National Weather Service Marine Forecast FZUS51 KLWX

FZUS51 KLWX 110534
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
134 AM EDT Fri Jul 11 2025

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. Waves flat where waters are iced over.

ANZ500-112000
134 AM EDT Fri Jul 11 2025

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

A weak front will remain stalled just north of the waters through today before dissipating. A second front may settle southward into the area over the weekend. A stronger cold front approaches from the west early next week.

ANZ535-112000
Tidal Potomac from Key Bridge to Indian Head
134 AM EDT Fri Jul 11 2025

OVERNIGHT
Light winds. Waves flat. Patchy fog. Vsby 1 to 3 NM.

FRI
SE winds around 5 kt. Waves 1 ft or less. Patchy fog. Vsby 1 to 3 NM.

FRI NIGHT
SE winds around 5 kt. Waves 1 ft or less.

SAT
SE winds around 5 kt. Waves 1 ft or less. A chance of showers and tstms.

SAT NIGHT
SE winds around 5 kt. Waves 1 ft.

SUN
SE winds around 5 kt. Waves 1 ft. Showers likely with a chance of tstms.

SUN NIGHT
S winds around 5 kt. Waves 1 ft. Showers likely with a chance of tstms.

MON
W winds around 5 kt. Waves 1 ft or less. A chance of tstms.

TUE
E winds around 5 kt. Waves 1 ft or less. A chance of showers and tstms through the night.

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

ANZ536-112000
Tidal Potomac from Indian Head to Cobb Island
134 AM EDT Fri Jul 11 2025

OVERNIGHT
Light winds. Waves flat. Patchy fog. Vsby 1 to 3 NM.

FRI
Light winds. Waves 1 ft or less. Patchy fog. Vsby 1 to 3 NM.

FRI NIGHT
S winds around 5 kt. Waves 1 ft or less.

SAT
SE winds around 5 kt. Waves 1 ft or less.

SAT NIGHT
SE winds around 5 kt. Waves 1 ft.

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

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

MON
S winds around 5 kt. Waves 1 ft or less. A chance of showers and tstms in the morning, then showers and tstms likely through the night. A chance of showers and tstms after midnight.

TUE
SE winds around 5 kt. Waves 1 ft. A chance of showers and tstms through the night.

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

ANZ537-112000
Tidal Potomac from Cobb Island to Smith Point
134 AM EDT Fri Jul 11 2025

OVERNIGHT
SW winds 5 kt. Waves flat. A slight chance of showers and tstms. Patchy fog. Vsby 1 to 3 NM.

FRI
E winds around 5 kt. Waves flat. Patchy fog. Vsby 1 to 3 NM.

FRI NIGHT
S winds around 5 kt. Waves flat.

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

SAT NIGHT
SE winds 5 to 10 kt. Waves 1 ft.

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

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

MON
S winds around 5 kt. Waves 1 ft or less. A chance of showers and tstms in the morning, then showers and tstms likely through the night. A chance of showers and tstms after midnight.

TUE
SE winds around 5 kt. Waves 1 ft or less. A chance of showers. A chance of tstms through the night.

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

ANZ530-112000
Chesapeake Bay north of Pooles Island
134 AM EDT Fri Jul 11 2025

OVERNIGHT
Light winds. Waves flat. Patchy fog. Vsby 1 to 3 NM.

FRI
Light winds. Waves flat. Patchy fog. Vsby 1 to 3 NM.

FRI NIGHT
SE winds around 5 kt. Waves flat.

SAT
SE winds around 5 kt. Waves flat. A chance of showers and tstms.

SAT NIGHT
SE winds 5 kt. Waves flat.

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

SUN NIGHT
SE winds around 5 kt. Waves flat. Showers likely with a chance of tstms.

MON
S winds around 5 kt. Waves flat. A chance of tstms. Showers likely .

TUE
SE winds around 5 kt. Waves flat. A chance of showers. A chance of tstms through the night.

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

ANZ531-112000
Chesapeake Bay from Pooles Island to Sandy Point
134 AM EDT Fri Jul 11 2025

OVERNIGHT
Light winds. Waves flat. Patchy fog. Vsby 1 to 3 NM.

FRI
E winds around 5 kt. Waves flat. Patchy fog. Vsby 1 to 3 NM.

FRI NIGHT
S winds around 5 kt. Waves flat.

SAT
SE winds around 5 kt. Waves 1 ft or less. A chance of showers and tstms.

SAT NIGHT
SE winds 5 to 10 kt. Waves 1 ft.

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

SUN NIGHT
S winds 5 to 10 kt. Waves 1 ft. Showers likely with a chance of tstms.

MON
S winds around 5 kt. Waves flat. A chance of tstms. Showers likely .

TUE
SE winds around 5 kt. Waves flat. A chance of showers. A chance of tstms through the night.

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

ANZ538-112000
Patapsco River including Baltimore Harbor
134 AM EDT Fri Jul 11 2025

OVERNIGHT
Light winds. Waves flat. Patchy fog. Vsby 1 to 3 NM.

FRI
E winds around 5 kt. Waves flat. Patchy fog. Vsby 1 to 3 NM.

FRI NIGHT
S winds around 5 kt. Waves flat.

SAT
SE winds around 5 kt. Waves flat. A chance of showers and tstms.

SAT NIGHT
SE winds 5 kt. Waves less than 1 ft.

SUN
SE winds 5 kt. Waves less than 1 ft. Showers likely with a chance of tstms.

SUN NIGHT
S winds around 5 kt. Waves 1 ft or less. Showers likely with a chance of tstms.

MON
S winds around 5 kt. Waves flat. A chance of tstms. Showers likely .

TUE
SE winds around 5 kt. Waves flat. A chance of showers and tstms through the night.

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

ANZ539-112000
Chester River to Queenstown MD
134 AM EDT Fri Jul 11 2025

OVERNIGHT
Light winds. Waves flat. Patchy fog. Vsby 1 to 3 NM.

FRI
Light winds. Waves flat. Patchy fog. Vsby 1 to 3 NM.

FRI NIGHT
SE winds around 5 kt. Waves flat.

SAT
SE winds around 5 kt. Waves flat. A chance of showers and tstms.

SAT NIGHT
SE winds 5 kt. Waves less than 1 ft.

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

SUN NIGHT
S winds around 5 kt. Waves 1 ft. Showers likely with a chance of tstms.

MON
S winds around 5 kt. Waves flat. A chance of tstms. Showers likely .

TUE
SE winds around 5 kt. Waves flat. A chance of showers. A chance of tstms through the night.

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

ANZ532-112000
Chesapeake Bay from Sandy Point to North Beach
134 AM EDT Fri Jul 11 2025

OVERNIGHT
SW winds 5 kt. Waves flat. Patchy fog. Vsby 1 to 3 NM.

FRI
E winds around 5 kt. Waves flat. Patchy fog. Vsby 1 to 3 NM.

FRI NIGHT
S winds around 5 kt. Waves flat.

SAT
SE winds around 5 kt. Waves 1 ft or less. A chance of showers and tstms.

SAT NIGHT
SE winds 5 to 10 kt. Waves 1 ft.

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

SUN NIGHT
S winds 5 to 10 kt. Waves 1 ft. Showers likely with a chance of tstms.

MON
S winds around 5 kt. Waves flat. A chance of tstms. Showers likely .

TUE
SE winds 5 kt. Waves less than 1 ft. A chance of showers. A chance of tstms through the night.

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

ANZ540-112000
Eastern Bay
134 AM EDT Fri Jul 11 2025

OVERNIGHT
Light winds. Waves flat. Patchy fog. Vsby 1 to 3 NM.

FRI
Light winds. Waves flat. Patchy fog. Vsby 1 to 3 NM.

FRI NIGHT
S winds around 5 kt. Waves flat.

SAT
SE winds around 5 kt. Waves flat.

SAT NIGHT
SE winds 5 kt. Waves less than 1 ft.

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

SUN NIGHT
S winds 5 kt. Waves less than 1 ft. Showers likely with a chance of tstms.

MON
S winds around 5 kt. Waves flat. A chance of tstms. Showers likely .

TUE
SE winds around 5 kt. Waves flat. A chance of showers. A chance of tstms through the night.

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

ANZ533-112000
Chesapeake Bay from North Beach to Drum Point
134 AM EDT Fri Jul 11 2025

OVERNIGHT
SW winds 5 kt. Waves flat. Patchy fog. Vsby 1 to 3 NM.

FRI
NE winds around 5 kt. Waves flat. Patchy fog. Vsby 1 to 3 NM.

FRI NIGHT
S winds around 5 kt. Waves flat.

SAT
SE winds around 5 kt. Waves 1 ft or less.

SAT NIGHT
SE winds 5 to 10 kt. Waves 1 ft.

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

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

MON
S winds around 5 kt. Waves 1 ft or less. A chance of tstms.

TUE
SE winds around 5 kt. Waves 1 ft or less. A chance of showers. A chance of tstms through the night.

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

ANZ541-112000
Choptank River to Cambridge MD and the Little Choptank River
134 AM EDT Fri Jul 11 2025

OVERNIGHT
SW winds 5 kt. Waves flat. A slight chance of showers and tstms. Patchy fog. Vsby 1 to 3 NM.

FRI
Light winds. Waves flat. Patchy fog. Vsby 1 to 3 NM.

FRI NIGHT
S winds around 5 kt. Waves flat.

SAT
SE winds around 5 kt. Waves flat.

SAT NIGHT
SE winds 5 kt. Waves less than 1 ft.

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

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

MON
S winds around 5 kt. Waves flat. A chance of tstms.

TUE
SE winds around 5 kt. Waves flat. A chance of showers. A chance of tstms through the night.

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

ANZ542-112000
Patuxent River to Broomes Island MD
134 AM EDT Fri Jul 11 2025

OVERNIGHT
Light winds. Waves flat. A slight chance of showers and tstms. Patchy fog. Vsby 1 to 3 NM.

FRI
E winds around 5 kt. Waves 1 ft or less. Patchy fog. Vsby 1 to 3 NM.

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

SAT
SE winds around 5 kt. Waves 1 ft.

SAT NIGHT
SE winds around 5 kt. Waves 1 ft.

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

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

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

TUE
SE winds around 5 kt. Waves 1 ft. A chance of showers. A chance of tstms through the night.

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

ANZ534-112000
Chesapeake Bay from Drum Point to Smith Point
134 AM EDT Fri Jul 11 2025

OVERNIGHT
SW winds 5 kt. Waves less than 1 ft. A slight chance of showers and tstms. Vsby 1 to 3 NM.

FRI
E winds around 5 kt. Waves 1 ft or less. Patchy fog. Vsby 1 to 3 NM.

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

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

SAT NIGHT
SE winds 5 to 10 kt. Waves 1 ft.

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

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

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

TUE
E winds 5 kt...becoming S. Waves 1 ft. A chance of showers. A chance of tstms through the night.

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

ANZ543-112000
Tangier Sound and the inland waters surrounding Bloodsworth Island
134 AM EDT Fri Jul 11 2025

OVERNIGHT
SW winds 5 kt. Waves flat. A chance of showers with a slight chance of tstms. Patchy fog. Vsby 1 NM or less.

FRI
W winds around 5 kt. Waves flat. Patchy fog. Vsby 1 to 3 NM.

FRI NIGHT
S winds around 5 kt. Waves flat.

SAT
SE winds around 5 kt. Waves 1 ft or less.

SAT NIGHT
SE winds 5 to 10 kt. Waves 1 ft.

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

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

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

TUE
SE winds 5 kt...becoming S. Waves 1 ft or less. A chance of tstms. A chance of showers.

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

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