National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Coastal Waters Forecast
Issued by NWS Sterling, VA

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FZUS51 KLWX 160257
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
1057 PM EDT Tue Sep 15 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.

ANZ500-160800-
1057 PM EDT Tue Sep 15 2026

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

Canadian high pressure will remain over the northeastern U.S.
through the middle of the week. Another cold front is expected to
near the region by Friday morning before high pressure builds in
from the northwest into the weekend. Small Craft Advisories may be
needed at times on Thursday due to southerly channeling effects.

$$

ANZ535-160800-
Tidal Potomac from Key Bridge to Indian Head-
1057 PM EDT Tue Sep 15 2026

.REST OF TONIGHT...S winds 5 kt. Waves less than 1 ft.
.WED...S winds around 5 kt. Waves 1 ft.
.WED NIGHT...S winds around 5 kt. Waves 1 ft.
.THU...S winds around 5 kt. Waves 1 ft.
.THU NIGHT...SW winds around 5 kt. Waves 1 ft. A chance of showers.
.FRI...N winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...NE winds 5 to 10 kt. Waves 1 ft.
.SAT...E winds 5 to 10 kt...becoming S after midnight. Waves 1 ft.
.SUN...S winds 5 to 10 kt. Waves 1 ft. A chance of showers.

$$

ANZ536-160800-
Tidal Potomac from Indian Head to Cobb Island-
1057 PM EDT Tue Sep 15 2026

.REST OF TONIGHT...S winds 5 kt. Waves less than 1 ft.
.WED...S winds around 5 kt. Waves 1 ft.
.WED NIGHT...S winds 5 kt. Waves less than 1 ft.
.THU...S winds 5 kt. Waves less than 1 ft.
.THU NIGHT...SW winds 5 kt. Waves less than 1 ft.
.FRI...N winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...NE winds 5 to 10 kt. Waves 1 ft.
.SAT...E winds 5 to 10 kt...becoming S after midnight. Waves 1 ft.
.SUN...S winds 5 to 10 kt. Waves 1 ft. A chance of showers through
the night.

$$

ANZ537-160800-
Tidal Potomac from Cobb Island to Smith Point-
1057 PM EDT Tue Sep 15 2026

.REST OF TONIGHT...S winds 5 to 10 kt. Waves 1 ft.
.WED...S winds 5 to 10 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...NW winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...NE winds 5 to 10 kt. Waves 1 to 2 ft.
.SAT...E winds 5 to 10 kt. Waves 1 to 2 ft.
.SUN...S winds 5 to 10 kt. Waves 1 ft.

$$

ANZ530-160800-
Chesapeake Bay north of Pooles Island-
1057 PM EDT Tue Sep 15 2026

.REST OF TONIGHT...S winds 5 to 10 kt. Waves 1 ft.
.WED...S winds around 5 kt. Waves 1 ft or less.
.WED NIGHT...S winds around 5 kt. Waves 1 ft or less.
.THU...S winds 5 to 10 kt. Waves 1 ft.
.THU NIGHT...SW winds 5 to 10 kt. Waves 1 ft.
.FRI...N winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...NE winds 5 to 10 kt. Waves 1 ft.
.SAT...E winds 10 to 15 kt...becoming SE 5 to 10 kt after midnight.
Waves 1 ft.
.SUN...S winds 5 to 10 kt...becoming E after midnight. Waves 1 ft. A
chance of showers.

$$

ANZ531-160800-
Chesapeake Bay from Pooles Island to Sandy Point-
1057 PM EDT Tue Sep 15 2026

.REST OF TONIGHT...S winds 10 kt. Waves 1 ft.
.WED...S winds 5 to 10 kt. Waves 1 ft.
.WED NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.THU...S winds 5 to 10 kt. Waves 1 to 2 ft.
.THU NIGHT...S winds 10 to 15 kt...becoming SW 5 to 10 kt after
midnight. Waves 1 to 2 ft.
.FRI...N winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...NE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SAT...E winds 10 to 15 kt...becoming SE. Waves 1 to 2 ft.
.SUN...S winds 10 to 15 kt...becoming E after midnight. Waves 1 to
2 ft. A chance of showers.

$$

ANZ538-160800-
Patapsco River including Baltimore Harbor-
1057 PM EDT Tue Sep 15 2026

.REST OF TONIGHT...S winds 5 kt. Waves less than 1 ft.
.WED...S winds 5 to 10 kt. Waves 1 ft or less.
.WED NIGHT...S winds 5 to 10 kt. Waves 1 ft or less.
.THU...S winds 5 to 10 kt. Waves 1 ft or less.
.THU NIGHT...SW winds 5 to 10 kt. Waves 1 ft or less.
.FRI...N winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...NE winds 5 to 10 kt. Waves 1 ft.
.SAT...E winds 5 to 10 kt...becoming S after midnight. Waves 1 ft.
.SUN...S winds 5 to 10 kt...becoming E after midnight. Waves 1 ft. A
chance of showers.

$$

ANZ539-160800-
Chester River to Queenstown MD-
1057 PM EDT Tue Sep 15 2026

.REST OF TONIGHT...SE winds 5 to 10 kt. Waves 1 ft.
.WED...S winds 5 kt. Waves less than 1 ft.
.WED NIGHT...S winds 5 kt. Waves less than 1 ft.
.THU...S winds 5 to 10 kt. Waves 1 ft.
.THU NIGHT...SW winds 5 to 10 kt. Waves 1 ft.
.FRI...N winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...NE winds 5 to 10 kt. Waves 1 ft.
.SAT...E winds 5 to 10 kt. Waves 1 ft.
.SUN...SE winds 5 to 10 kt. Waves 1 ft. A chance of showers.

$$

ANZ532-160800-
Chesapeake Bay from Sandy Point to North Beach-
1057 PM EDT Tue Sep 15 2026

.REST OF TONIGHT...S winds 10 kt. Waves 1 ft.
.WED...S winds 5 to 10 kt. Waves 1 ft.
.WED NIGHT...S winds 5 to 10 kt. Waves 1 to 2 ft.
.THU...S winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Waves 1 to 2 ft.
.THU NIGHT...S winds 10 to 15 kt with gusts to 20 kt...becoming SW
5 to 10 kt after midnight. Waves 1 to 2 ft.
.FRI...NW winds 10 to 15 kt...becoming N in the afternoon. Waves
1 to 2 ft.
.FRI NIGHT...NE winds 10 to 15 kt. Waves 2 ft.
.SAT...E winds 10 to 15 kt...becoming SE. Waves 1 to 2 ft.
.SUN...S winds 10 to 15 kt...becoming E after midnight. Waves 2 ft.
A chance of showers.

$$

ANZ540-160800-
Eastern Bay-
1057 PM EDT Tue Sep 15 2026

.REST OF TONIGHT...SE winds 5 to 10 kt. Waves 1 ft.
.WED...S winds 5 to 10 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...N winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...NE winds 5 to 10 kt. Waves 1 ft.
.SAT...E winds 5 to 10 kt. Waves 1 ft.
.SUN...S winds 5 to 10 kt. Waves 1 ft. A chance of showers.

$$

ANZ533-160800-
Chesapeake Bay from North Beach to Drum Point-
1057 PM EDT Tue Sep 15 2026

.REST OF TONIGHT...S winds 10 kt. Waves 1 ft.
.WED...S winds 5 to 10 kt. Waves 1 ft.
.WED NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.THU...S winds 10 to 15 kt. Waves 1 to 2 ft.
.THU NIGHT...S winds 10 to 15 kt. Waves 1 to 2 ft.
.FRI...NW winds 10 to 15 kt...becoming N in the afternoon. Waves
1 to 2 ft.
.FRI NIGHT...NE winds 10 to 15 kt. Waves 2 ft.
.SAT...E winds 10 to 15 kt...becoming SE. Waves 1 to 2 ft.
.SUN...S winds 10 to 15 kt...becoming SE after midnight. Waves 1 to
2 ft. A chance of showers.

$$

ANZ541-160800-
Choptank River to Cambridge MD and the Little Choptank River-
1057 PM EDT Tue Sep 15 2026

.REST OF TONIGHT...SE winds 5 to 10 kt. Waves 1 ft.
.WED...S winds 5 to 10 kt. Waves 1 ft or less.
.WED NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.THU...S winds 10 to 15 kt. Waves 1 ft.
.THU NIGHT...S winds 10 to 15 kt. Waves 1 ft.
.FRI...NW winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...NE winds 5 to 10 kt. Waves 1 ft.
.SAT...E winds 10 to 15 kt...becoming SE after midnight. Waves 1 ft.
.SUN...S winds 10 to 15 kt...becoming SE after midnight. Waves 1 ft.
A chance of showers.

$$

ANZ542-160800-
Patuxent River to Broomes Island MD-
1057 PM EDT Tue Sep 15 2026

.REST OF TONIGHT...S winds 5 kt. Waves less than 1 ft.
.WED...S winds 5 to 10 kt. Waves 1 ft.
.WED NIGHT...S winds 5 kt. Waves less than 1 ft.
.THU...S winds 5 to 10 kt. Waves 1 ft.
.THU NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.FRI...NW winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...NE winds 5 to 10 kt. Waves 1 ft.
.SAT...SE winds 5 to 10 kt. Waves 1 ft.
.SUN...S winds 5 to 10 kt. Waves 1 ft. A chance of showers.

$$

ANZ534-160800-
Chesapeake Bay from Drum Point to Smith Point-
1057 PM EDT Tue Sep 15 2026

.REST OF TONIGHT...SE winds 5 to 10 kt. Waves 1 ft.
.WED...SE winds 5 to 10 kt. Waves 1 ft.
.WED NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.THU...S winds 10 to 15 kt. Waves 1 to 2 ft.
.THU NIGHT...S winds 10 to 15 kt. Waves 2 ft.
.FRI...NW winds 5 to 10 kt. Waves 1 to 2 ft.
.FRI NIGHT...NE winds 10 to 15 kt. Waves 2 ft.
.SAT...E winds 10 to 15 kt...becoming SE. Waves 1 to 2 ft.
.SUN...S winds 10 to 15 kt...becoming SE after midnight. Waves 2 ft.


$$

ANZ543-160800-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
1057 PM EDT Tue Sep 15 2026

.REST OF TONIGHT...SE winds 5 to 10 kt. Waves 1 ft.
.WED...SE winds 5 to 10 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 10 to 15 kt. Waves 1 ft.
.FRI...NW winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...NE winds 10 kt. Waves 1 ft.
.SAT...E winds 10 to 15 kt...becoming SE after midnight. Waves 1 ft.
.SUN...S winds 10 to 15 kt. Waves 1 to 2 ft.

$$