665
FZUS51 KLWX 150535
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
135 AM EDT Sat Mar 15 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.

ANZ500-152000-
135 AM EDT Sat Mar 15 2025

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

A front will waver near the Mid-Atlantic through tonight before
lifting back north as a warm front on Saturday. A stronger cold
front will push through late Sunday. High pressure will build in
from the west early next week. Small Craft Advisories will likely be
 needed Saturday evening through Monday. Gale conditions and/or
gusty  showers and thunderstorms are possible Sunday.  Boaters
should be aware of the threats of boating in cold water,  even when
air temperatures are spring-like.  Visit
weather.gov/safety/coldwater for more info.

$$

ANZ535-152000-
Tidal Potomac from Key Bridge to Indian Head-
135 AM EDT Sat Mar 15 2025

.OVERNIGHT...SE winds 5 kt. Waves less than 1 ft. Patchy very light
drizzle. Areas of dense fog. Vsby 1 NM or less.
.SAT...S winds 5 to 10 kt. Waves 1 ft. Patchy very light drizzle.
Areas of dense fog. Vsby 1 NM or less.
.SAT NIGHT...SE winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.SUN...S winds 10 to 15 kt with gusts to 30 kt. Waves 2 ft. Showers.
.SUN NIGHT...S winds 10 to 15 kt with gusts to 25 kt... becoming NW
5 to 10 kt after midnight. Waves 1 ft. Showers. Patchy fog.
.MON...NW winds 10 to 15 kt with gusts to 25 kt. Waves 1 ft. Showers
likely.
.MON NIGHT...NW winds 5 to 10 kt. Gusts up to 20 kt in the evening.
Waves 1 ft.
.TUE...W winds around 5 kt. Waves 1 ft.
.WED...S winds 5 to 10 kt. Waves 1 ft.

$$

ANZ536-152000-
Tidal Potomac from Indian Head to Cobb Island-
135 AM EDT Sat Mar 15 2025

.OVERNIGHT...SE winds 5 kt. Waves less than 1 ft. Patchy very light
drizzle. Areas of dense fog. Vsby 1 NM or less.
.SAT...SE winds 5 to 10 kt. Waves 1 ft. Patchy very light drizzle.
Areas of dense fog. Vsby 1 NM or less.
.SAT NIGHT...SE winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft.
.SUN...S winds 10 to 15 kt with gusts to 30 kt. Waves 2 ft. Showers.
.SUN NIGHT...S winds 10 to 15 kt with gusts to 25 kt... becoming W
5 to 10 kt after midnight. Waves 1 to 2 ft. Showers. Patchy fog.
.MON...NW winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft. Showers
likely.
.MON NIGHT...NW winds 10 to 15 kt. Gusts up to 20 kt in the evening.
Waves 1 ft.
.TUE...NW winds 5 to 10 kt...becoming SW. Waves 1 ft.
.WED...S winds 5 to 10 kt. Waves 1 ft.

$$

ANZ537-152000-
Tidal Potomac from Cobb Island to Smith Point-
135 AM EDT Sat Mar 15 2025

.OVERNIGHT...SE winds 5 kt. Waves less than 1 ft. Patchy very light
drizzle. Areas of fog. Vsby 1 NM or less.
.SAT...SE winds 5 to 10 kt. Waves 1 ft. Patchy very light drizzle.
Areas of dense fog. Vsby 1 NM or less.
.SAT NIGHT...SE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SUN...S winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft. Showers
likely.
.SUN NIGHT...S winds 10 to 15 kt...becoming SW after midnight. Gusts
up to 25 kt. Waves 2 to 3 ft. Showers. Patchy fog.
.MON...NW winds 10 to 15 kt with gusts to 25 kt. Waves 2 to 3 ft.
Showers likely. Patchy fog.
.MON NIGHT...NW winds 10 to 15 kt. Gusts up to 25 kt in the evening.
Waves 2 ft.
.TUE...N winds 10 to 15 kt...becoming NW 5 kt. Waves 1 ft or less.
.WED...SE winds 5 to 10 kt. Waves 1 ft.

$$

ANZ530-152000-
Chesapeake Bay north of Pooles Island-
135 AM EDT Sat Mar 15 2025

.OVERNIGHT...SE winds 5 kt. Waves less than 1 ft. Patchy very light
drizzle. Patchy fog. Vsby 1 to 3 NM.
.SAT...S winds 5 to 10 kt. Waves 1 ft or less. Patchy very light
drizzle. Patchy fog. Vsby 1 NM or less.
.SAT NIGHT...SE winds 10 to 15 kt. Gusts up to 20 kt in the late
evening and overnight. Waves 1 ft. Patchy fog. Vsby 1 to 3 NM.
.SUN...S winds 15 to 20 kt with gusts to 30 kt. Waves 2 ft. Showers
likely.
.SUN NIGHT...S winds 10 to 15 kt with gusts to 30 kt... becoming W
5 to 10 kt with gusts to 20 kt after midnight. Waves 1 to 2 ft.
Showers. Patchy fog.
.MON...NW winds 10 to 15 kt with gusts to 25 kt. Waves 1 to 2 ft.
Showers likely. Patchy fog.
.MON NIGHT...NW winds 10 to 15 kt. Gusts up to 20 kt in the evening.
Waves 1 to 2 ft.
.TUE...NW winds 5 to 10 kt. Waves 1 ft or less.
.WED...SE winds 5 to 10 kt. Waves 1 ft or less.

$$

ANZ531-152000-
Chesapeake Bay from Pooles Island to Sandy Point-
135 AM EDT Sat Mar 15 2025

.OVERNIGHT...SE winds 5 kt. Waves less than 1 ft. Patchy very light
drizzle. Patchy fog. Vsby 1 to 3 NM.
.SAT...S winds 5 to 10 kt. Waves 1 ft. Patchy very light drizzle.
Areas of dense fog. Vsby 1 NM or less.
.SAT NIGHT...SE winds 10 to 15 kt. Gusts up to 20 kt...increasing to
25 kt late. Waves 1 ft...building to 3 ft after midnight. Patchy
fog. Vsby 1 to 3 NM.
.SUN...S winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft. A chance
of showers. Patchy dense fog.
.SUN NIGHT...S winds 10 to 15 kt with gusts to 25 kt... becoming W
5 to 10 kt after midnight. Waves 2 to 3 ft. Showers. Patchy dense
fog.
.MON...NW winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft. Showers
likely. Patchy fog.
.MON NIGHT...NW winds 10 to 15 kt. Gusts up to 25 kt in the evening.
Waves 1 to 2 ft.
.TUE...NW winds 5 to 10 kt. Waves 1 ft or less.
.WED...SE winds 5 to 10 kt. Waves 1 ft or less.

$$

ANZ538-152000-
Patapsco River including Baltimore Harbor-
135 AM EDT Sat Mar 15 2025

.OVERNIGHT...SE winds 5 kt. Waves less than 1 ft. Patchy very light
drizzle. Patchy fog. Vsby 1 to 3 NM.
.SAT...SE winds 5 to 10 kt. Waves 1 ft. Patchy very light drizzle.
Areas of dense fog. Vsby 1 NM or less.
.SAT NIGHT...SE winds 10 to 15 kt. Gusts up to 20 kt in the late
evening and overnight. Waves 1 ft. Patchy fog. Vsby 1 to 3 NM.
.SUN...S winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft. Showers.
Patchy fog.
.SUN NIGHT...S winds 10 to 15 kt with gusts to 20 kt... becoming W
5 to 10 kt after midnight. Waves 1 to 2 ft. Showers. Patchy fog.
.MON...NW winds 10 to 15 kt with gusts to 25 kt. Waves 1 ft. Showers
likely.
.MON NIGHT...NW winds 10 to 15 kt. Gusts up to 20 kt in the evening.
Waves 1 ft.
.TUE...NW winds 5 to 10 kt...becoming SW after midnight. Waves 1 ft
or less.
.WED...SE winds 5 to 10 kt. Waves 1 ft or less.

$$

ANZ539-152000-
Chester River to Queenstown MD-
135 AM EDT Sat Mar 15 2025

.OVERNIGHT...SE winds 5 kt. Waves less than 1 ft. Patchy very light
drizzle. Areas of fog. Vsby 1 to 3 NM.
.SAT...S winds 5 to 10 kt. Waves 1 ft. Patchy very light drizzle.
Areas of dense fog. Vsby 1 NM or less.
.SAT NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt... increasing to
25 kt late. Waves 1 to 2 ft. Patchy fog. Vsby 1 to 3 NM.
.SUN...S winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft. Showers
likely.
.SUN NIGHT...S winds 15 to 20 kt with gusts to 30 kt... becoming W
10 kt with gusts to 20 kt after midnight. Waves 2 to 3 ft. Showers.
Patchy dense fog.
.MON...NW winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft. Showers
likely. Patchy fog.
.MON NIGHT...NW winds 10 to 15 kt. Gusts up to 25 kt in the evening.
Waves 1 to 2 ft.
.TUE...NW winds 5 to 10 kt...becoming SE after midnight. Waves 1 ft
or less.
.WED...SE winds 5 to 10 kt. Waves 1 ft or less.

$$

ANZ532-152000-
Chesapeake Bay from Sandy Point to North Beach-
135 AM EDT Sat Mar 15 2025

.OVERNIGHT...SE winds 5 kt. Waves less than 1 ft. Patchy very light
drizzle. Areas of fog. Vsby 1 NM or less.
.SAT...S winds 5 to 10 kt. Waves 1 ft. Patchy very light drizzle.
Areas of dense fog. Vsby 1 NM or less.
.SAT NIGHT...S winds 15 to 20 kt with gusts to 25 kt. Waves 2 to
3 ft. Patchy fog. Vsby 1 to 3 NM.
.SUN...S winds 15 to 20 kt with gusts to 30 kt. Waves 4 ft. Showers
likely. Patchy dense fog.
.SUN NIGHT...S winds 10 to 15 kt with gusts to 25 kt... becoming W
5 to 10 kt after midnight. Waves 2 to 3 ft. Showers. Patchy fog.
.MON...NW winds 10 to 15 kt with gusts to 25 kt. Waves 2 to 3 ft.
Showers likely. Patchy fog.
.MON NIGHT...NW winds 10 to 15 kt. Gusts up to 25 kt in the evening.
Waves 1 to 2 ft.
.TUE...NW winds 5 to 10 kt...becoming SW after midnight. Waves 1 ft.
.WED...SE winds 5 to 10 kt. Waves 1 to 2 ft.

$$

ANZ540-152000-
Eastern Bay-
135 AM EDT Sat Mar 15 2025

.OVERNIGHT...SE winds 5 kt. Waves flat. Patchy very light drizzle.
Patchy fog. Vsby 1 NM or less.
.SAT...S winds 5 to 10 kt. Waves 1 ft. Patchy very light drizzle.
Areas of dense fog. Vsby 1 NM or less.
.SAT NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt... increasing to
25 kt late. Waves 1 to 2 ft. Patchy fog. Vsby 1 to 3 NM.
.SUN...S winds 15 to 20 kt with gusts to 30 kt. Waves 2 to 3 ft.
Showers likely. Patchy dense fog.
.SUN NIGHT...S winds 15 to 20 kt with gusts to 30 kt... becoming W
10 kt with gusts to 20 kt after midnight. Waves 2 ft. Showers.
Patchy dense fog.
.MON...NW winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft.
Showers. Patchy fog.
.MON NIGHT...NW winds 10 to 15 kt. Gusts up to 25 kt in the evening.
Waves 1 to 2 ft.
.TUE...NW winds 5 to 10 kt...becoming S after midnight. Waves 1 ft
or less.
.WED...SE winds 5 to 10 kt. Waves 1 ft or less.

$$

ANZ533-152000-
Chesapeake Bay from North Beach to Drum Point-
135 AM EDT Sat Mar 15 2025

.OVERNIGHT...SE winds 5 kt. Waves less than 1 ft. Patchy very light
drizzle. Areas of fog. Vsby 1 NM or less.
.SAT...SE winds 5 to 10 kt. Waves 1 ft. Patchy very light drizzle.
Areas of dense fog. Vsby 1 NM or less.
.SAT NIGHT...SE winds 15 to 20 kt. Gusts up to 25 kt. Waves 2 to
3 ft. Patchy fog. Vsby 1 to 3 NM.
.SUN...S winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft. Showers
likely. Patchy dense fog.
.SUN NIGHT...S winds 15 to 20 kt...becoming SW 10 to 15 kt after
midnight. Gusts up to 25 kt. Waves 2 to 3 ft. Showers. Patchy dense
fog.
.MON...NW winds 10 to 15 kt with gusts to 25 kt. Waves 2 to 3 ft.
Showers likely. Patchy fog.
.MON NIGHT...NW winds 10 to 15 kt. Gusts up to 25 kt in the evening.
Waves 2 to 3 ft.
.TUE...NW winds 5 to 10 kt...becoming SW after midnight. Waves 1 ft.
.WED...SE winds 10 to 15 kt. Waves 1 to 2 ft.

$$

ANZ541-152000-
Choptank River to Cambridge MD and the Little Choptank River-
135 AM EDT Sat Mar 15 2025

.OVERNIGHT...SE winds 5 kt. Waves less than 1 ft. Patchy very light
drizzle. Areas of fog. Vsby 1 NM or less.
.SAT...S winds 5 to 10 kt. Waves 1 ft. Patchy very light drizzle.
Areas of dense fog. Vsby 1 NM or less.
.SAT NIGHT...SE winds 15 to 20 kt with gusts to 25 kt. Waves 1 to
2 ft. Patchy fog. Vsby 1 to 3 NM.
.SUN...S winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft. A chance
of showers. Patchy dense fog.
.SUN NIGHT...S winds 15 to 20 kt with gusts to 30 kt... becoming W
10 to 15 kt with gusts to 20 kt after midnight. Waves 2 to 3 ft.
Showers. Patchy dense fog.
.MON...NW winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft. A
chance of showers. Patchy fog.
.MON NIGHT...NW winds 10 to 15 kt. Gusts up to 25 kt in the evening.
Waves 2 ft.
.TUE...NW winds 5 to 10 kt...becoming S after midnight. Waves 1 ft.
.WED...SE winds 5 to 10 kt. Waves 1 ft.

$$

ANZ542-152000-
Patuxent River to Broomes Island MD-
135 AM EDT Sat Mar 15 2025

.OVERNIGHT...SE winds 5 kt. Waves less than 1 ft. Patchy very light
drizzle. Areas of dense fog. Vsby 1 NM or less.
.SAT...SE winds 5 to 10 kt. Waves 1 ft. Patchy very light drizzle.
Areas of dense fog. Vsby 1 NM or less.
.SAT NIGHT...SE winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.SUN...S winds 10 to 15 kt with gusts to 25 kt. Waves 1 ft. Showers
likely.
.SUN NIGHT...S winds 10 to 15 kt...becoming SW 5 to 10 kt after
midnight. Gusts up to 20 kt. Waves 1 ft. Showers. Patchy fog.
.MON...NW winds 10 to 15 kt with gusts to 25 kt. Waves 1 ft. Showers
likely. Patchy fog.
.MON NIGHT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.TUE...NW winds 5 to 10 kt...becoming W after midnight. Waves 1 ft.
.WED...SE winds 5 to 10 kt. Waves 1 ft.

$$

ANZ534-152000-
Chesapeake Bay from Drum Point to Smith Point-
135 AM EDT Sat Mar 15 2025

.OVERNIGHT...SE winds 5 to 10 kt. Waves 1 ft. Patchy very light
drizzle. Areas of dense fog. Vsby 1 NM or less.
.SAT...SE winds 5 to 10 kt. Waves 1 ft. Patchy very light drizzle.
Areas of dense fog. Vsby 1 NM or less.
.SAT NIGHT...SE winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.
Patchy fog. Vsby 1 NM or less.
.SUN...S winds 15 to 20 kt with gusts to 30 kt. Waves 4 ft. Showers
likely. Patchy dense fog.
.SUN NIGHT...S winds 15 to 20 kt...becoming SW 10 to 15 kt after
midnight. Gusts up to 30 kt. Waves 3 ft. Showers. Patchy dense fog.
.MON...NW winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft. Showers
likely. Patchy fog.
.MON NIGHT...NW winds 15 to 20 kt. Gusts up to 25 kt in the evening.
Waves 2 to 3 ft.
.TUE...N winds 10 to 15 kt...becoming NW 5 kt. Waves 1 to 2 ft.
.WED...SE winds 5 to 10 kt...becoming S after midnight. Waves 1 to
2 ft.

$$

ANZ543-152000-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
135 AM EDT Sat Mar 15 2025

.OVERNIGHT...SE winds 5 kt. Waves less than 1 ft. Patchy very light
drizzle. Areas of dense fog. Vsby 1 NM or less.
.SAT...SE winds 5 to 10 kt. Waves 1 ft. Patchy very light drizzle.
Areas of dense fog. Vsby 1 NM or less.
.SAT NIGHT...SE winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
Patchy fog. Vsby 1 NM or less.
.SUN...S winds 20 to 25 kt with gusts to 30 kt. Waves 3 ft. Showers
likely.
.SUN NIGHT...S winds 15 to 20 kt with gusts to 30 kt. Waves 2 to
3 ft. Showers. Patchy dense fog.
.MON...NW winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft. Showers
likely. Patchy fog.
.MON NIGHT...NW winds 15 to 20 kt. Gusts up to 25 kt in the evening.
Waves 1 to 2 ft.
.TUE...NW winds 10 to 15 kt...becoming N 5 kt. Waves 1 ft.
.WED...NE winds 5 to 10 kt...becoming SE. Waves 1 ft.

$$