815
FZUS51 KLWX 110834
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
433 AM EDT Sat Oct 11 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.

ANZ500-112300-
433 AM EDT Sat Oct 11 2025

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

Coastal low pressure develops along the southeast U.S. coast this
weekend, then moves north toward the Delmarva early next week. A
prolonged period of hazardous marine conditions is expected to
continue through the middle of next week, with gales likely at times
 Sunday through Monday. Small Craft Advisories are likely needed
Tuesday into Wednesday, as well.

$$

ANZ535-112300-
Tidal Potomac from Key Bridge to Indian Head-
433 AM EDT Sat Oct 11 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH SUNDAY
MORNING...
...GALE WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH LATE SUNDAY
NIGHT...

.REST OF THE OVERNIGHT...NE winds 5 kt. Waves less than 1 ft.
.TODAY...NE winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.TONIGHT...NE winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
Showers likely. Vsby 1 to 3 NM.
.SUN...NE winds 15 to 20 kt with gusts to 30 kt. Waves 1 to 2 ft.
Showers.
.SUN NIGHT...NE winds 15 to 20 kt with gusts to 30 kt. Waves 1 to
2 ft. Showers likely.
.MON...N winds 15 kt with gusts to 30 kt. Waves 2 ft. A chance of
showers.
.MON NIGHT...N winds 10 to 15 kt. Gusts up to 30 kt... diminishing
to 20 kt after midnight. Waves 1 to 2 ft. A chance of showers.
.TUE...N winds 10 to 15 kt. Waves 1 ft.
.WED...NW winds 5 to 10 kt. Waves 1 ft.

$$

ANZ536-112300-
Tidal Potomac from Indian Head to Cobb Island-
433 AM EDT Sat Oct 11 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH SUNDAY
MORNING...
...GALE WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH LATE SUNDAY
NIGHT...

.REST OF THE OVERNIGHT...NE winds 5 kt. Waves less than 1 ft.
.TODAY...NE winds 5 to 10 kt. Waves 1 ft.
.TONIGHT...NE winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft. Showers likely. Vsby 1 to 3 NM.
.SUN...NE winds 15 to 20 kt with gusts to 30 kt. Waves 2 ft.
Showers.
.SUN NIGHT...N winds 15 to 20 kt with gusts to 30 kt. Waves 2 ft.
Showers likely.
.MON...N winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft. A chance
of showers.
.MON NIGHT...N winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft. A
chance of showers.
.TUE...N winds 10 to 15 kt. Waves 1 ft. A chance of showers in the
morning.
.WED...NW winds 10 to 15 kt. Waves 1 ft.

$$

ANZ537-112300-
Tidal Potomac from Cobb Island to Smith Point-
433 AM EDT Sat Oct 11 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 2 PM EDT THIS AFTERNOON
THROUGH LATE TONIGHT...
...GALE WATCH IN EFFECT FROM SUNDAY MORNING THROUGH MONDAY EVENING...

.REST OF THE OVERNIGHT...NE winds 10 kt. Waves 1 ft.
.TODAY...NE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A
chance of showers.
.TONIGHT...NE winds 15 to 20 kt. Gusts up to 25 kt... increasing to
30 kt late. Waves 3 ft. Showers likely. Vsby 1 to 3 NM.
.SUN...NE winds 25 to 30 kt. Waves 5 ft. Showers.
.SUN NIGHT...NE winds 25 to 30 kt. Waves 5 ft. Showers likely.
.MON...N winds 20 to 25 kt with gusts to 30 kt. Waves 4 ft. Showers
likely.
.MON NIGHT...N winds 20 to 25 kt with gusts to 30 kt. Waves 4 ft. A
chance of showers.
.TUE...N winds 15 to 20 kt. Waves 2 to 3 ft. A chance of showers in
the morning.
.WED...N winds 15 to 20 kt. Waves 2 to 3 ft.

$$

ANZ530-112300-
Chesapeake Bay north of Pooles Island-
433 AM EDT Sat Oct 11 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM EDT THIS AFTERNOON
THROUGH SUNDAY MORNING...
...GALE WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH LATE SUNDAY
NIGHT...

.REST OF THE OVERNIGHT...NE winds 5 kt. Waves flat.
.TODAY...NE winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.TONIGHT...NE winds 15 to 20 kt. Gusts up to 25 kt. Waves 1 to 2 ft.
Showers likely. Vsby 1 to 3 NM.
.SUN...NE winds 20 to 25 kt with gusts to 30 kt. Waves 2 ft. Showers
likely.
.SUN NIGHT...NE winds 20 to 25 kt with gusts to 35 kt. Waves 2 ft.
Showers.
.MON...NE winds 20 to 25 kt with gusts to 30 kt. Waves 2 ft. Showers
likely.
.MON NIGHT...N winds 20 to 25 kt with gusts to 30 kt. Waves 2 ft. A
chance of showers.
.TUE...N winds 15 to 20 kt. Waves 1 to 2 ft. A chance of showers in
the morning.
.WED...NW winds 15 to 20 kt. Waves 1 ft.

$$

ANZ531-112300-
Chesapeake Bay from Pooles Island to Sandy Point-
433 AM EDT Sat Oct 11 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM EDT THIS AFTERNOON
THROUGH SUNDAY MORNING...
...GALE WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH LATE SUNDAY
NIGHT...

.REST OF THE OVERNIGHT...NE winds 5 kt. Waves flat.
.TODAY...NE winds 10 to 15 kt. Gusts up to 20 kt in the late morning
and afternoon. Waves 1 ft. A chance of showers. Vsby 1 to 3 NM.
.TONIGHT...NE winds 15 to 20 kt with gusts to 25 kt. Waves 2 to
3 ft. Showers likely. Vsby 1 to 3 NM.
.SUN...NE winds 20 to 25 kt with gusts to 30 kt. Waves 3 ft.
Showers.
.SUN NIGHT...NE winds 25 to 30 kt. Waves 4 ft. Showers.
.MON...N winds 20 to 25 kt with gusts to 30 kt. Waves 3 ft. Showers
likely.
.MON NIGHT...N winds 20 to 25 kt with gusts to 30 kt. Waves 3 ft. A
chance of showers.
.TUE...N winds 15 to 20 kt. Waves 2 to 3 ft. A chance of showers in
the morning.
.WED...N winds 15 to 20 kt. Waves 2 to 3 ft.

$$

ANZ538-112300-
Patapsco River including Baltimore Harbor-
433 AM EDT Sat Oct 11 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM EDT THIS AFTERNOON
THROUGH SUNDAY MORNING...
...GALE WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH LATE SUNDAY
NIGHT...

.REST OF THE OVERNIGHT...NE winds 5 kt. Waves flat.
.TODAY...NE winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.TONIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt... increasing to
25 kt late. Waves 1 to 2 ft. Showers likely. Vsby 1 to 3 NM.
.SUN...NE winds 15 to 20 kt with gusts to 30 kt. Waves 2 ft.
Showers.
.SUN NIGHT...NE winds 15 to 20 kt with gusts to 30 kt. Waves 2 ft.
Showers likely.
.MON...N winds 15 to 20 kt with gusts to 30 kt. Waves 2 ft. Showers
likely.
.MON NIGHT...N winds 15 to 20 kt with gusts to 25 kt. Waves 1 to
2 ft. A chance of showers.
.TUE...N winds 10 to 15 kt. Waves 1 ft. A chance of showers in the
morning.
.WED...NW winds 10 to 15 kt. Waves 1 ft.

$$

ANZ539-112300-
Chester River to Queenstown MD-
433 AM EDT Sat Oct 11 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM EDT THIS AFTERNOON
THROUGH SUNDAY MORNING...
...GALE WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH LATE SUNDAY
NIGHT...

.REST OF THE OVERNIGHT...NE winds 5 kt. Waves flat.
.TODAY...NE winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.TONIGHT...NE winds 15 to 20 kt. Gusts up to 25 kt. Waves 1 to 2 ft.
Showers likely. Vsby 1 to 3 NM.
.SUN...NE winds 15 to 20 kt with gusts to 30 kt. Waves 2 to 3 ft.
Showers.
.SUN NIGHT...NE winds 20 to 25 kt with gusts to 35 kt. Waves 3 ft.
Showers.
.MON...N winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft. Showers
likely.
.MON NIGHT...N winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft. A
chance of showers.
.TUE...N winds 15 to 20 kt...diminishing to 10 kt. Waves 2 ft. A
chance of showers in the morning.
.WED...N winds 10 to 15 kt. Waves 1 to 2 ft.

$$

ANZ532-112300-
Chesapeake Bay from Sandy Point to North Beach-
433 AM EDT Sat Oct 11 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM EDT THIS AFTERNOON
THROUGH LATE TONIGHT...
...GALE WATCH IN EFFECT FROM SUNDAY MORNING THROUGH MONDAY EVENING...

.REST OF THE OVERNIGHT...E winds 5 kt. Waves less than 1 ft.
.TODAY...NE winds 10 to 15 kt. Gusts up to 20 kt in the late morning
and afternoon. Waves 1 to 2 ft. A chance of showers.
.TONIGHT...NE winds 15 to 20 kt. Gusts up to 25 kt. Waves 2 to 3 ft.
Showers likely. Vsby 1 to 3 NM.
.SUN...NE winds 25 to 30 kt. Waves 4 ft. Showers.
.SUN NIGHT...NE winds 25 to 30 kt. Waves 5 ft. Showers.
.MON...N winds 20 to 25 kt with gusts to 30 kt. Waves 4 ft. Showers
likely.
.MON NIGHT...N winds 20 to 25 kt with gusts to 30 kt. Waves 4 ft. A
chance of showers.
.TUE...N winds 20 to 25 kt...diminishing to 10 to 15 kt. Waves 2 to
3 ft. A chance of showers in the morning.
.WED...NW winds 15 to 20 kt. Waves 2 to 3 ft.

$$

ANZ540-112300-
Eastern Bay-
433 AM EDT Sat Oct 11 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM EDT THIS AFTERNOON
THROUGH LATE TONIGHT...
...GALE WATCH IN EFFECT FROM SUNDAY MORNING THROUGH MONDAY EVENING...

.REST OF THE OVERNIGHT...NE winds 5 kt. Waves flat.
.TODAY...NE winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.TONIGHT...NE winds 15 to 20 kt. Gusts up to 25 kt. Waves 2 ft.
Showers likely. Vsby 1 to 3 NM.
.SUN...NE winds 20 to 25 kt with gusts to 35 kt. Waves 3 ft.
Showers.
.SUN NIGHT...NE winds 20 to 25 kt with gusts to 40 kt. Waves 3 ft.
Showers.
.MON...N winds 20 to 25 kt with gusts to 30 kt. Waves 2 to 3 ft.
Showers likely.
.MON NIGHT...N winds 20 to 25 kt with gusts to 30 kt. Waves 2 ft. A
chance of showers.
.TUE...N winds 15 to 20 kt. Waves 1 to 2 ft. A chance of showers in
the morning.
.WED...N winds 15 to 20 kt. Waves 1 to 2 ft.

$$

ANZ533-112300-
Chesapeake Bay from North Beach to Drum Point-
433 AM EDT Sat Oct 11 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM EDT THIS AFTERNOON
THROUGH LATE TONIGHT...
...GALE WATCH IN EFFECT FROM SUNDAY MORNING THROUGH MONDAY EVENING...

.REST OF THE OVERNIGHT...E winds 10 kt. Waves 1 ft.
.TODAY...NE winds 10 to 15 kt. Gusts up to 20 kt in the late morning
and afternoon. Waves 1 to 2 ft. A chance of showers. Vsby 1 to 3 NM.
.TONIGHT...NE winds 20 to 25 kt with gusts to 30 kt. Waves 3 ft.
Showers likely. Vsby 1 to 3 NM.
.SUN...NE winds 25 to 30 kt. Waves 5 ft. Showers.
.SUN NIGHT...NE winds 25 to 30 kt. Waves 6 ft. Showers.
.MON...N winds 25 to 30 kt. Waves 5 ft. Showers likely.
.MON NIGHT...N winds 25 to 30 kt. Waves 5 ft. A chance of showers.
.TUE...N winds 20 to 25 kt...diminishing to 15 kt after midnight.
Waves 3 ft...subsiding to 2 ft after midnight. A chance of showers
in the morning.
.WED...N winds 20 to 25 kt. Waves 2 to 3 ft.

$$

ANZ541-112300-
Choptank River to Cambridge MD and the Little Choptank River-
433 AM EDT Sat Oct 11 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM EDT THIS AFTERNOON
THROUGH LATE TONIGHT...
...GALE WATCH IN EFFECT FROM SUNDAY MORNING THROUGH MONDAY EVENING...

.REST OF THE OVERNIGHT...NE winds 10 kt. Waves 1 ft.
.TODAY...NE winds 5 to 10 kt. Gusts up to 20 kt in the late morning
and afternoon. Waves 1 ft. A chance of showers. Vsby 1 to 3 NM.
.TONIGHT...NE winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
Showers likely. Vsby 1 to 3 NM.
.SUN...NE winds 25 to 30 kt. Waves 3 ft. Showers.
.SUN NIGHT...NE winds 25 to 30 kt. Waves 4 ft. Showers.
.MON...N winds 20 to 25 kt with gusts to 30 kt. Waves 3 ft. Showers
likely.
.MON NIGHT...N winds 20 to 25 kt with gusts to 30 kt. Waves 3 ft. A
chance of showers.
.TUE...N winds 20 to 25 kt...diminishing to 10 to 15 kt. Waves 2 to
3 ft. A chance of showers in the morning.
.WED...N winds 15 to 20 kt. Waves 2 ft.

$$

ANZ542-112300-
Patuxent River to Broomes Island MD-
433 AM EDT Sat Oct 11 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM EDT THIS AFTERNOON
THROUGH LATE TONIGHT...
...GALE WATCH IN EFFECT FROM SUNDAY MORNING THROUGH MONDAY EVENING...

.REST OF THE OVERNIGHT...NE winds 5 kt. Waves less than 1 ft.
.TODAY...NE winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.TONIGHT...NE winds 10 to 15 kt with gusts to 25 kt. Waves 1 ft.
Showers likely. Vsby 1 to 3 NM.
.SUN...NE winds 20 to 25 kt with gusts to 35 kt. Waves 1 to 2 ft.
Showers.
.SUN NIGHT...NE winds 20 to 25 kt with gusts to 35 kt. Waves 1 to
2 ft. Showers.
.MON...N winds 15 to 20 kt with gusts to 30 kt. Waves 1 ft. Showers
likely.
.MON NIGHT...N winds 15 to 20 kt with gusts to 30 kt. Waves 1 ft. A
chance of showers.
.TUE...N winds 10 to 15 kt. Waves 1 ft. A chance of showers in the
morning.
.WED...N winds 10 to 15 kt. Waves 1 ft.

$$

ANZ534-112300-
Chesapeake Bay from Drum Point to Smith Point-
433 AM EDT Sat Oct 11 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 2 PM EDT THIS AFTERNOON
THROUGH LATE TONIGHT...
...GALE WATCH IN EFFECT FROM SUNDAY MORNING THROUGH MONDAY EVENING...

.REST OF THE OVERNIGHT...NE winds 10 kt. Waves 1 ft.
.TODAY...NE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A
chance of showers.
.TONIGHT...NE winds 20 to 25 kt. Gusts up to 30 kt. Waves 3 ft.
Showers likely. Vsby 1 to 3 NM.
.SUN...NE winds 25 to 30 kt. Waves 5 ft. Showers.
.SUN NIGHT...NE winds 25 to 35 kt. Waves 6 ft. Showers.
.MON...N winds 25 to 30 kt. Waves 5 ft. Showers likely.
.MON NIGHT...N winds 25 to 30 kt. Waves 5 ft. A chance of showers.
.TUE...N winds 20 to 25 kt. Waves 4 ft...subsiding to 3 ft after
midnight. A chance of showers in the morning.
.WED...N winds 20 to 25 kt. Waves 3 ft.

$$

ANZ543-112300-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
433 AM EDT Sat Oct 11 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 2 PM EDT THIS AFTERNOON
THROUGH LATE TONIGHT...
...GALE WATCH IN EFFECT FROM SUNDAY MORNING THROUGH MONDAY EVENING...

.REST OF THE OVERNIGHT...NE winds 10 kt. Waves 1 ft.
.TODAY...E winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft. A
chance of showers.
.TONIGHT...NE winds 15 to 20 kt with gusts to 30 kt. Waves 2 to
3 ft. Showers likely. Vsby 1 to 3 NM.
.SUN...NE winds 25 to 30 kt. Waves 3 ft. Showers.
.SUN NIGHT...NE winds 25 to 30 kt. Waves 3 ft. Showers.
.MON...N winds 20 to 25 kt with gusts to 35 kt. Waves 3 ft. Showers
likely.
.MON NIGHT...N winds 25 to 30 kt. Waves 3 ft. A chance of showers.
.TUE...N winds 20 to 25 kt. Waves 2 to 3 ft. A chance of showers in
the morning.
.WED...N winds 20 to 25 kt. Waves 2 ft.

$$