171
FZUS51 KLWX 162357
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
756 PM EDT Wed Sep 16 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.

ANZ500-170800-
756 PM EDT Wed Sep 16 2026

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

Canadian high pressure will gradually push toward the Atlantic coast
 through tonight. A slow-moving cold front across the Great Lakes
eventually crosses the waters by Friday morning. High pressure
briefly builds over the northeastern U.S. on Saturday before another
 frontal system looms nearby to finish the weekend. Small Craft
Advisories may be needed at times on Thursday due to southerly
channeling effects, and on Friday behind the cold front. Winds may
again prompt Small Craft Advisories during portions of the weekend.

$$

ANZ535-170800-
Tidal Potomac from Key Bridge to Indian Head-
756 PM EDT Wed Sep 16 2026

.TONIGHT...S winds 5 kt. Waves less than 1 ft.
.THU...S winds 5 kt. Waves less than 1 ft.
.THU NIGHT...SW winds around 5 kt. Waves 1 ft. A chance of showers.
.FRI...N winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...NE winds 5 to 10 kt. Waves 1 ft.
.SAT...E winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...SE winds 5 to 10 kt. Waves 1 ft.
.SUN...S winds 5 to 10 kt...becoming NE after midnight. Waves 1 ft.
A chance of showers in the afternoon. Showers likely through the
night.
.MON...NE winds 5 to 10 kt. Waves 1 ft. A chance of showers.

$$

ANZ536-170800-
Tidal Potomac from Indian Head to Cobb Island-
756 PM EDT Wed Sep 16 2026

.TONIGHT...S winds 5 kt. Waves less than 1 ft.
.THU...S winds 5 kt. Waves less than 1 ft.
.THU NIGHT...SW winds 5 kt. Waves less than 1 ft.
.FRI...N winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...NE winds 5 to 10 kt. Waves 1 ft.
.SAT...E winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...SE winds 5 to 10 kt. Waves 1 ft.
.SUN...S winds 5 to 10 kt...becoming NE after midnight. Waves 1 ft.
A chance of showers in the afternoon. Showers likely through the
night.
.MON...NE winds 5 to 10 kt. Waves 1 ft. A chance of showers.

$$

ANZ537-170800-
Tidal Potomac from Cobb Island to Smith Point-
756 PM EDT Wed Sep 16 2026

.TONIGHT...S winds 5 to 10 kt. Waves 1 ft.
.THU...S winds 5 to 10 kt. Waves 1 ft.
.THU NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.FRI...N winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...NE winds 5 to 10 kt. Waves 1 to 2 ft.
.SAT...E winds 5 to 10 kt. Waves 1 to 2 ft.
.SAT NIGHT...SE winds 5 to 10 kt. Waves 2 ft.
.SUN...S winds 5 to 10 kt...becoming W after midnight. Waves 1 ft. A
chance of showers in the afternoon. Showers likely through the
night.
.MON...NE winds 10 to 15 kt. Waves 1 to 2 ft. A chance of showers.

$$

ANZ530-170800-
Chesapeake Bay north of Pooles Island-
756 PM EDT Wed Sep 16 2026

.TONIGHT...S winds 5 kt. Waves less than 1 ft.
.THU...S winds 5 to 10 kt. Waves 1 ft.
.THU NIGHT...SW winds 5 to 10 kt...becoming NW late. Waves 1 ft. A
chance of showers.
.FRI...N winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...N winds 10 to 15 kt. Waves 1 ft.
.SAT...E winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...SE winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
.SUN...S winds 10 to 15 kt...becoming N after midnight. Waves 1 ft.
A chance of showers in the morning. Showers likely.
.MON...NE winds 10 to 15 kt. Waves 1 ft. A chance of showers.

$$

ANZ531-170800-
Chesapeake Bay from Pooles Island to Sandy Point-
756 PM EDT Wed Sep 16 2026

.TONIGHT...S winds 5 to 10 kt. Waves 1 ft.
.THU...S winds 5 to 10 kt. Waves 1 to 2 ft.
.THU NIGHT...S winds 5 to 10 kt...becoming W late. Waves 1 to 2 ft.
A chance of showers.
.FRI...N winds 5 to 10 kt. Waves 1 to 2 ft.
.FRI NIGHT...NE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SAT...E winds 10 to 15 kt. Waves 1 to 2 ft.
.SAT NIGHT...SE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SUN...S winds 10 to 15 kt...becoming N after midnight. Waves 2 ft.
A chance of showers in the morning. Showers likely.
.MON...NE winds 10 to 15 kt. Waves 2 ft. A chance of showers.

$$

ANZ538-170800-
Patapsco River including Baltimore Harbor-
756 PM EDT Wed Sep 16 2026

.TONIGHT...S winds 5 to 10 kt. Waves 1 ft or less.
.THU...S winds 5 to 10 kt. Waves 1 ft or less.
.THU NIGHT...SW winds 5 to 10 kt...becoming NW late. Waves 1 ft or
less. A chance of showers.
.FRI...N winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...NE winds 5 to 10 kt. Waves 1 ft.
.SAT...E winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...SE winds 5 to 10 kt. Waves 1 ft.
.SUN...S winds 10 kt...becoming N after midnight. Waves 1 ft. A
chance of showers in the morning. Showers likely.
.MON...NE winds 5 to 10 kt. Waves 1 ft. A chance of showers.

$$

ANZ539-170800-
Chester River to Queenstown MD-
756 PM EDT Wed Sep 16 2026

.TONIGHT...S winds 5 to 10 kt. Waves 1 ft.
.THU...S winds 5 to 10 kt. Waves 1 ft.
.THU NIGHT...S winds 5 to 10 kt...becoming W late. Waves 1 ft. A
chance of showers.
.FRI...N winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...NE winds 10 kt. Waves 1 ft.
.SAT...E winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...SE winds 5 to 10 kt. Waves 1 ft.
.SUN...S winds 10 to 15 kt...becoming N 5 to 10 kt after midnight.
Waves 1 to 2 ft. A chance of showers through the day. Showers likely
through the night.
.MON...NE winds 10 to 15 kt. Waves 1 ft. A chance of showers.

$$

ANZ532-170800-
Chesapeake Bay from Sandy Point to North Beach-
756 PM EDT Wed Sep 16 2026

.TONIGHT...S winds 10 kt. Waves 1 to 2 ft.
.THU...S winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Waves 1 to 2 ft.
.THU NIGHT...S winds 10 to 15 kt...becoming W 5 to 10 kt after
midnight. Waves 1 to 2 ft. A chance of showers.
.FRI...N winds 10 to 15 kt. Waves 1 to 2 ft.
.FRI NIGHT...NE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SAT...E winds 10 to 15 kt. Waves 1 to 2 ft.
.SAT NIGHT...SE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SUN...S winds 10 to 15 kt...becoming N after midnight. Waves 2 ft.
A chance of showers in the afternoon. Showers likely through the
night.
.MON...NE winds 10 to 15 kt. Waves 2 ft. A chance of showers.

$$

ANZ540-170800-
Eastern Bay-
756 PM EDT Wed Sep 16 2026

.TONIGHT...S winds 5 to 10 kt. Waves 1 ft.
.THU...S winds 5 to 10 kt. Waves 1 ft.
.THU NIGHT...S winds 5 to 10 kt...becoming W late. Waves 1 ft. A
chance of showers.
.FRI...N winds 10 to 15 kt. Waves 1 ft.
.FRI NIGHT...NE winds 10 to 15 kt. Waves 1 ft.
.SAT...E winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...SE winds 5 to 10 kt. Waves 1 ft.
.SUN...S winds 10 to 15 kt...becoming N after midnight. Waves 1 ft.
A chance of showers in the afternoon. Showers likely through the
night.
.MON...NE winds 10 to 15 kt. Waves 1 ft. A chance of showers.

$$

ANZ533-170800-
Chesapeake Bay from North Beach to Drum Point-
756 PM EDT Wed Sep 16 2026

.TONIGHT...S winds 10 kt. Waves 1 ft.
.THU...S winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Waves 1 to 2 ft.
.THU NIGHT...S winds 10 to 15 kt with gusts to 20 kt...becoming SW
5 to 10 kt after midnight. Waves 1 to 2 ft.
.FRI...N winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.FRI NIGHT...NE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SAT...E winds 10 to 15 kt. Waves 1 to 2 ft.
.SAT NIGHT...SE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SUN...S winds 10 to 15 kt...becoming NW after midnight. Waves 2 ft.
A chance of showers in the afternoon. Showers likely through the
night.
.MON...NE winds 10 to 15 kt. Waves 2 ft. A chance of showers.

$$

ANZ541-170800-
Choptank River to Cambridge MD and the Little Choptank River-
756 PM EDT Wed Sep 16 2026

.TONIGHT...S winds 10 kt. Waves 1 ft.
.THU...S winds 5 to 10 kt. Waves 1 ft.
.THU NIGHT...S winds 10 to 15 kt...becoming W 5 to 10 kt late. Waves
1 ft.
.FRI...N winds 10 to 15 kt. Waves 1 ft.
.FRI NIGHT...NE winds 10 to 15 kt. Waves 1 ft.
.SAT...NE winds 10 to 15 kt...becoming E 5 kt in the afternoon.
Waves 1 ft.
.SAT NIGHT...SE winds 10 to 15 kt. Waves 1 ft.
.SUN...S winds 10 to 15 kt...becoming N after midnight. Waves 1 to
2 ft. A chance of showers in the afternoon. Showers likely through
the night.
.MON...NE winds 10 to 15 kt. Waves 1 ft. A chance of showers.

$$

ANZ542-170800-
Patuxent River to Broomes Island MD-
756 PM EDT Wed Sep 16 2026

.TONIGHT...S winds 5 kt. Waves less than 1 ft.
.THU...S winds 5 to 10 kt. Waves 1 ft.
.THU NIGHT...SW winds 5 to 10 kt. Waves 1 ft.
.FRI...N winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...NE winds 5 to 10 kt. Waves 1 ft.
.SAT...E winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...SE winds 5 to 10 kt. Waves 1 ft.
.SUN...S winds 5 to 10 kt...becoming NW after midnight. Waves 1 ft.
A chance of showers in the afternoon. Showers likely through the
night.
.MON...NE winds 5 to 10 kt. Waves 1 ft. A chance of showers.

$$

ANZ534-170800-
Chesapeake Bay from Drum Point to Smith Point-
756 PM EDT Wed Sep 16 2026

.TONIGHT...S winds 10 kt. Waves 1 ft.
.THU...S winds 10 to 15 kt. Waves 1 to 2 ft.
.THU NIGHT...S winds 10 to 15 kt...becoming SW late. Gusts up to
20 kt. Waves 2 ft.
.FRI...NW winds 10 to 15 kt. Gusts up to 20 kt. Waves 1 to 2 ft.
.FRI NIGHT...NE winds 10 to 15 kt. Waves 2 ft.
.SAT...E winds 10 to 15 kt. Waves 1 to 2 ft.
.SAT NIGHT...SE winds 10 to 15 kt. Waves 2 ft.
.SUN...S winds 10 to 15 kt...becoming W after midnight. Waves 2 ft.
A chance of showers in the afternoon. Showers likely through the
night.
.MON...NE winds 10 to 15 kt. Waves 2 ft. A chance of showers.

$$

ANZ543-170800-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
756 PM EDT Wed Sep 16 2026

.TONIGHT...S winds 10 kt. Waves 1 ft.
.THU...S winds 5 to 10 kt. Waves 1 ft.
.THU NIGHT...S winds 10 to 15 kt...becoming SW 5 to 10 kt late.
Gusts up to 20 kt. Waves 1 to 2 ft.
.FRI...NW winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...NE winds 5 to 10 kt. Waves 1 ft.
.SAT...E winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...SE winds 10 to 15 kt. Waves 1 ft.
.SUN...S winds 10 to 15 kt...becoming W after midnight. Waves 1 to
2 ft. Showers likely through the night.
.MON...NE winds 10 to 15 kt. Waves 1 ft. A chance of showers.

$$