Coastal Waters Forecast
Issued by NWS Boston, MA

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FZUS51 KBOX 182316
CWFBOX

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

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

ANZ200-191200-
716 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 this afternoon. 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.

$$

ANZ250-191200-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
716 PM EDT Wed Apr 18 2018

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

.TONIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. Rain after midnight.
.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, 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...W winds 5 to 10 kt. Seas around 2 ft.
.SUN NIGHT...W winds 5 to 10 kt. Seas around 2 ft.
.MON...NE winds 5 to 10 kt. Seas around 2 ft.
.MON NIGHT...S 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.

$$

ANZ251-191200-
Massachusetts Bay and Ipswich Bay-
716 PM EDT Wed Apr 18 2018

.TONIGHT...W winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to
4 ft. Rain after midnight.
.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, diminishing
to 5 to 10 kt in the afternoon. 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.
.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.

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.

$$

ANZ231-191200-
Cape Cod Bay-
716 PM EDT Wed Apr 18 2018

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING...

.TONIGHT...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
after midnight.
.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, diminishing
to 5 to 10 kt in the afternoon. 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.
.MON...NE winds 5 to 10 kt. Seas 1 foot or less.
.MON NIGHT...SE 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.

$$

ANZ254-191200-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
716 PM EDT Wed Apr 18 2018

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

.TONIGHT...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 after midnight.
.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, diminishing
to 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. Seas around 2 ft.
.SUN NIGHT...W winds 5 to 10 kt. Seas around 2 ft.
.MON...N winds 5 to 10 kt. Seas around 2 ft.
.MON NIGHT...SE 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.

$$

ANZ255-191200-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
716 PM EDT Wed Apr 18 2018

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

.TONIGHT...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 after midnight.
.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. Gusts up to 20 kt in the morning.
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.
.MON...NE winds around 10 kt. Seas around 2 ft.
.MON NIGHT...SE 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.

$$

ANZ256-191200-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
716 PM EDT Wed Apr 18 2018

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

.TONIGHT...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 after
midnight.
.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.
.MON...E winds around 10 kt. Seas around 2 ft.
.MON NIGHT...SE 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.

$$

ANZ232-191200-
Nantucket Sound-
716 PM EDT Wed Apr 18 2018

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING...

.TONIGHT...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 after midnight.
.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, becoming W
5 to 10 kt in the afternoon. 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.
.MON...NE winds 5 to 10 kt. Seas 1 foot or less.
.MON NIGHT...SE 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.

$$

ANZ233-191200-
Vineyard Sound-
716 PM EDT Wed Apr 18 2018

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING...

.TONIGHT...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 after midnight.
.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...W winds 10 to 15 kt. Gusts up to 20 kt in the morning.
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.
.MON...NE winds around 10 kt. Seas 1 foot or less.
.MON NIGHT...SE 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.

$$

ANZ234-191200-
Buzzards Bay-
716 PM EDT Wed Apr 18 2018

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING...

.TONIGHT...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
after midnight.
.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. Gusts up to 20 kt in the morning.
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.
.MON...NE winds 5 to 10 kt. Seas 1 foot or less.
.MON NIGHT...SE 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.

$$

ANZ235-191200-
Rhode Island Sound-
716 PM EDT Wed Apr 18 2018

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

.TONIGHT...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 after midnight.
.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...W winds 10 to 15 kt. Gusts up to 20 kt in the morning.
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.
.MON...E winds 5 to 10 kt. Seas 1 foot or less.
.MON NIGHT...SE 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.

$$

ANZ237-191200-
Block Island Sound-
716 PM EDT Wed Apr 18 2018

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

.TONIGHT...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 after midnight.
.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...W winds 10 to 15 kt. Gusts up to 20 kt in the morning.
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.
.MON...E winds 5 to 10 kt. Seas 1 foot or less.
.MON NIGHT...SE 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.

$$

ANZ230-191200-
Boston Harbor-
716 PM EDT Wed Apr 18 2018

.TONIGHT...W winds 5 to 10 kt. Gusts up to 20 kt this evening.
Waves around 2 ft. Rain after midnight.
.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. Gusts up to 20 kt in the morning.
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.
.MON...NE winds around 5 kt. Waves 1 foot or less.
.MON NIGHT...S 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.

$$

ANZ236-191200-
Narragansett Bay-
716 PM EDT Wed Apr 18 2018

.TONIGHT...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
after midnight.
.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. 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...NW winds 5 to 10 kt. Waves 1 foot or less.
.SUN NIGHT...NW winds 5 to 10 kt. Waves 1 foot or less.
.MON...NE winds 5 to 10 kt. Waves 1 foot or less.
.MON NIGHT...SE 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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