154
FZUS51 KLWX 092058
CWFLWX

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

ANZ500-100900-
358 PM EST Tue Dec 9 2025

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

A clipper system will move through the area Wednesday, then a
secondary cold front will cross the waters on Thursday. Weak high
pressure will return for Thursday night before another cold front
races across the waters late Friday into Saturday morning. Small
Craft Advisories will likely be needed Saturday.

$$

ANZ535-100900-
Tidal Potomac from Key Bridge to Indian Head-
358 PM EST Tue Dec 9 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 7 PM EST THIS EVENING THROUGH
THURSDAY AFTERNOON...

.REST OF THIS AFTERNOON...S winds 10 kt. Waves 1 ft.
.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 25 kt. Waves 1 ft. A chance
of rain.
.WED NIGHT...W winds 10 kt. Waves 1 ft.
.THU...NW winds 10 to 15 kt with gusts to 25 kt. Waves 1 ft.
.THU NIGHT...W winds 5 to 10 kt. Waves 1 ft.
.FRI...SW winds 5 to 10 kt. Waves 1 ft. A chance of snow through the
night.
.SAT...W winds 5 to 10 kt. Waves 1 ft. A chance of snow after
midnight.

$$

ANZ536-100900-
Tidal Potomac from Indian Head to Cobb Island-
358 PM EST Tue Dec 9 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 7 PM EST THIS EVENING THROUGH
THURSDAY AFTERNOON...

.REST OF THIS AFTERNOON...S winds 10 kt. Waves 1 ft.
.TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.WED...SW winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft.
.WED NIGHT...SW winds 10 to 15 kt...becoming W after midnight. Gusts
up to 20 kt. Waves 1 ft.
.THU...NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.THU NIGHT...W winds 5 to 10 kt. Waves 1 ft.
.FRI...SW winds 5 to 10 kt. Waves 1 ft. A chance of snow in the
afternoon.
.SAT...W winds 5 to 10 kt...becoming SE in the evening, then
becoming SW 10 to 15 kt after midnight. Waves 1 ft. A chance of rain
and snow after midnight.

$$

ANZ537-100900-
Tidal Potomac from Cobb Island to Smith Point-
358 PM EST Tue Dec 9 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 7 PM EST THIS EVENING THROUGH
THURSDAY AFTERNOON...

.REST OF THIS AFTERNOON...SW winds 10 kt. Waves 1 ft.
.TONIGHT...SW winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft.
.WED...SW winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.
.WED NIGHT...SW winds 15 to 20 kt...becoming W after midnight. Gusts
up to 25 kt. Waves 2 to 3 ft.
.THU...NW winds 15 to 20 kt with gusts to 25 kt. Waves 2 to 3 ft.
.THU NIGHT...NW winds 10 to 15 kt. Waves 1 to 2 ft.
.FRI...SW winds 10 to 15 kt. Waves 1 ft.
.SAT...W winds 10 to 15 kt...becoming S. Waves 1 ft.

$$

ANZ530-100900-
Chesapeake Bay north of Pooles Island-
358 PM EST Tue Dec 9 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 7 PM EST THIS EVENING THROUGH
THURSDAY AFTERNOON...

.REST OF THIS AFTERNOON...S winds 10 kt. Waves 1 ft.
.TONIGHT...SW winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft.
.WED...SW winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft. Rain
likely.
.WED NIGHT...SW winds 10 to 15 kt...becoming W after midnight. Gusts
up to 25 kt. Waves 2 ft.
.THU...W winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft.
.THU NIGHT...W winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.FRI...SW winds 5 to 10 kt. Waves 1 ft. A chance of snow through the
night.
.SAT...W winds 10 to 15 kt. Waves 1 ft. A chance of snow after
midnight.

$$

ANZ531-100900-
Chesapeake Bay from Pooles Island to Sandy Point-
358 PM EST Tue Dec 9 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 7 PM EST THIS EVENING THROUGH
THURSDAY AFTERNOON...

.REST OF THIS AFTERNOON...S winds 15 kt. 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 25 kt. Waves 3 ft. A chance
of rain.
.WED NIGHT...SW winds 15 kt...becoming W after midnight. Gusts up to
25 kt. Waves 2 ft.
.THU...NW winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.THU NIGHT...W winds 15 to 20 kt. Waves 2 ft.
.FRI...SW winds 10 to 15 kt. Waves 1 ft. A chance of snow.
.SAT...W winds 15 to 20 kt. Waves 1 to 2 ft. A chance of snow after
midnight.

$$

ANZ538-100900-
Patapsco River including Baltimore Harbor-
358 PM EST Tue Dec 9 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 7 PM EST THIS EVENING THROUGH
THURSDAY AFTERNOON...

.REST OF THIS AFTERNOON...S winds 10 kt. Waves 1 ft.
.TONIGHT...SW winds 10 kt with gusts to 25 kt. Waves 1 ft.
.WED...SW 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 20 kt. Waves 1 ft.
.THU...W winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.THU NIGHT...W winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.FRI...SW winds 5 to 10 kt. Waves 1 ft or less. A chance of snow.
.SAT...W winds 10 to 15 kt. Waves 1 ft. A chance of snow after
midnight.

$$

ANZ539-100900-
Chester River to Queenstown MD-
358 PM EST Tue Dec 9 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 7 PM EST THIS EVENING THROUGH
THURSDAY AFTERNOON...

.REST OF THIS AFTERNOON...S winds 10 kt. Waves 1 ft.
.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...SW winds 15 kt...becoming W after midnight. Gusts up to
25 kt. Waves 2 to 3 ft.
.THU...NW winds 15 to 20 kt with gusts to 25 kt. Waves 2 to 3 ft.
.THU NIGHT...W winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.FRI...SW winds 5 to 10 kt. Waves 1 ft. A chance of snow.
.SAT...W winds 10 to 15 kt. Waves 1 to 2 ft. A chance of snow after
midnight.

$$

ANZ532-100900-
Chesapeake Bay from Sandy Point to North Beach-
358 PM EST Tue Dec 9 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 7 PM EST THIS EVENING THROUGH
THURSDAY AFTERNOON...

.REST OF THIS AFTERNOON...S winds 15 kt. Waves 1 ft.
.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 25 kt. Waves 3 ft. A
chance of rain.
.WED NIGHT...SW winds 15 to 20 kt...becoming W after midnight. Gusts
up 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...W winds 15 to 20 kt. Waves 2 ft.
.FRI...SW winds 10 to 15 kt. Waves 1 to 2 ft. A chance of rain and
snow through the night.
.SAT...W winds 15 to 20 kt. Waves 1 to 2 ft. A chance of snow after
midnight.

$$

ANZ540-100900-
Eastern Bay-
358 PM EST Tue Dec 9 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 7 PM EST THIS EVENING THROUGH
THURSDAY AFTERNOON...

.REST OF THIS AFTERNOON...S winds 10 kt. 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. A
chance of rain.
.WED NIGHT...SW winds 15 to 20 kt...becoming W after midnight. Gusts
up to 25 kt. Waves 2 ft.
.THU...NW winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.THU NIGHT...W winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft.
.FRI...SW winds 10 to 15 kt. Waves 1 ft. A chance of snow and rain
through the night.
.SAT...W winds 10 to 15 kt. Waves 1 to 2 ft. A chance of snow after
midnight.

$$

ANZ533-100900-
Chesapeake Bay from North Beach to Drum Point-
358 PM EST Tue Dec 9 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 7 PM EST THIS EVENING THROUGH
THURSDAY AFTERNOON...

.REST OF THIS AFTERNOON...SW winds 15 kt. Waves 1 ft.
.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 25 kt. Waves 3 ft. A
chance of rain.
.WED NIGHT...SW winds 15 to 20 kt...becoming W after midnight. Gusts
up to 25 kt. Waves 3 ft.
.THU...NW winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.
.THU NIGHT...NW winds 15 to 20 kt. Waves 2 ft.
.FRI...SW winds 10 to 15 kt. Waves 1 to 2 ft. A chance of rain and
snow through the night.
.SAT...W winds 15 to 20 kt. Waves 2 ft. A chance of rain and snow
after midnight.

$$

ANZ541-100900-
Choptank River to Cambridge MD and the Little Choptank River-
358 PM EST Tue Dec 9 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 7 PM EST THIS EVENING THROUGH
THURSDAY AFTERNOON...

.REST OF THIS AFTERNOON...SW winds 15 kt. 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. A
chance of rain.
.WED NIGHT...SW winds 15 to 20 kt...becoming W after midnight. Gusts
up to 25 kt. Waves 3 ft.
.THU...NW winds 15 to 20 kt with gusts to 25 kt. Waves 2 to 3 ft.
.THU NIGHT...NW winds 15 to 20 kt. Waves 2 ft.
.FRI...SW winds 10 to 15 kt. Waves 1 ft. A chance of rain and snow
in the evening.
.SAT...W winds 15 to 20 kt. Waves 1 to 2 ft. A chance of rain and
snow after midnight.

$$

ANZ542-100900-
Patuxent River to Broomes Island MD-
358 PM EST Tue Dec 9 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 7 PM EST THIS EVENING THROUGH
THURSDAY AFTERNOON...

.REST OF THIS AFTERNOON...SW winds 10 kt. 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...SW winds 10 to 15 kt...becoming W after midnight. Gusts
up to 20 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. Waves 1 ft.
.FRI...SW winds 5 to 10 kt. Waves 1 ft.
.SAT...SW winds 10 to 15 kt. Waves 1 ft. A chance of rain after
midnight.

$$

ANZ534-100900-
Chesapeake Bay from Drum Point to Smith Point-
358 PM EST Tue Dec 9 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 7 PM EST THIS EVENING THROUGH
THURSDAY AFTERNOON...

.REST OF THIS AFTERNOON...S winds 10 kt. 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...SW winds 15 to 20 kt...becoming W 20 to 25 kt after
midnight. Gusts up to 30 kt. Waves 4 ft.
.THU...NW winds 15 to 20 kt. Gusts up to 30 kt in the morning. Waves
3 ft.
.THU NIGHT...NW winds 15 to 20 kt. Waves 2 ft.
.FRI...SW winds 10 to 15 kt. Waves 1 to 2 ft.
.SAT...W winds 10 to 15 kt...becoming SW 15 to 20 kt. Waves 2 ft. A
chance of rain after midnight.

$$

ANZ543-100900-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
358 PM EST Tue Dec 9 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 7 PM EST THIS EVENING THROUGH
THURSDAY AFTERNOON...

.REST OF THIS AFTERNOON...SW winds 10 kt. Waves flat.
.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 15 to 20 kt with gusts to 30 kt. Waves 2 to
3 ft.
.THU...NW winds 20 to 25 kt. Gusts up to 30 kt in the morning. Waves
2 ft.
.THU NIGHT...NW winds 15 to 20 kt. Waves 1 to 2 ft.
.FRI...W winds 10 to 15 kt...becoming SW. Waves 1 to 2 ft.
.SAT...W winds 10 to 15 kt...becoming SW 15 to 20 kt. Waves 1 to
2 ft. A chance of snow after midnight.

$$