Coastal Waters Forecast
Issued by NWS Boston, MA

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000
FZUS51 KBOX 131441
CWFBOX

Coastal Waters Forecast
National Weather Service Boston/Norton MA
941 AM EST Thu Dec 13 2018

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

ANZ200-140315-
941 AM EST Thu Dec 13 2018

.Synopsis for Massachusetts and Rhode Island coastal waters...
High pres will shift E of the waters on Fri. A storm system will
approach the waters from the SW Fri night and Sat, lifting slowly
across the waters Sat night and Sun. High pres builds back towards
the waters from the W on Tue.

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.

$$

ANZ250-140315-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
941 AM EST Thu Dec 13 2018

.THIS AFTERNOON...NE winds around 5 kt, becoming SE. Seas around
3 ft.
.TONIGHT...S winds 5 to 10 kt. Seas around 3 ft.
.FRI...S winds 5 to 10 kt. Seas around 3 ft.
.FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
around 3 ft. A chance of rain after midnight.
.SAT...SW winds 10 to 15 kt, becoming NW in the afternoon. Gusts
up to 20 kt. Seas around 3 ft. A chance of rain in the morning.
.SAT NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas
around 3 ft, building to 5 ft after midnight.
.SUN...E winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to
6 ft.
.SUN NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas
around 7 ft. A chance of rain.
.MON...N winds 15 to 20 kt with gusts up to 25 kt. Seas around
8 ft. A chance of rain in the morning.
.MON NIGHT...NW winds 15 to 20 kt, increasing to 20 to 25 kt
after midnight. Gusts up to 30 kt. Seas 6 to 7 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.

$$

ANZ251-140315-
Massachusetts Bay and Ipswich Bay-
941 AM EST Thu Dec 13 2018

.THIS AFTERNOON...E winds around 5 kt, becoming SE. Seas around
3 ft.
.TONIGHT...S winds around 5 kt. Seas around 2 ft.
.FRI...S winds 5 to 10 kt. Seas around 2 ft.
.FRI NIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt after
midnight. Seas around 2 ft. A chance of rain after midnight.
.SAT...W winds 5 to 10 kt, becoming NW in the afternoon. Seas
around 2 ft in the morning, then 1 foot or less. A chance of rain
in the morning.
.SAT NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas
around 2 ft, building to 4 ft after midnight.
.SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas around
5 ft.
.SUN NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas
around 7 ft. A chance of rain.
.MON...N winds 10 to 15 kt with gusts up to 20 kt. Seas around
7 ft. A chance of rain in the morning.
.MON NIGHT...NW winds 10 to 15 kt, increasing to 15 to 20 kt
after midnight. Gusts up to 25 kt. Seas 6 to 7 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.

$$

ANZ231-140315-
Cape Cod Bay-
941 AM EST Thu Dec 13 2018

.THIS AFTERNOON...E winds around 5 kt. Seas around 2 ft.
.TONIGHT...SE winds 5 to 10 kt. Seas 1 foot or less.
.FRI...S winds 5 to 10 kt. Seas around 2 ft.
.FRI NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. A chance of
rain after midnight.
.SAT...SW winds 5 to 10 kt, becoming N in the afternoon. Seas
around 2 ft. A chance of rain.
.SAT NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas
around 4 ft.
.SUN...E winds 10 to 15 kt with gusts up to 20 kt. Seas around
4 ft. A chance of rain in the afternoon.
.SUN NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas
around 5 ft. A chance of rain.
.MON...N winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to
5 ft. A chance of rain in the morning.
.MON NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas
4 to 5 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.

$$

ANZ254-140315-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
941 AM EST Thu Dec 13 2018

.THIS AFTERNOON...E winds around 5 kt. Seas 3 to 4 ft.
.TONIGHT...SE winds 5 to 10 kt. Seas around 3 ft.
.FRI...SE winds 5 to 10 kt. Seas around 3 ft.
.FRI NIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt after
midnight. Seas 3 to 4 ft. A chance of rain after midnight.
.SAT...SW winds 5 to 10 kt, becoming NW in the afternoon. Seas
around 3 ft. A chance of rain.
.SAT NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas
around 4 ft, building to 6 ft after midnight.
.SUN...E winds 15 to 20 kt with gusts up to 25 kt. Seas 7 to
8 ft. A chance of rain in the afternoon.
.SUN NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas
around 8 ft. A chance of rain.
.MON...N winds 15 to 20 kt with gusts up to 25 kt. Seas 7 to
8 ft. A chance of rain in the morning.
.MON NIGHT...NW winds 15 to 20 kt, increasing to 20 to 25 kt
after midnight. Gusts up to 30 kt. Seas around 7 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.

$$

ANZ255-140315-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
941 AM EST Thu Dec 13 2018

.THIS AFTERNOON...E winds 5 to 10 kt. Seas around 3 ft.
.TONIGHT...E winds 10 to 15 kt, becoming SE 5 to 10 kt after
midnight. Seas around 3 ft.
.FRI...SE winds 5 to 10 kt. Seas around 4 ft.
.FRI NIGHT...S winds 5 to 10 kt. Seas 3 to 4 ft. A chance of rain
after midnight.
.SAT...SW winds 5 to 10 kt, becoming NE with gusts up to 20 kt in
the afternoon. Seas 3 to 4 ft. A chance of rain.
.SAT NIGHT...NE winds 15 to 20 kt with gusts up to 30 kt. Seas
around 5 ft, building to 7 ft after midnight.
.SUN...E winds 15 to 20 kt with gusts up to 30 kt. Seas around
8 ft. A chance of rain.
.SUN NIGHT...NE winds 15 to 20 kt with gusts up to 30 kt. Seas
8 to 9 ft. A chance of rain.
.MON...N winds 15 to 20 kt with gusts up to 25 kt. Seas 6 to
7 ft. A chance of rain in the morning.
.MON NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt. Seas
6 to 7 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.

$$

ANZ256-140315-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
941 AM EST Thu Dec 13 2018

.THIS AFTERNOON...E winds around 10 kt. Seas around 3 ft. A
slight chance of light rain.
.TONIGHT...E winds 10 to 15 kt. Gusts up to 20 kt in the evening.
Seas around 4 ft.
.FRI...SE winds 5 to 10 kt. Seas around 4 ft.
.FRI NIGHT...SW winds 5 to 10 kt. Seas 3 to 4 ft. A chance of
rain.
.SAT...S winds 5 to 10 kt, becoming NE 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas 3 to 4 ft. A chance of rain.
.SAT NIGHT...NE winds 15 to 20 kt with gusts up to 30 kt. Seas
around 5 ft, building to 7 ft after midnight.
.SUN...NE winds 15 to 20 kt, becoming E 20 to 25 kt in the
afternoon. Gusts up to 30 kt. Seas 8 to 9 ft. A chance of rain.
.SUN NIGHT...NE winds 20 to 25 kt, diminishing to 15 to 20 kt
after midnight. Gusts up to 30 kt. Seas 8 to 9 ft. A chance of
rain.
.MON...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to
6 ft. A chance of rain in the morning.
.MON NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt. Seas
6 to 7 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.

$$

ANZ232-140315-
Nantucket Sound-
941 AM EST Thu Dec 13 2018

.THIS AFTERNOON...E winds 5 to 10 kt. Seas around 2 ft early,
then 1 foot or less.
.TONIGHT...SE winds 5 to 10 kt. Seas 1 foot or less, then around
2 ft after midnight.
.FRI...SE winds 5 to 10 kt. Seas around 2 ft.
.FRI NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. A chance of
rain after midnight.
.SAT...SW winds 5 to 10 kt, becoming N in the afternoon. Seas
around 2 ft. A chance of rain.
.SAT NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas
around 4 ft.
.SUN...E winds 15 to 20 kt with gusts up to 25 kt. Seas around
5 ft. A chance of rain in the afternoon.
.SUN NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas
around 5 ft. A chance of rain.
.MON...N winds 15 to 20 kt, becoming NW 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas around 4 ft. A chance of rain
in the morning.
.MON NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas
4 to 5 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.

$$

ANZ233-140315-
Vineyard Sound-
941 AM EST Thu Dec 13 2018

.THIS AFTERNOON...E winds 5 to 10 kt. Seas 1 foot or less.
.TONIGHT...SE winds 5 to 10 kt. Seas 1 foot or less.
.FRI...SE winds 5 to 10 kt. Seas around 2 ft.
.FRI NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. A chance of
rain after midnight.
.SAT...SW winds 5 to 10 kt, becoming NE in the afternoon. Seas
2 to 3 ft. A chance of rain.
.SAT NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas
around 4 ft.
.SUN...NE winds 15 to 20 kt with gusts up to 25 kt. Seas around
5 ft. A chance of rain in the afternoon.
.SUN NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas
around 5 ft. A chance of rain.
.MON...NW winds 10 to 15 kt with gusts up to 25 kt. Seas around
4 ft. A chance of rain in the morning.
.MON NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas
around 4 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.

$$

ANZ234-140315-
Buzzards Bay-
941 AM EST Thu Dec 13 2018

.THIS AFTERNOON...E winds 5 to 10 kt. Seas 1 foot or less.
.TONIGHT...SE winds 5 to 10 kt. Seas 1 foot or less.
.FRI...SE winds 5 to 10 kt. Seas around 2 ft.
.FRI NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. A chance of
rain after midnight.
.SAT...SW winds around 5 kt, becoming N in the afternoon. Seas
around 2 ft. A chance of rain.
.SAT NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas
around 4 ft.
.SUN...NE winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas around 4 ft. A chance of rain
in the afternoon.
.SUN NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas
around 4 ft. A chance of rain.
.MON...NW winds 10 to 15 kt with gusts up to 20 kt. Seas around
3 ft. A chance of rain in the morning.
.MON NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 4 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.

$$

ANZ235-140315-
Rhode Island Sound-
941 AM EST Thu Dec 13 2018

.THIS AFTERNOON...E winds 5 to 10 kt. Seas around 2 ft.
.TONIGHT...SE winds 5 to 10 kt. Seas around 3 ft.
.FRI...SE winds 5 to 10 kt. Seas 3 to 4 ft.
.FRI NIGHT...SW winds 5 to 10 kt. Seas around 3 ft. A chance of
rain.
.SAT...SW winds 5 to 10 kt, becoming NE in the afternoon. Seas
around 3 ft. A chance of rain.
.SAT NIGHT...NE winds 10 to 15 kt, increasing to 15 to 20 kt
after midnight. Gusts up to 30 kt. Seas around 4 ft, building to
6 ft after midnight.
.SUN...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 6 to
7 ft. A chance of rain.
.SUN NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas
around 7 ft. A chance of rain.
.MON...N winds 15 to 20 kt, becoming NW 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 4 to 5 ft. A chance of rain in
the morning.
.MON NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas
4 to 5 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.

$$

ANZ237-140315-
Block Island Sound-
941 AM EST Thu Dec 13 2018

.THIS AFTERNOON...E winds around 10 kt. Seas 2 to 3 ft. A slight
chance of light rain.
.TONIGHT...E winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas around 3 ft.
.FRI...SE winds 5 to 10 kt. Seas 3 to 4 ft.
.FRI NIGHT...SW winds 5 to 10 kt. Seas around 3 ft. A chance of
rain.
.SAT...SW winds around 5 kt, becoming NE in the afternoon. Seas
around 3 ft. A chance of rain.
.SAT NIGHT...NE winds 10 to 15 kt, increasing to 15 to 20 kt
after midnight. Gusts up to 30 kt. Seas around 4 ft, building to
6 ft after midnight.
.SUN...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 6 to
7 ft. A chance of rain.
.SUN NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas
6 to 7 ft. A chance of rain.
.MON...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
5 ft. A chance of rain in the morning.
.MON NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas
4 to 5 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.

$$

ANZ230-140315-
Boston Harbor-
941 AM EST Thu Dec 13 2018

.THIS AFTERNOON...NE winds around 5 kt, becoming SE. Waves 1 foot
or less.
.TONIGHT...S winds around 5 kt. Waves 1 foot or less.
.FRI...S winds 5 to 10 kt. Waves 1 foot or less.
.FRI NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less. A chance
of rain after midnight.
.SAT...W winds 5 to 10 kt, becoming NW in the afternoon. Waves
1 foot or less. A chance of rain in the morning.
.SAT NIGHT...NE winds 5 to 10 kt with gusts up to 20 kt. Waves
2 to 3 ft.
.SUN...NE winds around 10 kt. Waves around 4 ft. A chance of rain
in the afternoon.
.SUN NIGHT...NE winds around 10 kt. Waves around 5 ft. A chance
of rain.
.MON...N winds 5 to 10 kt. Waves around 2 ft, except up to 6 ft
at the outer harbor entrance.
.MON NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Waves
around 2 ft, except 5 to 6 ft at the outer harbor entrance.

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.

$$

ANZ236-140315-
Narragansett Bay-
941 AM EST Thu Dec 13 2018

.THIS AFTERNOON...E winds 5 to 10 kt. Waves 1 foot or less.
.TONIGHT...E winds 5 to 10 kt. Waves around 2 ft.
.FRI...SE winds 5 to 10 kt. Waves 2 to 3 ft.
.FRI NIGHT...SW winds around 5 kt. Waves around 3 ft. A chance of
rain.
.SAT...SW winds around 5 kt, becoming N in the afternoon. Waves
around 2 ft. A chance of rain.
.SAT NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Waves
around 3 ft.
.SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Waves around
3 ft, except 5 to 6 ft at the bay entrance. A chance of rain in
the afternoon.
.SUN NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Waves
around 3 ft, except up to 6 ft at the bay entrance. A chance of
rain.
.MON...NW winds 10 to 15 kt with gusts up to 20 kt. Waves around
3 ft. A chance of rain in the morning.
.MON NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Waves
around 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.

$$

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