553
FZUS51 KLWX 291129
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
729 AM EDT Tue Sep 29 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.

ANZ500-292000-
729 AM EDT Tue Sep 29 2026

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

Weak high pressure will build into the area through Wednesday before
 moving eastward Thursday. A cold front will approach the area
Friday. Small Craft Advisories may be needed for portions of the
waters Thursday night and Friday night into Saturday.

$$

ANZ535-292000-
Tidal Potomac from Key Bridge to Indian Head-
729 AM EDT Tue Sep 29 2026

.TODAY...NW winds around 5 kt. Waves 1 ft.
.TONIGHT...Light winds. Waves flat.
.WED...SW winds around 5 kt. Waves 1 ft or less.
.WED NIGHT...S winds 5 kt. Waves less than 1 ft.
.THU...SW winds 5 kt. Waves less than 1 ft.
.THU NIGHT...S winds 5 kt. Waves less than 1 ft.
.FRI...SW winds 5 kt...becoming N after midnight. Waves 1 ft.
.SAT...NE winds 5 to 10 kt. Waves 1 ft. A chance of showers in the
afternoon. Showers likely through the night.

$$

ANZ536-292000-
Tidal Potomac from Indian Head to Cobb Island-
729 AM EDT Tue Sep 29 2026

.TODAY...NW winds 5 kt. Waves less than 1 ft.
.TONIGHT...SW winds around 5 kt. Waves flat.
.WED...SW winds around 5 kt. Waves 1 ft or less.
.WED NIGHT...S winds 5 kt. Waves less than 1 ft.
.THU...SW winds 5 kt. Waves less than 1 ft.
.THU NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.FRI...SW winds 5 to 10 kt...becoming NW after midnight. Waves 1 ft.
.SAT...NE winds 5 to 10 kt. Waves 1 ft. A chance of showers in the
afternoon. Showers likely through the night.

$$

ANZ537-292000-
Tidal Potomac from Cobb Island to Smith Point-
729 AM EDT Tue Sep 29 2026

.TODAY...NW winds 5 kt. Waves flat.
.TONIGHT...SW winds around 5 kt. Waves flat.
.WED...SW winds around 5 kt...becoming SE late. Waves 1 ft or less.
.WED NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.THU...SW winds 5 to 10 kt. Waves 1 ft.
.THU NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.FRI...SW winds 5 to 10 kt. Waves 1 ft.
.SAT...NE winds 5 to 10 kt. Waves 1 to 2 ft. A chance of showers
through the night. Showers likely after midnight.

$$

ANZ530-292000-
Chesapeake Bay north of Pooles Island-
729 AM EDT Tue Sep 29 2026

.TODAY...NW winds 5 kt. Waves less than 1 ft.
.TONIGHT...NW winds around 5 kt. Waves 1 ft or less.
.WED...S winds around 5 kt. Waves 1 ft or less.
.WED NIGHT...S winds around 5 kt. Waves 1 ft.
.THU...SW winds 5 kt. Waves less than 1 ft.
.THU NIGHT...SW winds 5 to 10 kt. Waves 1 ft.
.FRI...SW winds 5 to 10 kt...becoming N after midnight. Waves 1 ft.
.SAT...NE winds 5 to 10 kt. Waves 1 ft. A chance of showers through
the night. Showers likely after midnight.

$$

ANZ531-292000-
Chesapeake Bay from Pooles Island to Sandy Point-
729 AM EDT Tue Sep 29 2026

.TODAY...W winds 5 kt. Waves flat.
.TONIGHT...W winds around 5 kt. Waves flat.
.WED...SE winds around 5 kt. Waves 1 ft or less.
.WED NIGHT...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...SW winds 5 to 10 kt...becoming N after midnight. Waves 1 ft.
.SAT...NE winds 10 to 15 kt...becoming E. Waves 1 to 2 ft. A chance
of showers through the night. Showers likely after midnight.

$$

ANZ538-292000-
Patapsco River including Baltimore Harbor-
729 AM EDT Tue Sep 29 2026

.TODAY...W winds 5 kt. Waves flat.
.TONIGHT...Light winds. Waves flat.
.WED...SE winds around 5 kt. Waves 1 ft or less.
.WED NIGHT...S winds 5 kt. Waves less than 1 ft.
.THU...SW winds 5 kt. Waves less than 1 ft.
.THU NIGHT...SW winds 5 kt. Waves less than 1 ft.
.FRI...SW winds 5 to 10 kt...becoming N after midnight. Waves 1 ft
or less.
.SAT...NE winds 5 to 10 kt. Waves 1 ft. A chance of showers through
the night. Showers likely after midnight.

$$

ANZ539-292000-
Chester River to Queenstown MD-
729 AM EDT Tue Sep 29 2026

.TODAY...NW winds 5 kt. Waves flat.
.TONIGHT...Light winds. Waves flat.
.WED...S winds around 5 kt. Waves flat.
.WED NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.THU...S winds 5 kt. Waves less than 1 ft.
.THU NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.FRI...SW winds 5 kt...becoming N after midnight. Waves 1 ft.
.SAT...NE winds 5 to 10 kt. Waves 1 ft. A chance of showers through
the night. Showers likely after midnight.

$$

ANZ532-292000-
Chesapeake Bay from Sandy Point to North Beach-
729 AM EDT Tue Sep 29 2026

.TODAY...W winds 5 kt. Waves flat.
.TONIGHT...W winds around 5 kt. Waves flat.
.WED...SW winds around 5 kt...becoming SE late. Waves 1 ft or less.
.WED NIGHT...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...SW winds 5 to 10 kt...becoming N after midnight. Waves 1 ft.
.SAT...NE winds 10 to 15 kt...becoming E. Waves 1 to 2 ft. A chance
of showers through the night. Showers likely after midnight.

$$

ANZ540-292000-
Eastern Bay-
729 AM EDT Tue Sep 29 2026

.TODAY...NW winds 5 kt. Waves flat.
.TONIGHT...W winds around 5 kt. Waves flat.
.WED...SW winds around 5 kt. Waves flat.
.WED NIGHT...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...SW winds 5 to 10 kt...becoming N after midnight. Waves 1 ft.
.SAT...NE winds 5 to 10 kt. Waves 1 ft. A chance of showers through
the night. Showers likely after midnight.

$$

ANZ533-292000-
Chesapeake Bay from North Beach to Drum Point-
729 AM EDT Tue Sep 29 2026

.TODAY...NW winds around 5 kt. Waves 1 ft or less.
.TONIGHT...W winds around 5 kt. Waves flat.
.WED...SW winds around 5 kt...becoming SE late. Waves 1 ft or less.
.WED NIGHT...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...SW winds 5 to 10 kt...becoming NW 10 to 15 kt after midnight.
Waves 1 to 2 ft.
.SAT...NE winds 10 to 15 kt...becoming E. Waves 1 to 2 ft. A chance
of showers through the night. Showers likely after midnight.

$$

ANZ541-292000-
Choptank River to Cambridge MD and the Little Choptank River-
729 AM EDT Tue Sep 29 2026

.TODAY...NW winds 5 kt. Waves less than 1 ft.
.TONIGHT...W winds around 5 kt. Waves flat.
.WED...SW winds around 5 kt. Waves 1 ft or less.
.WED NIGHT...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...SW winds 5 to 10 kt...becoming NW 10 to 15 kt after midnight.
Waves 1 ft.
.SAT...NE winds 10 to 15 kt...becoming E 5 to 10 kt. Waves 1 ft. A
chance of showers through the night. Showers likely after midnight.

$$

ANZ542-292000-
Patuxent River to Broomes Island MD-
729 AM EDT Tue Sep 29 2026

.TODAY...NW winds 5 kt. Waves less than 1 ft.
.TONIGHT...SW winds around 5 kt. Waves 1 ft or less.
.WED...SW winds around 5 kt. Waves 1 ft or less.
.WED NIGHT...S winds 5 kt. Waves less than 1 ft.
.THU...SW winds 5 kt. Waves less than 1 ft.
.THU NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.FRI...SW winds 5 to 10 kt...becoming NW after midnight. Waves 1 ft.
.SAT...NE winds 5 to 10 kt. Waves 1 ft. A chance of showers through
the night. Showers likely after midnight.

$$

ANZ534-292000-
Chesapeake Bay from Drum Point to Smith Point-
729 AM EDT Tue Sep 29 2026

.TODAY...NW winds 5 kt. Waves less than 1 ft.
.TONIGHT...W winds around 5 kt. Waves flat.
.WED...SW winds around 5 kt...becoming SE late. Waves 1 ft or less.
.WED NIGHT...S winds 5 to 10 kt. Waves 2 ft.
.THU...S winds 5 to 10 kt. Waves 1 to 2 ft.
.THU NIGHT...S winds 10 to 15 kt. Waves 2 ft.
.FRI...SW winds 5 to 10 kt. Waves 1 to 2 ft.
.SAT...NE winds 10 to 15 kt...becoming E after midnight. Waves 1 to
2 ft. A chance of showers.

$$

ANZ543-292000-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
729 AM EDT Tue Sep 29 2026

.TODAY...NW winds 5 kt. Waves less than 1 ft.
.TONIGHT...W winds around 5 kt. Waves flat.
.WED...SW winds around 5 kt. Waves 1 ft or less.
.WED NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.THU...S winds 10 kt. Waves 1 ft.
.THU NIGHT...S winds 10 to 15 kt. Waves 2 ft.
.FRI...SW winds 5 to 10 kt. Waves 1 ft.
.SAT...NE winds 10 to 15 kt...becoming E after midnight. Waves 1 ft.
A chance of showers through the night.

$$