Coastal Waters Forecast
Issued by NWS Sterling, VA

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FZUS51 KLWX 181835
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
234 PM EDT Fri Aug 18 2017

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.

ANZ500-190800-
234 PM EDT Fri Aug 18 2017

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

A cold will cross the waters tonight. A pressure trough will remain
nearby for Saturday and Sunday while high pressure positions itself
just to our north and west. The high will move offshore early next
week. Small Craft Advisories may be needed Monday night and Tuesday.

$$

ANZ535-190800-
Tidal Potomac from Key Bridge to Indian Head-
234 PM EDT Fri Aug 18 2017

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EDT SATURDAY...
...SEVERE THUNDERSTORM WATCH 455 IN EFFECT UNTIL 9 PM EDT THIS
EVENING...

.THIS AFTERNOON...S winds 10 kt with gusts to 20 kt. Waves 1 ft.
Showers likely with a chance of tstms. Vsby 1 NM or less.
.TONIGHT...W winds 5 to 10 kt. Gusts up to 20 kt until early
morning. Waves 1 ft. Showers with tstms likely. Vsby 1 NM or less.
.SAT...W winds 5 kt. Waves less than 1 ft.
.SAT NIGHT...NW winds around 5 kt. Waves 1 ft or less.
.SUN...NW winds around 5 kt. Waves 1 ft.
.SUN NIGHT...SE winds around 5 kt. Waves 1 ft or less.
.MON...S winds around 5 kt. Waves 1 ft. A chance of showers and
tstms.
.TUE...SW winds around 5 kt. Waves 1 ft. A chance of showers and
tstms.

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

$$

ANZ536-190800-
Tidal Potomac from Indian Head to Cobb Island-
234 PM EDT Fri Aug 18 2017

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EDT SATURDAY...
...SEVERE THUNDERSTORM WATCH 455 IN EFFECT UNTIL 9 PM EDT THIS
EVENING...

.THIS AFTERNOON...S winds 10 kt with gusts to 20 kt. Waves 1 ft.
Showers likely with a chance of tstms. Vsby 1 NM or less.
.TONIGHT...W winds 5 to 10 kt. Gusts up to 20 kt until early
morning. Waves 1 ft. Showers likely with a chance of tstms. Vsby
1 NM or less.
.SAT...W winds 5 kt. Waves less than 1 ft.
.SAT NIGHT...W winds around 5 kt. Waves 1 ft or less.
.SUN...NE winds around 5 kt. Waves 1 ft or less.
.SUN NIGHT...SE winds around 5 kt. Waves 1 ft or less.
.MON...S winds around 5 kt. Waves 1 ft. A chance of tstms. A chance
of showers.
.TUE...SW winds around 5 kt. Waves 1 ft. A chance of showers and
tstms.

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

$$

ANZ537-190800-
Tidal Potomac from Cobb Island to Smith Point-
234 PM EDT Fri Aug 18 2017

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY MORNING...
...SEVERE THUNDERSTORM WATCH 455 IN EFFECT UNTIL 9 PM EDT THIS
EVENING...

.THIS AFTERNOON...S winds 10 kt with gusts to 20 kt. Waves 2 ft. A
chance of showers with a slight chance of tstms. Vsby 1 NM or less.
.TONIGHT...W winds 10 kt. Gusts up to 20 kt. Waves 2 ft. Showers
with tstms likely. Vsby 1 NM or less.
.SAT...W winds 5 to 10 kt. Gusts up to 20 kt in the morning. Waves
1 to 2 ft.
.SAT NIGHT...SW winds 5 kt. Waves less than 1 ft.
.SUN...NE winds around 5 kt. Waves 1 ft.
.SUN NIGHT...SE winds around 5 kt. Waves 1 ft or less.
.MON...S winds 5 to 10 kt. Waves 1 ft. A chance of showers through
the night.
.TUE...SW winds 10 to 15 kt. Waves 1 ft. A chance of showers and
tstms.

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

$$

ANZ530-190800-
Chesapeake Bay north of Pooles Island-
234 PM EDT Fri Aug 18 2017

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EDT SATURDAY...
...SEVERE THUNDERSTORM WATCH 455 IN EFFECT UNTIL 9 PM EDT THIS
EVENING...

.THIS AFTERNOON...S winds 10 kt with gusts to 20 kt. Waves 1 ft.
Tstms likely with showers. Vsby 1 NM or less.
.TONIGHT...W winds 5 to 10 kt. Gusts up to 20 kt until early
morning. Waves 1 ft. Showers with tstms likely. Vsby 1 NM or less.
.SAT...W winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...W winds 5 kt. Waves less than 1 ft.
.SUN...NW winds 5 kt. Waves flat.
.SUN NIGHT...SE winds around 5 kt. Waves flat.
.MON...S winds around 5 kt. Waves flat. A chance of showers through
the night.
.TUE...SW winds 5 to 10 kt. Waves 1 ft or less. A chance of showers
and tstms.

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

$$

ANZ531-190800-
Chesapeake Bay from Pooles Island to Sandy Point-
234 PM EDT Fri Aug 18 2017

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY MORNING...
...SEVERE THUNDERSTORM WATCH 455 IN EFFECT UNTIL 9 PM EDT THIS
EVENING...

.THIS AFTERNOON...S winds 10 kt with gusts to 20 kt. Waves 2 ft.
Tstms likely with showers. Vsby 1 NM or less.
.TONIGHT...SW winds 10 kt with gusts to 20 kt. Waves 2 ft. Showers
with tstms likely. Vsby 1 NM or less.
.SAT...W winds 5 to 10 kt. Gusts up to 20 kt in the morning. Waves
1 to 2 ft.
.SAT NIGHT...W winds 5 kt. Waves less than 1 ft.
.SUN...NW winds around 5 kt. Waves flat.
.SUN NIGHT...SE winds around 5 kt. Waves flat.
.MON...S winds around 5 kt. Waves 1 ft or less. A chance of showers
after midnight.
.TUE...SW winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.

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

$$

ANZ538-190800-
Patapsco River including Baltimore Harbor-
234 PM EDT Fri Aug 18 2017

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EDT SATURDAY...
...SEVERE THUNDERSTORM WATCH 455 IN EFFECT UNTIL 9 PM EDT THIS
EVENING...

.THIS AFTERNOON...S winds 10 kt with gusts to 20 kt. Waves 1 ft.
Tstms likely with showers. Vsby 1 NM or less.
.TONIGHT...W winds 5 to 10 kt. Gusts up to 20 kt until early
morning. Waves 1 ft. Showers with tstms likely. Vsby 1 NM or less.
.SAT...W winds 5 kt. Waves less than 1 ft.
.SAT NIGHT...NW winds around 5 kt. Waves 1 ft or less.
.SUN...NW winds around 5 kt. Waves flat.
.SUN NIGHT...SE winds around 5 kt. Waves flat.
.MON...S winds around 5 kt. Waves flat.
.TUE...SW winds 5 kt. Waves less than 1 ft. A chance of showers and
tstms.

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

$$

ANZ539-190800-
Chester River to Queenstown MD-
234 PM EDT Fri Aug 18 2017

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY MORNING...
...SEVERE THUNDERSTORM WATCH 455 IN EFFECT UNTIL 9 PM EDT THIS
EVENING...

.THIS AFTERNOON...S winds 10 kt with gusts to 20 kt. Waves 1 to
2 ft. Tstms likely with showers. Vsby 1 NM or less.
.TONIGHT...SW winds 10 kt with gusts to 20 kt. Waves 1 to 2 ft.
Showers with tstms likely. Vsby 1 NM or less.
.SAT...W winds 5 to 10 kt. Gusts up to 20 kt in the morning. Waves
1 to 2 ft.
.SAT NIGHT...W winds 5 kt. Waves less than 1 ft.
.SUN...NW winds 5 kt. Waves flat.
.SUN NIGHT...SE winds around 5 kt. Waves flat.
.MON...S winds 5 kt. Waves less than 1 ft. A chance of showers
through the night.
.TUE...SW winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.

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

$$

ANZ532-190800-
Chesapeake Bay from Sandy Point to North Beach-
234 PM EDT Fri Aug 18 2017

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY MORNING...
...SEVERE THUNDERSTORM WATCH 455 IN EFFECT UNTIL 9 PM EDT THIS
EVENING...

.THIS AFTERNOON...S winds 10 kt with gusts to 20 kt. Waves 2 ft.
Showers likely with a chance of tstms. Vsby 1 NM or less.
.TONIGHT...W winds 10 kt. Gusts up to 20 kt. Waves 2 ft. Showers
with tstms likely. Vsby 1 NM or less.
.SAT...W winds 5 to 10 kt. Gusts up to 20 kt in the morning. Waves
1 to 2 ft.
.SAT NIGHT...W winds 5 kt. Waves less than 1 ft.
.SUN...NW winds around 5 kt. Waves 1 ft or less.
.SUN NIGHT...SE winds around 5 kt. Waves 1 ft or less.
.MON...S winds 5 kt. Waves less than 1 ft. A chance of showers
through the night.
.TUE...SW winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.

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

$$

ANZ540-190800-
Eastern Bay-
234 PM EDT Fri Aug 18 2017

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY MORNING...
...SEVERE THUNDERSTORM WATCH 455 IN EFFECT UNTIL 9 PM EDT THIS
EVENING...

.THIS AFTERNOON...S winds 10 kt with gusts to 20 kt. Waves 2 ft.
Showers likely with a chance of tstms. Vsby 1 NM or less.
.TONIGHT...W winds 10 kt. Gusts up to 20 kt. Waves 2 ft. Showers
with tstms likely. Vsby 1 NM or less.
.SAT...W winds 5 to 10 kt. Gusts up to 20 kt in the morning. Waves
1 to 2 ft.
.SAT NIGHT...NW winds around 5 kt. Waves 1 ft or less.
.SUN...NW winds around 5 kt. Waves flat.
.SUN NIGHT...SE winds around 5 kt. Waves flat.
.MON...S winds 5 kt. Waves less than 1 ft. A chance of showers
through the night.
.TUE...SW winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.

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

$$

ANZ533-190800-
Chesapeake Bay from North Beach to Drum Point-
234 PM EDT Fri Aug 18 2017

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY MORNING...
...SEVERE THUNDERSTORM WATCH 455 IN EFFECT UNTIL 9 PM EDT THIS
EVENING...

.THIS AFTERNOON...S winds 10 kt with gusts to 20 kt. Waves 2 ft.
Showers likely with a chance of tstms. Vsby 1 NM or less.
.TONIGHT...W winds 10 kt. Gusts up to 20 kt. Waves 2 ft. Showers
with tstms likely. Vsby 1 NM or less.
.SAT...W winds 5 to 10 kt. Gusts up to 20 kt in the morning. Waves
1 to 2 ft.
.SAT NIGHT...SW winds 5 kt. Waves less than 1 ft.
.SUN...NE winds around 5 kt. Waves 1 ft or less.
.SUN NIGHT...SE winds around 5 kt. Waves 1 ft or less.
.MON...S winds around 5 kt. Waves 1 ft. A chance of showers through
the night.
.TUE...SW winds 5 to 10 kt. Waves 1 to 2 ft. A chance of showers and
tstms.

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

$$

ANZ541-190800-
Choptank River to Cambridge MD and the Little Choptank River-
234 PM EDT Fri Aug 18 2017

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY MORNING...
...SEVERE THUNDERSTORM WATCH 455 IN EFFECT UNTIL 9 PM EDT THIS
EVENING...

.THIS AFTERNOON...S winds 10 kt with gusts to 20 kt. Waves 2 ft.
Showers likely with a chance of tstms. Vsby 1 NM or less.
.TONIGHT...W winds 10 kt. Gusts up to 20 kt. Waves 2 ft. Showers
with tstms likely. Vsby 1 NM or less.
.SAT...W winds 5 to 10 kt. Gusts up to 20 kt in the morning. Waves
1 to 2 ft.
.SAT NIGHT...W winds around 5 kt. Waves 1 ft.
.SUN...N winds around 5 kt. Waves 1 ft or less.
.SUN NIGHT...SE winds around 5 kt. Waves flat.
.MON...S winds around 5 kt. Waves 1 ft or less. A chance of showers
through the night.
.TUE...SW winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.

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

$$

ANZ542-190800-
Patuxent River to Broomes Island MD-
234 PM EDT Fri Aug 18 2017

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EDT SATURDAY...
...SEVERE THUNDERSTORM WATCH 455 IN EFFECT UNTIL 9 PM EDT THIS
EVENING...

.THIS AFTERNOON...S winds 10 kt with gusts to 20 kt. Waves 1 ft.
Showers likely with a chance of tstms. Vsby 1 NM or less.
.TONIGHT...W winds 5 to 10 kt. Gusts up to 20 kt. Waves 1 ft.
Showers with tstms likely. Vsby 1 NM or less.
.SAT...W winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...SW winds around 5 kt. Waves 1 ft.
.SUN...NE winds around 5 kt. Waves 1 ft.
.SUN NIGHT...SE winds around 5 kt. Waves 1 ft.
.MON...S winds around 5 kt. Waves 1 ft. A chance of showers through
the night.
.TUE...SW winds 5 to 10 kt. Waves 1 ft. A chance of showers and
tstms.

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

$$

ANZ534-190800-
Chesapeake Bay from Drum Point to Smith Point-
234 PM EDT Fri Aug 18 2017

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY MORNING...
...SEVERE THUNDERSTORM WATCH 455 IN EFFECT UNTIL 9 PM EDT THIS
EVENING...

.THIS AFTERNOON...S winds 10 to 15 kt with gusts to 20 kt. Waves
2 to 3 ft. A chance of showers with a slight chance of tstms. Vsby
1 NM or less.
.TONIGHT...S winds 10 to 15 kt...becoming W after midnight. Gusts up
to 25 kt. Waves 2 to 3 ft. Showers with tstms likely. Vsby 1 NM or
less.
.SAT...W winds 5 to 10 kt. Gusts up to 20 kt in the morning. Waves
2 ft.
.SAT NIGHT...SW winds 5 to 10 kt. Waves 1 ft.
.SUN...N winds around 5 kt. Waves 1 ft.
.SUN NIGHT...SE winds 5 to 10 kt. Waves 1 ft.
.MON...S winds 5 to 10 kt. Waves 1 to 2 ft. A chance of showers
through the night.
.TUE...SW winds 10 to 15 kt. Waves 1 to 2 ft... building to 2 to
3 ft. A chance of showers and tstms.

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

$$

ANZ543-190800-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
234 PM EDT Fri Aug 18 2017

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY MORNING...
...SEVERE THUNDERSTORM WATCH 455 IN EFFECT UNTIL 9 PM EDT THIS
EVENING...

.THIS AFTERNOON...S winds 10 to 15 kt with gusts to 20 kt. Waves
2 ft. A slight chance of showers and tstms. Vsby 1 NM or less.
.TONIGHT...S winds 10 to 15 kt...becoming W after midnight. Gusts up
to 20 kt. Waves 2 ft. Showers with tstms likely. Vsby 1 NM or less.
.SAT...W winds 5 to 10 kt. Gusts up to 20 kt until late afternoon.
Waves 1 ft.
.SAT NIGHT...SW winds 5 kt. Waves less than 1 ft.
.SUN...NW winds around 5 kt. Waves 1 ft or less.
.SUN NIGHT...SE winds around 5 kt. Waves 1 ft or less.
.MON...S winds 5 to 10 kt. Waves 1 ft. A chance of showers through
the night.
.TUE...SW winds 10 to 15 kt. Waves 1 to 2 ft... building to 2 to
3 ft. A chance of showers and tstms.

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

$$




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