Coastal Waters Forecast
Issued by NWS Boston, MA

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FZUS51 KBOX 210755
CWFBOX

Coastal Waters Forecast
National Weather Service Boston/Norton MA
355 AM EDT Tue May 21 2019

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

ANZ200-212015-
355 AM EDT Tue May 21 2019

.Synopsis for Massachusetts and Rhode Island coastal waters...
Low pres will intensify over the Maritimes today, resulting in a
period of strong NW wind gusts over eastern MA nearshore waters.
High pres then builds in from the W tonight, moving over the
waters Wed into Wed night. The high moves offshore Thu, then low
pres will move SE into the Gulf of Maine late Thu night into Fri.
High pres returns Sat.

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.

$$

ANZ250-212015-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
355 AM EDT Tue May 21 2019

...SMALL CRAFT ADVISORY IN EFFECT FROM 2 PM EDT THIS AFTERNOON
THROUGH WEDNESDAY MORNING...

.TODAY...W winds 15 to 20 kt with gusts up to 25 kt. Seas around
4 ft.
.TONIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas
around 6 ft.
.WED...N winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 5 to 6 ft.
.WED NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas
around 2 ft.
.THU...SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas around 2 ft, building to 4 ft in
the afternoon.
.THU NIGHT...S winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Gusts up to 25 kt. Seas around 4 ft. A chance of
showers in the evening. Showers likely after midnight.
.FRI...W winds 10 to 15 kt, becoming N in the afternoon. Gusts up
to 25 kt. Seas around 4 ft. A chance of showers in the morning.
.FRI NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt,
becoming E 5 to 10 kt after midnight. Seas around 5 ft.
.SAT...E winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas 4 to 5 ft. A chance of showers in
the afternoon.
.SAT NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas
4 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.

$$

ANZ251-212015-
Massachusetts Bay and Ipswich Bay-
355 AM EDT Tue May 21 2019

...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT THIS MORNING
THROUGH WEDNESDAY MORNING...

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

$$

ANZ231-212015-
Cape Cod Bay-
355 AM EDT Tue May 21 2019

...SMALL CRAFT ADVISORY IN EFFECT FROM NOON EDT TODAY THROUGH
WEDNESDAY MORNING...

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

$$

ANZ254-212015-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
355 AM EDT Tue May 21 2019

...SMALL CRAFT ADVISORY IN EFFECT FROM 2 PM EDT THIS AFTERNOON
THROUGH WEDNESDAY AFTERNOON...

.TODAY...W winds 10 to 15 kt with gusts up to 20 kt. Seas around
4 ft.
.TONIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas
around 6 ft.
.WED...N winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Gusts up to 30 kt. Seas 6 to 7 ft.
.WED NIGHT...N winds around 5 kt, becoming SW after midnight.
Seas around 3 ft.
.THU...SW 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.
.THU NIGHT...S winds 10 to 15 kt with gusts up to 25 kt. Seas
4 to 5 ft. A chance of showers in the evening. Showers likely
after midnight with vsby 1 to 3 NM.
.FRI...W winds 10 to 15 kt, becoming N in the afternoon. Gusts up
to 25 kt. Seas around 5 ft. A chance of showers.
.FRI NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas
around 6 ft.
.SAT...E winds 5 to 10 kt, becoming SE with gusts up to 20 kt in
the afternoon. Seas around 5 ft. A chance of showers in the
afternoon.
.SAT NIGHT...S winds 10 to 15 kt with gusts up to 25 kt. Seas
4 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.

$$

ANZ255-212015-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
355 AM EDT Tue May 21 2019

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

.TODAY...W winds 15 to 20 kt. Seas around 5 ft.
.TONIGHT...NW winds 15 to 20 kt, diminishing to 10 to 15 kt after
midnight. Gusts up to 25 kt. Seas around 4 ft.
.WED...N winds 10 to 15 kt with gusts up to 25 kt. Seas around
4 ft.
.WED NIGHT...SW winds around 5 kt. Seas 2 to 3 ft.
.THU...SW 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.
.THU NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas
4 to 5 ft. A chance of showers in the evening. Showers likely
after midnight with vsby 1 to 3 NM.
.FRI...W winds 10 to 15 kt, becoming N in the afternoon. Gusts up
to 25 kt. Seas 5 to 6 ft. A chance of showers in the morning.
.FRI NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas
around 5 ft.
.SAT...E winds around 10 kt, becoming SE in the afternoon. Seas
4 to 5 ft.
.SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas
around 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.

$$

ANZ256-212015-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
355 AM EDT Tue May 21 2019

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

.TODAY...W winds 10 to 15 kt, increasing to 15 to 20 kt this
afternoon. Seas around 5 ft.
.TONIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas
around 4 ft.
.WED...N winds 10 to 15 kt with gusts up to 25 kt, becoming SW
5 to 10 kt in the afternoon. Seas around 4 ft, subsiding to 2 ft
in the afternoon.
.WED NIGHT...S winds 5 to 10 kt. Seas around 2 ft.
.THU...S winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas around 2 ft, building to 4 ft in the afternoon.
.THU NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas
4 to 5 ft. A chance of showers in the evening. Showers likely
after midnight with vsby 1 to 3 NM.
.FRI...W winds 10 to 15 kt, becoming N in the afternoon. Gusts up
to 25 kt. Seas 4 to 5 ft. A chance of showers in the morning.
.FRI NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas
4 to 5 ft.
.SAT...E winds around 10 kt, becoming SE with gusts up to 20 kt
in the afternoon. Seas around 4 ft.
.SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
around 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.

$$

ANZ232-212015-
Nantucket Sound-
355 AM EDT Tue May 21 2019

.TODAY...W winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft.
.TONIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas
around 3 ft.
.WED...N winds 10 to 15 kt with gusts up to 25 kt. Seas around
3 ft.
.WED NIGHT...S winds around 5 kt. Seas 1 foot or less.
.THU...SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas 1 foot or less, then around 3 ft
in the afternoon.
.THU NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas
around 3 ft. A chance of showers in the evening. Showers likely
after midnight with vsby 1 to 3 NM.
.FRI...W winds 10 to 15 kt, becoming N in the afternoon. Gusts up
to 25 kt. Seas around 3 ft. A chance of showers.
.FRI NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas
around 3 ft.
.SAT...E winds 5 to 10 kt, becoming SE in the afternoon. Seas
2 to 3 ft. A chance of showers in the afternoon.
.SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 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.

$$

ANZ233-212015-
Vineyard Sound-
355 AM EDT Tue May 21 2019

.TODAY...W winds 10 to 15 kt with gusts up to 20 kt. Seas around
3 ft.
.TONIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
3 ft.
.WED...N winds 10 to 15 kt with gusts up to 25 kt, becoming NE
5 to 10 kt in the afternoon. Seas around 2 ft in the morning,
then 1 foot or less.
.WED NIGHT...S winds around 5 kt. Seas 1 foot or less.
.THU...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Seas 1 foot or less, then around
3 ft in the afternoon.
.THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. A chance of showers in the evening. Showers likely
after midnight.
.FRI...W winds 10 to 15 kt, becoming N in the afternoon. Gusts up
to 20 kt. Seas 2 to 3 ft. A chance of showers in the morning.
.FRI NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas around 2 ft.
.SAT...E winds 5 to 10 kt, becoming S in the afternoon. Seas
1 foot or less. A chance of showers in the afternoon.
.SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
1 foot or less, then around 2 ft after midnight. 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.

$$

ANZ234-212015-
Buzzards Bay-
355 AM EDT Tue May 21 2019

...SMALL CRAFT ADVISORY IN EFFECT FROM NOON EDT TODAY THROUGH
THIS EVENING...

.TODAY...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
3 ft.
.TONIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
3 ft.
.WED...N winds 10 to 15 kt with gusts up to 25 kt, becoming NE
5 to 10 kt in the afternoon. Seas around 2 ft in the morning,
then 1 foot or less.
.WED NIGHT...S winds around 5 kt. Seas 1 foot or less.
.THU...SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas 1 foot or less, then around 2 ft
in the afternoon.
.THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. A chance of showers in the evening. Showers likely
after midnight.
.FRI...W winds 10 to 15 kt, becoming N in the afternoon. Gusts up
to 20 kt. Seas around 2 ft. A chance of showers in the morning.
.FRI NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas around 2 ft.
.SAT...E winds 5 to 10 kt, becoming S in the afternoon. Seas
1 foot or less. A chance of showers in the afternoon.
.SAT NIGHT...SW winds around 10 kt with gusts up to 20 kt. Seas
1 foot or less, then around 2 ft after midnight. 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.

$$

ANZ235-212015-
Rhode Island Sound-
355 AM EDT Tue May 21 2019

.TODAY...W winds 10 to 15 kt, increasing to 15 to 20 kt this
afternoon. Seas around 4 ft.
.TONIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to
4 ft.
.WED...N winds 10 to 15 kt with gusts up to 25 kt, becoming S
5 to 10 kt in the afternoon. Seas 2 to 3 ft.
.WED NIGHT...S winds 5 to 10 kt. Seas around 2 ft in the evening,
then 1 foot or less.
.THU...S winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 2 to 3 ft.
.THU NIGHT...S winds 15 to 20 kt, becoming SW 10 to 15 kt after
midnight. Gusts up to 25 kt. Seas 3 to 4 ft. A chance of showers
in the evening. Showers likely after midnight.
.FRI...NW winds 10 to 15 kt, becoming N in the afternoon. Gusts
up to 20 kt. Seas 3 to 4 ft. A chance of showers in the morning.
.FRI NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft.
.SAT...E winds 5 to 10 kt, becoming S in the afternoon. Seas
around 2 ft. A chance of showers in the afternoon.
.SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 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.

$$

ANZ237-212015-
Block Island Sound-
355 AM EDT Tue May 21 2019

.TODAY...W winds 10 to 15 kt with gusts up to 20 kt. Seas around
4 ft.
.TONIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas
around 3 ft.
.WED...NW winds 10 to 15 kt with gusts up to 20 kt, becoming SW
5 to 10 kt in the afternoon. Seas 2 to 3 ft.
.WED NIGHT...S winds 5 to 10 kt. Seas around 2 ft.
.THU...S winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 2 to 3 ft.
.THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
around 3 ft. A chance of showers in the evening. Showers likely
after midnight.
.FRI...NW winds 10 to 15 kt, becoming N in the afternoon. Gusts
up to 20 kt. Seas around 3 ft. A chance of showers in the
morning.
.FRI NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft.
.SAT...E winds 5 to 10 kt, becoming S with gusts up to 20 kt in
the afternoon. Seas around 2 ft. A chance of showers in the
afternoon.
.SAT NIGHT...SW winds around 10 kt with gusts up to 20 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.

$$

ANZ230-212015-
Boston Harbor-
355 AM EDT Tue May 21 2019

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

.TODAY...W winds 15 to 20 kt with gusts up to 30 kt. Waves around
2 ft.
.TONIGHT...NW winds 15 to 20 kt, diminishing to 10 to 15 kt after
midnight. Gusts up to 30 kt. Waves around 2 ft.
.WED...N winds 10 to 15 kt with gusts up to 25 kt, becoming NE
5 to 10 kt in the afternoon. Waves around 2 ft.
.WED NIGHT...SE winds around 5 kt, becoming SW after midnight.
Waves 1 foot or less.
.THU...S winds 5 to 10 kt. Waves 1 foot or less, then around 2 ft
in the afternoon.
.THU NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less. A chance
of showers in the evening. Showers likely after midnight.
.FRI...NW winds 5 to 10 kt, becoming N in the afternoon. Waves
1 foot or less. A chance of showers.
.FRI NIGHT...NE winds 5 to 10 kt. Waves 1 foot or less.
.SAT...SE winds 5 to 10 kt. Waves 1 foot or less. A chance of
showers in the afternoon.
.SAT NIGHT...SW winds around 10 kt. Waves 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.

$$

ANZ236-212015-
Narragansett Bay-
355 AM EDT Tue May 21 2019

...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT THIS MORNING
THROUGH THIS EVENING...

.TODAY...NW winds 10 to 15 kt. Gusts up to 30 kt. Waves around
3 ft.
.TONIGHT...NW winds 10 to 15 kt. Gusts up to 30 kt. Waves 2 to
3 ft.
.WED...N winds 10 to 15 kt, becoming NW 5 to 10 kt in the
afternoon. Gusts up to 20 kt. Waves around 2 ft in the morning,
then 1 foot or less.
.WED NIGHT...S winds 5 to 10 kt. Waves 1 foot or less.
.THU...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Waves 1 foot or less, then around
2 ft in the afternoon.
.THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Waves
around 3 ft. A chance of showers in the evening. Showers likely
after midnight.
.FRI...NW winds 5 to 10 kt, becoming N 10 to 15 kt with gusts up
to 20 kt in the afternoon. Waves around 2 ft. A chance of showers
in the morning.
.FRI NIGHT...NE winds 5 to 10 kt. Gusts up to 20 kt in the
evening. Waves around 2 ft.
.SAT...E winds 5 to 10 kt, becoming S in the afternoon. Waves
1 foot or less. A chance of showers in the afternoon.
.SAT NIGHT...SW winds around 10 kt. Waves 1 foot or less, then
around 2 ft after midnight. 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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