National Weather Service National Headquarters

• Home
• Site Map
• News
• Organization
• Search for: NWS All NOAA 

000
FZUS51 KBOX 161519
CWFBOX

Coastal Waters Forecast
National Weather Service Boston/Norton MA
1019 AM EST Sat Feb 16 2019

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

ANZ200-170445-
1019 AM EST Sat Feb 16 2019

.Synopsis for Massachusetts and Rhode Island coastal waters...
Canadian high pres builds across New England today and Sun. Low
pres approaches the waters from the SW Sun night, passing just S
of the waters on Mon. High pres builds in from the W on Tue and
Wed. Low pres approaches the waters from the SW Wed night, then
passes S of the waters on Thu.

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.

$$

ANZ250-170445-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
1019 AM EST Sat Feb 16 2019

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...

.THIS AFTERNOON...NW winds 10 to 15 kt with gusts up to 25 kt.
Seas 5 to 6 ft.
.TONIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to
5 ft.
.SUN...N winds 5 to 10 kt. Seas 3 to 4 ft.
.SUN NIGHT...SE winds 5 to 10 kt. Seas around 3 ft. A chance of
snow. Vsby 1 to 3 NM.
.MON...NE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 3 to 4 ft. A chance of snow. Vsby 1 to 3 NM.
.MON NIGHT...N winds 10 to 15 kt. Gusts up to 20 kt after
midnight. Seas around 5 ft. A chance of snow in the evening. Vsby
1 to 3 NM.
.TUE...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
5 ft.
.TUE NIGHT...NW winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Gusts up to 25 kt. Seas around 4 ft.
.WED...NW 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.
.WED NIGHT...N winds 5 to 10 kt, becoming E 10 to 15 kt after
midnight. Seas around 3 ft. A chance of snow. Vsby 1 to 3 NM.

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.

$$

ANZ251-170445-
Massachusetts Bay and Ipswich Bay-
1019 AM EST Sat Feb 16 2019

.THIS AFTERNOON...NW 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 20 kt. Seas
around 3 ft.
.SUN...NW winds 5 to 10 kt, becoming NE in the afternoon. Seas
2 to 3 ft.
.SUN NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. A chance of
snow. Vsby 1 to 3 NM.
.MON...NE winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. Seas 2 to 3 ft. A chance of snow. Vsby 1 to 3 NM.
.MON NIGHT...N winds 10 to 15 kt. Gusts up to 20 kt after
midnight. Seas around 4 ft.
.TUE...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
4 ft.
.TUE NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft.
.WED...NW winds 5 to 10 kt. Seas around 2 ft in the morning, then
1 foot or less.
.WED NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of
snow. Vsby 1 to 3 NM.

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.

$$

ANZ231-170445-
Cape Cod Bay-
1019 AM EST Sat Feb 16 2019

.THIS AFTERNOON...NW 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 20 kt. Seas
around 3 ft.
.SUN...N winds 5 to 10 kt. Seas 2 to 3 ft.
.SUN NIGHT...SE winds around 5 kt. Seas 1 foot or less. A chance
of snow in the evening, then snow likely after midnight. Vsby
1 to 3 NM.
.MON...NE winds 5 to 10 kt. Seas 2 to 3 ft. Snow likely, mainly
in the morning. Vsby 1 to 3 NM.
.MON NIGHT...N winds 5 to 10 kt, becoming NW 10 to 15 kt with
gusts up to 20 kt after midnight. Seas around 3 ft. A chance of
snow in the evening. Vsby 1 to 3 NM.
.TUE...NW winds 10 to 15 kt with gusts up to 20 kt. Seas around
3 ft.
.TUE NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas
around 3 ft.
.WED...NW winds 10 to 15 kt, becoming N 5 to 10 kt in the
afternoon. Seas 2 to 3 ft.
.WED NIGHT...E winds 5 to 10 kt. Seas around 2 ft. A chance of
snow. Vsby 1 to 3 NM.

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.

$$

ANZ254-170445-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
1019 AM EST Sat Feb 16 2019

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...

.THIS AFTERNOON...NW winds 10 to 15 kt with gusts up to 25 kt.
Seas 5 to 6 ft.
.TONIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas
around 5 ft.
.SUN...N winds 5 to 10 kt. Seas 3 to 4 ft.
.SUN NIGHT...S winds around 5 kt, becoming E after midnight. Seas
around 3 ft. A chance of snow in the evening, then snow likely
after midnight. Vsby 1 to 3 NM.
.MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
5 ft. Snow likely, mainly in the morning. Vsby 1 to 3 NM.
.MON NIGHT...N winds 5 to 10 kt, increasing to 10 to 15 kt with
gusts up to 20 kt after midnight. Seas 5 to 6 ft. A chance of
snow in the evening. Vsby 1 to 3 NM.
.TUE...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to
6 ft.
.TUE NIGHT...NW winds 10 to 15 kt, increasing to 15 to 20 kt
after midnight. Gusts up to 25 kt. Seas 4 to 5 ft.
.WED...NW winds 10 to 15 kt with gusts up to 20 kt, becoming N
5 to 10 kt in the afternoon. Seas 3 to 4 ft.
.WED NIGHT...NE winds 5 to 10 kt, becoming E 10 to 15 kt after
midnight. Seas 3 to 4 ft. A chance of snow. A chance of freezing
rain and sleet after midnight. Vsby 1 to 3 NM.

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.

$$

ANZ255-170445-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
1019 AM EST Sat Feb 16 2019

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...

.THIS AFTERNOON...NW winds 10 to 15 kt with gusts up to 25 kt.
Seas 5 to 6 ft.
.TONIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
5 ft.
.SUN...N winds 5 to 10 kt. Seas 3 to 4 ft.
.SUN NIGHT...E winds 5 to 10 kt. Seas around 3 ft. A chance of
snow in the evening, then snow and rain likely after midnight.
Vsby 1 to 3 NM.
.MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
5 ft. Snow and rain likely, mainly in the morning. Vsby 1 to
3 NM.
.MON NIGHT...N winds 5 to 10 kt, increasing to 10 to 15 kt with
gusts up to 20 kt after midnight. Seas 5 to 6 ft.
.TUE...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
5 ft.
.TUE NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas
around 4 ft.
.WED...N winds 5 to 10 kt. Seas 2 to 3 ft.
.WED NIGHT...E winds 5 to 10 kt, increasing to 10 to 15 kt with
gusts up to 20 kt after midnight. Seas 3 to 4 ft. A chance of
snow. A chance of sleet, rain and freezing rain after midnight.
Vsby 1 to 3 NM.

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.

$$

ANZ256-170445-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
1019 AM EST Sat Feb 16 2019

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

.THIS AFTERNOON...NW winds 10 to 15 kt with gusts up to 25 kt.
Seas 6 to 7 ft.
.TONIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
5 ft.
.SUN...N winds 5 to 10 kt, becoming E in the afternoon. Seas 3 to
4 ft.
.SUN NIGHT...SE winds 5 to 10 kt, becoming E 10 to 15 kt with
gusts up to 20 kt after midnight. Seas around 3 ft. A chance of
snow in the evening, then snow and rain likely after midnight.
Vsby 1 to 3 NM.
.MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas around
5 ft. Rain and snow likely, mainly in the morning. Vsby 1 to
3 NM.
.MON NIGHT...N winds 10 to 15 kt. Gusts up to 20 kt after
midnight. Seas around 5 ft.
.TUE...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
5 ft.
.TUE NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 4 ft.
.WED...NE winds 5 to 10 kt. Seas 2 to 3 ft. A chance of snow in
the afternoon with vsby 1 to 3 NM.
.WED NIGHT...E winds 10 to 15 kt. Gusts up to 20 kt after
midnight. Seas around 3 ft, building to 5 ft after midnight. A
chance of snow and sleet. A chance of rain and freezing rain
after midnight. Vsby 1 to 3 NM.

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.

$$

ANZ232-170445-
Nantucket Sound-
1019 AM EST Sat Feb 16 2019

.THIS AFTERNOON...NW winds 5 to 10 kt with gusts up to 20 kt.
Seas around 3 ft.
.TONIGHT...NW winds 5 to 10 kt, becoming N 10 to 15 kt with gusts
up to 20 kt after midnight. Seas around 2 ft.
.SUN...NE winds 5 to 10 kt. Seas around 2 ft in the morning, then
1 foot or less.
.SUN NIGHT...S winds around 5 kt, becoming E after midnight. Seas
1 foot or less. A chance of snow in the evening, then snow likely
after midnight. Vsby 1 to 3 NM.
.MON...NE winds 5 to 10 kt. Gusts up to 20 kt in the morning.
Seas 2 to 3 ft. Snow likely, mainly in the morning. Vsby 1 to
3 NM.
.MON NIGHT...N winds 5 to 10 kt. Gusts up to 20 kt after
midnight. Seas around 3 ft. A chance of snow in the evening. Vsby
1 to 3 NM.
.TUE...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft.
.TUE NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas
around 2 ft.
.WED...N winds 5 to 10 kt. Seas around 2 ft in the morning, then
1 foot or less.
.WED NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of
snow. A chance of sleet after midnight. Vsby 1 to 3 NM.

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.

$$

ANZ233-170445-
Vineyard Sound-
1019 AM EST Sat Feb 16 2019

.THIS AFTERNOON...NW winds around 10 kt with gusts up to 20 kt.
Seas around 3 ft.
.TONIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft.
.SUN...N winds 5 to 10 kt, becoming E in the afternoon. Seas
around 2 ft.
.SUN NIGHT...SE winds around 5 kt, becoming E after midnight.
Seas around 2 ft. A chance of snow in the evening, then snow
likely after midnight. Vsby 1 to 3 NM.
.MON...NE winds 5 to 10 kt. Seas around 2 ft. Snow likely, mainly
in the morning. Vsby 1 to 3 NM.
.MON NIGHT...N winds 5 to 10 kt, becoming NW 10 to 15 kt with
gusts up to 20 kt after midnight. Seas around 3 ft. A chance of
snow in the evening with vsby 1 to 3 NM.
.TUE...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft.
.TUE NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas
around 2 ft.
.WED...N winds 5 to 10 kt. Seas 1 foot or less. A chance of snow
in the afternoon with vsby 1 to 3 NM.
.WED NIGHT...E winds 5 to 10 kt, increasing to 10 to 15 kt with
gusts up to 20 kt after midnight. Seas 2 to 3 ft. A chance of
snow. A chance of sleet and freezing rain after midnight. Vsby
1 to 3 NM.

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.

$$

ANZ234-170445-
Buzzards Bay-
1019 AM EST Sat Feb 16 2019

.THIS AFTERNOON...NW winds around 10 kt with gusts up to 20 kt.
Seas around 3 ft.
.TONIGHT...N winds 5 to 10 kt. Seas around 2 ft in the evening,
then 1 foot or less.
.SUN...N winds 5 to 10 kt, becoming E in the afternoon. Seas
1 foot or less.
.SUN NIGHT...S winds around 5 kt, becoming E after midnight. Seas
1 foot or less. A chance of snow in the evening, then snow likely
after midnight. Vsby 1 to 3 NM.
.MON...NE winds 5 to 10 kt. Seas around 2 ft. Snow likely, mainly
in the morning. Vsby 1 to 3 NM.
.MON NIGHT...N winds 5 to 10 kt. Gusts up to 20 kt after
midnight. Seas around 2 ft.
.TUE...NW winds 5 to 10 kt. Seas around 2 ft.
.TUE NIGHT...NW winds 5 to 10 kt with gusts up to 20 kt. Seas
around 2 ft.
.WED...N winds 5 to 10 kt. Seas 1 foot or less.
.WED NIGHT...E winds 5 to 10 kt. Seas around 2 ft. A chance of
snow. A chance of sleet after midnight. Vsby 1 to 3 NM.

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.

$$

ANZ235-170445-
Rhode Island Sound-
1019 AM EST Sat Feb 16 2019

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM EST THIS AFTERNOON...

.THIS AFTERNOON...NW winds 10 to 15 kt with gusts up to 20 kt.
Seas around 5 ft.
.TONIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas
around 4 ft.
.SUN...N winds 5 to 10 kt, becoming E in the afternoon. Seas 2 to
3 ft.
.SUN NIGHT...SE winds 5 to 10 kt, becoming E 10 to 15 kt after
midnight. Seas 2 to 3 ft. A chance of snow in the evening, then
snow likely after midnight. Vsby 1 to 3 NM.
.MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas around
3 ft. Snow likely, mainly in the morning. Vsby 1 to 3 NM.
.MON NIGHT...N winds 10 to 15 kt. Gusts up to 20 kt after
midnight. Seas around 4 ft.
.TUE...NW winds 10 to 15 kt with gusts up to 20 kt. Seas around
3 ft.
.TUE NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft.
.WED...NE winds 5 to 10 kt. Seas around 2 ft. A chance of snow in
the afternoon with vsby 1 to 3 NM.
.WED NIGHT...E winds 10 to 15 kt. Gusts up to 20 kt after
midnight. Seas 3 to 4 ft. A chance of snow. A chance of sleet,
rain and freezing rain after midnight. Vsby 1 to 3 NM.

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.

$$

ANZ237-170445-
Block Island Sound-
1019 AM EST Sat Feb 16 2019

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM EST THIS AFTERNOON...

.THIS AFTERNOON...NW winds 10 to 15 kt with gusts up to 20 kt.
Seas 4 to 5 ft.
.TONIGHT...NW winds 10 to 15 kt with gusts up to 20 kt, becoming
N 5 to 10 kt after midnight. Seas 3 to 4 ft.
.SUN...N winds 5 to 10 kt, becoming SE in the afternoon. Seas
2 to 3 ft.
.SUN NIGHT...SE winds around 5 kt, becoming E after midnight.
Seas 2 to 3 ft. A chance of snow in the evening, then snow likely
after midnight. Vsby 1 to 3 NM.
.MON...NE winds 10 to 15 kt with gusts up to 20 kt, diminishing
to 5 to 10 kt in the afternoon. Seas around 4 ft. Snow likely,
mainly in the morning. Vsby 1 to 3 NM.
.MON NIGHT...N winds 5 to 10 kt, becoming NW 10 to 15 kt with
gusts up to 20 kt after midnight. Seas around 4 ft.
.TUE...NW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas around 3 ft.
.TUE NIGHT...NW winds 5 to 10 kt with gusts up to 20 kt. Seas
2 to 3 ft.
.WED...NE winds 5 to 10 kt. Seas 1 foot or less, then around 2 ft
in the afternoon. A chance of snow in the afternoon.
.WED NIGHT...E winds 5 to 10 kt, increasing to 10 to 15 kt with
gusts up to 20 kt after midnight. Seas 3 to 4 ft. A chance of
snow. A chance of sleet, rain and freezing rain after midnight.
Vsby 1 to 3 NM.

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.

$$

ANZ230-170445-
Boston Harbor-
1019 AM EST Sat Feb 16 2019

.THIS AFTERNOON...NW winds 10 to 15 kt with gusts up to 20 kt.
Waves around 2 ft.
.TONIGHT...NW winds 10 to 15 kt, diminishing to 5 to 10 kt after
midnight. Gusts up to 20 kt. Waves around 2 ft.
.SUN...NW winds 5 to 10 kt, becoming NE in the afternoon. Waves
1 foot or less.
.SUN NIGHT...SE winds around 5 kt, becoming NE after midnight.
Waves 1 foot or less. A chance of snow. Vsby 1 to 3 NM.
.MON...NE winds 5 to 10 kt. Waves 1 foot or less. Snow likely,
mainly in the morning. Vsby 1 to 3 NM.
.MON NIGHT...NW winds 5 to 10 kt. Waves 1 foot or less, then
around 2 ft after midnight.
.TUE...NW winds around 10 kt. Waves around 2 ft.
.TUE NIGHT...NW winds 5 to 10 kt. Waves 1 foot or less.
.WED...N winds 5 to 10 kt. Waves 1 foot or less. A chance of snow
in the afternoon with vsby 1 to 3 NM.
.WED NIGHT...E winds 5 to 10 kt. Waves 1 foot or less. A chance
of snow. Vsby 1 to 3 NM.

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.

$$

ANZ236-170445-
Narragansett Bay-
1019 AM EST Sat Feb 16 2019

.THIS AFTERNOON...NW winds around 10 kt with gusts up to 20 kt.
Waves around 2 ft.
.TONIGHT...N winds 5 to 10 kt. Waves 1 to 2 ft.
.SUN...N winds 5 to 10 kt, becoming SE in the afternoon. Waves
around 2 ft.
.SUN NIGHT...S winds around 5 kt, becoming E after midnight.
Waves 1 to 2 ft. A chance of snow in the evening, then snow
likely after midnight. Vsby 1 to 3 NM.
.MON...NE winds 5 to 10 kt. Waves 1 to 2 ft. Snow likely, mainly
in the morning. Vsby 1 to 3 NM.
.MON NIGHT...NW winds 5 to 10 kt. Waves 1 to 2 ft.
.TUE...NW winds 5 to 10 kt. Waves 1 to 2 ft.
.TUE NIGHT...NW winds 5 to 10 kt. Waves around 2 ft in the
evening, then 1 foot or less.
.WED...N winds around 5 kt. Waves 1 foot or less. A chance of
snow in the afternoon with vsby 1 to 3 NM.
.WED NIGHT...E winds 5 to 10 kt. Waves 1 to 2 ft. A chance of
snow. A chance of sleet and freezing rain after midnight. Vsby 1
to 3 NM.

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.

$$

For the latest updates, please visit our webpage at
www.weather.gov/boston

You can follow us on Facebook at
www.facebook.com/NWSBoston

You can follow us on Twitter at
@NWSBoston