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Hurricane Symbol Storm Special! View the latest observations near Atlantic Tropical Depression Five.

National Weather Service Marine Forecast FZUS51 KLWX

FZUS51 KLWX 042337
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
737 PM EDT Sat Jul 4 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. 

ANZ500-050800-
737 PM EDT Sat Jul 4 2020

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

A weak backdoor boundary will stall southwest of the waters  today
and it will weaken tonight into Sunday. High pressure over the
Atlantic will control the weather pattern for the early and middle
portion of next week. Low pressure will pass by to the south during
this time.



ANZ535-050800-
Tidal Potomac from Key Bridge to Indian Head-
737 PM EDT Sat Jul 4 2020

TONIGHT
S winds 5 kt. Waves less than 1 ft. Isolated showers and
tstms this evening, then isolated showers after midnight.

SUN
S winds 5 kt. Waves less than 1 ft. A chance of showers and
tstms.

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

MON
S winds around 5 kt. Waves 1 ft. A chance of showers and
tstms.

MON NIGHT
S winds around 5 kt. Waves 1 ft. A chance of showers
and tstms.

TUE
S winds around 5 kt. Waves 1 ft. A chance of showers.

TUE NIGHT
S winds around 5 kt. Waves 1 ft.

WED
S winds around 5 kt. Waves 1 ft.

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

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



ANZ536-050800-
Tidal Potomac from Indian Head to Cobb Island-
737 PM EDT Sat Jul 4 2020

TONIGHT
S winds 5 kt. Waves less than 1 ft. Scattered showers and
tstms this evening, then isolated showers after midnight.

SUN
S winds around 5 kt. Waves 1 ft. A chance of showers and
tstms. Patchy fog. Vsby 1 to 3 NM.

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

MON
S winds 5 kt. Waves less than 1 ft. A chance of showers and
tstms.

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

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

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

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

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

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



ANZ537-050800-
Tidal Potomac from Cobb Island to Smith Point-
737 PM EDT Sat Jul 4 2020

TONIGHT
S winds 5 to 10 kt. Waves 1 ft. Isolated showers and
tstms this evening.

SUN
SE winds 5 to 10 kt. Waves 1 ft or less.

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

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

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

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

TUE NIGHT
S winds 10 to 15 kt. Waves 1 to 2 ft.

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

THU
SE winds 5 to 10 kt. Waves 1 to 2 ft. A chance of showers and
tstms. 

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



ANZ530-050800-
Chesapeake Bay north of Pooles Island-
737 PM EDT Sat Jul 4 2020

TONIGHT
S winds 5 kt. Waves less than 1 ft. Isolated showers and
tstms this evening.

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

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

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

MON NIGHT
S winds 5 to 10 kt. Waves 1 ft.

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

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

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

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

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



ANZ531-050800-
Chesapeake Bay from Pooles Island to Sandy Point-
737 PM EDT Sat Jul 4 2020

TONIGHT
SW winds 5 to 10 kt. Waves 1 ft or less. Isolated showers
and tstms this evening.

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

SUN NIGHT
SW winds 5 to 10 kt. Waves 1 ft.

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

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

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

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

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

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

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



ANZ538-050800-
Patapsco River including Baltimore Harbor-
737 PM EDT Sat Jul 4 2020

TONIGHT
S winds 5 kt. Waves less than 1 ft. Isolated showers and
tstms this evening.

SUN
S winds around 5 kt. Waves flat. A chance of showers and
tstms.

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

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

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

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

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

WED
S winds 5 to 10 kt. Waves 1 ft or less.

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

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



ANZ539-050800-
Chester River to Queenstown MD-
737 PM EDT Sat Jul 4 2020

TONIGHT
SW winds 5 to 10 kt. Waves 1 ft or less. Isolated showers
and tstms this evening.

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

SUN NIGHT
SW winds 5 to 10 kt. Waves 1 ft.

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

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

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

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

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

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

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



ANZ532-050800-
Chesapeake Bay from Sandy Point to North Beach-
737 PM EDT Sat Jul 4 2020

TONIGHT
SW winds 5 to 10 kt. Waves 1 ft or less. Isolated showers
and tstms this evening.

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

SUN NIGHT
SW winds 5 to 10 kt. Waves 1 ft.

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

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

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

TUE NIGHT
S winds 5 to 10 kt. Waves 1 to 2 ft.

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

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

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



ANZ540-050800-
Eastern Bay-
737 PM EDT Sat Jul 4 2020

TONIGHT
SW winds 5 to 10 kt. Waves 1 ft or less. Isolated showers
and tstms this evening.

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

SUN NIGHT
SW winds 5 to 10 kt. Waves 1 ft.

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

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

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

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

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

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

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



ANZ533-050800-
Chesapeake Bay from North Beach to Drum Point-
737 PM EDT Sat Jul 4 2020

TONIGHT
SW winds 5 to 10 kt. Waves 1 ft. Isolated showers and
tstms this evening.

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

SUN NIGHT
SW winds 5 to 10 kt. Waves 1 ft.

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

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

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

TUE NIGHT
S winds 5 to 10 kt. Waves 1 to 2 ft.

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

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

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



ANZ541-050800-
Choptank River to Cambridge MD and the Little Choptank River-
737 PM EDT Sat Jul 4 2020

TONIGHT
S winds 5 to 10 kt. Waves 1 ft or less. Isolated showers
and tstms this evening.

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

SUN NIGHT
SW winds 5 to 10 kt. Waves 1 ft.

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

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

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

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

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

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

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



ANZ542-050800-
Patuxent River to Broomes Island MD-
737 PM EDT Sat Jul 4 2020

TONIGHT
SW winds 5 to 10 kt. Waves 1 ft. Isolated showers and
tstms this evening.

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

SUN NIGHT
SW winds 5 to 10 kt. Waves 1 ft.

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

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

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

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

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

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

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



ANZ534-050800-
Chesapeake Bay from Drum Point to Smith Point-
737 PM EDT Sat Jul 4 2020

TONIGHT
S winds 5 to 10 kt. Waves 1 ft. Isolated showers and
tstms this evening.

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

SUN NIGHT
S winds 10 kt. Waves 2 ft.

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

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

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

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

WED
S winds 10 to 15 kt. Waves 1 to 2 ft.

THU
SE winds 10 to 15 kt. Waves 1 to 2 ft. A chance of showers
and tstms. 

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



ANZ543-050800-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
737 PM EDT Sat Jul 4 2020

TONIGHT
S winds 5 to 10 kt. Waves 1 ft or less. Isolated showers
and tstms this evening.

SUN
S winds 5 to 10 kt. Waves 1 ft or less.

SUN NIGHT
SW winds 5 to 10 kt. Waves 1 ft.

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

MON NIGHT
S winds 5 to 10 kt. Waves 1 ft.

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

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

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

THU
SE winds 10 to 15 kt. Waves 1 ft. A chance of showers and
tstms. 

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