520
FZUS51 KLWX 152334
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
733 PM EDT Wed Oct 15 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.

ANZ500-160800-
733 PM EDT Wed Oct 15 2025

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

A prolonged period of hazardous marine conditions is expected to
continue through the end of the week in the wake of a strong cold
front. High pressure will build to the north at the end of the week
into the weekend, then another strong cold front will cross the
region Sunday into Monday. Small Craft Advisories will likely be
needed through Friday morning.

$$

ANZ535-160800-
Tidal Potomac from Key Bridge to Indian Head-
733 PM EDT Wed Oct 15 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING...
...SMALL CRAFT ADVISORY IN EFFECT FROM THURSDAY MORNING THROUGH
THURSDAY EVENING...

.TONIGHT...N winds 10 kt. Waves 1 ft.
.THU...N winds 5 to 10 kt. Gusts up to 20 kt... increasing to 25 kt
late. Waves 1 ft.
.THU NIGHT...N winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
.FRI...NW winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...NW winds around 5 kt. Waves 1 ft or less.
.SAT...SW winds around 5 kt. Waves 1 ft or less.
.SAT NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.SUN...S winds 10 to 15 kt...becoming SW after midnight. Waves 1 to
2 ft. Showers likely through the night.
.MON...W winds 10 to 15 kt. Waves 1 ft. Showers likely, mainly in
the morning.

$$

ANZ536-160800-
Tidal Potomac from Indian Head to Cobb Island-
733 PM EDT Wed Oct 15 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING...
...SMALL CRAFT ADVISORY IN EFFECT FROM THURSDAY MORNING THROUGH
THURSDAY EVENING...

.TONIGHT...N winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.THU...N winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.THU NIGHT...N winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.FRI...N winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...NW winds around 5 kt. Waves 1 ft.
.SAT...SW winds around 5 kt. Waves 1 ft.
.SAT NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.SUN...S winds 15 to 20 kt. Waves 1 to 2 ft. Showers likely through
the night.
.MON...W winds 10 to 15 kt. Waves 1 ft. Showers likely, mainly in
the morning.

$$

ANZ537-160800-
Tidal Potomac from Cobb Island to Smith Point-
733 PM EDT Wed Oct 15 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THURSDAY NIGHT...

.TONIGHT...N winds 15 to 20 kt with gusts to 25 kt. Waves 2 to 3 ft.
.THU...N winds 15 to 20 kt with gusts to 25 kt. Waves 2 to 3 ft.
.THU NIGHT...N winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.
.FRI...N winds 10 to 15 kt. Gusts up to 25 kt in the morning. Waves
2 ft.
.FRI NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.SAT...SW winds around 5 kt. Waves 1 ft or less.
.SAT NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.SUN...S winds 15 to 20 kt. Waves 2 ft. Showers likely through the
night.
.MON...W winds 10 to 15 kt. Waves 1 to 2 ft. Showers likely, mainly
in the morning.

$$

ANZ530-160800-
Chesapeake Bay north of Pooles Island-
733 PM EDT Wed Oct 15 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THURSDAY NIGHT...

.TONIGHT...N winds 15 kt with gusts to 20 kt. Waves 1 ft.
.THU...N winds 10 to 15 kt with gusts to 25 kt. Waves 1 to 2 ft.
.THU NIGHT...N winds 10 to 15 kt with gusts to 25 kt. Waves 1 to
2 ft.
.FRI...N winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
.FRI NIGHT...N winds 5 to 10 kt. Waves 1 ft or less.
.SAT...W winds around 5 kt. Waves flat.
.SAT NIGHT...S winds 5 to 10 kt. Waves 1 ft or less.
.SUN...S winds 15 to 20 kt...becoming SW after midnight. Waves 1 to
2 ft. Showers likely through the night.
.MON...W winds 10 to 15 kt. Waves 1 ft. Showers likely, mainly in
the morning.

$$

ANZ531-160800-
Chesapeake Bay from Pooles Island to Sandy Point-
733 PM EDT Wed Oct 15 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THURSDAY NIGHT...

.TONIGHT...N winds 15 to 20 kt with gusts to 25 kt. Waves 2 to 3 ft.
.THU...N winds 15 to 20 kt with gusts to 25 kt. Waves 2 to 3 ft.
.THU NIGHT...N winds 15 to 20 kt with gusts to 25 kt. Waves 2 to
3 ft.
.FRI...N winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.FRI NIGHT...N winds 5 to 10 kt. Waves 1 ft.
.SAT...E winds around 5 kt. Waves 1 ft or less.
.SAT NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.SUN...S winds 20 to 25 kt...becoming SW 15 to 20 kt after midnight.
Waves 2 to 3 ft. Showers likely through the night.
.MON...W winds 15 to 20 kt. Waves 2 ft. Showers likely in the
morning, then a chance of showers through the night.

$$

ANZ538-160800-
Patapsco River including Baltimore Harbor-
733 PM EDT Wed Oct 15 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THURSDAY NIGHT...

.TONIGHT...N winds 10 kt with gusts to 20 kt. Waves 1 ft.
.THU...N winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.THU NIGHT...N winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.FRI...N winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
.FRI NIGHT...N winds 5 kt. Waves less than 1 ft.
.SAT...E winds around 5 kt. Waves flat.
.SAT NIGHT...S winds 5 to 10 kt. Waves 1 ft or less.
.SUN...S winds 10 to 15 kt...becoming SW after midnight. Waves 1 to
2 ft. Showers likely through the night.
.MON...W winds 10 to 15 kt. Waves 1 ft. Showers likely in the
morning, then a chance of showers through the night.

$$

ANZ539-160800-
Chester River to Queenstown MD-
733 PM EDT Wed Oct 15 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THURSDAY NIGHT...

.TONIGHT...N winds 15 kt with gusts to 25 kt. Waves 2 ft.
.THU...N winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft.
.THU NIGHT...N winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft.
.FRI...N winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.FRI NIGHT...N winds around 5 kt. Waves 1 ft.
.SAT...E winds around 5 kt. Waves flat.
.SAT NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.SUN...S winds 15 to 20 kt...becoming SW after midnight. Waves 1 to
2 ft. Showers likely through the night.
.MON...W winds 10 to 15 kt. Waves 2 ft. Showers likely in the
morning, then a chance of showers through the night.

$$

ANZ532-160800-
Chesapeake Bay from Sandy Point to North Beach-
733 PM EDT Wed Oct 15 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THURSDAY NIGHT...

.TONIGHT...N winds 15 to 20 kt with gusts to 25 kt. Waves 2 to 3 ft.
.THU...N winds 15 to 20 kt with gusts to 25 kt. Waves 2 to 3 ft.
.THU NIGHT...N winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.
.FRI...N winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.FRI NIGHT...N winds 5 to 10 kt. Waves 1 ft.
.SAT...SW winds 5 kt. Waves less than 1 ft.
.SAT NIGHT...S winds 10 to 15 kt. Waves 1 to 2 ft.
.SUN...S winds 20 to 25 kt...becoming SW 15 to 20 kt after midnight.
Waves 2 ft...building to 4 ft. Showers likely through the night.
.MON...W winds 15 to 20 kt. Waves 2 ft. Showers likely in the
morning, then a chance of showers through the night.

$$

ANZ540-160800-
Eastern Bay-
733 PM EDT Wed Oct 15 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THURSDAY NIGHT...

.TONIGHT...N winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.THU...N winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft.
.THU NIGHT...N winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft.
.FRI...N winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.FRI NIGHT...N winds 5 to 10 kt. Waves 1 ft or less.
.SAT...W winds around 5 kt. Waves flat.
.SAT NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.SUN...S winds 15 to 20 kt...becoming SW after midnight. Waves 1 to
2 ft. Showers likely through the night.
.MON...W winds 10 to 15 kt. Waves 1 to 2 ft. Showers likely in the
morning, then a chance of showers through the night.

$$

ANZ533-160800-
Chesapeake Bay from North Beach to Drum Point-
733 PM EDT Wed Oct 15 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THURSDAY NIGHT...

.TONIGHT...N winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.
.THU...N winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.
.THU NIGHT...N winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.
.FRI...N winds 10 to 15 kt with gusts to 20 kt. Waves 2 to 3 ft.
.FRI NIGHT...N winds 5 to 10 kt. Waves 1 ft.
.SAT...SW winds 5 kt. Waves less than 1 ft.
.SAT NIGHT...S winds 10 to 15 kt. Waves 1 to 2 ft.
.SUN...S winds 10 to 15 kt...becoming SW 20 to 25 kt. Waves 2 ft...
building to 3 ft. Showers likely through the night.
.MON...W winds 15 to 20 kt. Waves 2 to 3 ft. Showers likely, mainly
in the morning.

$$

ANZ541-160800-
Choptank River to Cambridge MD and the Little Choptank River-
733 PM EDT Wed Oct 15 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THURSDAY NIGHT...

.TONIGHT...N winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.THU...N winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.THU NIGHT...N winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.FRI...N winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.FRI NIGHT...N winds 5 to 10 kt. Waves 1 ft.
.SAT...W winds 5 kt. Waves flat.
.SAT NIGHT...S winds 10 to 15 kt. Waves 1 ft.
.SUN...S winds 15 to 20 kt. Waves 2 ft. Showers likely through the
night.
.MON...W winds 10 to 15 kt. Waves 2 ft. Showers likely in the
morning, then a chance of showers through the night.

$$

ANZ542-160800-
Patuxent River to Broomes Island MD-
733 PM EDT Wed Oct 15 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THURSDAY NIGHT...

.TONIGHT...N winds 10 to 15 kt with gusts to 25 kt. Waves 1 ft.
.THU...N winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.THU NIGHT...N winds 10 to 15 kt with gusts to 25 kt. Waves 1 ft.
.FRI...N winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
.FRI NIGHT...NW winds 5 kt. Waves less than 1 ft.
.SAT...SW winds 5 kt. Waves less than 1 ft.
.SAT NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.SUN...S winds 10 to 15 kt. Waves 1 ft. Showers likely through the
night.
.MON...W winds 10 to 15 kt. Waves 1 ft. Showers likely, mainly in
the morning.

$$

ANZ534-160800-
Chesapeake Bay from Drum Point to Smith Point-
733 PM EDT Wed Oct 15 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THURSDAY NIGHT...

.TONIGHT...N winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.
.THU...N winds 15 to 20 kt with gusts to 25 kt. Waves 4 ft.
.THU NIGHT...N winds 20 to 25 kt with gusts to 30 kt. Waves 4 ft.
.FRI...N winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.
.FRI NIGHT...N winds 5 to 10 kt. Waves 1 to 2 ft.
.SAT...W winds 5 kt. Waves less than 1 ft.
.SAT NIGHT...S winds 10 to 15 kt. Waves 1 to 2 ft.
.SUN...S winds 20 to 25 kt. Waves 3 ft. Showers likely through the
night.
.MON...W winds 15 to 20 kt. Waves 2 to 3 ft. Showers likely, mainly
in the morning.

$$

ANZ543-160800-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
733 PM EDT Wed Oct 15 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THURSDAY NIGHT...

.TONIGHT...N winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.THU...N winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.THU NIGHT...N winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft.
.FRI...N winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.FRI NIGHT...N winds 10 to 15 kt. Waves 1 ft.
.SAT...W winds 5 kt. Waves less than 1 ft.
.SAT NIGHT...S winds 10 to 15 kt. Waves 1 ft.
.SUN...S winds 20 to 25 kt. Waves 2 to 3 ft. Showers likely through
the night.
.MON...W winds 15 to 20 kt. Waves 2 ft. Showers likely, mainly in
the morning.

$$