National Weather Service Marine Forecast FZUS51 KLWX

FZUS51 KLWX 190558
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
1258 AM EST Thu Feb 19 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.

ANZ500-192100
1258 AM EST Thu Feb 19 2026

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

A front will waver near the local waters through Friday, with chances for rain and fog each day. Relatively higher pressure is forecast Saturday before low pressure develops along the coast Sunday. Small Craft Advisories are possible late Friday into Saturday, and likely Sunday into Monday.

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ANZ535-192100
Tidal Potomac from Key Bridge to Indian Head
1258 AM EST Thu Feb 19 2026

OVERNIGHT
N winds around 5 kt. Waves 1 ft or less.

THU
E winds 5 to 10 kt. Waves 1 ft. Rain. Patchy fog. Vsby 1 NM or less.

THU NIGHT
NE winds 5 to 10 kt. Waves 1 ft. Rain. Vsby 1 to 3 NM.

FRI
E winds 5 kt...becoming SW in the afternoon. Waves 1 ft. Rain.

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

SAT
NW winds around 5 kt. Waves 1 ft.

SAT NIGHT
NE winds around 5 kt. Waves 1 ft. A chance of rain.

SUN
N winds 10 to 15 kt. Waves 1 ft. Rain through the day. Snow through the night, then a chance of snow after midnight.

MON
NW winds 10 to 15 kt. Waves 1 ft. A chance of snow in the morning.

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ANZ536-192100
Tidal Potomac from Indian Head to Cobb Island
1258 AM EST Thu Feb 19 2026

OVERNIGHT
NW winds 5 kt. Waves less than 1 ft.

THU
E winds 5 to 10 kt. Waves 1 ft. Rain. Vsby 1 to 3 NM.

THU NIGHT
NE winds 5 to 10 kt. Waves 1 ft. Rain. Vsby 1 to 3 NM.

FRI
NE winds 5 kt...becoming SW in the afternoon. Waves 1 ft. Rain.

FRI NIGHT
W 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. A chance of rain.

SUN
NE winds 10 to 15 kt...becoming N after midnight. Waves 1 to 2 ft. Rain through the day, then snow likely in the evening. A chance of snow after midnight.

MON
NW winds 15 to 20 kt. Waves 2 ft. A chance of snow in the morning.

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ANZ537-192100
Tidal Potomac from Cobb Island to Smith Point
1258 AM EST Thu Feb 19 2026

OVERNIGHT
NW winds 5 kt. Waves less than 1 ft.

THU
E winds 5 to 10 kt. Waves 1 ft. Rain. Patchy fog. Vsby 1 to 3 NM.

THU NIGHT
E winds 5 to 10 kt. Waves 1 ft. Rain. Vsby 1 to 3 NM.

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

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

SAT
N winds around 5 kt. Waves flat.

SAT NIGHT
E winds around 5 kt. Waves 1 ft or less. A chance of rain.

SUN
NE winds 15 to 20 kt...becoming N after midnight. Waves 2 to 3 ft. Rain. Snow likely in the evening, then a chance of snow after midnight.

MON
NW winds 15 to 20 kt. Waves 2 to 3 ft. A chance of snow in the morning.

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ANZ530-192100
Chesapeake Bay north of Pooles Island
1258 AM EST Thu Feb 19 2026

OVERNIGHT
NE winds 5 kt. Waves flat. Patchy fog. Vsby 1 NM or less.

THU
E winds 5 to 10 kt. Waves 1 ft. Rain likely. Areas of dense fog. Vsby 1 NM or less.

THU NIGHT
E winds 5 to 10 kt. Waves 1 ft. Rain. Vsby 1 to 3 NM.

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

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

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

SAT NIGHT
NE winds around 5 kt. Waves flat. A chance of rain.

SUN
NE winds 10 to 15 kt. Waves 1 ft. Rain likely through the day. Snow likely, then a chance of snow after midnight.

MON
NW winds 10 to 15 kt. Waves 1 ft. A chance of snow in the morning.

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ANZ531-192100
Chesapeake Bay from Pooles Island to Sandy Point
1258 AM EST Thu Feb 19 2026

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

THU
NE winds 5 to 10 kt. Waves 1 ft. Rain. Areas of dense fog. Vsby 1 NM or less.

THU NIGHT
NE winds 10 kt. Waves 1 ft. Rain. Vsby 1 to 3 NM.

FRI
NE winds 5 to 10 kt...becoming W in the afternoon. Waves 1 ft. Rain.

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

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

SAT NIGHT
NE winds around 5 kt. Waves 1 ft or less. A chance of rain.

SUN
NE winds 10 to 15 kt...becoming N after midnight. Waves 1 to 2 ft. Rain through the day. Snow, then a chance of snow after midnight.

MON
NW winds 15 to 20 kt. Waves 2 to 3 ft. A chance of snow in the morning.

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ANZ538-192100
Patapsco River including Baltimore Harbor
1258 AM EST Thu Feb 19 2026

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

THU
NE winds 5 to 10 kt. Waves 1 ft. Rain. Widespread dense fog. Vsby 1 NM or less.

THU NIGHT
NE winds 5 to 10 kt. Waves 1 ft. Rain. Vsby 1 to 3 NM.

FRI
N winds 5 kt. Waves less than 1 ft. Rain.

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

SAT
NW winds 5 kt. Waves flat.

SAT NIGHT
NE winds around 5 kt. Waves flat. A chance of rain.

SUN
NE winds 5 to 10 kt. Waves 1 ft. Rain through the day. Snow, then a chance of snow after midnight.

MON
NW winds 10 to 15 kt. Waves 1 ft. A chance of snow in the morning.

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ANZ539-192100
Chester River to Queenstown MD
1258 AM EST Thu Feb 19 2026

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

THU
E winds 5 to 10 kt. Waves 1 ft. Rain. Areas of dense fog. Vsby 1 NM or less.

THU NIGHT
E winds 5 to 10 kt. Waves 1 ft. Rain. Vsby 1 to 3 NM.

FRI
E winds 5 to 10 kt...becoming W in the afternoon. Waves 1 ft or less. Rain.

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

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

SAT NIGHT
NE winds around 5 kt. Waves flat. A chance of rain.

SUN
NE winds 10 to 15 kt...becoming N after midnight. Waves 1 to 2 ft. Rain through the day. Snow, then a chance of snow after midnight.

MON
NW winds 10 to 15 kt. Waves 2 ft. A chance of snow in the morning.

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ANZ532-192100
Chesapeake Bay from Sandy Point to North Beach
1258 AM EST Thu Feb 19 2026

OVERNIGHT
N winds 5 kt. Waves less than 1 ft.

THU
NE winds 5 to 10 kt. Waves 1 ft. Rain. Areas of dense fog. Vsby 1 NM or less.

THU NIGHT
NE winds 10 to 15 kt. Waves 1 ft. Rain. Vsby 1 to 3 NM.

FRI
NE winds 5 to 10 kt...becoming SW in the afternoon. Waves 1 ft. Rain.

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

SAT
NW winds 5 kt. Waves less than 1 ft.

SAT NIGHT
NE winds around 5 kt. Waves 1 ft or less. A chance of rain.

SUN
NE winds 10 to 15 kt...becoming N 15 to 20 kt after midnight. Waves 1 to 2 ft...building to 3 ft after midnight. Rain through the day. Snow, then a chance of snow after midnight.

MON
NW winds 15 to 20 kt. Waves 2 to 3 ft. A chance of snow in the morning.

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ANZ540-192100
Eastern Bay
1258 AM EST Thu Feb 19 2026

OVERNIGHT
N winds 5 kt. Waves flat.

THU
E winds 5 to 10 kt. Waves 1 ft. Rain. Areas of dense fog. Vsby 1 NM or less.

THU NIGHT
E winds 5 to 10 kt. Waves 1 ft. Rain. Vsby 1 to 3 NM.

FRI
E winds 5 to 10 kt...becoming SW in the afternoon. Waves 1 ft. Rain.

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

SAT
NW winds 5 kt. Waves less than 1 ft.

SAT NIGHT
NE winds around 5 kt. Waves flat. A chance of rain.

SUN
NE winds 10 to 15 kt...becoming N 15 to 20 kt after midnight. Waves 1 to 2 ft. Rain through the day. Snow through the night, then a chance of snow after midnight.

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

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ANZ533-192100
Chesapeake Bay from North Beach to Drum Point
1258 AM EST Thu Feb 19 2026

OVERNIGHT
NW winds 5 kt. Waves less than 1 ft.

THU
NE winds 5 to 10 kt. Waves 1 ft. Rain. Patchy fog. Vsby 1 NM or less.

THU NIGHT
E winds 10 to 15 kt. Waves 1 to 2 ft. Rain. Vsby 1 to 3 NM.

FRI
NE winds 5 to 10 kt...becoming SW in the afternoon. Waves 1 ft. Rain.

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

SAT
NW winds 5 kt. Waves less than 1 ft.

SAT NIGHT
NE winds around 5 kt. Waves 1 ft or less. A chance of rain.

SUN
NE winds 15 to 20 kt...becoming N after midnight. Waves 1 to 2 ft...building to 3 ft. Rain through the day. Snow through the night, then a chance of snow after midnight.

MON
NW winds 15 to 20 kt. Waves 2 to 3 ft. A chance of snow in the morning.

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ANZ541-192100
Choptank River to Cambridge MD and the Little Choptank River
1258 AM EST Thu Feb 19 2026

OVERNIGHT
NW winds 5 kt. Waves less than 1 ft.

THU
E winds 5 to 10 kt. Waves 1 ft. Rain. Patchy fog. Vsby 1 NM or less.

THU NIGHT
E winds 10 to 15 kt. Waves 1 ft. Rain. Vsby 1 to 3 NM.

FRI
E winds 5 to 10 kt...becoming SW in the afternoon. Waves 1 ft. Rain.

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

SAT
NW winds 5 kt. Waves less than 1 ft.

SAT NIGHT
NE winds around 5 kt. Waves 1 ft or less. A chance of rain.

SUN
NE winds 15 to 20 kt...becoming N after midnight. Waves 1 to 2 ft. Rain through the day. Snow through the night, then a chance of snow after midnight.

MON
NW winds 15 to 20 kt. Waves 2 ft. A chance of snow in the morning.

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ANZ542-192100
Patuxent River to Broomes Island MD
1258 AM EST Thu Feb 19 2026

OVERNIGHT
NW winds 5 kt. Waves less than 1 ft.

THU
E winds 5 to 10 kt. Waves 1 ft. Rain. Patchy fog. Vsby 1 to 3 NM.

THU NIGHT
E winds 5 to 10 kt. Waves 1 ft. Rain. Vsby 1 to 3 NM.

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

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

SAT
N winds 5 kt. Waves less than 1 ft.

SAT NIGHT
NE winds around 5 kt. Waves 1 ft. A chance of rain.

SUN
NE winds 10 to 15 kt...becoming N after midnight. Waves 1 ft. Rain through the day. Snow through the night, then a chance of snow after midnight.

MON
NW winds 10 to 15 kt. Waves 1 ft. A chance of snow in the morning.

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ANZ534-192100
Chesapeake Bay from Drum Point to Smith Point
1258 AM EST Thu Feb 19 2026

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

THU
E winds 5 to 10 kt. Waves 1 ft. Rain. Patchy fog. Vsby 1 to 3 NM.

THU NIGHT
E winds 5 to 10 kt. Waves 1 ft. Rain. Vsby 1 to 3 NM.

FRI
S winds 5 to 10 kt. Waves 1 ft. Rain.

FRI NIGHT
W winds 5 to 10 kt. Waves 1 to 2 ft.

SAT
N winds 5 kt. Waves less than 1 ft.

SAT NIGHT
NE winds 5 to 10 kt. Waves 1 ft or less. A chance of rain.

SUN
NE winds 15 to 20 kt...becoming N 20 to 25 kt after midnight. Waves 2 to 3 ft...building to 4 ft. Rain. Snow likely in the evening, then a chance of snow after midnight.

MON
NW winds 20 to 25 kt. Waves 3 ft. A chance of snow through the day.

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ANZ543-192100
Tangier Sound and the inland waters surrounding Bloodsworth Island
1258 AM EST Thu Feb 19 2026

OVERNIGHT
W winds 10 kt...becoming N late. Waves 1 ft.

THU
E winds 5 to 10 kt. Waves 1 ft. Rain. Patchy fog. Vsby 1 to 3 NM.

THU NIGHT
E winds 5 to 10 kt. Waves 1 ft. Rain. Vsby 1 to 3 NM.

FRI
S winds 5 to 10 kt. Waves 1 ft. Rain.

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

SAT
NW winds 5 kt. Waves less than 1 ft.

SAT NIGHT
NE winds around 5 kt. Waves 1 ft or less. A chance of rain.

SUN
NE winds 15 to 20 kt...becoming N 20 to 25 kt after midnight. Waves 1 to 2 ft...building to 3 ft after midnight. Rain. Snow likely in the evening, then a chance of snow after midnight.

MON
NW winds 20 to 25 kt. Waves 2 to 3 ft. A chance of snow through the day.