Coastal Waters Forecast
Issued by NWS Boston, MA

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000
FZUS51 KBOX 200516
CWFBOX

Coastal Waters Forecast
National Weather Service Boston/Norton MA
116 AM EDT Fri Apr 20 2018

Coastal waters from the Merrimack River MA to Watch Hill RI out to
25 NM

ANZ200-201800-
116 AM EDT Fri Apr 20 2018

.Synopsis for Massachusetts and Rhode Island coastal waters...
Low pressure will move over the Canadian Maritimes overnight
tonight. Winds will be gusty out of the northwest for Friday
morning. High pressure brings dry weather over the waters this
weekend lasting into Monday. Low pressure will begin to move north
along the coast on Tuesday into Wednesday.

For information on possible hazardous weather beyond the 24-36
hour forecast period, please visit www.weather.gov/boston and
follow the Current Hazards link above the map on the left.

$$

ANZ250-201800-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
116 AM EDT Fri Apr 20 2018

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON...

.REST OF TONIGHT...NW winds 15 to 20 kt with gusts up to 25 kt.
Seas 3 to 5 ft. A slight chance of showers.
.FRI...NW winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 3 to 5 ft.
.FRI NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas
2 to 4 ft.
.SAT...NW winds 10 to 15 kt with gusts up to 20 kt, becoming W
5 to 10 kt in the afternoon. Seas 2 to 4 ft.
.SAT NIGHT...NW winds 5 to 10 kt. Seas around 2 ft.
.SUN...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas
around 2 ft.
.SUN NIGHT...SW winds 5 to 10 kt, becoming NW after midnight.
Seas around 2 ft.
.MON...NW winds 5 to 10 kt. Seas around 2 ft.
.MON NIGHT...S winds 5 to 10 kt. Seas around 2 ft.
.TUE...S winds 10 to 15 kt. Seas 2 to 3 ft.
.TUE NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. A chance of
showers.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ251-201800-
Massachusetts Bay and Ipswich Bay-
116 AM EDT Fri Apr 20 2018

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON...

.REST OF TONIGHT...NW winds 10 to 15 kt with gusts up to 25 kt.
Seas 2 to 3 ft. A slight chance of showers.
.FRI...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
4 ft.
.FRI NIGHT...NW winds 10 to 15 kt with gusts up to 30 kt. Seas
2 to 3 ft.
.SAT...NW winds 10 to 15 kt, diminishing to 5 to 10 kt in the
afternoon. Gusts up to 20 kt. Seas 2 to 3 ft.
.SAT NIGHT...NW winds 5 to 10 kt. Seas around 2 ft.
.SUN...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas
1 foot or less.
.SUN NIGHT...SW winds 5 to 10 kt, becoming NW after midnight.
Seas 1 foot or less.
.MON...NE winds 5 to 10 kt. Seas 1 foot or less.
.MON NIGHT...S winds 5 to 10 kt. Seas around 2 ft.
.TUE...S winds 5 to 10 kt. Seas around 2 ft.
.TUE NIGHT...S winds 5 to 10 kt. Seas around 2 ft. A chance of
showers.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ231-201800-
Cape Cod Bay-
116 AM EDT Fri Apr 20 2018

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON...

.REST OF TONIGHT...NW winds 10 to 15 kt with gusts up to 25 kt.
Seas 2 to 4 ft. A chance of showers.
.FRI...NW winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 4 ft.
.FRI NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas
2 to 3 ft.
.SAT...NW winds 10 to 15 kt with gusts up to 20 kt, diminishing
to 5 to 10 kt in the afternoon. Seas 2 to 3 ft.
.SAT NIGHT...NW winds 5 to 10 kt. Seas 1 foot or less.
.SUN...N winds 5 to 10 kt. Seas 1 foot or less.
.SUN NIGHT...SW winds 5 to 10 kt, becoming NW after midnight.
Seas 1 foot or less.
.MON...NE winds 5 to 10 kt. Seas 1 foot or less.
.MON NIGHT...S winds 5 to 10 kt. Seas 1 foot or less.
.TUE...S winds 5 to 10 kt. Seas 1 foot or less.
.TUE NIGHT...S winds around 10 kt. Seas around 2 ft. A chance of
showers.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ254-201800-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
116 AM EDT Fri Apr 20 2018

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

.REST OF TONIGHT...NW winds 15 to 20 kt with gusts up to 25 kt.
Seas 4 to 6 ft. A chance of showers.
.FRI...NW winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 4 to 6 ft.
.FRI NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas
3 to 5 ft.
.SAT...NW winds 10 to 15 kt, diminishing to 5 to 10 kt in the
afternoon. Gusts up to 20 kt. Seas 2 to 4 ft.
.SAT NIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft.
.SUN...NW winds 5 to 10 kt. Seas 2 to 3 ft.
.SUN NIGHT...SW winds 5 to 10 kt, becoming NW after midnight.
Seas around 2 ft.
.MON...N winds 5 to 10 kt. Seas around 2 ft.
.MON NIGHT...S winds 5 to 10 kt. Seas around 2 ft.
.TUE...S winds 5 to 10 kt. Seas around 2 ft.
.TUE NIGHT...S winds 10 to 15 kt. Seas 3 to 5 ft. A chance of
showers.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ255-201800-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
116 AM EDT Fri Apr 20 2018

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

.REST OF TONIGHT...NW winds 15 to 20 kt with gusts up to 25 kt.
Seas 5 to 8 ft. A chance of showers.
.FRI...W winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to
7 ft.
.FRI NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas
3 to 5 ft.
.SAT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft.
.SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming
NW 5 to 10 kt after midnight. Seas 2 to 3 ft.
.SUN...W winds 5 to 10 kt. Seas around 2 ft.
.SUN NIGHT...SW winds 5 to 10 kt, becoming NW after midnight.
Seas around 2 ft.
.MON...N winds 5 to 10 kt. Seas around 2 ft.
.MON NIGHT...S winds 5 to 10 kt. Seas around 2 ft.
.TUE...SE winds 5 to 10 kt. Seas 2 to 3 ft.
.TUE NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas
4 to 6 ft. A chance of showers.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ256-201800-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
116 AM EDT Fri Apr 20 2018

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

.REST OF TONIGHT...NW winds around 20 kt with gusts up to 30 kt.
Seas 6 to 8 ft.
.FRI...W winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to
7 ft.
.FRI NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas
3 to 5 ft.
.SAT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft.
.SAT NIGHT...NW winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 3 ft.
.SUN...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas
around 2 ft.
.SUN NIGHT...W winds around 10 kt, becoming N after midnight.
Seas around 2 ft.
.MON...S winds 5 to 10 kt. Seas around 2 ft.
.MON NIGHT...S winds 5 to 10 kt. Seas around 2 ft.
.TUE...SE winds 10 to 15 kt. Seas 2 to 3 ft.
.TUE NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas
4 to 7 ft. A chance of showers.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ232-201800-
Nantucket Sound-
116 AM EDT Fri Apr 20 2018

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON...

.REST OF TONIGHT...NW winds 10 to 15 kt with gusts up to 25 kt.
Seas 2 to 4 ft. A chance of showers.
.FRI...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
3 ft.
.FRI NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas
2 to 3 ft.
.SAT...NW winds 10 to 15 kt, becoming W 5 to 10 kt in the
afternoon. Gusts up to 20 kt. Seas around 2 ft.
.SAT NIGHT...NW winds 5 to 10 kt. Seas 1 foot or less.
.SUN...W winds 5 to 10 kt. Seas 1 foot or less.
.SUN NIGHT...SW winds 5 to 10 kt, becoming NW after midnight.
Seas 1 foot or less.
.MON...W winds 5 to 10 kt. Seas 1 foot or less.
.MON NIGHT...S winds 5 to 10 kt. Seas 1 foot or less.
.TUE...S winds 5 to 10 kt. Seas around 2 ft.
.TUE NIGHT...SE winds 10 to 15 kt. Seas 2 to 4 ft. A chance of
showers.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ233-201800-
Vineyard Sound-
116 AM EDT Fri Apr 20 2018

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON...

.REST OF TONIGHT...NW winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 4 ft. A slight chance of showers.
.FRI...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
4 ft.
.FRI NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas
2 to 3 ft.
.SAT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft.
.SAT NIGHT...NW winds 5 to 10 kt. Seas around 2 ft.
.SUN...W winds 5 to 10 kt. Seas 1 foot or less.
.SUN NIGHT...SW winds 5 to 10 kt, becoming NW after midnight.
Seas around 2 ft.
.MON...W winds 5 to 10 kt. Seas 1 foot or less.
.MON NIGHT...S winds 5 to 10 kt. Seas 1 foot or less.
.TUE...S winds 5 to 10 kt. Seas around 2 ft.
.TUE NIGHT...SE winds 10 to 15 kt. Seas 2 to 4 ft. A chance of
showers.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ234-201800-
Buzzards Bay-
116 AM EDT Fri Apr 20 2018

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON...

.REST OF TONIGHT...NW winds 10 to 15 kt with gusts up to 25 kt.
Seas 2 to 4 ft. A slight chance of showers.
.FRI...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
3 ft.
.FRI NIGHT...NW winds 10 to 15 kt, diminishing to 5 to 10 kt
after midnight. Gusts up to 25 kt. Seas around 2 ft.
.SAT...W winds 5 to 10 kt with gusts up to 20 kt. Seas around
2 ft.
.SAT NIGHT...NW winds 5 to 10 kt. Seas 1 foot or less.
.SUN...W winds 5 to 10 kt. Seas 1 foot or less.
.SUN NIGHT...SW winds 5 to 10 kt, becoming NW after midnight.
Seas 1 foot or less.
.MON...W winds 5 to 10 kt. Seas 1 foot or less.
.MON NIGHT...S winds 5 to 10 kt. Seas 1 foot or less.
.TUE...S winds 5 to 10 kt. Seas 1 foot or less.
.TUE NIGHT...SE winds around 10 kt. Seas 2 to 4 ft. A chance of
showers.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ235-201800-
Rhode Island Sound-
116 AM EDT Fri Apr 20 2018

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON...

.REST OF TONIGHT...NW winds 15 to 20 kt with gusts up to 25 kt.
Seas 4 to 6 ft. A slight chance of showers.
.FRI...NW winds 15 to 20 kt, becoming W 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 3 to 5 ft.
.FRI NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas
2 to 4 ft.
.SAT...NW winds 10 to 15 kt, becoming W in the afternoon. Gusts
up to 20 kt. Seas 2 to 3 ft.
.SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming
NW 5 to 10 kt after midnight. Seas around 2 ft.
.SUN...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas
around 2 ft.
.SUN NIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas
around 2 ft.
.MON...W winds 5 to 10 kt. Seas 1 foot or less.
.MON NIGHT...S winds 5 to 10 kt. Seas around 2 ft.
.TUE...S winds 5 to 10 kt. Seas around 2 ft.
.TUE NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 ft. A chance of showers.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ237-201800-
Block Island Sound-
116 AM EDT Fri Apr 20 2018

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON...

.REST OF TONIGHT...NW winds 15 to 20 kt with gusts up to 25 kt.
Seas 3 to 5 ft.
.FRI...NW winds 15 to 20 kt, becoming W 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 3 to 5 ft.
.FRI NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas
2 to 4 ft.
.SAT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft.
.SAT NIGHT...NW winds 5 to 10 kt. Seas around 2 ft.
.SUN...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas
around 2 ft.
.SUN NIGHT...W winds around 10 kt, becoming N after midnight.
Seas around 2 ft.
.MON...SE winds 5 to 10 kt. Seas 1 foot or less.
.MON NIGHT...S winds 5 to 10 kt. Seas around 2 ft.
.TUE...SE winds 5 to 10 kt. Seas around 2 ft.
.TUE NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas
4 to 6 ft. A chance of showers.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ230-201800-
Boston Harbor-
116 AM EDT Fri Apr 20 2018

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON...

.REST OF TONIGHT...NW winds 10 to 15 kt with gusts up to 25 kt.
Waves around 2 ft. A slight chance of showers.
.FRI...NW winds 10 to 15 kt with gusts up to 25 kt. Waves around
2 ft.
.FRI NIGHT...NW winds 5 to 10 kt with gusts up to 25 kt. Waves
around 2 ft.
.SAT...NW winds 5 to 10 kt with gusts up to 20 kt. Waves 1 foot
or less.
.SAT NIGHT...NW winds 5 to 10 kt. Waves 1 foot or less.
.SUN...NW winds 5 to 10 kt. Waves 1 foot or less.
.SUN NIGHT...NW winds around 5 kt. Waves 1 foot or less.
.MON...NE winds around 5 kt. Waves 1 foot or less.
.MON NIGHT...S winds 5 to 10 kt. Waves 1 foot or less.
.TUE...S winds 5 to 10 kt. Waves 1 foot or less.
.TUE NIGHT...S winds 5 to 10 kt. Waves 1 foot or less. A chance
of showers.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ236-201800-
Narragansett Bay-
116 AM EDT Fri Apr 20 2018

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 AM EDT THIS MORNING...

.REST OF TONIGHT...NW winds 10 to 15 kt with gusts up to 25 kt.
Waves 2 to 3 ft. A slight chance of showers.
.FRI...NW winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to
3 ft.
.FRI NIGHT...NW winds 5 to 10 kt with gusts up to 25 kt. Waves
around 2 ft.
.SAT...NW winds 5 to 10 kt. Gusts up to 20 kt in the morning.
Waves around 2 ft.
.SAT NIGHT...NW winds 5 to 10 kt. Waves 1 foot or less.
.SUN...W winds 5 to 10 kt. Waves 1 foot or less.
.SUN NIGHT...W winds 5 to 10 kt, becoming N after midnight. Waves
1 foot or less.
.MON...W winds around 5 kt. Waves 1 foot or less.
.MON NIGHT...S winds 5 to 10 kt. Waves 1 foot or less.
.TUE...S winds 5 to 10 kt. Waves around 2 ft.
.TUE NIGHT...SE winds 5 to 10 kt with gusts up to 20 kt. Waves
2 to 4 ft. A chance of showers.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

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