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Charlestown, MD Coastal Forecast

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CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
1035 AM EDT Thu Apr 24 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.

ANZ500-242000-
1035 AM EDT Thu Apr 24 2025

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

High pressure will move eastward from the mid-Atlantic Coast through
early Friday. A warm front will lift northward across the area on
Friday. A cold front will move through Saturday. Small Craft
Advisories may be needed late Friday into Saturday and are likely
late Saturday into Sunday.

$$

ANZ535-242000-
Tidal Potomac from Key Bridge to Indian Head-
1035 AM EDT Thu Apr 24 2025

.REST OF TODAY...S winds 5 to 10 kt. Waves 1 ft.
.TONIGHT...S winds 5 to 10 kt. Waves 1 ft.
.FRI...S winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...S winds 5 to 10 kt. Waves 1 ft. Showers likely.
.SAT...SW winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft. Showers
with a chance of tstms.
.SAT NIGHT...NW winds 10 kt with gusts to 20 kt. Waves 1 ft.
.SUN...NW winds 5 to 10 kt. Waves 1 ft.
.MON...S winds around 5 kt. Waves 1 ft.

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

$$

ANZ536-242000-
Tidal Potomac from Indian Head to Cobb Island-
1035 AM EDT Thu Apr 24 2025

.REST OF TODAY...SE winds 5 to 10 kt. Waves 1 ft.
.TONIGHT...SE winds 5 to 10 kt until early morning... becoming
light. Waves 1 ft.
.FRI...SE winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...S winds 5 to 10 kt. Waves 1 ft. Showers likely.
.SAT...SW winds 10 kt. Waves 1 ft. Showers with a chance of tstms.
.SAT NIGHT...NW winds 10 to 15 kt. Waves 1 ft.
.SUN...NW winds 5 to 10 kt. Waves 1 ft.
.MON...S winds around 5 kt...increasing to 5 to 10 kt after
midnight. Waves 1 ft.

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

$$

ANZ537-242000-
Tidal Potomac from Cobb Island to Smith Point-
1035 AM EDT Thu Apr 24 2025

.REST OF TODAY...SE winds 5 to 10 kt. Waves 1 ft or less.
.TONIGHT...SE winds 5 to 10 kt. Waves 1 ft.
.FRI...SE winds 5 to 10 kt. Waves 1 ft or less.
.FRI NIGHT...S winds 10 kt. Waves 1 ft. Showers likely.
.SAT...SW winds 10 kt. Waves 1 ft. Showers with a chance of tstms.
.SAT NIGHT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A
chance of showers and tstms.
.SUN...NW winds 10 to 15 kt...becoming N 5 kt after midnight. Waves
1 to 2 ft.
.MON...NE winds 5 kt...becoming S. Waves 1 ft.

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

$$

ANZ530-242000-
Chesapeake Bay north of Pooles Island-
1035 AM EDT Thu Apr 24 2025

.REST OF TODAY...SW winds 5 to 10 kt. Waves 1 ft.
.TONIGHT...S winds 5 to 10 kt. Waves 1 ft or less.
.FRI...S winds 5 to 10 kt. Waves 1 ft or less.
.FRI NIGHT...S winds 5 to 10 kt. Waves 1 ft. Showers likely.
.SAT...SW winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft. Showers
with a chance of tstms.
.SAT NIGHT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.SUN...NW winds 10 to 15 kt...becoming N 5 kt after midnight. Waves
1 ft or less.
.MON...SW winds 5 kt. Waves less than 1 ft.

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

$$

ANZ531-242000-
Chesapeake Bay from Pooles Island to Sandy Point-
1035 AM EDT Thu Apr 24 2025

.REST OF TODAY...S winds 5 to 10 kt. Waves 1 ft or less... building
to 2 ft late.
.TONIGHT...S winds 5 to 10 kt. Waves 1 to 2 ft.
.FRI...S winds 5 to 10 kt. Waves 1 ft or less.
.FRI NIGHT...S winds 10 kt. Waves 1 ft. Showers likely.
.SAT...SW winds 10 to 15 kt. Waves 1 ft. Showers with a chance of
tstms.
.SAT NIGHT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SUN...NW winds 10 to 15 kt...becoming N 5 kt after midnight. Waves
1 to 2 ft.
.MON...W winds 5 kt...becoming S. Waves 1 ft or less.

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

$$

ANZ538-242000-
Patapsco River including Baltimore Harbor-
1035 AM EDT Thu Apr 24 2025

.REST OF TODAY...SE winds 5 to 10 kt. Waves 1 ft or less.
.TONIGHT...S winds 5 to 10 kt until early morning...becoming light.
Waves 1 ft or less.
.FRI...S winds 5 to 10 kt. Waves 1 ft or less.
.FRI NIGHT...S winds 5 to 10 kt. Waves 1 ft. Showers likely.
.SAT...SW winds 5 to 10 kt. Waves 1 ft. Showers with a chance of
tstms.
.SAT NIGHT...NW winds 10 kt. Waves 1 ft.
.SUN...NW winds 5 to 10 kt. Waves 1 ft or less.
.MON...SE winds 5 kt. Waves less than 1 ft.

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

$$

ANZ539-242000-
Chester River to Queenstown MD-
1035 AM EDT Thu Apr 24 2025

.REST OF TODAY...S winds 5 to 10 kt. Waves 1 ft or less.
.TONIGHT...S winds 5 to 10 kt. Waves 1 ft.
.FRI...S winds 5 to 10 kt. Waves 1 ft or less.
.FRI NIGHT...S winds 5 to 10 kt. Waves 1 ft. Showers likely.
.SAT...SW winds 10 kt. Waves 1 ft. Showers with a chance of tstms.
.SAT NIGHT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SUN...NW winds 10 to 15 kt...becoming N 5 kt after midnight. Waves
1 to 2 ft.
.MON...W winds 5 kt...becoming S. Waves 1 ft or less.

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

$$

ANZ532-242000-
Chesapeake Bay from Sandy Point to North Beach-
1035 AM EDT Thu Apr 24 2025

.REST OF TODAY...S winds 5 to 10 kt. Waves 1 ft or less... building
to 2 ft late.
.TONIGHT...S winds 5 to 10 kt. Waves 1 to 2 ft.
.FRI...S winds 5 to 10 kt. Waves 1 ft or less.
.FRI NIGHT...S winds 10 kt. Waves 2 ft. Showers likely.
.SAT...SW winds 10 kt. Waves 1 to 2 ft. Showers with a chance of
tstms.
.SAT NIGHT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SUN...NW winds 10 to 15 kt...becoming N 5 kt after midnight. Waves
1 to 2 ft.
.MON...E winds 5 kt...becoming S. Waves 1 ft.

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

$$

ANZ540-242000-
Eastern Bay-
1035 AM EDT Thu Apr 24 2025

.REST OF TODAY...S winds 5 to 10 kt. Waves 1 ft or less.
.TONIGHT...S winds 5 to 10 kt. Waves 1 ft.
.FRI...S winds 5 to 10 kt. Waves 1 ft or less.
.FRI NIGHT...S winds 5 to 10 kt. Waves 1 ft. Showers likely.
.SAT...SW winds 10 kt. Waves 1 ft. Showers with a chance of tstms.
.SAT NIGHT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft.
.SUN...NW winds 10 to 15 kt...becoming N 5 kt after midnight. Waves
1 to 2 ft.
.MON...W winds 5 kt...becoming S. Waves 1 ft or less.

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

$$

ANZ533-242000-
Chesapeake Bay from North Beach to Drum Point-
1035 AM EDT Thu Apr 24 2025

.REST OF TODAY...S winds 5 to 10 kt. Waves 1 ft or less... building
to 2 ft late.
.TONIGHT...S winds 5 to 10 kt. Waves 1 to 2 ft.
.FRI...S winds 5 to 10 kt. Waves 1 ft or less.
.FRI NIGHT...S winds 10 kt. Waves 2 ft. Showers likely.
.SAT...SW winds 10 kt. Waves 1 to 2 ft. Showers with a chance of
tstms.
.SAT NIGHT...NW winds 15 to 20 kt. Waves 2 ft. A chance of showers
and tstms.
.SUN...NW winds 15 to 20 kt...becoming N 5 to 10 kt. Waves 1 to
2 ft.
.MON...N winds 5 kt...becoming S. Waves 1 ft.

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

$$

ANZ541-242000-
Choptank River to Cambridge MD and the Little Choptank River-
1035 AM EDT Thu Apr 24 2025

.REST OF TODAY...S winds 5 to 10 kt. Waves 1 ft or less.
.TONIGHT...S winds 5 to 10 kt. Waves 1 ft.
.FRI...S winds 5 to 10 kt. Waves 1 ft or less.
.FRI NIGHT...S winds 10 kt. Waves 1 ft. Showers likely.
.SAT...SW winds 10 to 15 kt. Waves 1 ft. Showers with a chance of
tstms.
.SAT NIGHT...NW winds 15 to 20 kt. Waves 2 ft. A chance of showers
and tstms.
.SUN...NW winds 15 to 20 kt...becoming N 5 to 10 kt. Waves 1 to
2 ft.
.MON...W winds 5 kt...becoming S. Waves 1 ft.

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

$$

ANZ542-242000-
Patuxent River to Broomes Island MD-
1035 AM EDT Thu Apr 24 2025

.REST OF TODAY...SE winds 5 to 10 kt. Waves 1 ft.
.TONIGHT...SE winds 5 to 10 kt until early morning... becoming
light. Waves 1 ft.
.FRI...SE winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...S winds 5 to 10 kt. Waves 1 ft. Showers likely.
.SAT...SW winds 5 to 10 kt. Waves 1 ft. Showers with a chance of
tstms.
.SAT NIGHT...NW winds 10 kt with gusts to 20 kt. Waves 1 ft. A
chance of showers and tstms.
.SUN...N winds 5 to 10 kt. Waves 1 ft.
.MON...SE winds 5 kt. Waves less than 1 ft.

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

$$

ANZ534-242000-
Chesapeake Bay from Drum Point to Smith Point-
1035 AM EDT Thu Apr 24 2025

.REST OF TODAY...SE winds 5 to 10 kt. Waves 1 ft or less.
.TONIGHT...SE winds 5 to 10 kt. Waves 1 ft.
.FRI...SE winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...S winds 10 to 15 kt. Waves 2 ft. Showers likely.
.SAT...SW winds 10 to 15 kt. Waves 2 ft. Showers with a chance of
tstms.
.SAT NIGHT...NW winds 15 to 20 kt. Waves 2 to 3 ft. A chance of
showers and tstms.
.SUN...NW winds 15 to 20 kt...becoming N 5 to 10 kt. Waves 2 to
3 ft...subsiding to 1 ft after midnight.
.MON...N winds 5 to 10 kt...becoming S. Waves 1 to 2 ft.

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

$$

ANZ543-242000-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
1035 AM EDT Thu Apr 24 2025

.REST OF TODAY...S winds 5 to 10 kt. Waves 1 ft or less.
.TONIGHT...SE winds 5 to 10 kt. Waves 1 ft.
.FRI...S winds 5 to 10 kt. Waves 1 ft or less.
.FRI NIGHT...S winds 10 to 15 kt. Waves 1 ft. A chance of showers.
.SAT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. Showers
with a chance of tstms.
.SAT NIGHT...NW winds 15 to 20 kt with gusts to 25 kt. Waves 1 to
2 ft. A chance of showers and tstms.
.SUN...NW winds 15 to 20 kt...becoming N 5 to 10 kt. Waves 1 to
2 ft.
.MON...N winds 5 to 10 kt...becoming S. Waves 1 ft.

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

$$



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