Coastal Waters Forecast
Issued by NWS Boston, MA

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000
FZUS51 KBOX 190215
CWFBOX

Coastal Waters Forecast
National Weather Service Boston/Norton MA
1015 PM EDT Wed Apr 18 2018

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

ANZ200-191515-
1015 PM EDT Wed Apr 18 2018

.Synopsis for Massachusetts and Rhode Island coastal waters...
Low pres moving NE over the Canadian maritimes will wrap stiff
westerly winds across the waters tonight. Low pres approaching
from the SW tonight will lift over the waters Thu. The low will
head toward Nova Scotia Thu night then across New Foundland on
Fri. High pres will build dry weather over the waters this
weekend.

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.

$$

ANZ250-191515-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
1015 PM EDT Wed Apr 18 2018

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT THURSDAY...

.REST OF TONIGHT...W winds 15 to 20 kt with gusts up to 25 kt.
Seas 4 to 6 ft.
.WED...W winds 15 to 20 kt, diminishing to 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. Seas
3 to 5 ft. Rain.
.THU...W winds 5 to 10 kt, becoming NE 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas 2 to 4 ft. Rain. Vsby 1 to 3 NM.
.THU NIGHT...NW winds 10 to 15 kt, increasing to 15 to 20 kt
after midnight. Gusts up to 25 kt. Seas 3 to 5 ft. Rain likely.
.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. A chance of
showers.
.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. Seas 2 to
4 ft.
.SAT NIGHT...NW winds 5 to 10 kt. Seas around 2 ft.
.SUN...W winds 5 to 10 kt. Seas around 2 ft.
.SUN NIGHT...W 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.

$$

ANZ251-191515-
Massachusetts Bay and Ipswich Bay-
1015 PM EDT Wed Apr 18 2018

.REST OF TONIGHT...W winds 15 to 20 kt with gusts up to 25 kt.
Seas 3 to 5 ft.
.WED...W winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 3 to 5 ft.
.WED NIGHT...W winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to
4 ft. Rain.
.THU...N winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. Seas 2 to 3 ft. Rain.
.THU NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas
2 to 3 ft. Rain likely.
.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 20 kt. Seas
around 2 ft.
.SAT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 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...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.

$$

ANZ231-191515-
Cape Cod Bay-
1015 PM EDT Wed Apr 18 2018

.REST OF TONIGHT...W winds 10 to 15 kt with gusts up to 25 kt.
Seas 2 to 4 ft.
.WED...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
4 ft.
.WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas around 2 ft. Rain.
.THU...E winds 5 to 10 kt, becoming NE 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas 2 to 3 ft. Rain. Vsby 1 to 3 NM.
.THU NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas
2 to 3 ft. Rain likely.
.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 20 kt. Seas
around 2 ft.
.SAT...NW winds 10 to 15 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...N winds 5 to 10 kt. Seas 1 foot or less.
.SUN 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.

$$

ANZ254-191515-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
1015 PM EDT Wed Apr 18 2018

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT THURSDAY...

.REST OF TONIGHT...W winds 15 to 20 kt with gusts up to 30 kt.
Seas 4 to 7 ft.
.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 30 kt,
diminishing to 10 to 15 kt with gusts up to 20 kt after midnight.
Seas 3 to 5 ft. A chance of rain.
.THU...SE winds 10 to 15 kt, becoming NE in the afternoon. Gusts
up to 20 kt. Seas 2 to 4 ft. Rain.
.THU NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas
4 to 6 ft. A chance of rain.
.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 5 to 10 kt, increasing to 10 to 15 kt after
midnight. Gusts up to 20 kt. Seas 2 to 4 ft.
.SAT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft.
.SAT NIGHT...W winds 5 to 10 kt. Seas around 2 ft.
.SUN...NW winds 5 to 10 kt. Seas around 2 ft.
.SUN NIGHT...W 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.

$$

ANZ255-191515-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
1015 PM EDT Wed Apr 18 2018

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT THURSDAY...

.REST OF TONIGHT...W winds 20 to 25 kt with gusts up to 35 kt.
Seas 5 to 8 ft.
.WED...W winds 20 to 25 kt with gusts up to 35 kt. Seas 5 to
8 ft.
.WED NIGHT...SW 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 4 to 7 ft. A chance of rain.
.THU...E winds 10 to 15 kt, becoming NE in the afternoon. Gusts
up to 20 kt. Seas 3 to 5 ft. Rain. Vsby 1 to 3 NM.
.THU NIGHT...NW winds 10 to 15 kt, increasing to 15 to 20 kt
after midnight. Gusts up to 25 kt. Seas 5 to 8 ft. A chance of
rain.
.FRI...NW winds 15 to 20 kt, becoming W 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 4 to 7 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
4 ft.
.SAT NIGHT...NW winds 10 to 15 kt. Seas 2 to 3 ft.
.SUN...W winds 5 to 10 kt. Seas around 2 ft.
.SUN NIGHT...W 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.

$$

ANZ256-191515-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
1015 PM EDT Wed Apr 18 2018

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT THURSDAY...

.REST OF TONIGHT...W winds 20 to 25 kt with gusts up to 30 kt.
Seas 5 to 8 ft.
.WED...W winds 15 to 20 kt, increasing to 20 to 25 kt in the
afternoon. Gusts up to 30 kt. Seas 5 to 8 ft.
.WED NIGHT...SW winds 10 to 15 kt. Gusts up to 30 kt, decreasing
to 20 kt after midnight. Seas 4 to 7 ft. A chance of rain.
.THU...E winds 15 to 20 kt, becoming N 10 to 15 kt in the
afternoon. Seas 4 to 6 ft. A chance of rain. Vsby 1 to 3 NM.
.THU NIGHT...NW winds 10 to 15 kt, increasing to 15 to 20 kt
after midnight. Gusts up to 25 kt. Seas 5 to 8 ft. A chance of
rain.
.FRI...W winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to
7 ft.
.FRI NIGHT...NW winds around 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
3 ft.
.SAT NIGHT...NW winds 10 to 15 kt. Seas around 2 ft.
.SUN...W winds 10 to 15 kt. Seas around 2 ft.
.SUN NIGHT...NW winds 10 to 15 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.

$$

ANZ232-191515-
Nantucket Sound-
1015 PM EDT Wed Apr 18 2018

.REST OF TONIGHT...W winds 15 to 20 kt with gusts up to 30 kt.
Seas 2 to 4 ft.
.WED...W winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to
4 ft.
.WED NIGHT...SW 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. A chance of rain.
.THU...NE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 2 to 3 ft. Rain.
.THU NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas
2 to 4 ft. A chance of rain.
.FRI...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
4 ft.
.FRI NIGHT...NW winds 5 to 10 kt, increasing to 10 to 15 kt after
midnight. Gusts up to 20 kt. Seas 2 to 3 ft.
.SAT...NW winds 10 to 15 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...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.

$$

ANZ233-191515-
Vineyard Sound-
1015 PM EDT Wed Apr 18 2018

.REST OF TONIGHT...W winds 20 to 25 kt with gusts up to 30 kt.
Seas 3 to 5 ft.
.WED...W winds 20 to 25 kt, diminishing to 15 to 20 kt in the
afternoon. Gusts up to 30 kt. Seas 3 to 5 ft.
.WED NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt,
diminishing to 5 to 10 kt after midnight. Seas 2 to 4 ft. Rain
likely.
.THU...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Rain.
.THU NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas
2 to 4 ft. A chance of rain.
.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 20 kt. Seas
2 to 3 ft.
.SAT...NW winds 10 to 15 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...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.

$$

ANZ234-191515-
Buzzards Bay-
1015 PM EDT Wed Apr 18 2018

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

$$

ANZ235-191515-
Rhode Island Sound-
1015 PM EDT Wed Apr 18 2018

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT THURSDAY...

.REST OF TONIGHT...W winds 20 to 25 kt with gusts up to 30 kt.
Seas 4 to 6 ft.
.WED...W winds 20 to 25 kt, diminishing to 15 to 20 kt in the
afternoon. Gusts up to 30 kt. Seas 4 to 6 ft.
.WED NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt,
diminishing to 5 to 10 kt after midnight. Seas 3 to 5 ft. Rain
likely.
.THU...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Rain.
.THU NIGHT...NW winds 10 to 15 kt, increasing to 15 to 20 kt
after midnight. Gusts up to 25 kt. Seas 4 to 6 ft. A chance of
rain.
.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 20 kt. Seas
2 to 3 ft.
.SAT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft.
.SAT NIGHT...NW winds 10 to 15 kt. Seas around 2 ft.
.SUN...W winds 5 to 10 kt. Seas around 2 ft.
.SUN 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.

$$

ANZ237-191515-
Block Island Sound-
1015 PM EDT Wed Apr 18 2018

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT THURSDAY...

.REST OF TONIGHT...W winds 15 to 20 kt with gusts up to 30 kt.
Seas 3 to 5 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. Rain
likely.
.THU...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Rain likely. Vsby 1 to 3 NM.
.THU NIGHT...NW winds 10 to 15 kt, increasing to 15 to 20 kt
after midnight. Gusts up to 25 kt. Seas 3 to 5 ft. A chance of
rain.
.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 3 ft.
.SAT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft.
.SAT NIGHT...NW winds around 10 kt. Seas around 2 ft.
.SUN...W winds 5 to 10 kt. Seas around 2 ft.
.SUN 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.

$$

ANZ230-191515-
Boston Harbor-
1015 PM EDT Wed Apr 18 2018

.REST OF TONIGHT...W winds 15 to 20 kt with gusts up to 25 kt.
Waves 2 to 3 ft.
.WED...W winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Waves 2 to 3 ft.
.WED NIGHT...W winds 5 to 10 kt. Gusts up to 20 kt in the
evening. Waves around 2 ft. Rain.
.THU...N winds 5 to 10 kt. Waves 1 foot or less. Rain.
.THU NIGHT...NW winds 5 to 10 kt, increasing to 10 to 15 kt after
midnight. Gusts up to 25 kt. Waves around 2 ft. Rain likely.
.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 20 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 around 5 kt. Waves 1 foot or less.
.SUN 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.

$$

ANZ236-191515-
Narragansett Bay-
1015 PM EDT Wed Apr 18 2018

.REST OF TONIGHT...W winds 10 to 15 kt with gusts up to 25 kt.
Waves 2 to 4 ft.
.WED...W winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to
3 ft.
.WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Waves 2 to 4 ft. Rain.
.THU...NE winds 5 to 10 kt. Waves 2 to 3 ft. Rain.
.THU NIGHT...NW winds 5 to 10 kt, increasing to 10 to 15 kt after
midnight. Gusts up to 25 kt. Waves 2 to 3 ft. A chance of rain.
.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 20 kt. Waves
around 2 ft.
.SAT...NW winds 5 to 10 kt with gusts up to 20 kt. Waves around
2 ft.
.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 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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