Coastal Waters Forecast
Issued by NWS Boston, MA

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000
FZUS51 KBOX 171816
CWFBOX

Coastal Waters Forecast
National Weather Service Boston/Norton MA
116 PM EST Thu Jan 17 2019

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

ANZ200-180700-
116 PM EST Thu Jan 17 2019

.Synopsis for Massachusetts and Rhode Island coastal waters...
High pres builds across the waters today, then shifts E tonight.  A
wave of low pres lifts NE over southern New England on Fri  bringing
snow changing to rain, then is followed by dry high pres  Fri night
and Sat. A more potent low pres area will impact the  waters Sat
night and Sun, with the center of circulation passing  along the
south coast and Cape Canal vicinity. In the wake of the  departing
storm, arctic air spreads across the waters Sun night,  Mon and Mon
night on gusty NW gales with freezing spray likely.

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.

$$

ANZ250-180700-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
116 PM EST Thu Jan 17 2019

.THIS AFTERNOON...NW winds 5 to 10 kt. Seas 2 to 3 ft.
.TONIGHT...S winds around 5 kt, increasing to 5 to 10 kt after
midnight. Seas around 2 ft. Snow likely.
.FRI...S winds 10 to 15 kt, diminishing to 5 to 10 kt in the
afternoon. Seas 2 to 3 ft. Snow with a chance of rain. Vsby 1 to
3 NM.
.FRI NIGHT...W winds 10 to 15 kt, becoming NW 15 to 20 kt after
midnight. Gusts up to 25 kt. Seas 2 to 4 ft.
.SAT...N winds 10 to 15 kt. Gusts up to 20 kt in the morning.
Seas 3 to 5 ft.
.SAT NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt,
becoming E 20 to 25 kt with gusts up to 35 kt after midnight.
Seas 5 to 8 ft. Snow. Vsby 1 NM or less.
.SUN...E winds 20 to 25 kt with gusts up to 45 kt. Seas 8 to
11 ft. Rain. Vsby 1 NM or less.
.SUN NIGHT...N winds 25 to 30 kt with gusts up to 40 kt. Seas
7 to 10 ft. Light freezing spray likely. A chance of snow. Vsby
1 NM or less.
.MON...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 7 to
10 ft. Freezing spray likely. A chance of snow showers.
.MON NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt. Seas
6 to 9 ft. Freezing spray likely.

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.

$$

ANZ251-180700-
Massachusetts Bay and Ipswich Bay-
116 PM EST Thu Jan 17 2019

.THIS AFTERNOON...NW winds 5 to 10 kt. Seas around 2 ft.
.TONIGHT...S winds around 5 kt, increasing to 5 to 10 kt after
midnight. Seas 1 foot or less. Snow likely.
.FRI...S winds 5 to 10 kt. Seas around 2 ft. Snow likely. Vsby
1 to 3 NM.
.FRI NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas
2 to 3 ft.
.SAT...N winds 10 to 15 kt with gusts up to 20 kt, diminishing to
5 to 10 kt in the afternoon. Seas 2 to 3 ft.
.SAT NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt,
becoming E 15 to 20 kt with gusts up to 30 kt after midnight.
Seas 4 to 6 ft. Snow. Vsby 1 NM or less.
.SUN...NE winds 20 to 25 kt with gusts up to 35 kt. Seas 4 to
7 ft. Rain, snow with a chance of freezing rain. Vsby 1 NM or
less.
.SUN NIGHT...NW winds 20 to 25 kt with gusts up to 35 kt. Seas
4 to 6 ft. Light freezing spray likely. A chance of snow. Vsby
1 NM or less.
.MON...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to
5 ft. Freezing spray likely.
.MON NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt. Seas
3 to 5 ft. Freezing spray likely.

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.

$$

ANZ231-180700-
Cape Cod Bay-
116 PM EST Thu Jan 17 2019

.THIS AFTERNOON...N winds 5 to 10 kt. Seas around 2 ft.
.TONIGHT...S winds around 5 kt. Seas 1 foot or less. Snow likely.
.FRI...S winds 5 to 10 kt. Seas 1 foot or less. Snow likely with
a chance of rain. Vsby 1 to 3 NM.
.FRI NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft.
.SAT...N winds 10 to 15 kt. Gusts up to 20 kt in the morning.
Seas 2 to 3 ft.
.SAT NIGHT...E winds 10 to 15 kt with gusts up to 20 kt,
increasing to 15 to 20 kt with gusts up to 35 kt after midnight.
Seas 2 to 4 ft. Snow and rain. Vsby 1 NM or less.
.SUN...SE winds 15 to 20 kt with gusts up to 35 kt. Seas 4 to
6 ft. Rain. Vsby 1 to 3 NM.
.SUN NIGHT...NW winds 20 to 25 kt with gusts up to 35 kt. Seas
4 to 6 ft. Light freezing spray likely. A chance of snow and rain
likely. Vsby 1 to 3 NM.
.MON...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to
6 ft. Freezing spray likely. A chance of snow showers.
.MON NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt. Seas
4 to 6 ft. Freezing spray likely.

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.

$$

ANZ254-180700-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
116 PM EST Thu Jan 17 2019

.THIS AFTERNOON...N winds 5 to 10 kt. Seas 2 to 4 ft.
.TONIGHT...SE winds around 5 kt, increasing to 5 to 10 kt after
midnight. Seas 2 to 3 ft. A chance of snow.
.FRI...S winds 5 to 10 kt. Seas around 2 ft. Rain likely. Vsby
1 to 3 NM.
.FRI NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 ft.
.SAT...N winds 10 to 15 kt. Gusts up to 20 kt in the morning.
Seas 3 to 5 ft.
.SAT NIGHT...E winds 15 to 20 kt with gusts up to 25 kt,
increasing to 20 to 25 kt with gusts up to 35 kt after midnight.
Seas 5 to 8 ft. Snow and rain. Vsby 1 NM or less.
.SUN...S winds 20 to 25 kt with gusts up to 45 kt. Seas 8 to
11 ft. Rain. Vsby 1 to 3 NM.
.SUN NIGHT...NW winds 20 to 25 kt with gusts up to 35 kt. Seas
8 to 11 ft. Light freezing spray likely. Rain likely with a
chance of snow. Vsby 1 to 3 NM.
.MON...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 8 to
11 ft. Light freezing spray likely. A chance of snow showers.
.MON NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt. Seas
7 to 10 ft. Light freezing spray likely.

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.

$$

ANZ255-180700-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
116 PM EST Thu Jan 17 2019

.THIS AFTERNOON...NE winds 5 to 10 kt. Seas 2 to 3 ft.
.TONIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. A chance of snow.
.FRI...SE winds 5 to 10 kt, becoming S in the afternoon. Seas
around 2 ft. Rain likely. Vsby 1 to 3 NM.
.FRI NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft.
.SAT...NE winds 10 to 15 kt. Seas 2 to 4 ft.
.SAT NIGHT...E winds 15 to 20 kt with gusts up to 25 kt, becoming
SE 20 to 25 kt with gusts up to 40 kt after midnight. Seas 4 to
7 ft. Rain with snow likely. Vsby 1 to 3 NM.
.SUN...S winds 25 to 30 kt with gusts up to 45 kt. Seas 9 to
12 ft. Rain. Vsby 1 to 3 NM.
.SUN NIGHT...NW winds 20 to 25 kt with gusts up to 35 kt. Seas
9 to 12 ft. Light freezing spray likely. Rain likely with a
chance of snow. Vsby 1 to 3 NM.
.MON...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 7 to
10 ft. Freezing spray likely. A chance of snow showers.
.MON NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt. Seas
6 to 9 ft. Freezing spray likely.

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.

$$

ANZ256-180700-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
116 PM EST Thu Jan 17 2019

.THIS AFTERNOON...NE winds 5 to 10 kt. Seas around 2 ft.
.TONIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Rain likely
with a chance of snow.
.FRI...SE winds 10 to 15 kt, becoming SW 5 to 10 kt in the
afternoon. Seas around 2 ft. Rain. Vsby 1 to 3 NM.
.FRI NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft.
.SAT...NE winds 10 to 15 kt. Seas 2 to 3 ft.
.SAT NIGHT...E winds 15 to 20 kt, becoming SE 20 to 25 kt after
midnight. Gusts up to 35 kt. Seas 5 to 8 ft. Rain with snow
likely. Vsby 1 NM or less.
.SUN...S winds 20 to 25 kt with gusts up to 40 kt. Seas 8 to
13 ft. Rain. Vsby 1 to 3 NM.
.SUN NIGHT...NW winds 20 to 25 kt with gusts up to 35 kt. Seas
9 to 13 ft. Light freezing spray likely. A chance of snow and
rain.
.MON...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 7 to
10 ft. Light freezing spray likely.
.MON NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt. Seas
6 to 9 ft. Light freezing spray likely.

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.

$$

ANZ232-180700-
Nantucket Sound-
116 PM EST Thu Jan 17 2019

.THIS AFTERNOON...NE winds 5 to 10 kt. Seas around 2 ft.
.TONIGHT...SE winds around 5 kt, increasing to 5 to 10 kt after
midnight. Seas 1 foot or less. Snow likely.
.FRI...S winds 5 to 10 kt. Seas 1 foot or less. Snow with a
chance of rain. Vsby 1 to 3 NM.
.FRI NIGHT...W winds 5 to 10 kt, becoming NW 10 to 15 kt after
midnight. Gusts up to 20 kt. Seas 2 to 3 ft.
.SAT...N winds 10 to 15 kt. Seas 2 to 3 ft.
.SAT NIGHT...E winds 15 to 20 kt. Gusts up to 25 kt, increasing
to 35 kt after midnight. Seas 2 to 4 ft. Snow and rain. Vsby 1 NM
or less.
.SUN...S winds 15 to 20 kt with gusts up to 40 kt. Seas 4 to
7 ft. Rain. Vsby 1 to 3 NM.
.SUN NIGHT...NW winds 20 to 25 kt with gusts up to 35 kt. Seas
4 to 6 ft. Light freezing spray likely. Rain likely with a chance
of snow. Vsby 1 to 3 NM.
.MON...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to
6 ft. Freezing spray likely. A chance of snow showers.
.MON NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt. Seas
3 to 5 ft. Freezing spray likely.

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.

$$

ANZ233-180700-
Vineyard Sound-
116 PM EST Thu Jan 17 2019

.THIS AFTERNOON...NE winds around 5 kt. Seas 1 foot or less.
.TONIGHT...SE winds around 5 kt, increasing to 5 to 10 kt after
midnight. Seas 1 foot or less. Snow likely.
.FRI...SE winds 5 to 10 kt, becoming SW in the afternoon. Seas
1 foot or less. Snow with a chance of rain. Vsby 1 to 3 NM.
.FRI NIGHT...W winds 5 to 10 kt, becoming NW 10 to 15 kt after
midnight. Gusts up to 20 kt. Seas around 2 ft.
.SAT...N winds around 10 kt. Seas around 2 ft.
.SAT NIGHT...E winds 15 to 20 kt with gusts up to 30 kt. Seas
3 to 5 ft. Snow and rain. Vsby 1 NM or less.
.SUN...S winds 15 to 20 kt with gusts up to 35 kt. Seas 4 to
7 ft. Rain. Vsby 1 to 3 NM.
.SUN NIGHT...NW winds 20 to 25 kt with gusts up to 35 kt. Seas
4 to 7 ft. Light freezing spray likely. A chance of snow and
rain.
.MON...NW winds around 20 kt with gusts up to 30 kt. Seas 3 to
5 ft. Freezing spray likely.
.MON NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas
3 to 5 ft. Freezing spray likely.

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.

$$

ANZ234-180700-
Buzzards Bay-
116 PM EST Thu Jan 17 2019

.THIS AFTERNOON...NE winds around 5 kt. Seas 1 foot or less.
.TONIGHT...SE winds around 5 kt. Seas 1 foot or less. Snow
likely.
.FRI...SE winds 5 to 10 kt, becoming SW in the afternoon. Seas
1 foot or less. Snow with a chance of rain. Vsby 1 to 3 NM.
.FRI NIGHT...NW winds 5 to 10 kt. Seas around 2 ft.
.SAT...NE winds 5 to 10 kt. Seas around 2 ft.
.SAT NIGHT...E winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. Gusts up to 30 kt. Seas 2 to 4 ft. Snow and rain. Vsby
1 NM or less.
.SUN...S winds 15 to 20 kt with gusts up to 35 kt. Seas 4 to
7 ft. Rain. Vsby 1 to 3 NM.
.SUN NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas
3 to 5 ft. Light freezing spray likely. A chance of snow.
.MON...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to
4 ft. Freezing spray likely.
.MON NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas
2 to 3 ft. Freezing spray likely.

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.

$$

ANZ235-180700-
Rhode Island Sound-
116 PM EST Thu Jan 17 2019

.THIS AFTERNOON...E winds around 5 kt. Seas 1 foot or less.
.TONIGHT...SE winds 5 to 10 kt. Seas 1 foot or less. Snow likely.
.FRI...SE winds 10 to 15 kt, becoming SW 5 to 10 kt in the
afternoon. Seas around 2 ft. Rain likely. Vsby 1 to 3 NM.
.FRI NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft.
.SAT...NE winds 10 to 15 kt. Seas around 2 ft.
.SAT NIGHT...E winds 15 to 20 kt with gusts up to 25 kt,
increasing to 20 to 25 kt with gusts up to 35 kt after midnight.
Seas 4 to 6 ft. Rain with snow likely. Vsby 1 NM or less.
.SUN...S winds 15 to 20 kt with gusts up to 35 kt. Seas 7 to
10 ft. Rain. Vsby 1 to 3 NM.
.SUN NIGHT...NW winds 20 to 25 kt with gusts up to 35 kt. Seas
6 to 9 ft. Light freezing spray likely. A chance of snow.
.MON...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to
8 ft. Freezing spray likely.
.MON NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt. Seas
4 to 7 ft. Freezing spray likely.

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.

$$

ANZ237-180700-
Block Island Sound-
116 PM EST Thu Jan 17 2019

.THIS AFTERNOON...E winds around 5 kt. Seas 1 foot or less.
.TONIGHT...SE winds around 5 kt, increasing to 5 to 10 kt after
midnight. Seas 1 foot or less. A chance of snow.
.FRI...SE winds 5 to 10 kt, becoming SW in the afternoon. Seas
around 2 ft. Rain. Vsby 1 NM or less.
.FRI NIGHT...NW winds 5 to 10 kt with gusts up to 20 kt. Seas
around 2 ft.
.SAT...NE winds 5 to 10 kt. Seas around 2 ft. A chance of snow.
.SAT NIGHT...E winds 15 to 20 kt with gusts up to 30 kt. Seas
4 to 6 ft. Snow and rain. Vsby 1 NM or less.
.SUN...S winds 15 to 20 kt with gusts up to 35 kt. Seas 6 to
9 ft. Rain. Vsby 1 to 3 NM.
.SUN NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt. Seas
6 to 9 ft. Light freezing spray likely. A chance of snow.
.MON...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to
7 ft. Freezing spray likely.
.MON NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas
3 to 5 ft. Freezing spray likely.

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.

$$

ANZ230-180700-
Boston Harbor-
116 PM EST Thu Jan 17 2019

.THIS AFTERNOON...N winds around 5 kt. Waves 1 foot or less.
.TONIGHT...S winds around 5 kt. Waves 1 foot or less. Snow
likely.
.FRI...S winds around 5 kt. Waves 1 foot or less. Snow. Vsby 1 to
3 NM.
.FRI NIGHT...NW winds 5 to 10 kt with gusts up to 20 kt. Waves
1 foot or less.
.SAT...N winds 5 to 10 kt. Waves 1 foot or less.
.SAT NIGHT...NE winds 5 to 10 kt with gusts up to 20 kt, becoming
E 10 to 15 kt with gusts up to 30 kt after midnight. Waves 2 to
4 ft. Snow. Vsby 1 NM or less.
.SUN...NE winds 15 to 20 kt with gusts up to 30 kt. Waves 3 to
5 ft. Rain, snow, sleet and freezing rain. Vsby 1 NM or less.
.SUN NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Waves
around 2 ft. A chance of snow.
.MON...NW winds 15 to 20 kt with gusts up to 30 kt. Waves around
2 ft.
.MON NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Waves
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.

$$

ANZ236-180700-
Narragansett Bay-
116 PM EST Thu Jan 17 2019

.THIS AFTERNOON...E winds around 5 kt. Waves 1 foot or less.
.TONIGHT...SE winds around 5 kt. Waves 1 foot or less. Snow
likely.
.FRI...SE winds around 5 kt, becoming SW in the afternoon. Waves
1 foot or less. Snow likely with a chance of rain. Vsby 1 NM or
less.
.FRI NIGHT...NW winds 5 to 10 kt. Waves around 2 ft.
.SAT...NE winds 5 to 10 kt. Waves 1 foot or less.
.SAT NIGHT...E winds 10 to 15 kt. Gusts up to 20 kt, increasing
to 30 kt after midnight. Waves 2 to 4 ft. Snow and rain. Vsby
1 NM or less.
.SUN...SE winds 10 to 15 kt with gusts up to 30 kt. Waves 4 to
6 ft. Rain. Vsby 1 to 3 NM.
.SUN NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Waves
3 to 4 ft, except 4 to 7 ft at the bay entrance. Light freezing
spray likely. A chance of snow.
.MON...NW winds 15 to 20 kt with gusts up to 25 kt. Waves 2 to
3 ft. Freezing spray likely.
.MON NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Waves
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.

$$

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