571
FZUS51 KLWX 191457
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
1057 AM 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.

ANZ500-192000-
1057 AM 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.

$$

ANZ535-192000-
Tidal Potomac from Key Bridge to Indian Head-
1057 AM EDT Sat Sep 19 2026

.REST OF TODAY...E winds 5 kt. Waves less than 1 ft.
.TONIGHT...SE winds 5 kt. Waves less than 1 ft.
.SUN...S winds 5 to 10 kt with gusts 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. Showers likely.
.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 to 15 kt. Waves 1 ft. A chance of showers in the
morning, then showers likely through the night. A chance of showers
after midnight.
.WED...NE winds 10 to 15 kt. Waves 1 ft. A chance of showers.

$$

ANZ536-192000-
Tidal Potomac from Indian Head to Cobb Island-
1057 AM EDT Sat Sep 19 2026

.REST OF TODAY...E winds 5 to 10 kt. Waves 1 ft.
.TONIGHT...SE winds 10 to 15 kt...becoming S 5 to 10 kt late. Waves
1 ft.
.SUN...S winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
.SUN NIGHT...SW winds 5 to 10 kt...becoming NW after midnight. Waves
1 ft. Showers likely.
.MON...NE winds 5 to 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 in
the morning, then showers likely through the night. A chance of
showers after midnight.
.WED...NE winds 15 to 20 kt. Waves 2 ft. A chance of showers.

$$

ANZ537-192000-
Tidal Potomac from Cobb Island to Smith Point-
1057 AM EDT Sat Sep 19 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM 5 PM EDT THIS AFTERNOON
THROUGH LATE TONIGHT...

.REST OF TODAY...E winds 10 kt. Waves 1 to 2 ft.
.TONIGHT...SE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SUN...S winds 10 to 15 kt...diminishing to 5 to 10 kt in the
afternoon. Waves 1 ft.
.SUN NIGHT...SW winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.MON...N winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A chance
of showers.
.MON NIGHT...NE winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft. A
chance of showers.
.TUE...NE winds 20 to 25 kt. Waves 3 ft...building to 5 ft. A chance
of showers.
.WED...NE winds 25 to 30 kt. Waves 5 ft. A chance of showers.

$$

ANZ530-192000-
Chesapeake Bay north of Pooles Island-
1057 AM EDT Sat Sep 19 2026

.REST OF TODAY...NE winds 5 to 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. A chance
of showers.
.SUN NIGHT...SW winds 10 to 15 kt...becoming NW after midnight.
Gusts up to 20 kt. Waves 1 ft. Showers likely.
.MON...NE winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. A
chance of showers.
.MON NIGHT...NE winds 15 to 20 kt. Waves 1 to 2 ft. A chance of
showers.
.TUE...NE winds 20 to 25 kt. Waves 2 ft. A chance of showers.
.WED...NE winds 20 to 25 kt. Waves 2 ft. A chance of showers.

$$

ANZ531-192000-
Chesapeake Bay from Pooles Island to Sandy Point-
1057 AM EDT Sat Sep 19 2026

.REST OF TODAY...NE winds 10 kt. Waves 1 ft.
.TONIGHT...E winds 15 to 20 kt...becoming SE 10 to 15 kt after
midnight. Waves 2 ft.
.SUN...S winds 15 to 20 kt. Waves 2 ft. A chance of showers.
.SUN NIGHT...SW winds 10 to 15 kt...becoming NW 15 to 20 kt after
midnight. Waves 2 ft. Showers likely.
.MON...NE winds 15 to 20 kt. Waves 2 ft. A chance of showers.
.MON NIGHT...NE winds 15 to 20 kt with gusts to 25 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 20 to 25 kt. Waves 4 ft. A chance of showers.

$$

ANZ538-192000-
Patapsco River including Baltimore Harbor-
1057 AM EDT Sat Sep 19 2026

.REST OF TODAY...E winds 5 to 10 kt. Waves 1 ft or less.
.TONIGHT...E winds 10 to 15 kt...becoming SE after midnight. Gusts
up to 20 kt. Waves 1 ft.
.SUN...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. A chance
of showers.
.SUN NIGHT...SW winds 5 to 10 kt...becoming NW 10 to 15 kt after
midnight. Gusts up to 20 kt. Waves 1 ft. Showers likely.
.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 15 to 20 kt. Waves 2 ft. A chance of showers.

$$

ANZ539-192000-
Chester River to Queenstown MD-
1057 AM EDT Sat Sep 19 2026

.REST OF TODAY...NE winds 5 to 10 kt...becoming N late. Waves 1 ft
or less.
.TONIGHT...SE winds 10 to 15 kt. Gusts up 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 NW 10 to 15 kt after
midnight. Gusts up to 20 kt. Waves 1 to 2 ft. Showers likely.
.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.

$$

ANZ532-192000-
Chesapeake Bay from Sandy Point to North Beach-
1057 AM EDT Sat Sep 19 2026

.REST OF TODAY...NE winds 10 kt. Waves 1 to 2 ft.
.TONIGHT...E winds 10 to 15 kt...becoming SE in the late evening and
overnight. Gusts up to 20 kt. Waves 2 ft.
.SUN...S winds 15 to 20 kt. Waves 2 to 3 ft.
.SUN NIGHT...SW winds 10 to 15 kt...becoming NW 15 to 20 kt after
midnight. Waves 2 ft. Showers likely.
.MON...NE winds 15 to 20 kt. Waves 2 ft. A chance of showers.
.MON NIGHT...NE winds 15 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.

$$

ANZ540-192000-
Eastern Bay-
1057 AM EDT Sat Sep 19 2026

.REST OF TODAY...NE winds 5 to 10 kt. Waves 1 ft or less.
.TONIGHT...SE winds 10 to 15 kt. Gusts up 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 to 15 kt...becoming NW after midnight. Gusts
up to 20 kt. Waves 1 ft. Showers likely.
.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 15 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.

$$

ANZ533-192000-
Chesapeake Bay from North Beach to Drum Point-
1057 AM EDT Sat Sep 19 2026

.REST OF TODAY...NE winds 5 to 10 kt. Waves 1 to 2 ft.
.TONIGHT...E winds 10 to 15 kt...becoming SE in the late evening and
overnight. Gusts up 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 NW 15 to 20 kt after
midnight. Waves 2 ft. Showers likely.
.MON...NE winds 15 to 20 kt. Waves 3 ft. A chance of showers.
.MON NIGHT...NE winds 15 to 20 kt. Waves 2 to 3 ft. A chance of
showers.
.TUE...NE winds 25 to 30 kt. Waves 3 ft...building to 4 ft. A chance
of showers.
.WED...NE winds 25 to 30 kt. Waves 4 ft. A chance of showers.

$$

ANZ541-192000-
Choptank River to Cambridge MD and the Little Choptank River-
1057 AM EDT Sat Sep 19 2026

.REST OF TODAY...NE winds 5 to 10 kt...becoming N late. 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. Gusts up to 20 kt. Waves 2 ft.
.SUN NIGHT...S winds 10 to 15 kt...becoming NW 15 to 20 kt after
midnight. Waves 1 ft. Showers likely.
.MON...NE winds 15 to 20 kt. Waves 2 ft. A chance of showers.
.MON NIGHT...NE winds 15 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.

$$

ANZ542-192000-
Patuxent River to Broomes Island MD-
1057 AM EDT Sat Sep 19 2026

.REST OF TODAY...E winds 5 to 10 kt. Waves 1 ft.
.TONIGHT...SE winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
.SUN...S winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...S winds 5 kt...becoming NW after midnight. Waves 1 ft.
Showers likely.
.MON...N winds 5 to 10 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 ft. A
chance of showers.
.TUE...NE winds 15 to 20 kt. Waves 1 ft. A chance of showers.
.WED...NE winds 15 to 20 kt. Waves 1 ft. A chance of showers.

$$

ANZ534-192000-
Chesapeake Bay from Drum Point to Smith Point-
1057 AM EDT Sat Sep 19 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM 5 PM EDT THIS AFTERNOON
THROUGH LATE TONIGHT...

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

$$

ANZ543-192000-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
1057 AM EDT Sat Sep 19 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM 5 PM EDT THIS AFTERNOON
THROUGH LATE TONIGHT...

.REST OF TODAY...NE winds 10 kt...becoming SE late. Waves 1 ft. A
slight chance of showers this afternoon.
.TONIGHT...SE winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.SUN...SE winds 10 to 15 kt...becoming S in the afternoon. Waves
1 ft.
.SUN NIGHT...S winds 10 to 15 kt...becoming W after midnight. Gusts
up to 20 kt. Waves 1 to 2 ft. A chance of showers.
.MON...N winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. A chance
of showers.
.MON NIGHT...NE winds 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.

$$