Station List

National Weather Service Marine Forecast FZUS51 KLWX

FZUS51 KLWX 290835
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
434 AM EDT Fri Aug 29 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.

ANZ500-292300
434 AM EDT Fri Aug 29 2025

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

A cold front will cross the waters today. High pressure will return for the weekend and will continue to influence the area into next week. Small Craft Advisories may be needed for portions of the waters tonight.

ANZ535-292300
Tidal Potomac from Key Bridge to Indian Head
434 AM EDT Fri Aug 29 2025

SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM EDT THIS MORNING THROUGH THIS AFTERNOON

REST OF THE OVERNIGHT
W winds 5 kt. Waves less than 1 ft.

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

TONIGHT
N winds 5 to 10 kt. Waves 1 ft.

SAT
N winds around 5 kt. Waves 1 ft.

SAT NIGHT
NE winds around 5 kt. Waves 1 ft or less.

SUN
NE winds around 5 kt. Waves 1 ft.

SUN NIGHT
NE winds around 5 kt. Waves 1 ft or less.

MON
E winds around 5 kt. Waves 1 ft.

TUE
E winds around 5 kt. Waves 1 ft.

ANZ536-292300
Tidal Potomac from Indian Head to Cobb Island
434 AM EDT Fri Aug 29 2025

REST OF THE OVERNIGHT
W winds 5 kt. Waves less than 1 ft.

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

TONIGHT
N winds 5 to 10 kt. Waves 1 ft.

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

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

SUN
NE winds around 5 kt. Waves 1 ft.

SUN NIGHT
NE winds around 5 kt. Waves 1 ft.

MON
E winds around 5 kt. Waves 1 ft.

TUE
E winds around 5 kt. Waves 1 ft.

ANZ537-292300
Tidal Potomac from Cobb Island to Smith Point
434 AM EDT Fri Aug 29 2025

REST OF THE OVERNIGHT
SW winds 10 kt. Waves 1 ft.

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

TONIGHT
N winds 5 to 10 kt. Waves 1 ft.

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

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

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

SUN NIGHT
E winds around 5 kt. Waves 1 ft.

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

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

ANZ530-292300
Chesapeake Bay north of Pooles Island
434 AM EDT Fri Aug 29 2025

SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM EDT THIS MORNING THROUGH THIS AFTERNOON

REST OF THE OVERNIGHT
W winds 5 kt. Waves less than 1 ft.

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

TONIGHT
N winds 5 to 10 kt. Waves 1 ft.

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

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

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

SUN NIGHT
NE winds around 5 kt. Waves 1 ft.

MON
E winds around 5 kt. Waves 1 ft.

TUE
E winds around 5 kt. Waves 1 ft.

ANZ531-292300
Chesapeake Bay from Pooles Island to Sandy Point
434 AM EDT Fri Aug 29 2025

SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM EDT THIS MORNING THROUGH THIS AFTERNOON

REST OF THE OVERNIGHT
NW winds 10 kt. Waves 1 ft.

TODAY
NW winds 5 to 10 kt. Gusts up to 20 kt in the late morning and afternoon. Waves 1 to 2 ft.

TONIGHT
NW winds 10 to 15 kt...becoming N late. Waves 2 ft.

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

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

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

SUN NIGHT
NE winds around 5 kt. Waves 1 ft or less.

MON
E winds 5 kt. Waves less than 1 ft.

TUE
E winds 5 to 10 kt. Waves 1 ft or less.

ANZ538-292300
Patapsco River including Baltimore Harbor
434 AM EDT Fri Aug 29 2025

SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM EDT THIS MORNING THROUGH THIS AFTERNOON

REST OF THE OVERNIGHT
W winds 5 kt. Waves flat.

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

TONIGHT
N winds 5 to 10 kt. Waves 1 ft.

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

SAT NIGHT
NE winds around 5 kt. Waves flat.

SUN
NE winds 5 kt. Waves flat.

SUN NIGHT
NE winds around 5 kt. Waves flat.

MON
E winds around 5 kt. Waves flat.

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

ANZ539-292300
Chester River to Queenstown MD
434 AM EDT Fri Aug 29 2025

SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM EDT THIS MORNING THROUGH THIS AFTERNOON

REST OF THE OVERNIGHT
W winds 10 kt. Waves 1 ft.

TODAY
NW winds 5 to 10 kt. Gusts up to 20 kt in the late morning and afternoon. Waves 1 to 2 ft.

TONIGHT
N winds 10 kt. Waves 2 ft.

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

SAT NIGHT
NE winds around 5 kt. Waves flat.

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

SUN NIGHT
E winds around 5 kt. Waves flat.

MON
E winds around 5 kt. Waves flat.

TUE
E winds 5 kt. Waves less than 1 ft.

ANZ532-292300
Chesapeake Bay from Sandy Point to North Beach
434 AM EDT Fri Aug 29 2025

SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT EARLY THIS MORNING

SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM EDT THIS MORNING THROUGH THIS AFTERNOON

REST OF THE OVERNIGHT
W winds 10 kt. Waves 1 ft.

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

TONIGHT
NW winds 10 to 15 kt...becoming N late. Waves 1 to 2 ft.

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

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

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

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

MON
E winds 5 to 10 kt. Waves 1 ft or less.

TUE
E winds 5 to 10 kt. Waves 1 ft or less.

ANZ540-292300
Eastern Bay
434 AM EDT Fri Aug 29 2025

SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM EDT THIS MORNING THROUGH THIS AFTERNOON

REST OF THE OVERNIGHT
W winds 10 kt. Waves 1 ft.

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

TONIGHT
N winds 5 to 10 kt. Waves 1 ft.

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

SAT NIGHT
NE winds around 5 kt. Waves flat.

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

SUN NIGHT
E winds around 5 kt. Waves flat.

MON
E winds 5 kt. Waves flat.

TUE
E winds 5 to 10 kt. Waves 1 ft or less.

ANZ533-292300
Chesapeake Bay from North Beach to Drum Point
434 AM EDT Fri Aug 29 2025

SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT EARLY THIS MORNING

REST OF THE OVERNIGHT
SW winds 10 kt. Waves 2 ft.

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

TONIGHT
NW winds 10 to 15 kt...becoming N late. Waves 1 to 2 ft.

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

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

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

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

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

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

ANZ541-292300
Choptank River to Cambridge MD and the Little Choptank River
434 AM EDT Fri Aug 29 2025

REST OF THE OVERNIGHT
SW winds 10 kt. Waves 1 ft.

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

TONIGHT
N winds 5 to 10 kt. Waves 1 ft.

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

SAT NIGHT
NE winds 5 kt. Waves flat.

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

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

MON
E winds 5 to 10 kt. Waves 1 ft or less.

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

ANZ542-292300
Patuxent River to Broomes Island MD
434 AM EDT Fri Aug 29 2025

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

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

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

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

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

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

SUN NIGHT
E winds around 5 kt. Waves 1 ft.

MON
E winds around 5 kt. Waves 1 ft.

TUE
E winds around 5 kt. Waves 1 ft.

ANZ534-292300
Chesapeake Bay from Drum Point to Smith Point
434 AM EDT Fri Aug 29 2025

SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT EARLY THIS MORNING

REST OF THE OVERNIGHT
SW winds 15 kt with gusts to 20 kt. Waves 2 ft.

TODAY
W winds 10 to 15 kt...becoming NW 5 to 10 kt in the late morning and afternoon. Waves 1 to 2 ft.

TONIGHT
NW winds 10 to 15 kt...becoming N late. Waves 1 to 2 ft.

SAT
N winds 10 to 15 kt. Waves 1 to 2 ft.

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

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

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

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

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

ANZ543-292300
Tangier Sound and the inland waters surrounding Bloodsworth Island
434 AM EDT Fri Aug 29 2025

SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT EARLY THIS MORNING

REST OF THE OVERNIGHT
SW winds 15 kt with gusts to 20 kt. Waves 2 ft.

TODAY
W winds 10 to 15 kt...becoming NW 5 to 10 kt in the late morning and afternoon. Waves 1 ft.

TONIGHT
N winds 5 to 10 kt. Waves 1 ft.

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

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

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

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

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

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