National Weather Service Marine Forecast FZUS51 KLWX

FZUS51 KLWX 052358
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
657 PM EST Thu Nov 5 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.

ANZ500-060900
657 PM EST Thu Nov 5 2026

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

A cold front will push across the waters through Friday. Southerly channeling will produce a period of Small Craft Advisory conditions for most of the waters through this evening. Additional advisory conditions appear likely Saturday into Sunday behind the cold front. Weak high pressure returns this weekend before another potent front crosses Monday leading to another brief period of advisory-level winds.

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ANZ535-060900
Tidal Potomac from Key Bridge to Indian Head
657 PM EST Thu Nov 5 2026

TONIGHT
S winds 5 to 10 kt...becoming NW late. Waves 1 ft. Numerous showers with isolated tstms. Patchy fog after midnight.

FRI
N winds around 5 kt. Waves 1 ft. Numerous showers. Patchy fog. Vsby 1 to 3 NM.

FRI NIGHT
NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.

SAT
NW winds 10 to 15 kt with gusts to 25 kt. Waves 1 ft.

SAT NIGHT
NW winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.

SUN
W winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.

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

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

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

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

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ANZ536-060900
Tidal Potomac from Indian Head to Cobb Island
657 PM EST Thu Nov 5 2026

TONIGHT
SW winds 5 to 10 kt. Waves 1 ft. Scattered showers with isolated tstms this evening, then numerous showers and scattered tstms after midnight. Patchy fog after midnight with vsby 1 NM or less.

FRI
N winds around 5 kt. Waves 1 ft. Numerous showers. Patchy fog. Vsby 1 NM or less.

FRI NIGHT
NE winds around 5 kt...becoming NW 10 to 15 kt with gusts to 20 kt after midnight. Waves 1 ft.

SAT
NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.

SAT NIGHT
NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.

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

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

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

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

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

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ANZ537-060900
Tidal Potomac from Cobb Island to Smith Point
657 PM EST Thu Nov 5 2026

TONIGHT
S winds 10 kt. Waves 1 ft. Scattered showers with isolated tstms this evening, then showers and scattered tstms after midnight. Patchy fog after midnight with vsby 1 NM or less.

FRI
SW winds 5 to 10 kt...becoming N in the late morning and afternoon. Waves 1 ft. Showers and scattered tstms. Patchy fog. Vsby 1 NM or less.

FRI NIGHT
N winds 10 to 15 kt. Waves 1 ft.

SAT
NW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.

SAT NIGHT
NW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.

SUN
NW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.

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

MON
NW winds 10 to 15 kt...becoming W 5 kt. Waves 1 to 2 ft.

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

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

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ANZ530-060900
Chesapeake Bay north of Pooles Island
657 PM EST Thu Nov 5 2026

TONIGHT
S winds 10 kt...becoming W late. Waves 1 ft. Isolated tstms. Showers. Patchy fog after midnight.

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

FRI NIGHT
NW winds 10 to 15 kt. Waves 1 ft or less.

SAT
NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.

SAT NIGHT
W winds 15 to 20 kt. Waves 1 ft.

SUN
NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.

SUN NIGHT
W winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.

MON
NW winds 10 to 15 kt...becoming W 5 kt. Waves 1 ft or less.

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

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

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ANZ531-060900
Chesapeake Bay from Pooles Island to Sandy Point
657 PM EST Thu Nov 5 2026

TONIGHT
S winds 10 kt...becoming W late. Waves 1 to 2 ft. Isolated tstms. Showers. Patchy fog after midnight.

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

FRI NIGHT
W winds 5 to 10 kt...becoming NW 10 to 15 kt with gusts to 20 kt late. Waves flat...building to 2 ft after midnight.

SAT
NW winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.

SAT NIGHT
NW winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.

SUN
NW winds 15 to 20 kt. Waves 2 ft.

SUN NIGHT
W winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.

MON
W winds 10 to 15 kt. Waves 1 to 2 ft.

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

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

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ANZ538-060900
Patapsco River including Baltimore Harbor
657 PM EST Thu Nov 5 2026

TONIGHT
S winds 5 to 10 kt...becoming NW late. Waves 1 ft or less. Isolated tstms. Showers. Patchy fog after midnight.

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

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

SAT
NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.

SAT NIGHT
NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.

SUN
W winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.

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

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

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

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

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ANZ539-060900
Chester River to Queenstown MD
657 PM EST Thu Nov 5 2026

TONIGHT
S winds 5 to 10 kt. Waves 1 ft. Showers with isolated tstms. Patchy fog after midnight with vsby 1 NM or less.

FRI
N winds around 5 kt. Waves 1 ft or less. Showers. Patchy fog. Vsby 1 NM or less.

FRI NIGHT
W winds around 5 kt...becoming NW 10 to 15 kt with gusts to 20 kt after midnight. Waves flat... building to 2 ft after midnight.

SAT
NW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.

SAT NIGHT
NW winds 15 to 20 kt. Waves 2 to 3 ft.

SUN
NW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.

SUN NIGHT
W winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.

MON
NW winds 10 to 15 kt...becoming W 5 kt after midnight. Waves 1 to 2 ft.

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

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

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ANZ532-060900
Chesapeake Bay from Sandy Point to North Beach
657 PM EST Thu Nov 5 2026

TONIGHT
S winds 5 to 10 kt. Waves 1 to 2 ft. Numerous showers with isolated tstms this evening, then numerous showers and scattered tstms after midnight. Patchy fog after midnight with vsby 1 NM or less.

FRI
N winds 5 to 10 kt...becoming NE late. Waves 1 ft. Showers. Patchy fog. Vsby 1 NM or less.

FRI NIGHT
SW winds around 5 kt...becoming NW 10 to 15 kt with gusts to 20 kt after midnight. Waves flat... building to 2 ft after midnight.

SAT
NW winds 15 to 20 kt. Waves 2 ft.

SAT NIGHT
NW winds 15 to 20 kt. Waves 2 ft.

SUN
W winds 15 to 20 kt. Waves 2 ft.

SUN NIGHT
W winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.

MON
W winds 10 to 15 kt. Waves 1 to 2 ft.

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

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

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ANZ540-060900
Eastern Bay
657 PM EST Thu Nov 5 2026

TONIGHT
S winds 5 to 10 kt. Waves 1 ft. Numerous showers with isolated tstms this evening, then showers and scattered tstms after midnight. Patchy fog after midnight with vsby 1 NM or less.

FRI
N winds around 5 kt. Waves 1 ft. Showers. Patchy fog. Vsby 1 NM or less.

FRI NIGHT
W winds around 5 kt...becoming NW 10 to 15 kt with gusts to 20 kt after midnight. Waves 1 ft or less.

SAT
NW winds 15 to 20 kt. Waves 2 ft.

SAT NIGHT
NW winds 15 to 20 kt. Waves 2 ft.

SUN
NW winds 15 to 20 kt. Waves 1 to 2 ft.

SUN NIGHT
W winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.

MON
NW winds 10 to 15 kt...becoming W 5 kt after midnight. Waves 1 to 2 ft.

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

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

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ANZ533-060900
Chesapeake Bay from North Beach to Drum Point
657 PM EST Thu Nov 5 2026

TONIGHT
S winds 10 kt. Waves 1 to 2 ft. Scattered showers and tstms this evening, then showers and scattered tstms after midnight. Patchy fog after midnight with vsby 1 NM or less.

FRI
NW winds 5 to 10 kt...becoming N in the afternoon. Waves 1 ft. Showers and scattered tstms. Patchy fog. Vsby 1 NM or less.

FRI NIGHT
N winds around 5 kt...becoming NW after midnight, then increasing to 15 to 20 kt late. Waves 1 to 2 ft.

SAT
NW winds 15 to 20 kt. Waves 2 to 3 ft.

SAT NIGHT
NW winds 15 to 20 kt. Waves 2 to 3 ft.

SUN
NW winds 15 to 20 kt. Waves 2 ft.

SUN NIGHT
W winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.

MON
W winds 10 to 15 kt. Waves 1 to 2 ft.

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

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

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ANZ541-060900
Choptank River to Cambridge MD and the Little Choptank River
657 PM EST Thu Nov 5 2026

TONIGHT
S winds 10 kt. Waves 1 ft. Scattered showers and tstms this evening, then showers and scattered tstms after midnight. Patchy fog after midnight with vsby 1 NM or less.

FRI
NW winds 5 to 10 kt...becoming N in the afternoon. Waves 1 ft. Showers and scattered tstms. Patchy fog. Vsby 1 NM or less.

FRI NIGHT
N winds around 5 kt...becoming NW after midnight, then increasing to 15 to 20 kt late. Waves flat... building to 2 ft after midnight.

SAT
NW winds 15 to 20 kt. Waves 2 ft.

SAT NIGHT
NW winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.

SUN
NW winds 15 to 20 kt. Waves 2 ft.

SUN NIGHT
W winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.

MON
NW winds 10 to 15 kt...becoming W 5 kt after midnight. Waves 1 to 2 ft.

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

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

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ANZ542-060900
Patuxent River to Broomes Island MD
657 PM EST Thu Nov 5 2026

TONIGHT
S winds 5 to 10 kt. Waves 1 ft. Scattered showers and tstms this evening, then showers and scattered tstms after midnight. Patchy fog after midnight with vsby 1 NM or less.

FRI
N winds around 5 kt. Waves 1 ft. Showers and scattered tstms. Patchy fog. Vsby 1 NM or less.

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

SAT
NW winds 10 kt with gusts to 20 kt. Waves 1 ft.

SAT NIGHT
NW winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.

SUN
NW winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.

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

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

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

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

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ANZ534-060900
Chesapeake Bay from Drum Point to Smith Point
657 PM EST Thu Nov 5 2026

SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 AM EST FRIDAY

TONIGHT
S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. Scattered showers with isolated tstms this evening, then showers and scattered tstms after midnight. Patchy fog after midnight with vsby 1 NM or less.

FRI
SW winds 10 kt...becoming N in the late morning and afternoon. Waves 1 to 2 ft. Showers and scattered tstms. Patchy fog. Vsby 1 NM or less.

FRI NIGHT
N winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft. Numerous showers.

SAT
NW winds 15 to 20 kt. Waves 3 ft.

SAT NIGHT
NW winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.

SUN
NW winds 15 to 20 kt. Waves 2 to 3 ft.

SUN NIGHT
W winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.

MON
NW winds 15 to 20 kt...becoming W 5 to 10 kt. Waves 2 to 3 ft...subsiding to 1 ft.

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

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

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ANZ543-060900
Tangier Sound and the inland waters surrounding Bloodsworth Island
657 PM EST Thu Nov 5 2026

SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 AM EST FRIDAY

TONIGHT
S winds 15 to 20 kt. Waves 1 to 2 ft. Scattered showers with isolated tstms this evening, then showers and scattered tstms after midnight. Patchy fog after midnight with vsby 1 NM or less.

FRI
SW winds 10 to 15 kt...becoming N 5 to 10 kt in the afternoon. Waves 1 ft. Showers and scattered tstms. Patchy fog. Vsby 1 NM or less.

FRI NIGHT
N winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. Scattered showers.

SAT
NW winds 15 to 20 kt. Waves 2 ft.

SAT NIGHT
NW winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.

SUN
NW winds 15 to 20 kt. Waves 2 ft.

SUN NIGHT
W winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.

MON
NW winds 15 to 20 kt...becoming W 5 to 10 kt. Waves 1 to 2 ft.

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

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