National Weather Service Weather Forecast Office

• Home
• Site Map
• News
• Organization
• Search for: NWS All NOAA 

000
FZUS51 KLWX 192341
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
741 PM EDT Fri Apr 19 2024

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.

ANZ500-200800-
741 PM EDT Fri Apr 19 2024

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

A cold front will pass through the region tonight into Saturday
morning. High pressure gradually pushes in from the west over the
weekend while low pressure passes well to the south. The high will
move overhead Monday and Tuesday. Small Craft Advisories may be
needed Tuesday.

$$

ANZ535-200800-
Tidal Potomac from Key Bridge to Indian Head-
741 PM EDT Fri Apr 19 2024

...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY AFTERNOON THROUGH
LATE SATURDAY NIGHT...

.TONIGHT...S winds 5 kt. Waves less than 1 ft. Scattered showers.
.SAT...NW winds 10 to 15 kt with gusts to 25 kt. Waves 1 ft.
.SAT NIGHT...NW winds 10 to 15 kt. Gusts up to 25 kt. Waves 1 ft.
.SUN...NW winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...NW winds 5 kt. Waves less than 1 ft.
.MON...NW winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...N winds 5 to 10 kt. Waves 1 ft.
.TUE...S winds 10 to 15 kt. Waves 1 ft.
.WED...SW winds 10 to 15 kt...becoming NW. Waves 1 ft. A chance of
showers.

$$

ANZ536-200800-
Tidal Potomac from Indian Head to Cobb Island-
741 PM EDT Fri Apr 19 2024

...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY AFTERNOON THROUGH
LATE SATURDAY NIGHT...

.TONIGHT...SE winds 5 to 10 kt...becoming N late. Waves 1 ft.
Isolated showers and tstms this evening, then scattered showers
after midnight with vsby 1 to 3 NM.
.SAT...NW winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
.SAT NIGHT...N winds 10 to 15 kt. Gusts up to 20 kt until early
morning. Waves 1 ft.
.SUN...NW winds 5 kt. Waves less than 1 ft.
.SUN NIGHT...NW winds 5 kt. Waves less than 1 ft.
.MON...N winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...NE winds 5 to 10 kt...becoming W after midnight. Waves
1 ft.
.TUE...S winds 10 to 15 kt. Waves 1 ft.
.WED...SW winds 10 to 15 kt...becoming NW. Waves 1 to 2 ft. A chance
of showers.

Winds and waves higher and visibilities lower in and near tstms.

$$

ANZ537-200800-
Tidal Potomac from Cobb Island to Smith Point-
741 PM EDT Fri Apr 19 2024

...SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EDT TONIGHT...
...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY EVENING THROUGH LATE
SATURDAY NIGHT...

.TONIGHT...SE winds 10 kt with gusts to 20 kt... becoming W late.
Waves 1 to 2 ft. Isolated showers and tstms this evening, then
scattered showers with isolated tstms after midnight. Patchy fog
after midnight with vsby 1 NM or less.
.SAT...NW winds 10 to 15 kt...diminishing to 5 to 10 kt late. Waves
2 ft. Scattered showers. Patchy fog. Vsby 1 to 3 NM.
.SAT NIGHT...NW winds 10 to 15 kt...becoming N 5 to 10 kt late.
Gusts up to 20 kt. Waves 1 to 2 ft.
.SUN...N winds 5 to 10 kt. Waves 1 to 2 ft.
.SUN NIGHT...W winds 5 to 10 kt. Waves 1 ft.
.MON...N winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...E winds 5 to 10 kt...becoming SW after midnight. Waves
1 ft.
.TUE...SE winds 10 to 15 kt...becoming S after midnight. Waves 1 to
2 ft.
.WED...SW winds 15 kt...becoming NW. Waves 2 to 3 ft. A chance of
showers through the night.

Winds and waves higher and visibilities lower in and near tstms.

$$

ANZ530-200800-
Chesapeake Bay north of Pooles Island-
741 PM EDT Fri Apr 19 2024

...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY AFTERNOON THROUGH
LATE SATURDAY NIGHT...

.TONIGHT...S winds 5 to 10 kt...becoming W late. Waves 1 ft or less.
Isolated showers this evening, then numerous showers after midnight.
Patchy fog after midnight with vsby 1 to 3 NM.
.SAT...NW winds 10 to 15 kt. Gusts up to 20 kt... increasing to
25 kt late. Waves 1 to 2 ft. Scattered showers. Vsby 1 to 3 NM.
.SAT NIGHT...NW winds 15 to 20 kt with gusts to 25 kt...diminishing
to 5 to 10 kt late. Waves 1 to 2 ft.
.SUN...W winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.MON...NW winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...N winds 5 to 10 kt. Waves 1 ft or less.
.TUE...SE winds 10 to 15 kt...becoming S after midnight. Waves 1 ft.
.WED...SW winds 10 to 15 kt...becoming NW. Waves 2 ft. A chance of
showers.

$$

ANZ531-200800-
Chesapeake Bay from Pooles Island to Sandy Point-
741 PM EDT Fri Apr 19 2024

...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY AFTERNOON THROUGH
LATE SATURDAY NIGHT...

.TONIGHT...S winds 5 to 10 kt...becoming NW late. Waves 1 ft.
Isolated showers this evening, then scattered showers after
midnight. Patchy fog after midnight. Vsby 1 to 3 NM.
.SAT...NW winds 10 to 15 kt. Gusts up to 20 kt... increasing to
25 kt late. Waves 2 ft.
.SAT NIGHT...NW winds 15 to 20 kt...becoming N 5 to 10 kt late.
Gusts up to 25 kt until early morning. Waves 3 ft.
.SUN...NW winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.MON...NW winds 10 kt. Waves 1 ft.
.MON NIGHT...NE winds 5 to 10 kt. Waves 1 ft.
.TUE...SE winds 5 to 10 kt...becoming S 15 kt. Waves 1 to 2 ft...
building to 3 ft.
.WED...SW winds 15 kt...becoming NW. Waves 2 to 3 ft. A chance of
showers.

$$

ANZ538-200800-
Patapsco River including Baltimore Harbor-
741 PM EDT Fri Apr 19 2024

...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY AFTERNOON THROUGH
LATE SATURDAY NIGHT...

.TONIGHT...SW winds 5 kt. Waves less than 1 ft. Isolated showers
this evening, then scattered showers after midnight. Patchy fog.
Vsby 1 to 3 NM.
.SAT...NW winds 10 to 15 kt. Gusts up to 20 kt... increasing to
25 kt late. Waves 1 ft.
.SAT NIGHT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.SUN...NW winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.MON...NW winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...N winds 5 to 10 kt. Waves flat.
.TUE...SE winds 10 to 15 kt...becoming S after midnight. Waves 1 to
2 ft.
.WED...SW winds 15 kt...becoming NW. Waves 1 ft. A chance of
showers.

$$

ANZ539-200800-
Chester River to Queenstown MD-
741 PM EDT Fri Apr 19 2024

...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY AFTERNOON THROUGH
LATE SATURDAY NIGHT...

.TONIGHT...S winds 5 to 10 kt...becoming NW late. Waves 1 ft.
Isolated showers this evening, then scattered showers after
midnight. Patchy fog after midnight with vsby 1 to 3 NM.
.SAT...NW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
Scattered showers.
.SAT NIGHT...NW winds 15 to 20 kt...becoming N 10 kt late. Waves
3 ft.
.SUN...NW winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.MON...N winds 10 kt. Waves 1 ft.
.MON NIGHT...E winds 5 to 10 kt. Waves 1 ft.
.TUE...S winds 10 to 15 kt. Waves 1 to 2 ft.
.WED...SW winds 15 kt...becoming NW. Waves 2 to 3 ft. A chance of
showers.

$$

ANZ532-200800-
Chesapeake Bay from Sandy Point to North Beach-
741 PM EDT Fri Apr 19 2024

...SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EDT TONIGHT...
...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY AFTERNOON THROUGH
LATE SATURDAY NIGHT...

.TONIGHT...S winds 10 kt...becoming NW late. Gusts up to 20 kt.
Waves 1 to 2 ft. Isolated showers this evening, then scattered
showers after midnight. Patchy fog after midnight. Vsby 1 to 3 NM.
.SAT...NW winds 10 to 15 kt...becoming W late. Gusts up to 20 kt.
Waves 1 to 2 ft. Scattered showers. Vsby 1 to 3 NM.
.SAT NIGHT...NW winds 15 to 20 kt with gusts to 25 kt...becoming N
10 kt late. Waves 2 ft.
.SUN...NW winds 5 to 10 kt. Waves 1 to 2 ft.
.SUN NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.MON...N winds 10 kt. Waves 1 ft.
.MON NIGHT...NE winds 5 to 10 kt...becoming SE after midnight. Waves
1 ft.
.TUE...SE winds 5 to 10 kt...becoming S 15 kt. Waves 1 to 2 ft...
building to 3 ft.
.WED...SW winds 15 kt...becoming NW after midnight. Waves 2 to 3 ft.
A chance of showers.

$$

ANZ540-200800-
Eastern Bay-
741 PM EDT Fri Apr 19 2024

...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY AFTERNOON THROUGH
LATE SATURDAY NIGHT...

.TONIGHT...S winds 5 to 10 kt...becoming NW late. Waves 1 ft.
Isolated showers this evening, then scattered showers after
midnight. Patchy fog after midnight with vsby 1 to 3 NM.
.SAT...NW winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
Scattered showers. Vsby 1 to 3 NM.
.SAT NIGHT...NW winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft.
.SUN...NW winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.MON...N winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...E winds 5 to 10 kt. Waves 1 ft or less.
.TUE...S winds 10 to 15 kt. Waves 1 to 2 ft.
.WED...SW winds 15 kt...becoming NW. Waves 2 ft. A chance of
showers.

$$

ANZ533-200800-
Chesapeake Bay from North Beach to Drum Point-
741 PM EDT Fri Apr 19 2024

...SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EDT TONIGHT...
...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY AFTERNOON THROUGH
LATE SATURDAY NIGHT...

.TONIGHT...S winds 10 to 15 kt with gusts to 20 kt... becoming W
5 kt late. Waves 1 to 2 ft. Isolated tstms. Isolated showers this
evening, then scattered showers after midnight. Patchy fog after
midnight with vsby 1 to 3 NM.
.SAT...N winds 10 to 15 kt...becoming W 5 to 10 kt late. Gusts up to
20 kt. Waves 2 ft. Scattered showers. Vsby 1 to 3 NM.
.SAT NIGHT...NW winds 10 kt...becoming N 15 to 20 kt in the late
evening and early morning, then diminishing to 10 kt late. Gusts up
to 25 kt until early morning. Waves 2 to 3 ft.
.SUN...NW winds 5 to 10 kt. Waves 1 to 2 ft.
.SUN NIGHT...W winds 5 to 10 kt. Waves 1 ft.
.MON...N winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...E winds 5 to 10 kt. Waves 1 ft.
.TUE...SE winds 10 to 15 kt...becoming S after midnight. Waves 1 to
2 ft...building to 3 ft.
.WED...SW winds 15 kt...becoming NW. Waves 2 to 3 ft. A chance of
showers.

Winds and waves higher and visibilities lower in and near tstms.

$$

ANZ541-200800-
Choptank River to Cambridge MD and the Little Choptank River-
741 PM EDT Fri Apr 19 2024

...SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EDT TONIGHT...
...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY AFTERNOON THROUGH
LATE SATURDAY NIGHT...

.TONIGHT...S winds 10 kt with gusts to 20 kt...becoming W late.
Waves 1 ft. Isolated tstms. Isolated showers this evening, then
scattered showers after midnight. Patchy fog after midnight with
vsby 1 to 3 NM.
.SAT...NW winds 10 to 15 kt...becoming W 5 to 10 kt late. Gusts up
to 20 kt. Waves 1 to 2 ft. Scattered showers. Patchy fog. Vsby 1 to
3 NM.
.SAT NIGHT...NW winds 5 to 10 kt...becoming N 15 to 20 kt in the
late evening and early morning, then diminishing to 10 kt late.
Waves 2 ft.
.SUN...NW winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...NW winds 5 to 10 kt. Waves 1 ft.
.MON...N winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...E winds 5 to 10 kt. Waves 1 ft or less.
.TUE...SE winds 5 kt...becoming S 10 to 15 kt. Waves 1 to 2 ft.
.WED...SW winds 15 kt...becoming NW. Waves 2 ft. A chance of
showers.

Winds and waves higher and visibilities lower in and near tstms.

$$

ANZ542-200800-
Patuxent River to Broomes Island MD-
741 PM EDT Fri Apr 19 2024

...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY AFTERNOON THROUGH
LATE SATURDAY NIGHT...

.TONIGHT...SE winds 5 to 10 kt...becoming NW late. Waves 1 ft.
Isolated tstms. Isolated showers this evening, then scattered
showers after midnight. Patchy fog after midnight with vsby 1 to
3 NM.
.SAT...NW winds 5 to 10 kt. Waves 1 ft. Scattered showers. Patchy
fog. Vsby 1 to 3 NM.
.SAT NIGHT...NW winds 5 to 10 kt. Gusts up to 25 kt in the late
evening and early morning. Waves 1 ft.
.SUN...NW winds 5 kt. Waves less than 1 ft.
.SUN NIGHT...W winds 5 to 10 kt. Waves 1 ft.
.MON...N winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...S winds 5 kt. Waves less than 1 ft.
.TUE...SE winds 10 to 15 kt...becoming S after midnight. Waves 1 ft.
.WED...SW winds 15 kt...becoming NW. Waves 1 ft. A chance of
showers.

Winds and waves higher and visibilities lower in and near tstms.

$$

ANZ534-200800-
Chesapeake Bay from Drum Point to Smith Point-
741 PM EDT Fri Apr 19 2024

...SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EDT TONIGHT...
...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY EVENING THROUGH LATE
SATURDAY NIGHT...

.TONIGHT...SE winds 10 to 15 kt with gusts to 20 kt... becoming SW
5 kt late. Waves 1 to 2 ft. Isolated tstms. Scattered showers.
Patchy fog after midnight with vsby 1 to 3 NM.
.SAT...N winds 10 to 15 kt...becoming W 5 to 10 kt late. Waves 2 ft.
Scattered showers. Patchy fog. Vsby 1 to 3 NM.
.SAT NIGHT...W winds 10 to 15 kt with gusts to 25 kt... becoming N
15 to 20 kt with gusts to 25 kt after midnight. Waves 2 to 3 ft.
.SUN...N winds 10 to 15 kt. Waves 3 ft...subsiding to 1 ft in the
afternoon.
.SUN NIGHT...W winds 5 to 10 kt. Waves 1 ft.
.MON...N winds 10 to 15 kt. Waves 2 ft.
.MON NIGHT...NE winds 5 to 10 kt...becoming S after midnight. Waves
1 ft.
.TUE...SE winds 10 to 15 kt...becoming S. Waves 1 to 2 ft...building
to 3 ft.
.WED...SW winds 10 to 15 kt...becoming NW. Waves 2 to 3 ft...
building to 4 ft after midnight. A chance of showers through the
night.

Winds and waves higher and visibilities lower in and near tstms.

$$

ANZ543-200800-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
741 PM EDT Fri Apr 19 2024

...SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EDT TONIGHT...
...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY EVENING THROUGH LATE
SATURDAY NIGHT...

.TONIGHT...SE winds 10 kt with gusts to 20 kt... becoming SW late.
Waves 1 ft. Isolated tstms. Scattered showers this evening, then
numerous showers after midnight. Patchy fog after midnight with vsby
1 to 3 NM.
.SAT...NW winds 10 to 15 kt. Waves 2 ft. Numerous showers. Patchy
fog. Vsby 1 to 3 NM.
.SAT NIGHT...W winds 5 kt...becoming N 10 to 15 kt in the late
evening and overnight. Gusts up to 20 kt. Waves 1 to 2 ft.
.SUN...NW winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...W winds 5 to 10 kt. Waves 1 ft.
.MON...N winds 10 kt. Waves 1 ft.
.MON NIGHT...E winds 5 to 10 kt. Waves 1 ft.
.TUE...E winds 5 kt...becoming S 10 to 15 kt. Waves 1 to 2 ft.
.WED...SW winds 10 to 15 kt...becoming NW. Waves 2 ft.

Winds and waves higher and visibilities lower in and near tstms.

$$