National Weather Service Marine Forecast FZUS51 KLWX

FZUS51 KLWX 030257
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
1057 PM EDT Thu Jul 2 2026

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.

ANZ500-030800
1057 PM EDT Thu Jul 2 2026

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

A broad area of hot high pressure will remain near the Mid-Atlantic through the weekend. The chance for strong thunderstorms increases Friday into early next week, with Special Marine Warnings possible.

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ANZ535-030800
Tidal Potomac from Key Bridge to Indian Head
1057 PM EDT Thu Jul 2 2026

REST OF TONIGHT
SW winds around 5 kt. Waves 1 ft or less.

FRI
W winds around 5 kt. Waves 1 ft.

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

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

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

SUN
NE winds around 5 kt. Waves 1 ft. Showers and tstms likely.

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

MON
E winds 5 to 10 kt. Waves 1 ft. A chance of showers in the morning, then showers likely with a chance of tstms.

TUE
N winds 5 to 10 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.

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ANZ536-030800
Tidal Potomac from Indian Head to Cobb Island
1057 PM EDT Thu Jul 2 2026

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

FRI
W winds around 5 kt. Waves 1 ft.

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

SAT
W winds around 5 kt. Waves 1 ft. A chance of showers and tstms.

SAT NIGHT
W winds around 5 kt. Waves 1 ft. A chance of showers and tstms.

SUN
NE winds around 5 kt. Waves 1 ft or less. Showers and tstms likely.

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

MON
E winds around 5 kt. Waves 1 ft. Showers likely with a chance of tstms.

TUE
N winds 5 to 10 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.

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ANZ537-030800
Tidal Potomac from Cobb Island to Smith Point
1057 PM EDT Thu Jul 2 2026

REST OF TONIGHT
SW winds 10 kt. Waves 1 ft.

FRI
SW winds around 5 kt. Waves 1 ft.

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

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

SAT NIGHT
SW winds around 5 kt. Waves 1 ft. A chance of showers and tstms.

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

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

MON
SE winds 5 to 10 kt. Waves 1 ft. Showers likely with a chance of tstms.

TUE
N winds 5 to 10 kt...becoming NE. Waves 1 ft. A chance of showers.

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

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ANZ530-030800
Chesapeake Bay north of Pooles Island
1057 PM EDT Thu Jul 2 2026

REST OF TONIGHT
SW winds 5 to 10 kt...becoming W late. Waves 1 ft.

FRI
W winds around 5 kt...becoming SW late. Waves 1 ft.

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

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

SAT NIGHT
W winds 5 to 10 kt...becoming N after midnight. Waves 1 ft. A chance of showers and tstms.

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

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

MON
E winds 5 to 10 kt. Waves 1 ft. Showers likely with a chance of tstms.

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

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

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ANZ531-030800
Chesapeake Bay from Pooles Island to Sandy Point
1057 PM EDT Thu Jul 2 2026

REST OF TONIGHT
SW winds 5 to 10 kt...becoming W late. Waves 1 ft.

FRI
W winds around 5 kt...becoming S late. Waves 1 ft or less.

FRI NIGHT
SW winds 5 to 10 kt. Waves 1 ft or less.

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

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

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

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

MON
E winds 5 to 10 kt. Waves 1 ft. Showers likely with a chance of tstms.

TUE
NE winds 5 to 10 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.

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ANZ538-030800
Patapsco River including Baltimore Harbor
1057 PM EDT Thu Jul 2 2026

REST OF TONIGHT
W winds 5 kt. Waves flat.

FRI
SE winds around 5 kt. Waves flat.

FRI NIGHT
W winds around 5 kt. Waves flat.

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

SAT NIGHT
SW winds 5 to 10 kt...becoming NW after midnight. Waves 1 ft or less. A chance of showers and tstms.

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

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

MON
E winds 5 to 10 kt. Waves 1 ft. A chance of tstms. A chance of showers in the morning, then showers likely.

TUE
NE winds 5 to 10 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.

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ANZ539-030800
Chester River to Queenstown MD
1057 PM EDT Thu Jul 2 2026

REST OF TONIGHT
SW winds 5 to 10 kt. Waves 1 ft or less.

FRI
W winds around 5 kt. Waves 1 ft or less.

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

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

SAT NIGHT
W winds 5 to 10 kt. Waves 1 ft or less. A chance of showers and tstms.

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

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

MON
E winds 5 to 10 kt. Waves 1 ft. Showers likely with a chance of tstms.

TUE
NE winds 5 to 10 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.

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ANZ532-030800
Chesapeake Bay from Sandy Point to North Beach
1057 PM EDT Thu Jul 2 2026

REST OF TONIGHT
SW winds 5 to 10 kt...becoming W late. Waves 1 ft.

FRI
W winds around 5 kt...becoming S late. Waves 1 ft.

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

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

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

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

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

MON
E winds 5 to 10 kt. Waves 1 ft. A chance of showers in the morning, then showers likely with a chance of tstms.

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

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

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ANZ540-030800
Eastern Bay
1057 PM EDT Thu Jul 2 2026

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

FRI
W winds 5 kt. Waves less than 1 ft.

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

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

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

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

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

MON
SE winds 5 to 10 kt. Waves 1 ft. A chance of showers in the morning, then showers likely with a chance of tstms.

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

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

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ANZ533-030800
Chesapeake Bay from North Beach to Drum Point
1057 PM EDT Thu Jul 2 2026

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

FRI
NW winds around 5 kt...becoming S late. Waves 1 ft.

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

SAT
NW winds around 5 kt...becoming SW in the afternoon. Waves 1 ft or less. A chance of showers and tstms.

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

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

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

MON
SE winds 5 to 10 kt. Waves 1 ft. Showers likely with a chance of tstms.

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

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

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ANZ541-030800
Choptank River to Cambridge MD and the Little Choptank River
1057 PM EDT Thu Jul 2 2026

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

FRI
W winds 5 kt. Waves less than 1 ft.

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

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

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

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

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

MON
SE winds 5 to 10 kt. Waves 1 ft. A chance of showers in the morning, then showers likely with a chance of tstms.

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

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

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ANZ542-030800
Patuxent River to Broomes Island MD
1057 PM EDT Thu Jul 2 2026

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

FRI
NW winds around 5 kt. Waves 1 ft.

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

SAT
W winds around 5 kt. Waves 1 ft. A chance of showers and tstms.

SAT NIGHT
SW winds around 5 kt. Waves 1 ft. A chance of showers and tstms.

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

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

MON
SE winds 5 to 10 kt. Waves 1 ft. A chance of showers in the morning, then showers likely with a chance of tstms.

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

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

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ANZ534-030800
Chesapeake Bay from Drum Point to Smith Point
1057 PM EDT Thu Jul 2 2026

REST OF TONIGHT
SW winds 10 kt. Waves 1 to 2 ft.

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

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

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

SAT NIGHT
S winds 5 to 10 kt...becoming W after midnight. Waves 1 ft. A chance of showers and tstms.

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

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

MON
SE winds 10 to 15 kt. Waves 1 to 2 ft. A chance of showers through the day. A chance of tstms. Showers likely through the night.

TUE
N winds 10 kt...becoming NE. Waves 1 to 2 ft. A chance of showers. A chance of tstms.

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

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ANZ543-030800
Tangier Sound and the inland waters surrounding Bloodsworth Island
1057 PM EDT Thu Jul 2 2026

REST OF TONIGHT
SW winds 10 to 15 kt. Waves 1 ft.

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

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

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

SAT NIGHT
S winds 5 to 10 kt...becoming W after midnight. Waves 1 ft. A chance of showers and tstms.

SUN
E winds around 5 kt. Waves 1 ft or less.

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

MON
SE winds 5 to 10 kt. Waves 1 ft. A chance of showers through the day. A chance of tstms. Showers likely through the night.

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

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