184
FZUS51 KLWX 300257
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
1057 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-
1057 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-
1057 PM EDT Tue Sep 29 2026

.REST OF 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 kt. Waves less than 1 ft.
.FRI NIGHT...NW winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.SAT...NE winds 5 to 10 kt. Waves 1 ft. A chance of showers, then
showers likely after midnight.
.SUN...N winds 5 to 10 kt. Waves 1 ft. Showers likely .

$$

ANZ536-300800-
Tidal Potomac from Indian Head to Cobb Island-
1057 PM EDT Tue Sep 29 2026

.REST OF TONIGHT...SW winds around 5 kt. Waves flat. Patchy fog with
vsby 1 to 3 NM.
.WED...SW winds around 5 kt. Waves 1 ft. Patchy fog. Vsby 1 to 3 NM.
.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. Waves 1 ft.
.FRI NIGHT...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.
.SUN...NE winds 5 kt. Waves less than 1 ft. Showers likely .

$$

ANZ537-300800-
Tidal Potomac from Cobb Island to Smith Point-
1057 PM EDT Tue Sep 29 2026

.REST OF TONIGHT...SW winds 5 kt. Waves flat.
.WED...SW winds around 5 kt...becoming SE late. Waves 1 ft or less.
Patchy fog. Vsby 1 to 3 NM.
.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.
.FRI NIGHT...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.
.SUN...NE winds 5 to 10 kt. Waves 1 ft. Showers likely .

$$

ANZ530-300800-
Chesapeake Bay north of Pooles Island-
1057 PM EDT Tue Sep 29 2026

.REST OF 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...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. Waves 1 ft.
.FRI NIGHT...SW winds 5 to 10 kt...becoming N 10 to 15 kt after
midnight. Gusts up to 20 kt. 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.
.SUN...NE winds 5 to 10 kt. Waves 1 ft. Showers likely through the
day, then a chance of showers through the night.

$$

ANZ531-300800-
Chesapeake Bay from Pooles Island to Sandy Point-
1057 PM EDT Tue Sep 29 2026

.REST OF 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. Waves 1 ft.
.FRI NIGHT...SW winds 10 kt...becoming N after midnight. Gusts up to
20 kt. 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.
.SUN...NE winds 5 to 10 kt. Waves 1 ft. Showers likely through the
day, then a chance of showers through the night.

$$

ANZ538-300800-
Patapsco River including Baltimore Harbor-
1057 PM EDT Tue Sep 29 2026

.REST OF 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. Waves 1 ft or less.
.FRI NIGHT...W winds 5 to 10 kt...becoming N after midnight. Waves
1 ft. A chance of showers.
.SAT...NE winds 5 to 10 kt. Waves 1 ft. A chance of showers in the
morning. A chance of showers after midnight.
.SUN...NE winds 5 to 10 kt...becoming NW after midnight. Waves 1 ft.
Showers likely through the day, then a chance of showers through the
night.

$$

ANZ539-300800-
Chester River to Queenstown MD-
1057 PM EDT Tue Sep 29 2026

.REST OF 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 kt. Waves less than 1 ft.
.THU NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.FRI...S winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...SW winds 5 to 10 kt...becoming N 10 to 15 kt after
midnight. Gusts up to 20 kt. 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.
.SUN...NE winds 5 to 10 kt. Waves 1 ft. Showers likely through the
day, then a chance of showers through the night.

$$

ANZ532-300800-
Chesapeake Bay from Sandy Point to North Beach-
1057 PM EDT Tue Sep 29 2026

.REST OF TONIGHT...SW winds 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. Waves 1 ft.
.FRI NIGHT...SW winds 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.
.SUN...NE winds 5 to 10 kt. Waves 1 ft. Showers likely .

$$

ANZ540-300800-
Eastern Bay-
1057 PM EDT Tue Sep 29 2026

.REST OF 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. Waves 1 ft.
.FRI NIGHT...SW winds 5 to 10 kt...becoming N 10 to 15 kt after
midnight. Gusts up to 20 kt. Waves 1 ft.
.SAT...N winds 10 to 15 kt...becoming NE 5 to 10 kt. Waves 1 ft. A
chance of showers.
.SUN...NE winds 5 to 10 kt. Waves 1 ft. Showers likely .

$$

ANZ533-300800-
Chesapeake Bay from North Beach to Drum Point-
1057 PM EDT Tue Sep 29 2026

.REST OF TONIGHT...SW winds 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. Waves 1 ft.
.FRI NIGHT...SW winds 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.
.SUN...NE winds 5 to 10 kt. Waves 1 ft. Showers likely .

$$

ANZ541-300800-
Choptank River to Cambridge MD and the Little Choptank River-
1057 PM EDT Tue Sep 29 2026

.REST OF TONIGHT...SW winds 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. Waves 1 ft.
.FRI 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.
.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.
.SUN...NE winds 5 to 10 kt. Waves 1 ft. Showers likely .

$$

ANZ542-300800-
Patuxent River to Broomes Island MD-
1057 PM EDT Tue Sep 29 2026

.REST OF 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. Waves 1 ft.
.FRI NIGHT...SW winds 5 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.
.SUN...NE winds 5 to 10 kt. Waves 1 ft. Showers likely .

$$

ANZ534-300800-
Chesapeake Bay from Drum Point to Smith Point-
1057 PM EDT Tue Sep 29 2026

.REST OF TONIGHT...SW winds 5 kt. Waves less than 1 ft.
.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. Waves 2 ft.
.FRI NIGHT...S 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.
.SUN...NE winds 10 to 15 kt. Waves 1 to 2 ft. Showers likely .

$$

ANZ543-300800-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
1057 PM EDT Tue Sep 29 2026

.REST OF TONIGHT...SW winds 5 kt. Waves flat.
.WED...SW winds around 5 kt. Waves 1 ft or less. Patchy fog. Vsby
1 to 3 NM.
.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...SW winds 10 to 15 kt. Waves 1 ft.
.FRI NIGHT...S winds 10 to 15 kt...becoming NW after midnight. Gusts
up to 20 kt. Waves 1 to 2 ft.
.SAT...N winds 10 to 15 kt...becoming NE. Waves 1 ft. A chance of
showers.
.SUN...NE winds 10 kt. Waves 1 ft. Showers likely .

$$