728
FZUS51 KLWX 192358
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
757 PM EDT Sat Sep 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.

ANZ500-200800-
757 PM EDT Sat Sep 19 2026

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

High pressure briefly will build over the northeastern U.S. on
Saturday before a frontal system looms nearby on Sunday and into
early next week. Wind gusts remain elevated at times Saturday night
through Wednesday, which may prompt Small Craft Advisories.

$$

ANZ535-200800-
Tidal Potomac from Key Bridge to Indian Head-
757 PM EDT Sat Sep 19 2026

.TONIGHT...SE winds 5 to 10 kt. Waves 1 ft.
.SUN...S winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.SUN NIGHT...SW winds 5 kt...becoming N late. Waves 1 ft. Showers
likely with a chance of tstms.
.MON...NE winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.MON NIGHT...NE winds 10 kt. Waves 1 ft. A chance of showers.
.TUE...NE winds 10 kt. Waves 1 ft. A chance of showers.
.TUE NIGHT...NE winds 10 to 15 kt with gusts to 25 kt. Waves 1 ft. A
chance of showers.
.WED...NE winds 10 to 15 kt. Waves 1 ft. A chance of showers.
.THU...N winds 10 to 15 kt. Waves 1 ft. A chance of showers.

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

$$

ANZ536-200800-
Tidal Potomac from Indian Head to Cobb Island-
757 PM EDT Sat Sep 19 2026

.TONIGHT...SE winds 10 kt. Waves 1 ft.
.SUN...S winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...W winds 5 kt. Waves less than 1 ft. A chance of showers
and tstms.
.MON...NE winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.MON NIGHT...NE winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.TUE...NE winds 10 kt. Waves 1 ft. A chance of showers.
.TUE NIGHT...NE winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft. A
chance of showers.
.WED...NE winds 15 to 20 kt. Waves 2 ft. A chance of showers.
.THU...N winds 15 to 20 kt. Waves 1 to 2 ft. A chance of showers.

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

$$

ANZ537-200800-
Tidal Potomac from Cobb Island to Smith Point-
757 PM EDT Sat Sep 19 2026

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EDT SUNDAY...

.TONIGHT...SE winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft.
.SUN...S winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...S winds 5 to 10 kt...becoming W late. Waves 1 ft.
.MON...N winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft. A
chance of showers.
.MON NIGHT...NE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A
chance of showers.
.TUE...NE winds 15 to 20 kt with gusts to 25 kt. Waves 2 to 3 ft. A
chance of showers.
.TUE NIGHT...NE winds 20 to 25 kt with gusts to 30 kt. Waves 4 ft. A
chance of showers.
.WED...NE winds 25 to 30 kt. Waves 4 ft. A chance of showers.
.THU...N winds 20 to 25 kt. Waves 4 ft. A chance of showers.

$$

ANZ530-200800-
Chesapeake Bay north of Pooles Island-
757 PM EDT Sat Sep 19 2026

.TONIGHT...SE winds 10 kt. Waves 1 ft.
.SUN...S winds 10 to 15 kt...becoming SW late. Gusts up to 20 kt.
Waves 1 ft. Showers likely.
.SUN NIGHT...SW winds 5 to 10 kt...becoming N after midnight. Waves
1 ft. Showers likely.
.MON...NE winds 10 kt. Waves 1 ft.
.MON NIGHT...NE winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. A
chance of showers.
.TUE...NE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A
chance of showers.
.TUE NIGHT...NE winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft. A
chance of showers.
.WED...NE winds 15 to 20 kt. Waves 2 ft. A chance of showers.
.THU...NE winds 15 to 20 kt. Waves 2 ft. A chance of showers.

$$

ANZ531-200800-
Chesapeake Bay from Pooles Island to Sandy Point-
757 PM EDT Sat Sep 19 2026

.TONIGHT...SE winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft.
.SUN...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. Showers
likely.
.SUN NIGHT...SW winds 5 to 10 kt...becoming N 10 to 15 kt after
midnight. Waves 1 to 2 ft. Showers likely.
.MON...NE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.MON NIGHT...NE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A
chance of showers.
.TUE...NE winds 15 kt with gusts to 25 kt. Waves 2 to 3 ft. A chance
of showers.
.TUE NIGHT...NE winds 20 to 25 kt with gusts to 30 kt. Waves 3 ft. A
chance of showers.
.WED...NE winds 20 to 25 kt. Waves 3 ft. A chance of showers.
.THU...NE winds 20 to 25 kt. Waves 3 ft. A chance of showers.

$$

ANZ538-200800-
Patapsco River including Baltimore Harbor-
757 PM EDT Sat Sep 19 2026

.TONIGHT...SE winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.SUN...S winds 10 kt. Waves 1 ft. Showers likely.
.SUN NIGHT...SW winds 5 to 10 kt...becoming N after midnight. Waves
1 ft. Showers likely.
.MON...NE winds 10 kt. Waves 1 ft.
.MON NIGHT...NE winds 10 to 15 kt. Waves 1 ft. A chance of showers.
.TUE...NE winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. A
chance of showers.
.TUE NIGHT...NE winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft. A
chance of showers.
.WED...NE winds 15 to 20 kt. Waves 2 ft. A chance of showers.
.THU...NE winds 15 to 20 kt. Waves 1 to 2 ft. A chance of showers.

$$

ANZ539-200800-
Chester River to Queenstown MD-
757 PM EDT Sat Sep 19 2026

.TONIGHT...SE winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.SUN...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A chance
of showers.
.SUN NIGHT...SW winds 5 to 10 kt...becoming NW after midnight, then
becoming N 10 to 15 kt late. Waves 1 ft. Showers likely.
.MON...NE winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.MON NIGHT...NE winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft. A chance of showers.
.TUE...NE winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft. A
chance of showers.
.TUE NIGHT...NE winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft. A
chance of showers.
.WED...NE winds 15 to 20 kt. Waves 2 to 3 ft. A chance of showers.
.THU...NE winds 15 to 20 kt. Waves 3 ft. A chance of showers.

$$

ANZ532-200800-
Chesapeake Bay from Sandy Point to North Beach-
757 PM EDT Sat Sep 19 2026

.TONIGHT...SE winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft.
.SUN...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SUN NIGHT...SW winds 5 to 10 kt...becoming NW after midnight. Waves
1 to 2 ft. Showers likely with a chance of tstms.
.MON...NE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A
chance of showers.
.MON NIGHT...NE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A
chance of showers.
.TUE...NE winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft. A
chance of showers.
.TUE NIGHT...NE winds 20 to 25 kt with gusts to 30 kt. Waves 3 ft. A
chance of showers.
.WED...NE winds 20 to 25 kt. Waves 3 ft. A chance of showers.
.THU...NE winds 20 to 25 kt. Waves 4 ft. A chance of showers.

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

$$

ANZ540-200800-
Eastern Bay-
757 PM EDT Sat Sep 19 2026

.TONIGHT...SE winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.SUN...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A chance
of showers.
.SUN NIGHT...SW winds 5 to 10 kt...becoming NW after midnight. Waves
1 ft. Showers likely with a chance of tstms.
.MON...NE winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. A
chance of showers.
.MON NIGHT...NE winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft. A chance of showers.
.TUE...NE winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft. A
chance of showers.
.TUE NIGHT...NE winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft. A
chance of showers.
.WED...NE winds 20 to 25 kt. Waves 2 to 3 ft. A chance of showers.
.THU...NE winds 20 to 25 kt. Waves 2 to 3 ft. A chance of showers.

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

$$

ANZ533-200800-
Chesapeake Bay from North Beach to Drum Point-
757 PM EDT Sat Sep 19 2026

.TONIGHT...SE winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft.
.SUN...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SUN NIGHT...SW winds 5 to 10 kt...becoming NW late. Waves 1 to
2 ft. A chance of showers and tstms.
.MON...NE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A
chance of showers.
.MON NIGHT...NE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A
chance of showers.
.TUE...NE winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft. A
chance of showers.
.TUE NIGHT...NE winds 20 to 25 kt with gusts to 30 kt. Waves 4 ft. A
chance of showers.
.WED...NE winds 25 to 30 kt. Waves 4 ft. A chance of showers.
.THU...N winds 25 to 30 kt. Waves 4 ft. A chance of showers.

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

$$

ANZ541-200800-
Choptank River to Cambridge MD and the Little Choptank River-
757 PM EDT Sat Sep 19 2026

.TONIGHT...SE winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.SUN...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SUN NIGHT...SW winds 5 to 10 kt...becoming N late. Waves 1 ft. A
chance of showers and tstms.
.MON...NE winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft. A
chance of showers.
.MON NIGHT...NE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A
chance of showers.
.TUE...NE winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft. A
chance of showers.
.TUE NIGHT...NE winds 20 to 25 kt with gusts to 30 kt. Waves 3 ft. A
chance of showers.
.WED...NE winds 20 to 25 kt. Waves 3 ft. A chance of showers.
.THU...NE winds 20 to 25 kt. Waves 3 ft. A chance of showers.

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

$$

ANZ542-200800-
Patuxent River to Broomes Island MD-
757 PM EDT Sat Sep 19 2026

.TONIGHT...SE winds 10 kt. Waves 1 ft.
.SUN...S winds 10 kt. Waves 1 ft.
.SUN NIGHT...SW winds 5 to 10 kt...becoming NW late. Waves 1 ft. A
chance of showers and tstms.
.MON...NE winds 10 kt. Waves 1 ft. A chance of showers.
.MON NIGHT...NE winds 10 kt. Waves 1 ft. A chance of showers.
.TUE...NE winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. A
chance of showers.
.TUE NIGHT...NE winds 15 kt with gusts to 25 kt. Waves 1 ft. A
chance of showers.
.WED...NE winds 15 to 20 kt. Waves 1 ft. A chance of showers.
.THU...N winds 15 to 20 kt. Waves 1 ft. A chance of showers.

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

$$

ANZ534-200800-
Chesapeake Bay from Drum Point to Smith Point-
757 PM EDT Sat Sep 19 2026

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EDT SUNDAY...

.TONIGHT...SE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SUN...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SUN NIGHT...S winds 10 to 15 kt with gusts to 20 kt... becoming W
5 to 10 kt after midnight. Waves 2 ft.
.MON...N winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A chance
of showers.
.MON NIGHT...NE winds 10 to 15 kt with gusts to 20 kt. Waves 2 to
3 ft. A chance of showers.
.TUE...NE winds 15 to 20 kt. Gusts up to 20 kt... increasing to
30 kt in the afternoon. Waves 3 ft. A chance of showers.
.TUE NIGHT...NE winds 20 to 25 kt with gusts to 30 kt. Waves 4 ft. A
chance of showers.
.WED...NE winds 25 to 30 kt. Waves 5 ft. A chance of showers.
.THU...N winds 25 to 30 kt. Waves 5 ft. A chance of showers.

$$

ANZ543-200800-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
757 PM EDT Sat Sep 19 2026

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EDT SUNDAY...

.TONIGHT...SE winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.SUN...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.SUN NIGHT...S winds 10 to 15 kt with gusts to 20 kt... becoming W
5 to 10 kt after midnight. Waves 1 to 2 ft.
.MON...N winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. A chance
of showers.
.MON NIGHT...NE winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft. A chance of showers.
.TUE...NE winds 15 to 20 kt. Gusts up to 20 kt... increasing to
30 kt in the afternoon. Waves 2 ft. A chance of showers.
.TUE NIGHT...NE winds 20 to 25 kt with gusts to 30 kt. Waves 2 to
3 ft. A chance of showers.
.WED...NE winds 20 to 25 kt. Waves 3 ft. A chance of showers.
.THU...N winds 25 to 30 kt. Waves 3 ft. A chance of showers.

$$