Coastal Waters Forecast
Issued by NWS Sterling, VA

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FZUS51 KLWX 211432
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
1032 AM EDT Sat Jul 21 2018

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.

ANZ500-212000-
1032 AM EDT Sat Jul 21 2018

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

An area of low pressure will move near the Delmarva coastline  today
before another low approaches from the west on Sunday and  stalls
out into early next week. Gale conditions are possible over  the
lower Maryland Chesapeake Bay today.

$$

ANZ535-212000-
Tidal Potomac from Key Bridge to Indian Head-
1032 AM EDT Sat Jul 21 2018

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...NE winds 10 to 15 kt. Gusts up to 20 kt...
increasing to 25 kt late. Waves 1 ft. Rain. Vsby 1 to 3 NM...
decreasing to 1 NM or less this afternoon.
.TONIGHT...N winds 15 to 20 kt with gusts to 25 kt... becoming NW
10 to 15 kt with gusts to 20 kt after midnight, then becoming SW
around 5 kt late. Waves 1 to 2 ft. Rain. Patchy fog. Vsby 1 NM or
less.
.SUN...SE winds 5 to 10 kt. Waves 1 ft. Showers likely with a chance
of tstms.
.SUN NIGHT...SE winds 5 to 10 kt. Waves 1 ft. Showers likely with a
chance of tstms.
.MON...SE winds 5 to 10 kt. Waves 1 ft. Showers likely with a chance
of tstms.
.MON NIGHT...SE winds 5 to 10 kt. Waves 1 ft. Showers likely.
.TUE...SE winds 5 to 10 kt. Waves 1 ft. Showers and tstms, then a
chance of showers after midnight.
.WED...S winds 5 kt. Waves less than 1 ft. Tstms likely. Showers
likely.

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

$$

ANZ536-212000-
Tidal Potomac from Indian Head to Cobb Island-
1032 AM EDT Sat Jul 21 2018

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...NE winds 10 to 15 kt. Gusts up to 25 kt this
afternoon. Waves 1 to 2 ft. Rain late this morning, then rain with a
slight chance of tstms this afternoon. Vsby 1 to 3 NM...decreasing
to 1 NM or less this afternoon.
.TONIGHT...NW winds 15 to 20 kt with gusts to 30 kt... becoming W
5 kt late. Waves 1 to 2 ft. Rain likely. Patchy fog. Vsby 1 to 3 NM.
.SUN...SE winds 5 to 10 kt. Waves 1 ft. Showers likely with a chance
of tstms.
.SUN NIGHT...SE winds 5 to 10 kt. Waves 1 ft. Showers likely with a
chance of tstms.
.MON...SE winds 5 to 10 kt. Waves 1 ft. Showers likely with a chance
of tstms.
.MON NIGHT...SE winds 5 to 10 kt. Waves 1 ft. Showers likely.
.TUE...SE winds 5 to 10 kt. Waves 1 ft. Showers and tstms, then a
chance of showers after midnight.
.WED...S winds 5 to 10 kt. Waves 1 ft. Tstms likely. Showers likely.


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

$$

ANZ537-212000-
Tidal Potomac from Cobb Island to Smith Point-
1032 AM EDT Sat Jul 21 2018

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...NE winds 15 to 20 kt. Gusts up to 25 kt...
increasing to 35 kt late. Waves 2 to 3 ft. Rain late this morning,
then rain with a slight chance of tstms this afternoon. Vsby 1 to
3 NM...decreasing to 1 NM or less this afternoon.
.TONIGHT...N winds 20 kt with gusts to 35 kt...becoming W with gusts
to 30 kt late in the evening, then becoming SW 10 to 15 kt with
gusts to 25 kt after midnight. Waves 2 to 3 ft. Rain likely. Patchy
fog. Vsby 1 to 3 NM.
.SUN...SE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. Showers
likely with a chance of tstms.
.SUN NIGHT...SE winds 10 to 15 kt with gusts to 20 kt. Waves 3 ft.
Showers likely with a chance of tstms.
.MON...S winds 10 to 15 kt with gusts to 25 kt. Waves 3 ft. Showers
likely with a chance of tstms.
.MON NIGHT...SE winds 10 to 15 kt with gusts to 20 kt. Waves 3 ft.
Showers likely.
.TUE...SE winds 10 to 15 kt. Waves 2 to 3 ft. Showers and tstms
likely, then a chance of showers after midnight.
.WED...S winds 5 to 10 kt. Waves 2 to 3 ft...subsiding to 1 ft.
Showers and tstms likely, then a chance of showers after midnight.

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

$$

ANZ530-212000-
Chesapeake Bay north of Pooles Island-
1032 AM EDT Sat Jul 21 2018

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...NE winds 10 to 15 kt. Gusts up to 25 kt...
increasing to 30 kt late. Waves 1 to 2 ft...except flat near the
mouth of the Susquehanna. Showers likely late this morning, then
rain this afternoon with vsby 1 NM or less.
.TONIGHT...N winds 20 to 25 kt with gusts to 35 kt... becoming SW
5 to 10 kt late. Waves 1 to 2 ft. Rain. Patchy fog. Vsby 1 NM or
less.
.SUN...SE winds 5 to 10 kt. Waves 1 ft. Showers likely with a chance
of tstms.
.SUN NIGHT...SE winds 10 kt. Waves 1 ft. Showers likely with a
chance of tstms.
.MON...S winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft. Showers
likely with a chance of tstms.
.MON NIGHT...SE winds 10 kt. Waves 1 ft. Showers likely.
.TUE...SE winds 5 to 10 kt. Waves 1 ft. Showers and tstms likely,
then a chance of showers after midnight.
.WED...S winds 5 to 10 kt. Waves 1 ft. Tstms likely. Showers likely.


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

$$

ANZ531-212000-
Chesapeake Bay from Pooles Island to Sandy Point-
1032 AM EDT Sat Jul 21 2018

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...NE winds 15 to 20 kt with gusts to 30 kt. Waves
2 to 3 ft. Showers likely late this morning, then rain this
afternoon with vsby 1 NM or less.
.TONIGHT...NE winds 20 to 25 kt with gusts to 35 kt... becoming NW
15 to 20 kt with gusts to 30 kt after midnight, then becoming SW
5 to 10 kt late. Waves 2 to 3 ft. Rain. Patchy fog. Vsby 1 NM or
less.
.SUN...SE winds 5 to 10 kt. Waves 1 ft. Showers likely with a chance
of tstms.
.SUN NIGHT...SE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
Showers likely with a chance of tstms.
.MON...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. Showers
likely with a chance of tstms.
.MON NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
Showers likely.
.TUE...S winds 5 to 10 kt. Waves 1 to 2 ft. Showers and tstms
likely, then a chance of showers after midnight.
.WED...S winds 5 to 10 kt. Waves 1 ft. Tstms likely. Showers likely.


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

$$

ANZ538-212000-
Patapsco River including Baltimore Harbor-
1032 AM EDT Sat Jul 21 2018

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...NE winds 15 kt with gusts to 25 kt. Waves 1 ft.
Showers likely late this morning, then rain this afternoon with vsby
1 NM or less.
.TONIGHT...NE winds 20 to 25 kt with gusts to 35 kt... becoming NW
10 to 15 kt with gusts to 25 kt after midnight, then becoming W 5 to
10 kt late. Waves 1 ft. Rain. Patchy fog. Vsby 1 NM or less.
.SUN...SE winds 5 to 10 kt. Waves 1 ft or less. Showers likely with
a chance of tstms.
.SUN NIGHT...SE winds 10 kt. Waves 1 ft. Showers likely with a
chance of tstms.
.MON...S winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft. Showers
likely with a chance of tstms.
.MON NIGHT...SE winds 10 kt with gusts to 20 kt. Waves 1 ft. Showers
likely.
.TUE...S winds 5 to 10 kt. Waves 1 ft. Showers and tstms likely,
then a chance of showers after midnight.
.WED...S winds 5 to 10 kt. Waves 1 ft. Tstms likely. Showers likely.


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

$$

ANZ539-212000-
Chester River to Queenstown MD-
1032 AM EDT Sat Jul 21 2018

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...NE winds 15 kt. Gusts up to 25 kt... increasing to
30 kt late. Waves 1 to 2 ft. Showers likely late this morning, then
rain this afternoon with vsby 1 NM or less.
.TONIGHT...NE winds 20 to 25 kt with gusts to 35 kt... becoming W
15 to 20 kt with gusts to 30 kt after midnight, then becoming SW
5 to 10 kt late. Waves 2 to 3 ft. Rain. Patchy fog. Vsby 1 NM or
less.
.SUN...SE winds 5 to 10 kt. Waves 1 ft. Showers likely with a chance
of tstms.
.SUN NIGHT...SE winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft. Showers likely with a chance of tstms.
.MON...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. Showers
likely with a chance of tstms.
.MON NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
Showers likely.
.TUE...S winds 10 kt. Waves 1 ft. Showers and tstms likely, then a
chance of showers after midnight.
.WED...S winds 10 kt. Waves 1 ft. Tstms likely. Showers likely.

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

$$

ANZ532-212000-
Chesapeake Bay from Sandy Point to North Beach-
1032 AM EDT Sat Jul 21 2018

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...NE winds 15 to 20 kt with gusts to 30 kt. Waves
2 to 3 ft. Rain late this morning, then rain with a slight chance of
tstms this afternoon. Vsby 1 to 3 NM...decreasing to 1 NM or less
this afternoon.
.TONIGHT...N winds 20 to 25 kt with gusts to 35 kt... becoming W
15 to 20 kt with gusts to 30 kt after midnight, then becoming SW
5 to 10 kt late. Waves 2 to 3 ft. Rain. Patchy fog. Vsby 1 NM or
less.
.SUN...SE winds 5 to 10 kt. Waves 1 ft. Showers likely with a chance
of tstms.
.SUN NIGHT...SE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
Showers likely with a chance of tstms.
.MON...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. Showers
likely with a chance of tstms.
.MON NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
Showers likely.
.TUE...S winds 5 to 10 kt. Waves 1 to 2 ft. Showers and tstms
likely, then a chance of showers after midnight.
.WED...S winds 10 kt. Waves 1 to 2 ft. Tstms likely. Showers likely.


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

$$

ANZ540-212000-
Eastern Bay-
1032 AM EDT Sat Jul 21 2018

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...NE winds 15 to 20 kt with gusts to 30 kt. Waves
2 to 3 ft. Showers likely late this morning, then rain with a slight
chance of tstms this afternoon with vsby 1 NM or less.
.TONIGHT...NE winds 20 to 25 kt with gusts to 35 kt... becoming W
15 to 20 kt with gusts to 30 kt after midnight, then becoming SW
5 to 10 kt late. Waves 2 ft. Rain. Patchy fog. Vsby 1 NM or less.
.SUN...SE winds 5 to 10 kt. Waves 1 ft. Showers likely with a chance
of tstms.
.SUN NIGHT...SE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
Showers likely with a chance of tstms.
.MON...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. Showers
likely with a chance of tstms.
.MON NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
Showers likely.
.TUE...S winds 10 kt. Waves 1 to 2 ft. Showers and tstms likely,
then a chance of showers after midnight.
.WED...S winds 10 kt. Waves 1 ft. Tstms likely. Showers likely.

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

$$

ANZ533-212000-
Chesapeake Bay from North Beach to Drum Point-
1032 AM EDT Sat Jul 21 2018

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...NE winds 15 to 20 kt with gusts to 30 kt. Waves
2 to 3 ft. Rain late this morning, then rain with a slight chance of
tstms this afternoon. Vsby 1 to 3 NM...decreasing to 1 NM or less
this afternoon.
.TONIGHT...N winds 20 to 25 kt with gusts to 35 kt... becoming NW
with gusts to 35 kt late in the evening, then becoming W with gusts
to 30 kt after midnight...becoming SW 5 to 10 kt late. Waves 2 to
3 ft. Rain. Patchy fog. Vsby 1 NM or less.
.SUN...SE winds 10 to 15 kt. Waves 1 ft. Showers likely with a
chance of tstms.
.SUN NIGHT...SE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
Showers likely with a chance of tstms.
.MON...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 to 3 ft.
Showers likely with a chance of tstms.
.MON NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
Showers likely.
.TUE...S winds 10 to 15 kt. Waves 2 ft. Showers and tstms likely,
then a chance of showers after midnight.
.WED...S winds 10 kt. Waves 2 to 3 ft. Tstms likely. Showers likely.


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

$$

ANZ541-212000-
Choptank River to Cambridge MD and the Little Choptank River-
1032 AM EDT Sat Jul 21 2018

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...NE winds 15 to 20 kt with gusts to 30 kt. Waves
2 ft. Rain late this morning, then rain with a slight chance of
tstms this afternoon. Vsby 1 to 3 NM...decreasing to 1 NM or less
this afternoon.
.TONIGHT...N winds 20 to 25 kt with gusts to 35 kt... becoming W
15 to 20 kt with gusts to 30 kt after midnight, then becoming SW
5 to 10 kt late. Waves 2 ft. Rain. Patchy fog. Vsby 1 NM or less.
.SUN...SE winds 10 to 15 kt. Waves 1 ft. Showers likely with a
chance of tstms.
.SUN NIGHT...SE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
Showers likely with a chance of tstms.
.MON...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. Showers
likely with a chance of tstms.
.MON NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
Showers likely.
.TUE...S winds 10 to 15 kt. Waves 1 to 2 ft. Showers and tstms
likely, then a chance of showers after midnight.
.WED...S winds 10 kt. Waves 1 to 2 ft. Tstms likely. Showers likely.


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

$$

ANZ542-212000-
Patuxent River to Broomes Island MD-
1032 AM EDT Sat Jul 21 2018

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...NE winds 15 to 20 kt. Gusts up to 25 kt...
increasing to 30 kt late. Waves 1 ft. Rain late this morning, then
rain with a slight chance of tstms this afternoon. Vsby 1 to 3 NM...
decreasing to 1 NM or less this afternoon.
.TONIGHT...N winds 15 to 20 kt with gusts to 30 kt... becoming NW
with gusts to 30 kt late in the evening, then becoming W 10 to 15 kt
with gusts to 25 kt after midnight... becoming SW 5 kt late. Waves
1 to 2 ft. Rain likely. Patchy fog. Vsby 1 to 3 NM.
.SUN...SE winds 5 to 10 kt. Waves 1 ft. Showers likely with a chance
of tstms.
.SUN NIGHT...SE winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
Showers likely with a chance of tstms.
.MON...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. Showers
likely with a chance of tstms.
.MON NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
Showers likely.
.TUE...S winds 5 to 10 kt. Waves 1 ft. Showers and tstms likely,
then a chance of showers after midnight.
.WED...S winds 5 to 10 kt. Waves 1 ft. Tstms likely. Showers likely.


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

$$

ANZ534-212000-
Chesapeake Bay from Drum Point to Smith Point-
1032 AM EDT Sat Jul 21 2018

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...NE winds 20 to 25 kt with gusts to 35 kt. Waves
2 to 3 ft. Rain late this morning, then rain with a slight chance of
tstms this afternoon. Vsby 1 to 3 NM...decreasing to 1 NM or less
this afternoon.
.TONIGHT...NE winds 20 to 25 kt with gusts to 35 kt... becoming W
15 to 20 kt with gusts to 35 kt in the late evening and early
morning, then becoming SW 5 to 10 kt late. Waves 2 to 3 ft. Rain
likely. Patchy fog. Vsby 1 to 3 NM.
.SUN...SE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. Showers
likely with a chance of tstms.
.SUN NIGHT...S winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.
Showers likely with a chance of tstms.
.MON...S winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft. Showers
likely with a chance of tstms.
.MON NIGHT...S winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.
Showers likely.
.TUE...S winds 10 to 15 kt. Waves 2 to 3 ft. Showers and tstms
likely, then a chance of showers after midnight.
.WED...S winds 10 to 15 kt. Waves 3 ft. Showers and tstms likely,
then a chance of showers after midnight.

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

$$

ANZ543-212000-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
1032 AM EDT Sat Jul 21 2018

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...E winds 15 to 20 kt with gusts to 25 kt... becoming
NE 25 kt with gusts to 35 kt late. Waves 1 to 2 ft. Rain late this
morning, then rain with a slight chance of tstms this afternoon.
Vsby 1 to 3 NM...decreasing to 1 NM or less this afternoon.
.TONIGHT...NE winds 15 to 20 kt with gusts to 35 kt... becoming W
with gusts to 35 kt in the late evening and early morning, then
becoming SW 5 to 10 kt late. Waves 2 ft. Rain likely. Patchy fog.
Vsby 1 to 3 NM.
.SUN...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
Showers likely with a chance of tstms.
.SUN NIGHT...S winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft.
Showers likely with a chance of tstms.
.MON...S winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft. Showers
likely with a chance of tstms.
.MON NIGHT...S winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft. A
chance of showers.
.TUE...S winds 10 to 15 kt. Waves 1 to 2 ft. Showers and tstms
likely, then a chance of showers after midnight.
.WED...S winds 10 to 15 kt. Waves 3 ft. Showers and tstms likely,
then a chance of showers after midnight.

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

$$




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