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FZUS51 KLWX 192057
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
457 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-
457 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-
457 PM EDT Sat Sep 19 2026

.REST OF THIS AFTERNOON...SE winds 5 kt. Waves less than 1 ft.
.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 after midnight. 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 to 15 kt. Waves 1 ft. A chance of showers.
.WED...NE 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-
457 PM EDT Sat Sep 19 2026

.REST OF THIS AFTERNOON...E winds 5 kt. Waves less than 1 ft.
.TONIGHT...SE winds 5 to 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...increasing to 15 to 20 kt. Waves 1 to 2 ft.
A chance of showers.
.WED...NE winds 15 to 20 kt. Waves 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-
457 PM EDT Sat Sep 19 2026

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

.REST OF THIS AFTERNOON...E winds 10 kt. Waves 1 ft.
.TONIGHT...SE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SUN...S winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...SW winds 5 to 10 kt. 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 20 to 25 kt. Waves 2 to 3 ft... building to 4 ft. A
chance of showers.
.WED...NE winds 25 to 30 kt. Waves 4 ft. A chance of showers.

$$

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

.REST OF THIS AFTERNOON...E winds 5 kt. Waves less than 1 ft.
.TONIGHT...SE winds 5 to 10 kt. Waves 1 ft.
.SUN...S winds 10 to 15 kt...becoming SW late. Gusts up to 20 kt.
Waves 1 ft. A chance of showers.
.SUN NIGHT...SW winds 5 to 10 kt...becoming N after midnight. 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 to 15 kt with gusts to 20 kt. Waves 1 ft. A
chance of showers.
.TUE...NE winds 15 to 20 kt. Waves 2 ft. A chance of showers.
.WED...NE winds 15 to 20 kt. Waves 2 ft. A chance of showers.

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

$$

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

.REST OF THIS AFTERNOON...E winds 5 kt. Waves less than 1 ft.
.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. A chance
of showers.
.SUN NIGHT...SW winds 5 to 10 kt...becoming NW 10 to 15 kt 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 kt...increasing to 20 to 25 kt. Waves 2 to 3 ft.
A chance of showers.
.WED...NE winds 20 to 25 kt. Waves 3 ft. A chance of showers.

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

$$

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

.REST OF THIS AFTERNOON...E winds 5 kt. Waves less than 1 ft.
.TONIGHT...SE winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.SUN...S winds 10 kt. Waves 1 ft. A chance of showers.
.SUN NIGHT...SW winds 5 to 10 kt...becoming N after midnight. Waves
1 ft. Showers likely with a chance of tstms.
.MON...NE winds 10 kt. Waves 1 ft. A chance of showers.
.MON NIGHT...NE winds 10 to 15 kt. Waves 1 ft. A chance of showers.
.TUE...NE winds 15 to 20 kt. Waves 1 to 2 ft. A chance of showers.
.WED...NE winds 15 to 20 kt. Waves 2 ft. A chance of showers.

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

$$

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

.REST OF THIS AFTERNOON...E winds 5 kt. Waves less than 1 ft.
.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 10 to 15 kt 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 to 2 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. Waves 2 ft. A chance of showers.
.WED...NE winds 15 to 20 kt. Waves 2 to 3 ft. A chance of showers.

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

$$

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

.REST OF THIS AFTERNOON...E winds 5 kt. Waves less than 1 ft.
.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. A chance
of showers.
.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 20 to 25 kt. Waves 3 ft. A chance of showers.
.WED...NE winds 20 to 25 kt. Waves 3 ft. A chance of showers.

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

$$

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

.REST OF THIS AFTERNOON...E winds 5 kt. Waves less than 1 ft.
.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 to 2 ft. A
chance of showers.
.SUN NIGHT...S winds 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. Waves 2 ft. A chance of showers.
.WED...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-
457 PM EDT Sat Sep 19 2026

.REST OF THIS AFTERNOON...E winds 5 kt. Waves less than 1 ft.
.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 5 to 10 kt...becoming W after midnight. 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 20 to 25 kt. Waves 3 ft. A chance of showers.
.WED...NE 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-
457 PM EDT Sat Sep 19 2026

.REST OF THIS AFTERNOON...E winds 10 kt. Waves 1 ft.
.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...S winds 10 kt...becoming W after midnight. Waves 1 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 20 to 25 kt. Waves 2 to 3 ft. A chance of showers.
.WED...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-
457 PM EDT Sat Sep 19 2026

.REST OF THIS AFTERNOON...E winds 5 kt. Waves less than 1 ft.
.TONIGHT...SE winds 5 to 10 kt. Waves 1 ft.
.SUN...S winds 10 kt. Waves 1 ft.
.SUN NIGHT...SW winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.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. Waves 1 ft. A chance of showers.
.WED...NE winds 15 to 20 kt. Waves 1 ft. A chance of showers.

$$

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

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

.REST OF THIS AFTERNOON...SE winds 10 kt. Waves 1 ft.
.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...becoming W 5 to 10 kt after
midnight. Gusts up to 20 kt. 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 20 to 25 kt. Waves 3 ft. A chance of showers.
.WED...NE winds 25 to 30 kt. Waves 5 ft. A chance of showers.

$$

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

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

.REST OF THIS AFTERNOON...E winds 10 kt. Waves 1 ft.
.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...becoming W 5 to 10 kt after
midnight. Gusts up to 20 kt. Waves 1 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 20 to 25 kt. Waves 2 to 3 ft. A chance of showers.
.WED...NE winds 20 to 25 kt. Waves 3 ft. A chance of showers.

$$