672
FZUS51 KLWX 091307
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
807 AM EST Tue Dec 9 2025

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.

ANZ500-092100-
807 AM EST Tue Dec 9 2025

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

A strong area of Canadian high pressure will build over the region
through this afternoon. A clipper-like system moves through the area
 by mid-week before a secondary cold front crosses the waters on
Thursday. Weak high pressure returns by Friday before another cold
front races through the waters late Friday into Saturday morning.
Small Craft Advisories will likely be needed Wednesday through
Thursday, and potentially again late Friday into the weekend.

$$

ANZ535-092100-
Tidal Potomac from Key Bridge to Indian Head-
807 AM EST Tue Dec 9 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 7 PM EST THIS EVENING THROUGH
LATE TONIGHT...

.TODAY...SE winds 5 kt...becoming S late. Waves 1 ft or less.
.TONIGHT...S winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
.WED...S winds 10 to 15 kt with gusts to 30 kt. Waves 2 ft. A chance
of rain.
.WED NIGHT...W winds 5 to 10 kt with gusts to 25 kt. Waves 1 ft.
.THU...NW winds 10 to 15 kt with gusts to 25 kt. Waves 1 ft.
.THU NIGHT...NW winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
.FRI...W winds 10 to 15 kt. Waves 1 ft.
.SAT...NW winds 15 to 20 kt...diminishing to 5 to 10 kt after
midnight. Waves 1 to 2 ft. A chance of snow after midnight.

$$

ANZ536-092100-
Tidal Potomac from Indian Head to Cobb Island-
807 AM EST Tue Dec 9 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 7 PM EST THIS EVENING THROUGH
LATE TONIGHT...

.TODAY...E winds 5 kt...becoming S late. Waves 1 ft.
.TONIGHT...SW winds 10 to 15 kt with gusts to 25 kt. Waves 1 to
2 ft.
.WED...S winds 15 kt with gusts to 30 kt. Waves 2 ft.
.WED NIGHT...W winds 10 to 15 kt with gusts to 25 kt. Waves 1 to
2 ft.
.THU...NW winds 10 kt with gusts to 20 kt. Waves 1 ft.
.THU NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.FRI...W winds 5 to 10 kt...becoming SW 10 to 15 kt. Waves 1 ft.
.SAT...NW winds 15 to 20 kt...diminishing to 10 to 15 kt after
midnight. Waves 1 to 2 ft. A chance of rain and snow after midnight.


$$

ANZ537-092100-
Tidal Potomac from Cobb Island to Smith Point-
807 AM EST Tue Dec 9 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 7 PM EST THIS EVENING THROUGH
LATE TONIGHT...

.TODAY...NE winds 5 kt...becoming SW late. Waves 1 ft.
.TONIGHT...SW winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.WED...SW winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft.
.WED NIGHT...W winds 15 to 20 kt with gusts to 30 kt. Waves 2 to
3 ft.
.THU...NW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.THU NIGHT...NW winds 5 to 10 kt with gusts to 20 kt. Waves 1 to
2 ft.
.FRI...W winds 5 to 10 kt...becoming SW 10 to 15 kt. Waves 1 to
2 ft.
.SAT...NW winds 15 to 20 kt. Waves 3 ft.

$$

ANZ530-092100-
Chesapeake Bay north of Pooles Island-
807 AM EST Tue Dec 9 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 7 PM EST THIS EVENING THROUGH
LATE TONIGHT...

.TODAY...E winds 5 kt...becoming S late. Waves 1 ft or less.
.TONIGHT...SW winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft.
.WED...S winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft. Rain
likely.
.WED NIGHT...W winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
Rain likely.
.THU...W winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.THU NIGHT...W winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
.FRI...W winds 15 to 20 kt. Waves 1 to 2 ft. A chance of snow in the
evening.
.SAT...W winds 20 to 25 kt. Waves 2 ft. A chance of snow after
midnight.

$$

ANZ531-092100-
Chesapeake Bay from Pooles Island to Sandy Point-
807 AM EST Tue Dec 9 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 7 PM EST THIS EVENING THROUGH
LATE TONIGHT...

.TODAY...E winds 5 kt...becoming S this afternoon. Waves 1 ft or
less.
.TONIGHT...SW winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.
.WED...S winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft. A chance
of rain.
.WED NIGHT...W winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.
.THU...W winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.THU NIGHT...NW winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft.
.FRI...W winds 15 to 20 kt. Waves 1 to 2 ft. A chance of snow in the
evening.
.SAT...W winds 20 to 25 kt. Waves 3 ft. A chance of snow after
midnight.

$$

ANZ538-092100-
Patapsco River including Baltimore Harbor-
807 AM EST Tue Dec 9 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 7 PM EST THIS EVENING THROUGH
LATE TONIGHT...

.TODAY...E winds 5 kt...becoming S late. Waves 1 ft or less.
.TONIGHT...SW winds 10 kt with gusts to 20 kt. Waves 1 ft.
.WED...S winds 10 to 15 kt with gusts to 25 kt. Waves 1 ft. A chance
of rain.
.WED NIGHT...W winds 10 to 15 kt with gusts to 25 kt. Waves 1 ft.
.THU...W winds 10 to 15 kt with gusts to 25 kt. Waves 1 ft.
.THU NIGHT...W winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
.FRI...W winds 10 to 15 kt. Waves 1 ft. A chance of snow in the
evening.
.SAT...W winds 15 to 20 kt. Waves 1 to 2 ft. A chance of snow after
midnight.

$$

ANZ539-092100-
Chester River to Queenstown MD-
807 AM EST Tue Dec 9 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 7 PM EST THIS EVENING THROUGH
LATE TONIGHT...

.TODAY...E winds 5 kt...becoming S late. Waves 1 ft or less.
.TONIGHT...SW winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.WED...S winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft. A chance
of rain.
.WED NIGHT...W winds 15 to 20 kt with gusts to 25 kt. Waves 2 to
3 ft.
.THU...NW winds 10 to 15 kt with gusts to 25 kt. Waves 3 ft.
.THU NIGHT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.FRI...W winds 10 to 15 kt...becoming SW 15 to 20 kt after midnight.
Waves 2 ft. A chance of snow in the evening.
.SAT...NW winds 15 to 20 kt. Waves 3 ft. A chance of snow after
midnight.

$$

ANZ532-092100-
Chesapeake Bay from Sandy Point to North Beach-
807 AM EST Tue Dec 9 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 7 PM EST THIS EVENING THROUGH
LATE TONIGHT...

.TODAY...NE winds 5 kt...becoming S 10 to 15 kt this afternoon.
Waves 1 ft.
.TONIGHT...SW winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.
.WED...S winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft. A chance
of rain.
.WED NIGHT...W winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.
.THU...NW winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.THU NIGHT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.FRI...W winds 10 to 15 kt...becoming SW 15 to 20 kt. Waves 1 to
2 ft. A chance of snow and rain in the evening.
.SAT...NW winds 25 to 30 kt. Waves 3 ft. A chance of snow and rain
after midnight.

$$

ANZ540-092100-
Eastern Bay-
807 AM EST Tue Dec 9 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 7 PM EST THIS EVENING THROUGH
LATE TONIGHT...

.TODAY...E winds 5 kt...becoming S late. Waves 1 ft or less.
.TONIGHT...SW winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.WED...S winds 15 to 20 kt with gusts to 30 kt. Waves 2 to 3 ft. A
chance of rain.
.WED NIGHT...W winds 15 to 20 kt with gusts to 25 kt. Waves 2 to
3 ft.
.THU...NW winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.THU NIGHT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft.
.FRI...W winds 10 to 15 kt...becoming SW 15 to 20 kt after midnight.
Waves 1 to 2 ft. A chance of snow and rain in the evening.
.SAT...NW winds 20 to 25 kt. Waves 2 to 3 ft. A chance of snow after
midnight.

$$

ANZ533-092100-
Chesapeake Bay from North Beach to Drum Point-
807 AM EST Tue Dec 9 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 7 PM EST THIS EVENING THROUGH
LATE TONIGHT...

.TODAY...E winds 5 kt...becoming S 15 kt late. Waves 1 ft or less.
.TONIGHT...SW winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.
.WED...SW winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft. A
chance of rain.
.WED NIGHT...W winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft.
.THU...NW winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.
.THU NIGHT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.FRI...W winds 10 to 15 kt...becoming SW 15 to 20 kt. Waves 2 ft.
.SAT...NW winds 25 to 30 kt. Waves 3 ft. A chance of rain and snow
after midnight.

$$

ANZ541-092100-
Choptank River to Cambridge MD and the Little Choptank River-
807 AM EST Tue Dec 9 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 7 PM EST THIS EVENING THROUGH
LATE TONIGHT...

.TODAY...E winds 5 kt...becoming S late. Waves 1 ft or less.
.TONIGHT...SW winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.WED...S winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft. A chance
of rain.
.WED NIGHT...W winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft.
.THU...NW winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.THU NIGHT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.FRI...W winds 10 to 15 kt...becoming SW 15 to 20 kt. Waves 1 to
2 ft.
.SAT...NW winds 20 to 25 kt. Waves 3 ft. A chance of rain and snow
after midnight.

$$

ANZ542-092100-
Patuxent River to Broomes Island MD-
807 AM EST Tue Dec 9 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 7 PM EST THIS EVENING THROUGH
LATE TONIGHT...

.TODAY...NE winds 5 kt...becoming S late. Waves 1 ft.
.TONIGHT...SW winds 10 to 15 kt with gusts to 25 kt. Waves 1 ft.
.WED...SW winds 10 to 15 kt with gusts to 25 kt. Waves 1 ft.
.WED NIGHT...W winds 10 to 15 kt with gusts to 25 kt. Waves 1 ft.
.THU...NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.THU NIGHT...NW winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
.FRI...W winds 10 to 15 kt. Waves 1 ft.
.SAT...W winds 15 to 20 kt...becoming NW 10 to 15 kt after midnight.
Waves 1 ft. A chance of rain and snow after midnight.

$$

ANZ534-092100-
Chesapeake Bay from Drum Point to Smith Point-
807 AM EST Tue Dec 9 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 7 PM EST THIS EVENING THROUGH
LATE TONIGHT...

.TODAY...N winds 10 kt...becoming S this afternoon. Waves 1 ft.
.TONIGHT...SW winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.
.WED...SW winds 20 to 25 kt with gusts to 30 kt. Waves 4 ft.
.WED NIGHT...W winds 15 to 20 kt with gusts to 30 kt. Waves 4 ft.
.THU...NW winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.
.THU NIGHT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 2 to
3 ft.
.FRI...W winds 10 to 15 kt...becoming SW 15 to 20 kt. Waves 2 to
3 ft.
.SAT...NW winds 20 to 25 kt. Waves 4 ft.

$$

ANZ543-092100-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
807 AM EST Tue Dec 9 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 7 PM EST THIS EVENING THROUGH
LATE TONIGHT...

.TODAY...N winds 10 kt...becoming SW this afternoon. Waves 1 ft or
less.
.TONIGHT...SW winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.WED...SW winds 20 to 25 kt with gusts to 30 kt. Waves 3 ft.
.WED NIGHT...W winds 20 to 25 kt with gusts to 30 kt. Waves 2 to
3 ft.
.THU...NW winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.THU NIGHT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft.
.FRI...W winds 10 to 15 kt...becoming SW 20 to 25 kt. Waves 1 to
2 ft.
.SAT...NW winds 20 to 25 kt. Waves 2 to 3 ft.

$$