425
FZUS51 KLWX 121133
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
733 AM EDT Sun Oct 12 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.

ANZ500-122000-
733 AM EDT Sun Oct 12 2025

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

An area of low pressure along the southeast U.S. coast will lift
north toward the Delmarva through 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 today
through Monday. Small Craft Advisories are likely needed Tuesday
into Thursday, as well.

$$

ANZ535-122000-
Tidal Potomac from Key Bridge to Indian Head-
733 AM EDT Sun Oct 12 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY MORNING...

.TODAY...NE winds 15 kt with gusts to 30 kt. Waves 1 ft. Patchy fog
this morning. Showers likely, mainly this morning with vsby 1 to
3 NM.
.TONIGHT...N winds 10 to 15 kt with gusts to 30 kt. Waves 2 ft. A
chance of showers.
.MON...N winds 10 to 15 kt with gusts to 30 kt. Waves 2 ft. A chance
of showers.
.MON NIGHT...N winds 10 to 15 kt with gusts to 25 kt. Waves 1 ft. A
chance of showers.
.TUE...N winds 10 to 15 kt with gusts to 25 kt. Waves 1 ft.
.TUE NIGHT...N winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
.WED...N winds 10 to 15 kt. Waves 1 ft.
.THU...NW winds 10 to 15 kt. Waves 1 ft.

$$

ANZ536-122000-
Tidal Potomac from Indian Head to Cobb Island-
733 AM EDT Sun Oct 12 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY MORNING...

.TODAY...NE winds 15 to 20 kt with gusts to 30 kt. Waves 2 ft.
Patchy fog this morning. Showers likely, mainly this morning. Vsby
1 to 3 NM.
.TONIGHT...N winds 15 to 20 kt with gusts to 30 kt. Waves 2 ft. A
chance of showers. Vsby 1 to 3 NM.
.MON...N winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft. A chance
of showers.
.MON NIGHT...N winds 10 to 15 kt with gusts to 25 kt. Waves 1 to
2 ft. A chance of showers.
.TUE...N winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.TUE NIGHT...N winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.WED...N winds 10 to 15 kt. Waves 1 to 2 ft.
.THU...NW winds 10 to 15 kt. Waves 1 ft.

$$

ANZ537-122000-
Tidal Potomac from Cobb Island to Smith Point-
733 AM EDT Sun Oct 12 2025

...GALE WARNING IN EFFECT THROUGH MONDAY MORNING...

.TODAY...NE winds 25 kt. Gusts up to 35 kt...increasing to 40 kt
late. Waves 4 ft. Patchy fog this morning. Showers. Vsby 1 to 3 NM.
.TONIGHT...NE winds 25 to 30 kt. Waves 5 ft. A chance of showers.
Vsby 1 to 3 NM.
.MON...N winds 20 to 25 kt with gusts to 30 kt. Waves 3 ft. A chance
of showers.
.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 with gusts to 25 kt. Waves 3 ft.
.TUE NIGHT...N winds 10 to 15 kt with gusts to 20 kt. Waves 2 to
3 ft.
.WED...N winds 15 to 20 kt. Waves 2 to 3 ft.
.THU...N winds 15 to 20 kt. Waves 2 to 3 ft.

$$

ANZ530-122000-
Chesapeake Bay north of Pooles Island-
733 AM EDT Sun Oct 12 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM EDT THIS MORNING...
...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...

.TODAY...NE winds 20 kt with gusts to 35 kt. Waves 2 to 3 ft.
Showers likely, mainly this morning. Vsby 1 to 3 NM this afternoon.
.TONIGHT...NE winds 20 to 25 kt with gusts to 35 kt. Waves 3 ft. A
chance of showers.
.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 2 ft. A
chance of showers.
.TUE...N winds 15 to 20 kt. Waves 1 to 2 ft.
.TUE NIGHT...N winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.WED...N winds 15 to 20 kt. Waves 2 ft.
.THU...NW winds 15 to 20 kt. Waves 1 to 2 ft.

$$

ANZ531-122000-
Chesapeake Bay from Pooles Island to Sandy Point-
733 AM EDT Sun Oct 12 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM EDT THIS MORNING...
...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...

.TODAY...NE winds 20 to 25 kt with gusts to 35 kt. Waves 3 ft.
Showers likely, mainly this morning. Vsby 1 to 3 NM this afternoon.
.TONIGHT...NE winds 20 to 25 kt with gusts to 35 kt. Waves 4 ft. A
chance of showers. Vsby 1 to 3 NM.
.MON...N winds 20 to 25 kt with gusts to 30 kt. Waves 3 ft. Showers
likely. Vsby 1 to 3 NM.
.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.
.TUE NIGHT...N winds 15 to 20 kt. Waves 2 ft.
.WED...N winds 15 to 20 kt. Waves 2 to 3 ft.
.THU...N winds 15 to 20 kt. Waves 2 to 3 ft.

$$

ANZ538-122000-
Patapsco River including Baltimore Harbor-
733 AM EDT Sun Oct 12 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM EDT THIS MORNING...
...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...

.TODAY...NE winds 15 to 20 kt with gusts to 30 kt. Waves 2 ft.
Showers likely, mainly this morning. Vsby 1 to 3 NM this afternoon.
.TONIGHT...NE winds 15 to 20 kt with gusts to 30 kt. Waves 2 ft. A
chance of showers.
.MON...N winds 15 to 20 kt with gusts to 30 kt. Waves 2 ft. Showers
likely. Vsby 1 to 3 NM.
.MON NIGHT...N winds 10 to 15 kt with gusts to 25 kt. Waves 1 ft. A
chance of showers.
.TUE...N winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.TUE NIGHT...N winds 10 kt with gusts to 20 kt. Waves 1 ft.
.WED...N winds 10 to 15 kt. Waves 1 ft.
.THU...N winds 10 to 15 kt. Waves 1 ft.

$$

ANZ539-122000-
Chester River to Queenstown MD-
733 AM EDT Sun Oct 12 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM EDT THIS MORNING...
...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...

.TODAY...NE winds 20 kt with gusts to 35 kt. Waves 2 to 3 ft.
Showers likely. Vsby 1 to 3 NM this afternoon.
.TONIGHT...NE winds 20 to 25 kt with gusts to 35 kt. Waves 3 ft. A
chance of 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 25 kt. Waves 3 ft. A
chance of showers.
.TUE...N winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.TUE NIGHT...N winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.WED...N winds 15 to 20 kt. Waves 2 ft.
.THU...N winds 10 to 15 kt. Waves 2 ft.

$$

ANZ532-122000-
Chesapeake Bay from Sandy Point to North Beach-
733 AM EDT Sun Oct 12 2025

...GALE WARNING IN EFFECT THROUGH MONDAY MORNING...

.TODAY...NE winds 25 kt. Gusts up to 35 kt...increasing to 40 kt
late. Waves 4 ft. Showers likely. Vsby 1 to 3 NM.
.TONIGHT...NE winds 25 to 30 kt. Waves 5 ft. A chance of showers.
Vsby 1 to 3 NM.
.MON...N winds 20 to 25 kt with gusts to 35 kt. Waves 4 ft. Showers
likely. Vsby 1 to 3 NM.
.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 3 ft.
.TUE NIGHT...N winds 15 to 20 kt. Waves 2 ft.
.WED...N winds 20 to 25 kt. Waves 2 to 3 ft.
.THU...N winds 15 to 20 kt. Waves 2 to 3 ft.

$$

ANZ540-122000-
Eastern Bay-
733 AM EDT Sun Oct 12 2025

...GALE WARNING IN EFFECT THROUGH MONDAY MORNING...

.TODAY...NE winds 20 to 25 kt with gusts to 35 kt. Waves 2 to 3 ft.
Showers likely. Vsby 1 to 3 NM this afternoon.
.TONIGHT...NE winds 20 to 25 kt with gusts to 35 kt. Waves 3 ft. A
chance of showers. Vsby 1 to 3 NM.
.MON...N winds 20 to 25 kt with gusts to 30 kt. Waves 2 to 3 ft.
Showers likely. Vsby 1 to 3 NM.
.MON NIGHT...N winds 15 to 20 kt with gusts to 30 kt. Waves 2 ft. A
chance of showers.
.TUE...N winds 15 to 20 kt. Waves 2 ft.
.TUE NIGHT...N winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.WED...N winds 15 to 20 kt. Waves 2 ft.
.THU...N winds 15 to 20 kt. Waves 1 to 2 ft.

$$

ANZ533-122000-
Chesapeake Bay from North Beach to Drum Point-
733 AM EDT Sun Oct 12 2025

...GALE WARNING IN EFFECT THROUGH MONDAY MORNING...

.TODAY...NE winds 25 to 30 kt. Gusts up to 35 kt until late
afternoon. Waves 4 ft...building to 6 ft late. Near the mouth of the
Choptank, waves around 3 ft. Patchy fog this morning. Showers. Vsby
1 to 3 NM.
.TONIGHT...NE winds 25 to 30 kt. Waves 6 ft. A chance of showers.
Vsby 1 to 3 NM.
.MON...N winds 20 to 25 kt with gusts to 35 kt. Waves 4 ft. A chance
of showers. Vsby 1 to 3 NM.
.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. Waves 3 ft.
.TUE NIGHT...N winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.
.WED...N winds 20 to 25 kt. Waves 3 ft.
.THU...N winds 15 to 20 kt. Waves 3 ft.

$$

ANZ541-122000-
Choptank River to Cambridge MD and the Little Choptank River-
733 AM EDT Sun Oct 12 2025

...GALE WARNING IN EFFECT THROUGH MONDAY MORNING...

.TODAY...NE winds 25 kt. Gusts up to 35 kt...increasing to 40 kt
late. Waves 3 ft. Patchy fog this morning. Showers. Vsby 1 to 3 NM.
.TONIGHT...NE winds 25 to 30 kt. Waves 4 ft. A chance of showers.
Vsby 1 to 3 NM.
.MON...N winds 20 to 25 kt with gusts to 35 kt. Waves 3 ft. A chance
of showers. Vsby 1 to 3 NM.
.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 with gusts to 25 kt. Waves 2 ft.
.TUE NIGHT...N winds 15 to 20 kt. Waves 2 ft.
.WED...N winds 20 to 25 kt. Waves 2 to 3 ft.
.THU...N winds 15 to 20 kt. Waves 2 ft.

$$

ANZ542-122000-
Patuxent River to Broomes Island MD-
733 AM EDT Sun Oct 12 2025

...GALE WARNING IN EFFECT THROUGH MONDAY MORNING...

.TODAY...NE winds 15 to 20 kt with gusts to 35 kt. Waves 1 to 2 ft.
Patchy fog this morning. Showers. Vsby 1 to 3 NM.
.TONIGHT...NE winds 20 to 25 kt with gusts to 35 kt. Waves 1 to
2 ft. A chance of showers. Vsby 1 to 3 NM.
.MON...N winds 15 to 20 kt with gusts to 30 kt. Waves 1 ft. A chance
of showers.
.MON NIGHT...N winds 15 to 20 kt. Gusts up to 30 kt... diminishing
to 20 kt after midnight. Waves 1 ft. A chance of showers.
.TUE...N winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.TUE NIGHT...N winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.WED...N winds 10 to 15 kt. Waves 1 ft.
.THU...N winds 10 to 15 kt. Waves 1 ft.

$$

ANZ534-122000-
Chesapeake Bay from Drum Point to Smith Point-
733 AM EDT Sun Oct 12 2025

...GALE WARNING IN EFFECT THROUGH MONDAY MORNING...

.TODAY...NE winds 25 to 30 kt. Gusts up to 35 kt this morning. Waves
5 ft. Patchy fog this morning. Showers, mainly this morning with
vsby 1 to 3 NM.
.TONIGHT...NE winds 25 to 30 kt. Waves 6 ft. Showers likely.
.MON...N winds 20 to 25 kt with gusts to 35 kt. Waves 5 ft. A chance
of showers. Vsby 1 to 3 NM.
.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. Waves 4 ft.
.TUE NIGHT...N winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.
.WED...N winds 20 to 25 kt. Waves 3 ft...building to 5 ft after
midnight.
.THU...N winds 20 to 25 kt. Waves 3 ft.

$$

ANZ543-122000-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
733 AM EDT Sun Oct 12 2025

...GALE WARNING IN EFFECT THROUGH MONDAY MORNING...

.TODAY...NE winds 25 to 30 kt. Gusts up to 35 kt this morning. Waves
3 ft. Patchy fog this morning. Showers, mainly this morning with
vsby 1 to 3 NM.
.TONIGHT...NE winds 25 to 30 kt. Waves 4 ft. A chance of showers.
.MON...N winds 20 to 25 kt with gusts to 35 kt. Waves 3 ft. A chance
of showers. Vsby 1 to 3 NM.
.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. Waves 2 ft.
.TUE NIGHT...N winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.WED...N winds 20 to 25 kt. Waves 2 to 3 ft.
.THU...N winds 20 to 25 kt. Waves 2 ft.

$$