887
FZUS51 KLWX 291903
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
303 PM 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.

ANZ500-300800-
303 PM EDT Tue Sep 29 2026

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

High pressure will build across the Mid-Atlantic through Wednesday,
then move offshore through the end of the week as a cold front
approaches from the west. This front will stall near the area this
weekend when a wave of low pressure may pass nearby or to the south.
 High pressure will likely return early next week. Small Craft
Advisories may be needed at times in south to southwest flow
Wednesday evening through Friday afternoon, then in northerly flow
Friday night into Saturday.

$$

ANZ535-300800-
Tidal Potomac from Key Bridge to Indian Head-
303 PM EDT Tue Sep 29 2026

.REST OF THIS AFTERNOON...W winds 5 kt. Waves less than 1 ft. A
slight chance of showers.
.TONIGHT...Light winds. Waves flat.
.WED...SW winds around 5 kt. Waves 1 ft.
.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 to 10 kt...becoming N after midnight. Waves 1 ft.
A chance of showers after midnight.
.SAT...NE winds 5 to 10 kt. Waves 1 ft. A chance of showers, then
showers likely after midnight.

$$

ANZ536-300800-
Tidal Potomac from Indian Head to Cobb Island-
303 PM EDT Tue Sep 29 2026

.REST OF THIS AFTERNOON...W winds 5 kt. Waves less than 1 ft. A
slight chance of showers.
.TONIGHT...SW winds around 5 kt. Waves flat.
.WED...SW winds around 5 kt. Waves 1 ft.
.WED NIGHT...S winds 5 to 10 kt. Waves 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 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.

$$

ANZ537-300800-
Tidal Potomac from Cobb Island to Smith Point-
303 PM EDT Tue Sep 29 2026

.REST OF THIS AFTERNOON...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...becoming NW after midnight. Waves 1 ft.
.SAT...NE winds 10 to 15 kt...diminishing to 5 to 10 kt after
midnight. Waves 1 to 2 ft. A chance of showers through the night.
Showers likely after midnight.

$$

ANZ530-300800-
Chesapeake Bay north of Pooles Island-
303 PM EDT Tue Sep 29 2026

.REST OF THIS AFTERNOON...NW winds 5 kt. Waves less than 1 ft.
.TONIGHT...NW 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 to 10 kt. Waves 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 N 10 to 15 kt after midnight.
Waves 1 ft.
.SAT...N winds 10 to 15 kt...becoming E 5 to 10 kt. Waves 1 ft. A
chance of showers after midnight.

$$

ANZ531-300800-
Chesapeake Bay from Pooles Island to Sandy Point-
303 PM EDT Tue Sep 29 2026

.REST OF THIS AFTERNOON...SW winds 5 kt. Waves flat.
.TONIGHT...W winds around 5 kt. Waves flat.
.WED...S winds around 5 kt. Waves 1 ft or less.
.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 to 10 kt...becoming N 10 to 15 kt after midnight.
Waves 1 to 2 ft.
.SAT...N winds 10 to 15 kt...becoming NE 5 to 10 kt. Waves 1 to
2 ft. A chance of showers after midnight.

$$

ANZ538-300800-
Patapsco River including Baltimore Harbor-
303 PM EDT Tue Sep 29 2026

.REST OF THIS AFTERNOON...W winds 5 kt. Waves flat. A slight chance
of showers.
.TONIGHT...Light winds. Waves flat.
.WED...S winds around 5 kt. Waves 1 ft or less.
.WED NIGHT...S winds 5 kt. Waves less than 1 ft.
.THU...S winds around 5 kt. Waves flat.
.THU NIGHT...S winds 5 kt. Waves flat.
.FRI...SW winds 5 to 10 kt...becoming N after midnight. Waves 1 ft
or less. A chance of showers after midnight.
.SAT...NE winds 5 to 10 kt. Waves 1 ft. A chance of showers in the
morning. A chance of showers after midnight.

$$

ANZ539-300800-
Chester River to Queenstown MD-
303 PM EDT Tue Sep 29 2026

.REST OF THIS AFTERNOON...W winds 5 kt. Waves flat.
.TONIGHT...Light winds. 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 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 N 10 to 15 kt after midnight.
Waves 1 to 2 ft.
.SAT...N winds 10 to 15 kt...becoming NE 5 to 10 kt. Waves 1 to
2 ft. A chance of showers.

$$

ANZ532-300800-
Chesapeake Bay from Sandy Point to North Beach-
303 PM EDT Tue Sep 29 2026

.REST OF THIS AFTERNOON...SW winds 5 kt. Waves flat.
.TONIGHT...SW winds around 5 kt. Waves flat.
.WED...SW winds around 5 kt...becoming S 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 15 to 20 kt after midnight.
Waves 1 to 2 ft.
.SAT...N winds 15 to 20 kt...becoming NE 5 to 10 kt. Waves 1 to
2 ft. A chance of showers through the night. Showers likely after
midnight.

$$

ANZ540-300800-
Eastern Bay-
303 PM EDT Tue Sep 29 2026

.REST OF THIS AFTERNOON...SW winds 5 kt. Waves flat.
.TONIGHT...SW 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 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 N 10 to 15 kt after midnight.
Waves 1 ft.
.SAT...N winds 10 to 15 kt...becoming NE 5 to 10 kt. Waves 1 ft. A
chance of showers.

$$

ANZ533-300800-
Chesapeake Bay from North Beach to Drum Point-
303 PM EDT Tue Sep 29 2026

.REST OF THIS AFTERNOON...W 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...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 15 to 20 kt after midnight.
Waves 1 to 2 ft.
.SAT...N winds 15 to 20 kt...becoming NE 5 to 10 kt. Waves 2 to
3 ft...subsiding to 1 ft. A chance of showers through the night.
Showers likely after midnight.

$$

ANZ541-300800-
Choptank River to Cambridge MD and the Little Choptank River-
303 PM EDT Tue Sep 29 2026

.REST OF THIS AFTERNOON...W winds 5 kt. Waves flat.
.TONIGHT...SW 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 to 2 ft.
.SAT...N winds 10 to 15 kt...becoming NE 5 to 10 kt. Waves 1 to
2 ft. A chance of showers through the night. Showers likely after
midnight.

$$

ANZ542-300800-
Patuxent River to Broomes Island MD-
303 PM EDT Tue Sep 29 2026

.REST OF THIS AFTERNOON...W 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.
.WED NIGHT...S winds 5 to 10 kt. Waves 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.

$$

ANZ534-300800-
Chesapeake Bay from Drum Point to Smith Point-
303 PM EDT Tue Sep 29 2026

.REST OF THIS AFTERNOON...NW winds 5 kt. Waves flat.
.TONIGHT...SW winds around 5 kt. Waves 1 ft or less.
.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 ft.
.THU NIGHT...S winds 10 to 15 kt. Waves 2 ft.
.FRI...SW winds 10 to 15 kt...becoming NW after midnight. Waves
2 ft.
.SAT...N winds 10 to 15 kt...becoming NE. Waves 1 to 2 ft. A chance
of showers.

$$

ANZ543-300800-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
303 PM EDT Tue Sep 29 2026

.REST OF THIS AFTERNOON...W 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 to 10 kt. Waves 1 ft.
.THU...S winds 10 kt. Waves 1 ft.
.THU NIGHT...S winds 10 to 15 kt. Waves 1 ft.
.FRI...S winds 10 to 15 kt...becoming NW after midnight. Waves 1 to
2 ft.
.SAT...N winds 10 to 15 kt...becoming NE. Waves 1 ft. A chance of
showers.

$$