kt. Waves flat. Showers likely with a chance
of tstms. Patchy fog.

WED
NW winds 5 to 10 kt. Gusts up to 20 kt in the late morning
and afternoon. Waves 1 ft.

WED NIGHT
N winds 5 to 10 kt...becoming E late. Waves 1 ft or
less.

THU
S winds 5 to 10 kt with gusts to 20 kt... becoming W 15 to
20 kt with gusts to 30 kt in the afternoon. Waves 1 to 2 ft. Showers
likely.

THU NIGHT
W winds 15 to 20 kt with gusts to 30 kt. Waves 2 ft.

FRI
W winds 15 to 20 kt with gusts to 30 kt. Waves 2 ft.

FRI NIGHT
NW winds 15 to 20 kt with gusts to 30 kt...diminishing
to 10 kt with gusts to 20 kt after midnight. Waves 1 to 2 ft.

SAT
W winds 5 to 10 kt...becoming S after midnight. Waves 1 ft.

SUN
SE winds 5 to 10 kt. Waves 1 ft. Rain.

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



ANZ539-082000-
Chester River to Queenstown MD-
137 AM EDT Wed Apr 8 2020

Overnight
SW winds 5 kt. Waves less than 1 ft. Showers likely
with a chance of tstms. Patchy fog.

WED
NW winds 5 to 10 kt. Waves 1 to 2 ft.

WED NIGHT
N winds 5 to 10 kt...becoming SE late. Waves 1 ft.

THU
S winds 10 to 15 kt with gusts to 20 kt... becoming W 15 to
20 kt with gusts to 30 kt in the afternoon. Waves 1 ft...building to
3 ft in the afternoon. Showers likely.

THU NIGHT
W winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft.

FRI
W winds 15 to 20 kt with gusts to 35 kt. Waves 3 ft.

FRI NIGHT
NW winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft.

SAT
W winds 5 to 10 kt...becoming S after midnight. Waves 1 to
2 ft.

SUN
S winds 10 to 15 kt. Waves 1 ft. Rain.

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



ANZ532-082000-
Chesapeake Bay from Sandy Point to North Beach-
137 AM EDT Wed Apr 8 2020

Overnight
SW winds 5 kt. Waves less than 1 ft. Showers likely
with a chance of tstms. Patchy fog.

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

WED NIGHT
N winds 5 to 10 kt...becoming SE late. Waves 1 ft.

THU
S winds 10 to 15 kt...becoming W 15 to 20 kt with gusts to
30 kt in the afternoon. Waves 1 ft... building to 3 ft in the
afternoon. Showers likely.

THU NIGHT
W winds 15 to 20 kt with gusts to 25 kt. Waves 2 to
3 ft.

FRI
W winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft.

FRI NIGHT
NW winds 15 to 20 kt with gusts to 30 kt. Waves 2 to
3 ft.

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

SUN
S winds 10 to 15 kt. Waves 1 to 2 ft. Rain.

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



ANZ540-082000-
Eastern Bay-
137 AM EDT Wed Apr 8 2020

Overnight
SW winds 5 to 10 kt. Waves 1 ft. Showers likely with a
chance of tstms. Patchy fog.

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

WED NIGHT
N winds 5 to 10 kt...becoming SE late. Waves 1 ft.

THU
S winds 10 to 15 kt...becoming W 15 to 20 kt with gusts to
30 kt in the afternoon. Waves 1 ft... building to 3 ft in the
afternoon. Showers likely.

THU NIGHT
W winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft.

FRI
W winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft.

FRI NIGHT
NW winds 15 to 20 kt with gusts to 30 kt. Waves 2 to
3 ft.

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

SUN
S winds 10 to 15 kt. Waves 1 to 2 ft. Rain.

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



ANZ533-082000-
Chesapeake Bay from North Beach to Drum Point-
137 AM EDT Wed Apr 8 2020

Overnight
SW winds 5 to 10 kt. Waves 1 ft. Showers likely with a
chance of tstms. Patchy fog.

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

WED NIGHT
N winds 5 to 10 kt...becoming SE late. Waves 1 ft.

THU
S winds 10 to 15 kt...becoming W 15 to 20 kt with gusts to
30 kt in the afternoon. Waves 1 ft... building to 3 ft in the
afternoon. Showers likely with a chance of tstms.

THU NIGHT
W winds 15 to 20 kt with gusts to 25 kt. Waves 2 to
3 ft.

FRI
W winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft.

FRI NIGHT
NW winds 15 to 20 kt. Gusts up to 30 kt...diminishing
to 20 kt after midnight. Waves 2 to 3 ft.

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

SUN
S winds 10 to 15 kt. Waves 2 to 3 ft. Rain.

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



ANZ541-082000-
Choptank River to Cambridge MD and the Little Choptank River-
137 AM EDT Wed Apr 8 2020

Overnight
SW winds 5 kt. Waves less than 1 ft. Showers likely
with a chance of tstms. Patchy fog. Vsby 1 to 3 NM.

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

WED NIGHT
N winds 5 to 10 kt...becoming SE late. Waves 1 ft.

THU
S winds 10 to 15 kt with gusts to 20 kt... becoming W 15 to
20 kt with gusts to 30 kt in the afternoon. Waves 1 ft...building to
3 ft in the afternoon. Showers likely with a chance of tstms.

THU NIGHT
W winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft.

FRI
W winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft.

FRI NIGHT
NW winds 15 to 20 kt with gusts to 30 kt. Waves 2 to
3 ft.

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

SUN
S winds 10 to 15 kt. Waves 1 ft. Rain.

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



ANZ542-082000-
Patuxent River to Broomes Island MD-
137 AM EDT Wed Apr 8 2020

Overnight
SW winds 5 to 10 kt. Waves 1 ft. Showers likely with a
chance of tstms. Patchy fog.

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

WED NIGHT
N winds 5 to 10 kt...becoming SE late. Waves 1 ft.

THU
S winds 5 to 10 kt...becoming W 15 to 20 kt with gusts to
30 kt in the afternoon. Waves 1 to 2 ft. Showers likely with a
chance of tstms.

THU NIGHT
W winds 10 to 15 kt with gusts to 25 kt. Waves 1 ft.

FRI
W winds 15 to 20 kt with gusts to 30 kt. Waves 1 to 2 ft.

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

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

SUN
S winds 10 to 15 kt. Waves 1 ft. Rain.

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



ANZ534-082000-
Chesapeake Bay from Drum Point to Smith Point-
137 AM EDT Wed Apr 8 2020

Overnight
SW winds 10 kt. Waves 1 ft. Showers likely with a
chance of tstms. Patchy fog. Vsby 1 to 3 NM.

WED
W winds 10 kt. Waves 2 ft. A chance of showers and tstms.

WED NIGHT
NE winds 5 to 10 kt...becoming SE late. Waves 1 ft.

THU
S winds 10 to 15 kt...becoming W 15 to 20 kt with gusts to
30 kt in the afternoon. Waves 2 ft... building to 4 ft in the
afternoon. Showers likely with a chance of tstms.

THU NIGHT
NW winds 15 to 20 kt with gusts to 30 kt. Waves 4 ft.

FRI
W winds 20 to 25 kt with gusts to 30 kt. Waves 4 ft.

FRI NIGHT
NW winds 15 to 20 kt with gusts to 30 kt. Waves 4 ft.

SAT
W winds 10 to 15 kt...becoming S 5 to 10 kt. Waves 2 to
3 ft...subsiding to 1 to 2 ft.

SUN
S winds 15 to 20 kt. Waves 3 ft. Rain.

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



ANZ543-082000-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
137 AM EDT Wed Apr 8 2020

Overnight
SW winds 10 kt. Waves 1 ft. Showers likely with a
chance of tstms. Patchy fog. Vsby 1 to 3 NM.

WED
W winds 10 kt with gusts to 20 kt. Waves 1 ft. A chance of
showers and tstms.

WED NIGHT
E winds 5 to 10 kt. Waves 1 ft.

THU
S winds 10 to 15 kt with gusts to 20 kt... becoming W 15 to
20 kt with gusts to 30 kt in the afternoon. Waves 1 to 2 ft. Showers
likely with a chance of tstms.

THU NIGHT
NW winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft.

FRI
W winds 20 to 25 kt with gusts to 30 kt. Waves 3 ft.

FRI NIGHT
NW winds 20 to 25 kt with gusts to 30 kt. Waves 3 ft.

SAT
W winds 10 to 15 kt...becoming S 5 to 10 kt. Waves 1 to 2 ft.

SUN
S winds 15 to 20 kt. Waves 3 ft. A chance of rain through the
day, then rain through the night. 

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