Coastal Waters Forecast
Issued by NWS Sterling, VA

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FZUS51 KLWX 140232
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
931 PM EST Wed Dec 13 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.

ANZ500-140900-
931 PM EST Wed Dec 13 2017

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

A clipper system will cross the waters tonight. High pressure  will
return for Thursday. A low pressure system will develop as it  moves
up the coast Friday. High pressure will return for Saturday. A
Small Craft Advisory may be needed for portions of the waters Friday
 night through Saturday.

$$

ANZ535-140900-
Tidal Potomac from Key Bridge to Indian Head-
931 PM EST Wed Dec 13 2017

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

.REST OF TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves
1 ft. A chance of snow late this evening with vsby 1 to 3 NM.
.THU...W winds 10 to 15 kt...becoming NW 15 to 20 kt in the late
morning and afternoon. Gusts up to 30 kt... diminishing to 20 kt
late. Waves 1 to 2 ft.
.THU NIGHT...N winds 10 to 15 kt...becoming NE 5 kt after midnight.
Waves 1 ft.
.FRI...S winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...W winds 5 to 10 kt. Waves 1 ft.
.SAT...W winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...E winds around 5 kt. Waves 1 ft or less.
.SUN...SW winds around 5 kt. Waves 1 ft. A chance of showers through
the night.
.MON...W winds around 5 kt. Waves 1 ft.

$$

ANZ536-140900-
Tidal Potomac from Indian Head to Cobb Island-
931 PM EST Wed Dec 13 2017

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

.REST OF TONIGHT...SW winds 15 kt with gusts to 25 kt. Waves 1 to
2 ft. A slight chance of snow late this evening with vsby 1 to 3 NM.
.THU...SW winds 15 kt...becoming NW in the late morning and
afternoon. Gusts up to 30 kt...diminishing to 20 kt late. Waves 2 to
3 ft.
.THU NIGHT...NE winds 5 to 10 kt. Waves 1 ft.
.FRI...SE winds 5 to 10 kt. Waves 1 ft.
.FRI NIGHT...W winds 5 to 10 kt. Waves 1 ft.
.SAT...W winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...SW winds around 5 kt. Waves 1 ft or less.
.SUN...SW winds around 5 kt. Waves 1 ft. A chance of showers through
the night.
.MON...W winds 5 kt. Waves less than 1 ft. A chance of showers
through the day.

$$

ANZ537-140900-
Tidal Potomac from Cobb Island to Smith Point-
931 PM EST Wed Dec 13 2017

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING...

.REST OF TONIGHT...SW winds 20 to 25 kt with gusts to 30 kt. Waves
2 to 3 ft. A chance of snow late this evening with vsby 1 to 3 NM.
.THU...NW winds 20 to 25 kt. Gusts up to 35 kt... diminishing to
25 kt late. Waves 4 ft.
.THU NIGHT...N winds 10 to 15 kt. Gusts up to 20 kt. Waves 2 to
3 ft.
.FRI...E winds 5 to 10 kt. Waves 1 to 2 ft.
.FRI NIGHT...W winds 10 to 15 kt with gusts to 25 kt. Waves 1 to
2 ft.
.SAT...W winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SAT NIGHT...W winds 5 to 10 kt. Waves 1 ft or less.
.SUN...SW winds 5 to 10 kt. Waves 1 ft or less. A chance of showers
through the night.
.MON...W winds 5 kt. Waves less than 1 ft. A chance of showers. A
chance of snow showers through the night.

$$

ANZ530-140900-
Chesapeake Bay north of Pooles Island-
931 PM EST Wed Dec 13 2017

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

.REST OF TONIGHT...SW winds 15 kt with gusts to 25 kt. Waves 1 to
2 ft...except flat near the mouth of the Susquehanna. Snow likely
late this evening, then a slight chance of snow. Vsby 1 to 3 NM.
.THU...W winds 15 to 20 kt with gusts to 30 kt... becoming NW with
gusts to 30 kt in the late morning and afternoon. Waves 2 ft.
.THU NIGHT...NW winds 10 to 15 kt with gusts to 20 kt...becoming N
5 kt late. Waves 1 ft.
.FRI...S winds 5 to 10 kt. Waves 1 ft or less. A chance of snow
showers.
.FRI NIGHT...W winds 10 to 15 kt. Waves 1 ft.
.SAT...W winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SAT NIGHT...N winds 5 to 10 kt. Waves 1 ft or less.
.SUN...SW winds around 5 kt. Waves 1 ft or less. A chance of showers
through the night.
.MON...W winds 5 kt. Waves less than 1 ft.

$$

ANZ531-140900-
Chesapeake Bay from Pooles Island to Sandy Point-
931 PM EST Wed Dec 13 2017

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING...

.REST OF TONIGHT...SW winds 15 to 20 kt with gusts to 30 kt. Waves
2 to 3 ft. A chance of snow late this evening with vsby 1 to 3 NM.
.THU...W winds 15 to 20 kt...becoming NW 20 to 25 kt in the late
morning and afternoon. Gusts up to 30 kt. Waves 3 ft.
.THU NIGHT...N winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft.
.FRI...SE winds 5 to 10 kt. Waves 1 ft. A chance of snow showers.
.FRI NIGHT...W winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft.
.SAT...W winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SAT NIGHT...N winds 5 to 10 kt. Waves 1 ft or less.
.SUN...SW winds 5 kt. Waves less than 1 ft. A chance of showers
through the night.
.MON...W winds 5 kt. Waves less than 1 ft.

$$

ANZ538-140900-
Patapsco River including Baltimore Harbor-
931 PM EST Wed Dec 13 2017

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

.REST OF TONIGHT...SW winds 15 kt with gusts to 25 kt. Waves 1 ft. A
chance of snow late this evening with vsby 1 to 3 NM.
.THU...W winds 15 to 20 kt...becoming NW in the late morning and
afternoon. Gusts up to 30 kt...diminishing to 20 kt late. Waves
2 ft.
.THU NIGHT...N winds 10 to 15 kt with gusts to 20 kt...diminishing
to 5 kt late. Waves 1 ft or less.
.FRI...S winds 5 to 10 kt. Waves 1 ft or less. A chance of snow
showers.
.FRI NIGHT...W winds 10 to 15 kt. Waves 1 ft or less.
.SAT...W winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.SAT NIGHT...NW winds 5 to 10 kt in the evening... becoming light.
Waves 1 ft or less.
.SUN...SW winds around 5 kt. Waves 1 ft or less. A chance of showers
through the night.
.MON...W winds 5 kt. Waves less than 1 ft.

$$

ANZ539-140900-
Chester River to Queenstown MD-
931 PM EST Wed Dec 13 2017

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING...

.REST OF TONIGHT...SW winds 15 to 20 kt with gusts to 25 kt. Waves
2 to 3 ft. A chance of snow late this evening with vsby 1 to 3 NM.
.THU...W winds 20 kt...becoming NW in the late morning and
afternoon. Gusts up to 30 kt. Waves 3 ft.
.THU NIGHT...N winds 10 to 15 kt with gusts to 20 kt...becoming NE
5 kt late. Waves 1 to 2 ft.
.FRI...SE winds 5 to 10 kt. Waves 1 ft or less. A chance of snow
showers.
.FRI NIGHT...W winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft.
.SAT...W winds 15 kt with gusts to 20 kt. Waves 2 ft.
.SAT NIGHT...N winds 5 to 10 kt. Waves 1 ft or less.
.SUN...SW winds 5 kt. Waves less than 1 ft. A chance of showers
through the night.
.MON...W winds 5 kt. Waves less than 1 ft.

$$

ANZ532-140900-
Chesapeake Bay from Sandy Point to North Beach-
931 PM EST Wed Dec 13 2017

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING...

.REST OF TONIGHT...SW winds 20 kt with gusts to 30 kt. Waves 2 to
3 ft...building to 4 ft late. A chance of snow late this evening
with vsby 1 to 3 NM.
.THU...W winds 20 kt...becoming NW in the late morning and
afternoon. Gusts up to 30 kt. Waves 3 ft.
.THU NIGHT...N winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft.
.FRI...SE winds 5 to 10 kt. Waves 1 ft. A chance of snow showers.
.FRI NIGHT...W winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft.
.SAT...W winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SAT NIGHT...NE winds 5 to 10 kt. Waves 1 ft or less.
.SUN...SW winds 5 to 10 kt. Waves 1 ft or less. A chance of showers
through the night.
.MON...W winds 5 kt. Waves less than 1 ft.

$$

ANZ540-140900-
Eastern Bay-
931 PM EST Wed Dec 13 2017

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING...

.REST OF TONIGHT...SW winds 15 to 20 kt with gusts to 30 kt. Waves
2 to 3 ft. A chance of snow late this evening with vsby 1 to 3 NM.
.THU...NW winds 20 to 25 kt. Gusts up to 30 kt. Waves 3 ft.
.THU NIGHT...N winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft.
.FRI...SE winds 5 to 10 kt. Waves 1 ft. A chance of snow showers.
.FRI NIGHT...W winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft.
.SAT...W winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SAT NIGHT...N winds 5 to 10 kt. Waves 1 ft or less.
.SUN...SW winds 5 kt. Waves less than 1 ft. A chance of showers
through the night.
.MON...W winds 5 kt. Waves less than 1 ft.

$$

ANZ533-140900-
Chesapeake Bay from North Beach to Drum Point-
931 PM EST Wed Dec 13 2017

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING...

.REST OF TONIGHT...SW winds 20 kt with gusts to 30 kt. Waves 2 to
3 ft...building to 4 ft late. A chance of snow late this evening
with vsby 1 to 3 NM.
.THU...W winds 20 to 25 kt...becoming NW 15 to 20 kt in the
afternoon. Gusts up to 35 kt...diminishing to 25 kt late. Waves
4 ft.
.THU NIGHT...N winds 10 to 15 kt. Gusts up to 20 kt. Waves 2 to
3 ft.
.FRI...SE winds 5 to 10 kt. Waves 1 ft. A chance of snow showers.
.FRI NIGHT...W winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft.
.SAT...W winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SAT NIGHT...NW winds 5 to 10 kt...becoming NE after midnight. Waves
1 ft or less.
.SUN...SW winds 5 to 10 kt. Waves 1 ft or less... building to 2 ft.
A chance of showers through the night.
.MON...W winds 5 kt. Waves less than 1 ft.

$$

ANZ541-140900-
Choptank River to Cambridge MD and the Little Choptank River-
931 PM EST Wed Dec 13 2017

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING...

.REST OF TONIGHT...SW winds 20 to 25 kt with gusts to 30 kt. Waves
2 to 3 ft. A chance of snow late this evening with vsby 1 to 3 NM.
.THU...NW winds 20 to 25 kt. Gusts up to 35 kt... diminishing to
25 kt late. Waves 3 ft.
.THU NIGHT...N winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft.
.FRI...SE winds 5 to 10 kt. Waves 1 ft. A chance of snow showers.
.FRI NIGHT...W winds 5 to 10 kt...increasing to 15 to 20 kt with
gusts to 25 kt after midnight. Waves 1 to 2 ft.
.SAT...W winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SAT NIGHT...N winds 5 to 10 kt. Waves 1 ft or less.
.SUN...SW winds 5 to 10 kt. Waves 1 ft or less. A chance of showers
through the night.
.MON...W winds 5 kt. Waves less than 1 ft.

$$

ANZ542-140900-
Patuxent River to Broomes Island MD-
931 PM EST Wed Dec 13 2017

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

.REST OF TONIGHT...SW winds 15 to 20 kt with gusts to 25 kt. Waves
1 ft. A chance of snow late this evening with vsby 1 to 3 NM.
.THU...NW winds 15 to 20 kt with gusts to 30 kt. Waves 1 to 2 ft.
.THU NIGHT...N winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.FRI...SE winds 5 to 10 kt. Waves 1 ft. A chance of snow showers.
.FRI NIGHT...W winds 10 to 15 kt. Waves 1 ft.
.SAT...W winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.SAT NIGHT...NW winds 5 to 10 kt. Waves 1 ft or less.
.SUN...SW winds around 5 kt. Waves 1 ft. A chance of showers through
the night.
.MON...W winds 5 kt. Waves less than 1 ft. A chance of showers
through the day.

$$

ANZ534-140900-
Chesapeake Bay from Drum Point to Smith Point-
931 PM EST Wed Dec 13 2017

...GALE WARNING IN EFFECT THROUGH THURSDAY MORNING...
...SMALL CRAFT ADVISORY IN EFFECT FROM THURSDAY AFTERNOON THROUGH
THURSDAY EVENING...

.REST OF TONIGHT...SW winds 20 to 25 kt with gusts to 35 kt. Waves
3 ft...building to 5 ft. A chance of snow late this evening with
vsby 1 to 3 NM.
.THU...W winds 25 kt with gusts to 35 kt...becoming NW with gusts to
30 kt in the afternoon. Waves 5 ft.
.THU NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt. Waves 2 to
3 ft.
.FRI...E winds 10 to 15 kt. Waves 1 to 2 ft. A chance of snow
showers.
.FRI NIGHT...W winds 15 to 20 kt with gusts to 25 kt. Waves 1 ft...
building to 3 ft after midnight.
.SAT...W winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.
.SAT NIGHT...NW winds 10 to 15 kt...diminishing to 5 kt after
midnight. Waves 1 to 2 ft.
.SUN...SW winds 5 to 10 kt. Waves 1 to 2 ft. A chance of showers
through the night.
.MON...W winds 5 to 10 kt. Waves 1 to 2 ft. A chance of showers. A
chance of snow showers through the night.

$$

ANZ543-140900-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
931 PM EST Wed Dec 13 2017

...GALE WARNING IN EFFECT THROUGH THURSDAY MORNING...
...SMALL CRAFT ADVISORY IN EFFECT FROM THURSDAY AFTERNOON THROUGH
THURSDAY EVENING...

.REST OF TONIGHT...SW winds 20 to 25 kt with gusts to 35 kt. Waves
2 to 3 ft...building to 4 ft late. A chance of snow late this
evening with vsby 1 to 3 NM.
.THU...W winds 25 kt with gusts to 35 kt...becoming NW with gusts to
30 kt in the afternoon. Waves 3 ft.
.THU NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt. Waves 1 to
2 ft.
.FRI...E winds 5 to 10 kt. Waves 1 ft. A chance of snow showers.
.FRI NIGHT...W winds 15 to 20 kt with gusts to 25 kt. Waves 1 to
2 ft.
.SAT...W winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.SAT NIGHT...NW winds 10 to 15 kt with gusts to 20 kt...becoming W
around 5 kt after midnight. Waves 1 ft or less.
.SUN...SW winds 5 to 10 kt. Waves 1 ft or less... building to 2 ft.
A chance of showers through the night.
.MON...W winds 5 to 10 kt. Waves 1 to 2 ft. A chance of showers. A
chance of snow showers through the night.

$$




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