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National Weather Service Marine Forecast FZUS51 KLWX

FZUS51 KLWX 242351
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
751 PM EDT Tue Apr 24 2018

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. 

ANZ500-250800-
751 PM EDT Tue Apr 24 2018

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

Low pressure will move northward from the Carolinas tonight before
passing overhead Wednesday. High pressure will then move near the
area Thursday. Another low pressure system may affect the waters by
overnight Thursday into Friday. A cold front will pass through the
waters Saturday and high pressure will return for Sunday. Small
Craft Advisories may be needed Thursday.



ANZ535-250800-
Tidal Potomac from Key Bridge to Indian Head-
751 PM EDT Tue Apr 24 2018

TONIGHT
NE winds 10 kt with gusts to 20 kt. Waves 1 ft. Rain.
Patchy fog. Vsby 1 to 3 NM.

WED
NW winds 5 to 10 kt. Waves 1 ft. A chance of showers. Patchy
fog. Vsby 1 to 3 NM.

WED NIGHT
NW winds 10 kt. Waves 1 ft.

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

THU NIGHT
S winds 5 kt. Waves less than 1 ft. Showers likely.

FRI
SE winds 5 kt. Waves less than 1 ft. Showers likely.

FRI NIGHT
SW winds around 5 kt. Waves 1 ft. A chance of showers.

SAT
NW winds around 5 kt. Waves 1 ft. A chance of showers in the
morning.

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



ANZ536-250800-
Tidal Potomac from Indian Head to Cobb Island-
751 PM EDT Tue Apr 24 2018

SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EDT TONIGHT


TONIGHT
E winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
Rain. Patchy fog this evening. Patchy fog after midnight. Vsby 1 to
3 NM.

WED
NW winds 5 to 10 kt. Waves 1 ft. A chance of showers. Patchy
fog. Vsby 1 to 3 NM.

WED NIGHT
NW winds 10 kt. Waves 1 ft.

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

THU NIGHT
S winds 5 kt. Waves less than 1 ft. Showers likely.

FRI
S winds around 5 kt. Waves 1 ft. Showers likely.

FRI NIGHT
SW winds around 5 kt. Waves 1 ft. A chance of showers.

SAT
NW winds around 5 kt. Waves 1 ft. A chance of showers in the
morning.

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



ANZ537-250800-
Tidal Potomac from Cobb Island to Smith Point-
751 PM EDT Tue Apr 24 2018

SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT WEDNESDAY


TONIGHT
E winds 15 to 20 kt with gusts to 25 kt. Waves 4 ft...
subsiding to 2 ft late. Rain. Patchy fog. Vsby 1 to 3 NM.

WED
SE winds 5 to 10 kt...becoming NW in the afternoon. Waves
1 ft. A chance of showers. Patchy fog. Vsby 1 to 3 NM.

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

THU
W winds 10 to 15 kt. Waves 2 ft.

THU NIGHT
SE winds 5 to 10 kt. Waves 1 ft. Showers likely.

FRI
SE winds 5 to 10 kt. Waves 1 ft. Showers likely.

FRI NIGHT
SW winds 5 to 10 kt. Waves 1 ft or less. A chance of
showers.

SAT
NW winds 5 to 10 kt. Waves 1 ft. A chance of showers in the
morning.

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



ANZ530-250800-
Chesapeake Bay north of Pooles Island-
751 PM EDT Tue Apr 24 2018

SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT WEDNESDAY


TONIGHT
E winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
Rain. Patchy fog this evening. Patchy fog after midnight with vsby
1 to 3 NM.

WED
NW winds 5 to 10 kt. Waves 1 ft or less. Showers likely.
Patchy fog. Vsby 1 to 3 NM.

WED NIGHT
NW winds 10 kt. Waves 1 ft. A chance of showers.

THU
NW winds 10 kt. Waves 1 ft.

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

FRI
SE winds 5 to 10 kt. Waves 1 ft or less. Showers likely.

FRI NIGHT
SW winds 5 to 10 kt. Waves 1 ft or less. A chance of
showers.

SAT
NW winds 5 to 10 kt. Waves 1 ft. A chance of showers.

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



ANZ531-250800-
Chesapeake Bay from Pooles Island to Sandy Point-
751 PM EDT Tue Apr 24 2018

SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT WEDNESDAY


TONIGHT
E winds 15 kt with gusts to 20 kt. Waves 2 ft. Rain.
Patchy fog this evening. Patchy fog after midnight with vsby 1 to
3 NM.

WED
NE winds 5 to 10 kt...becoming NW in the afternoon. Waves
1 ft. A chance of showers. Patchy fog. Vsby 1 to 3 NM.

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

THU
W winds 10 to 15 kt. Waves 2 ft.

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

FRI
SE winds 5 to 10 kt. Waves 1 ft. Showers likely.

FRI NIGHT
SW winds 5 to 10 kt. Waves 1 ft. A chance of showers.

SAT
NW winds 5 to 10 kt. Waves 1 ft. A chance of showers.

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



ANZ538-250800-
Patapsco River including Baltimore Harbor-
751 PM EDT Tue Apr 24 2018

SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT WEDNESDAY


TONIGHT
E winds 15 kt with gusts to 20 kt. Waves 1 to 2 ft. Rain.
Patchy fog this evening. Patchy fog after midnight with vsby 1 to
3 NM.

WED
NW winds 5 to 10 kt. Waves 1 ft or less. A chance of showers.
Patchy fog. Vsby 1 to 3 NM.

WED NIGHT
NW winds 10 kt. Waves 1 ft.

THU
NW winds 10 kt. Waves 1 ft.

THU NIGHT
S winds 5 kt. Waves less than 1 ft. A chance of
showers.

FRI
SE winds 5 kt. Waves less than 1 ft. Showers likely.

FRI NIGHT
SW winds around 5 kt. Waves 1 ft or less. A chance of
showers.

SAT
NW winds 5 to 10 kt. Waves 1 ft or less. A chance of showers.

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



ANZ539-250800-
Chester River to Queenstown MD-
751 PM EDT Tue Apr 24 2018

SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT WEDNESDAY


TONIGHT
E winds 15 kt with gusts to 20 kt. Waves 1 to 2 ft. Rain.
Patchy fog this evening. Patchy fog after midnight with vsby 1 to
3 NM.

WED
E winds 5 to 10 kt...becoming NW in the afternoon. Waves 1 ft
or less. A chance of showers. Patchy fog. Vsby 1 to 3 NM.

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

THU
W winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.

THU NIGHT
S winds 5 kt. Waves less than 1 ft. A chance of
showers.

FRI
SE winds 5 to 10 kt. Waves 1 ft or less. Showers likely.

FRI NIGHT
SW winds 5 to 10 kt. Waves 1 ft. A chance of showers.

SAT
NW winds 5 to 10 kt. Waves 1 ft. A chance of showers in the
morning.

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



ANZ532-250800-
Chesapeake Bay from Sandy Point to North Beach-
751 PM EDT Tue Apr 24 2018

SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT WEDNESDAY


TONIGHT
E winds 15 kt with gusts to 20 kt. Waves 2 to 3 ft. Rain.
Patchy fog. Vsby 1 to 3 NM.

WED
NE winds 5 to 10 kt...becoming NW in the afternoon. Waves
1 ft. A chance of showers. Patchy fog. Vsby 1 to 3 NM.

WED NIGHT
NW winds 10 to 15 kt. Waves 1 to 2 ft.

THU
W winds 10 to 15 kt. Waves 1 to 2 ft.

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

FRI
SE winds 5 to 10 kt. Waves 1 ft. Showers likely.

FRI NIGHT
SW winds 5 to 10 kt. Waves 1 ft. A chance of showers.

SAT
NW winds 5 to 10 kt. Waves 1 ft. A chance of showers in the
morning.

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



ANZ540-250800-
Eastern Bay-
751 PM EDT Tue Apr 24 2018

SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT WEDNESDAY


TONIGHT
E winds 15 kt with gusts to 20 kt. Waves 2 ft. Rain.
Patchy fog this evening. Patchy fog after midnight with vsby 1 to
3 NM.

WED
E winds 5 to 10 kt...becoming W in the afternoon. Waves 1 ft
or less. A chance of showers. Patchy fog. Vsby 1 to 3 NM.

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

THU
W winds 10 to 15 kt. Waves 1 ft.

THU NIGHT
S winds 5 kt. Waves less than 1 ft. A chance of
showers.

FRI
SE winds 5 to 10 kt. Waves 1 ft. Showers likely.

FRI NIGHT
SW winds 5 to 10 kt. Waves 1 ft or less. A chance of
showers.

SAT
NW winds 5 to 10 kt. Waves 1 ft. A chance of showers in the
morning.

SUN
NW winds 10 kt. Waves 1 ft. 



ANZ533-250800-
Chesapeake Bay from North Beach to Drum Point-
751 PM EDT Tue Apr 24 2018

SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT WEDNESDAY


TONIGHT
E winds 15 kt with gusts to 20 kt. Waves 2 to 3 ft. Rain.
Patchy fog this evening. Patchy fog after midnight. Vsby 1 to 3 NM.

WED
SE winds 5 to 10 kt...becoming NW in the afternoon. Waves
1 ft. A chance of showers. Patchy fog. Vsby 1 to 3 NM.

WED NIGHT
NW winds 10 to 15 kt. Waves 1 to 2 ft.

THU
W winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.

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

FRI
SE winds 5 to 10 kt. Waves 1 ft. Showers likely.

FRI NIGHT
SW winds 5 to 10 kt. Waves 1 ft. A chance of showers.

SAT
NW winds 5 to 10 kt. Waves 1 ft. A chance of showers in the
morning.

SUN
NW winds 10 kt. Waves 1 to 2 ft. 



ANZ541-250800-
Choptank River to Cambridge MD and the Little Choptank River-
751 PM EDT Tue Apr 24 2018

SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT WEDNESDAY


TONIGHT
E winds 15 kt with gusts to 20 kt. Waves 2 ft. Rain.
Patchy fog this evening. Patchy fog after midnight. Vsby 1 to 3 NM.

WED
SE winds 5 to 10 kt...becoming W in the afternoon. Waves
1 ft. A chance of showers. Patchy fog. Vsby 1 to 3 NM.

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

THU
W winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.

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

FRI
SE winds 5 to 10 kt. Waves 1 ft. Showers likely.

FRI NIGHT
SW winds 5 to 10 kt. Waves 1 ft or less. A chance of
showers.

SAT
NW winds 5 to 10 kt. Waves 1 ft. A chance of showers in the
morning.

SUN
NW winds 10 kt. Waves 1 to 2 ft. 



ANZ542-250800-
Patuxent River to Broomes Island MD-
751 PM EDT Tue Apr 24 2018

SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT WEDNESDAY


TONIGHT
E winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
Rain. Patchy fog. Vsby 1 to 3 NM.

WED
SE winds 5 to 10 kt...becoming NW in the afternoon. Waves
1 ft. A chance of showers. Patchy fog. Vsby 1 to 3 NM.

WED NIGHT
NW winds 10 to 15 kt. Waves 1 ft.

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

THU NIGHT
S winds 5 to 10 kt. Waves 1 ft. Showers likely.

FRI
SE winds 5 to 10 kt. Waves 1 ft. Showers likely.

FRI NIGHT
SW winds around 5 kt. Waves 1 ft. A chance of showers.

SAT
NW winds 5 to 10 kt. Waves 1 ft. A chance of showers in the
morning.

SUN
NW winds 10 kt. Waves 1 ft. 



ANZ534-250800-
Chesapeake Bay from Drum Point to Smith Point-
751 PM EDT Tue Apr 24 2018

SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT WEDNESDAY


TONIGHT
E winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft.
Rain. Patchy fog. Vsby 1 to 3 NM.

WED
W winds 5 to 10 kt. Waves 1 to 2 ft. Showers likely. Patchy
fog. Vsby 1 to 3 NM.

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

THU
NW winds 10 to 15 kt...becoming W 5 to 10 kt in the
afternoon. Gusts up to 20 kt. Waves 2 ft.

THU NIGHT
S winds 5 to 10 kt. Waves 1 ft. Showers likely.

FRI
SE winds 5 to 10 kt. Waves 1 ft. Showers likely.

FRI NIGHT
SW winds 5 to 10 kt. Waves 1 ft. A chance of showers.

SAT
NW winds 10 to 15 kt. Waves 1 to 2 ft... building to 3 ft
after midnight. A chance of showers in the morning.

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



ANZ543-250800-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
751 PM EDT Tue Apr 24 2018

SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT WEDNESDAY


TONIGHT
E winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
Rain. Patchy fog. Vsby 1 to 3 NM.

WED
SW winds 5 to 10 kt. Waves 1 ft. A chance of showers. Patchy
fog. Vsby 1 to 3 NM.

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

THU
W winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.

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

FRI
SE winds 5 to 10 kt. Waves 1 ft. Showers likely.

FRI NIGHT
SW winds 5 to 10 kt. Waves 1 ft or less. A chance of
showers.

SAT
NW winds 10 to 15 kt. Waves 1 to 2 ft. A chance of showers in
the morning.

SUN
NW winds 10 to 15 kt. Waves 1 to 2 ft.