Coastal Waters Forecast
Issued by NWS Boston, MA

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FZUS51 KBOX 171116
CWFBOX

Coastal Waters Forecast
National Weather Service Boston/Norton MA
716 AM EDT Tue Apr 17 2018

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

ANZ200-180000-
716 AM EDT Tue Apr 17 2018

.Synopsis for Massachusetts and Rhode Island coastal waters...
Low pressure departs through the Maritimes today and Wednesday.
Brief weak high pres will move over the water Wed, followed by
another low pressure area on Thursday. This low should linger  near
the Maritimes for Fri.

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.

$$

ANZ250-180000-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
716 AM EDT Tue Apr 17 2018

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

.TODAY...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 6 to
9 ft. Patchy fog this morning.
.TONIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
7 ft.
.WED...W winds 15 to 20 kt, becoming SW 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 4 to 6 ft.
.WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming
SW 5 to 10 kt after midnight. Seas 3 to 5 ft. A chance of rain.
.THU...SE winds 5 to 10 kt, becoming E in the afternoon. Seas
2 to 4 ft. Rain likely. Vsby 1 to 3 NM.
.THU NIGHT...N winds 5 to 10 kt, becoming NW 10 to 15 kt after
midnight. Seas 2 to 4 ft. Rain likely. Vsby 1 to 3 NM.
.FRI...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. A chance of showers.
.FRI NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft.
.SAT...NW winds 5 to 10 kt. Seas 2 to 3 ft.
.SAT NIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft.

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.

$$

ANZ251-180000-
Massachusetts Bay and Ipswich Bay-
716 AM EDT Tue Apr 17 2018

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

.TODAY...W winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
7 ft.
.TONIGHT...W winds 5 to 10 kt, increasing to 10 to 15 kt after
midnight. Gusts up to 20 kt. Seas 3 to 5 ft.
.WED...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
4 ft.
.WED NIGHT...W winds 5 to 10 kt. Gusts up to 20 kt in the
evening. Seas 2 to 4 ft. A chance of rain. Vsby 1 to 3 NM.
.THU...SE winds 5 to 10 kt, becoming NE in the afternoon. Seas
2 to 3 ft. Rain likely. Vsby 1 to 3 NM.
.THU NIGHT...N winds 5 to 10 kt. Seas 2 to 3 ft. Rain likely.
Vsby 1 to 3 NM.
.FRI...NW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers.
.FRI NIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft.
.SAT...NW winds 5 to 10 kt. Seas 2 to 3 ft.
.SAT NIGHT...NW winds 5 to 10 kt. Seas around 2 ft.

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.

$$

ANZ231-180000-
Cape Cod Bay-
716 AM EDT Tue Apr 17 2018

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

.TODAY...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft.
.TONIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
around 2 ft.
.WED...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
3 ft.
.WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming
SW 5 to 10 kt after midnight. Seas around 2 ft. A chance of rain.
.THU...E winds 5 to 10 kt. Seas around 2 ft. Rain likely.
.THU NIGHT...NW winds 5 to 10 kt. Seas around 2 ft. A chance of
rain.
.FRI...NW winds around 10 kt with gusts up to 20 kt. Seas around
2 ft. A chance of showers.
.FRI NIGHT...NW winds 5 to 10 kt with gusts up to 20 kt. Seas
2 to 3 ft.
.SAT...NW winds 5 to 10 kt. Seas 2 to 3 ft.
.SAT NIGHT...NW winds 5 to 10 kt. Seas 1 foot or less.

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.

$$

ANZ254-180000-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
716 AM EDT Tue Apr 17 2018

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

.TODAY...SW winds 10 to 15 kt, increasing to 15 to 20 kt this
afternoon. Gusts up to 30 kt. Seas 6 to 9 ft.
.TONIGHT...SW winds 15 to 20 kt, becoming W 10 to 15 kt after
midnight. Gusts up to 30 kt. Seas 5 to 8 ft.
.WED...W winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to
8 ft.
.WED NIGHT...W winds 15 to 20 kt with gusts up to 30 kt, becoming
SW 5 to 10 kt after midnight. Seas 4 to 6 ft.
.THU...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. A chance of rain.
.THU NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas
4 to 6 ft. A chance of showers.
.FRI...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. A chance of showers.
.FRI NIGHT...NW winds 5 to 10 kt. Seas 3 to 5 ft.
.SAT...NW winds 5 to 10 kt. Seas 2 to 4 ft.
.SAT NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft.

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.

$$

ANZ255-180000-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
716 AM EDT Tue Apr 17 2018

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

.TODAY...W winds 10 to 15 kt, increasing to 15 to 20 kt this
afternoon. Gusts up to 30 kt. Seas 8 to 10 ft.
.TONIGHT...W winds 15 to 20 kt, diminishing to 10 to 15 kt after
midnight. Gusts up to 30 kt. Seas 6 to 9 ft.
.WED...W winds 15 to 20 kt with gusts up to 30 kt. Seas 6 to
9 ft.
.WED NIGHT...W winds 15 to 20 kt with gusts up to 30 kt, becoming
SW 5 to 10 kt after midnight. Seas 5 to 8 ft.
.THU...SE winds 10 to 15 kt, becoming SW in the afternoon. Gusts
up to 20 kt. Seas 4 to 7 ft. A chance of rain.
.THU NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas
6 to 9 ft.
.FRI...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to
8 ft.
.FRI NIGHT...NW winds around 10 kt. Seas 3 to 5 ft.
.SAT...NW winds around 10 kt. Seas 2 to 4 ft.
.SAT NIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft.

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.

$$

ANZ256-180000-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
716 AM EDT Tue Apr 17 2018

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

.TODAY...W winds 15 to 20 kt with gusts up to 30 kt. Seas 8 to
11 ft.
.TONIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Seas 6 to
9 ft.
.WED...W winds 15 to 20 kt with gusts up to 30 kt. Seas 6 to
9 ft.
.WED NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt,
becoming S 5 to 10 kt after midnight. Seas 4 to 7 ft.
.THU...SE winds 10 to 15 kt, becoming SW in the afternoon. Gusts
up to 20 kt. Seas 4 to 7 ft. A chance of rain.
.THU NIGHT...W winds 10 to 15 kt with gusts up to 30 kt. Seas
6 to 9 ft.
.FRI...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 5 to
8 ft.
.FRI NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 ft.
.SAT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft.
.SAT NIGHT...NW winds around 10 kt. Seas around 2 ft.

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.

$$

ANZ232-180000-
Nantucket Sound-
716 AM EDT Tue Apr 17 2018

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

.TODAY...W winds 10 to 15 kt, becoming SW 15 to 20 kt this
afternoon. Gusts up to 30 kt. Seas 3 to 5 ft.
.TONIGHT...W winds 15 to 20 kt with gusts up to 30 kt,
diminishing to 10 to 15 kt with gusts up to 20 kt after midnight.
Seas 2 to 4 ft.
.WED...W winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to
5 ft.
.WED NIGHT...W winds 15 to 20 kt with gusts up to 25 kt, becoming
SW 5 to 10 kt after midnight. Seas 2 to 4 ft.
.THU...SE winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas 2 to 3 ft. A chance of rain.
.THU NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft. A chance of rain.
.FRI...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft.
.FRI NIGHT...NW winds 5 to 10 kt with gusts up to 20 kt. Seas
around 2 ft.
.SAT...NW winds 5 to 10 kt. Seas 1 foot or less.
.SAT NIGHT...W winds 5 to 10 kt. Seas 1 foot or less.

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.

$$

ANZ233-180000-
Vineyard Sound-
716 AM EDT Tue Apr 17 2018

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

.TODAY...SW winds 15 to 20 kt. Gusts up to 20 kt, increasing to
30 kt this afternoon. Seas 3 to 5 ft.
.TONIGHT...W winds 15 to 20 kt, diminishing to 10 to 15 kt after
midnight. Gusts up to 25 kt. Seas 2 to 4 ft.
.WED...W winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to
5 ft.
.WED NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt,
diminishing to 5 to 10 kt after midnight. Seas 2 to 4 ft. A
chance of rain.
.THU...SE winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas 2 to 4 ft. A chance of rain.
.THU NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft. A chance of rain.
.FRI...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft.
.FRI NIGHT...NW winds around 10 kt. Seas 2 to 3 ft.
.SAT...NW winds around 10 kt. Seas around 2 ft.
.SAT NIGHT...NW winds 5 to 10 kt. Seas 1 foot or less.

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.

$$

ANZ234-180000-
Buzzards Bay-
716 AM EDT Tue Apr 17 2018

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

.TODAY...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
4 ft.
.TONIGHT...W winds 10 to 15 kt, diminishing to 5 to 10 kt after
midnight. Gusts up to 25 kt. Seas 2 to 4 ft.
.WED...W winds 10 to 15 kt with gusts up to 30 kt. Seas 2 to
4 ft.
.WED NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt,
diminishing to around 5 kt after midnight. Seas 2 to 4 ft. A
chance of rain.
.THU...SE winds 5 to 10 kt, becoming SW in the afternoon. Seas
2 to 3 ft. A chance of rain.
.THU NIGHT...NW winds 5 to 10 kt with gusts up to 20 kt. Seas
2 to 3 ft. A chance of rain.
.FRI...NW winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to
3 ft.
.FRI NIGHT...NW winds 5 to 10 kt. Seas around 2 ft.
.SAT...NW winds 5 to 10 kt. Seas 1 foot or less.
.SAT NIGHT...NW winds 5 to 10 kt. Seas 1 foot or less.

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.

$$

ANZ235-180000-
Rhode Island Sound-
716 AM EDT Tue Apr 17 2018

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

.TODAY...W winds 15 to 20 kt with gusts up to 30 kt. Seas 6 to
9 ft.
.TONIGHT...W winds 15 to 20 kt, diminishing to 10 to 15 kt after
midnight. Gusts up to 30 kt. Seas 5 to 8 ft. Scattered showers.
.WED...W winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to
7 ft.
.WED NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt,
becoming S 5 to 10 kt after midnight. Seas 4 to 6 ft.
.THU...SE winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas 3 to 5 ft. A chance of rain.
.THU NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas
4 to 7 ft. A chance of rain.
.FRI...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
6 ft.
.FRI NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft.
.SAT...NW winds around 10 kt. Seas 2 to 3 ft.
.SAT NIGHT...NW winds 5 to 10 kt. Seas around 2 ft.

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.

$$

ANZ237-180000-
Block Island Sound-
716 AM EDT Tue Apr 17 2018

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

.TODAY...W winds 10 to 15 kt, becoming SW 15 to 20 kt this
afternoon. Gusts up to 30 kt. Seas 5 to 8 ft.
.TONIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to
6 ft. Scattered showers.
.WED...W winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to
6 ft.
.WED NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt,
becoming S around 5 kt after midnight. Seas 3 to 5 ft. A chance
of rain.
.THU...SE winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas 3 to 5 ft. A chance of rain.
.THU NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas
4 to 6 ft. A chance of rain.
.FRI...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft.
.FRI NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft.
.SAT...NW winds around 10 kt. Seas 2 to 3 ft.
.SAT NIGHT...NW winds 5 to 10 kt. Seas around 2 ft.

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.

$$

ANZ230-180000-
Boston Harbor-
716 AM EDT Tue Apr 17 2018

.TODAY...W winds 10 to 15 kt with gusts up to 20 kt. Waves around
2 ft, except 3 to 5 ft at the outer harbor entrance.
.TONIGHT...W winds 5 to 10 kt, increasing to 10 to 15 kt after
midnight. Gusts up to 20 kt. Waves around 2 ft.
.WED...W winds 10 to 15 kt with gusts up to 25 kt. Waves around
2 ft.
.WED NIGHT...W winds 5 to 10 kt with gusts up to 20 kt, becoming
SW after midnight. Waves around 2 ft. A chance of rain.
.THU...SE winds around 5 kt, becoming NE in the afternoon. Waves
1 foot or less. Rain.
.THU NIGHT...NW winds 5 to 10 kt. Waves 1 foot or less. Rain
likely.
.FRI...NW winds 5 to 10 kt. Waves 1 foot or less. A chance of
showers.
.FRI NIGHT...NW winds 5 to 10 kt. Waves 1 foot or less.
.SAT...NW winds 5 to 10 kt. Waves 1 foot or less.
.SAT NIGHT...NW winds around 5 kt. Waves 1 foot or less.

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.

$$

ANZ236-180000-
Narragansett Bay-
716 AM EDT Tue Apr 17 2018

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING...

.TODAY...W winds 10 to 15 kt with gusts up to 25 kt. Waves 3 to
5 ft.
.TONIGHT...W winds 10 to 15 kt, diminishing to 5 to 10 kt after
midnight. Gusts up to 20 kt. Waves 2 to 4 ft. Scattered showers.
.WED...W winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to
4 ft.
.WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming
S around 5 kt after midnight. Waves 2 to 4 ft. A chance of rain.
.THU...SE winds 5 to 10 kt, becoming W in the afternoon. Waves
2 to 4 ft. Rain likely.
.THU NIGHT...NW winds 5 to 10 kt with gusts up to 20 kt. Waves
2 to 4 ft. A chance of rain.
.FRI...NW winds 5 to 10 kt with gusts up to 20 kt. Waves 2 to
3 ft.
.FRI NIGHT...NW winds 5 to 10 kt. Waves around 2 ft.
.SAT...NW winds 5 to 10 kt. Waves 1 foot or less.
.SAT NIGHT...NW winds 5 to 10 kt. Waves 1 foot or less.

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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