Coastal Waters Forecast
Issued by NWS Boston, MA

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
000
FZUS51 KBOX 172020
CWFBOX

Coastal Waters Forecast
National Weather Service Taunton MA
320 PM EST Sun Dec 17 2017

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

ANZ200-180915-
320 PM EST Sun Dec 17 2017

.Synopsis for Massachusetts and Rhode Island coastal waters...
High pres builds over New England today. A warm front approaches
tonight, then lifts north across the waters Mon. A cold front will
sweep across New England and the coastal waters Tue night  followed
by gusty winds Wed. High pres builds across the waters  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.

$$

ANZ250-180915-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
320 PM EST Sun Dec 17 2017

.TONIGHT...NW winds 5 to 10 kt, diminishing to around 5 kt after
midnight. Seas around 2 ft.
.MON...SW winds 5 to 10 kt. Seas around 2 ft. A chance of
flurries and light rain. Vsby 1 NM or less.
.MON NIGHT...W winds 10 to 15 kt. Seas around 2 ft. A chance of
light rain.
.TUE...W winds 10 to 15 kt with gusts up to 20 kt, becoming SW
15 to 20 kt with gusts up to 30 kt in the afternoon. Seas 2 to
4 ft.
.TUE NIGHT...W winds 15 to 20 kt, increasing to 20 to 25 kt after
midnight. Gusts up to 35 kt. Seas 4 to 7 ft.
.WED...W winds 20 to 25 kt, becoming NW 15 to 20 kt in the
afternoon. Gusts up to 35 kt. Seas 4 to 7 ft.
.WED NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas
4 to 7 ft.
.THU...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft.
.THU NIGHT...NW winds 5 to 10 kt with gusts up to 20 kt. Seas
2 to 4 ft.
.FRI...SE winds 10 to 15 kt with gusts up to 25 kt. Seas around
2 ft.
.FRI NIGHT...S winds 15 to 20 kt with gusts up to 30 kt. Seas
4 to 7 ft. A chance of rain.

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.

$$

ANZ251-180915-
Massachusetts Bay and Ipswich Bay-
320 PM EST Sun Dec 17 2017

.TONIGHT...NW winds 5 to 10 kt. Seas around 2 ft.
.MON...SW winds around 5 kt, increasing to 5 to 10 kt in the
afternoon. Seas 1 foot or less. A chance of flurries, light rain
and light freezing rain. Vsby 1 to 3 NM.
.MON NIGHT...SW winds 5 to 10 kt, becoming W 10 to 15 kt after
midnight. Seas 1 foot or less. A chance of light rain and light
freezing rain.
.TUE...SW winds 10 to 15 kt. Gusts up to 20 kt, increasing to
30 kt in the afternoon. Seas 2 to 3 ft.
.TUE NIGHT...W winds 10 to 15 kt with gusts up to 30 kt. Seas
around 3 ft.
.WED...W winds 15 to 20 kt with gusts up to 35 kt. Seas around
3 ft.
.WED NIGHT...NW winds 10 to 15 kt with gusts up to 30 kt. Seas
2 to 4 ft.
.THU...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
4 ft.
.THU NIGHT...NW winds 5 to 10 kt with gusts up to 20 kt. Seas
around 2 ft.
.FRI...SE winds 5 to 10 kt with gusts up to 25 kt. Seas around
2 ft.
.FRI NIGHT...S winds 10 to 15 kt with gusts up to 30 kt. Seas
2 to 4 ft. Rain 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.

$$

ANZ231-180915-
Cape Cod Bay-
320 PM EST Sun Dec 17 2017

.TONIGHT...NW winds 5 to 10 kt, diminishing to around 5 kt after
midnight. Seas around 2 ft.
.MON...SW winds around 5 kt, becoming S in the afternoon. Seas
1 foot or less.
.MON NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less.
.TUE...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 30 kt in the afternoon. Seas 2 to 4 ft.
.TUE NIGHT...W winds 15 to 20 kt with gusts up to 35 kt. Seas
3 to 5 ft.
.WED...W winds 15 to 20 kt with gusts up to 35 kt. Seas 3 to
5 ft.
.WED NIGHT...NW winds 10 to 15 kt with gusts up to 30 kt. Seas
3 to 5 ft.
.THU...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
4 ft.
.THU NIGHT...NW winds 5 to 10 kt. Seas around 2 ft.
.FRI...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 1 to
2 ft.
.FRI NIGHT...S winds 10 to 15 kt with gusts up to 30 kt. Seas
2 to 4 ft. A chance of rain.

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.

$$

ANZ254-180915-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
320 PM EST Sun Dec 17 2017

.TONIGHT...NW winds 5 to 10 kt, diminishing to around 5 kt after
midnight. Seas 2 to 3 ft.
.MON...SW winds around 5 kt, becoming S in the afternoon. Seas
around 2 ft.
.MON NIGHT...S winds 5 to 10 kt, becoming W 10 to 15 kt after
midnight. Gusts up to 20 kt. Seas 2 to 3 ft.
.TUE...SW winds 10 to 15 kt. Gusts up to 20 kt, increasing to
30 kt in the afternoon. Seas 2 to 4 ft.
.TUE NIGHT...W winds 15 to 20 kt with gusts up to 35 kt. Seas
4 to 7 ft.
.WED...NW winds 15 to 20 kt with gusts up to 35 kt. Seas 5 to
8 ft.
.WED NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas
5 to 8 ft.
.THU...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to
5 ft.
.THU NIGHT...NW winds 5 to 10 kt with gusts up to 20 kt. Seas
2 to 4 ft.
.FRI...SE winds 10 to 15 kt with gusts up to 25 kt. Seas around
2 ft.
.FRI NIGHT...S winds 15 to 20 kt with gusts up to 30 kt. Seas
4 to 6 ft. A chance of rain.

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.

$$

ANZ255-180915-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
320 PM EST Sun Dec 17 2017

.TONIGHT...N winds 5 to 10 kt, becoming NE after midnight. Seas
2 to 3 ft. A chance of flurries after midnight.
.MON...SE winds 5 to 10 kt. Seas around 2 ft. A chance of
flurries.
.MON NIGHT...SW winds 5 to 10 kt, becoming W 10 to 15 kt after
midnight. Gusts up to 20 kt. Seas 2 to 4 ft.
.TUE...W winds 10 to 15 kt with gusts up to 20 kt, increasing to
15 to 20 kt with gusts up to 30 kt in the afternoon. Seas 4 to
7 ft.
.TUE NIGHT...W winds 15 to 20 kt with gusts up to 35 kt. Seas
6 to 9 ft.
.WED...NW winds 15 to 20 kt with gusts up to 35 kt. Seas 5 to
8 ft.
.WED NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas
4 to 7 ft.
.THU...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
4 ft.
.THU NIGHT...N winds 5 to 10 kt. Seas 2 to 3 ft.
.FRI...SE winds 10 to 15 kt with gusts up to 25 kt. Seas around
2 ft.
.FRI NIGHT...S winds 15 to 20 kt with gusts up to 30 kt. Seas
4 to 6 ft. A chance of rain.

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.

$$

ANZ256-180915-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
320 PM EST Sun Dec 17 2017

.TONIGHT...N winds 5 to 10 kt, becoming E after midnight. Seas
around 2 ft. A chance of flurries after midnight.
.MON...SE winds 5 to 10 kt. Seas around 2 ft. A chance of
sprinkles.
.MON NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft.
.TUE...W winds 10 to 15 kt with gusts up to 20 kt, increasing to
15 to 20 kt with gusts up to 35 kt in the afternoon. Seas 4 to
7 ft.
.TUE NIGHT...W winds 15 to 20 kt with gusts up to 35 kt. Seas
6 to 8 ft.
.WED...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to
7 ft.
.WED NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas
4 to 6 ft.
.THU...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
4 ft.
.THU NIGHT...N winds 5 to 10 kt. Seas around 2 ft.
.FRI...SE winds 10 to 15 kt with gusts up to 25 kt. Seas around
2 ft.
.FRI NIGHT...S winds 15 to 20 kt with gusts up to 30 kt. Seas
4 to 7 ft. A chance of rain.

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.

$$

ANZ232-180915-
Nantucket Sound-
320 PM EST Sun Dec 17 2017

.TONIGHT...NW winds 5 to 10 kt, becoming N after midnight. Seas
1 foot or less. A chance of flurries after midnight.
.MON...E winds around 5 kt, becoming SE in the afternoon. Seas
1 foot or less. A chance of flurries.
.MON NIGHT...W winds 5 to 10 kt. Seas around 2 ft.
.TUE...W winds 10 to 15 kt. Gusts up to 20 kt, increasing to
30 kt in the afternoon. Seas 2 to 4 ft.
.TUE NIGHT...W winds 15 to 20 kt with gusts up to 35 kt. Seas
3 to 5 ft.
.WED...W winds 15 to 20 kt with gusts up to 35 kt. Seas 3 to
5 ft.
.WED NIGHT...NW winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Gusts up to 30 kt. Seas 2 to 3 ft.
.THU...NW winds 10 to 15 kt with gusts up to 25 kt. Seas around
2 ft.
.THU NIGHT...NW winds 5 to 10 kt. Seas 1 foot or less.
.FRI...SE winds 10 to 15 kt with gusts up to 25 kt. Seas 1 to
2 ft.
.FRI NIGHT...S winds 10 to 15 kt with gusts up to 30 kt. Seas
3 to 5 ft. A chance of rain.

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.

$$

ANZ233-180915-
Vineyard Sound-
320 PM EST Sun Dec 17 2017

.TONIGHT...NE winds around 5 kt. Seas 1 foot or less. A chance of
flurries after midnight.
.MON...SE winds around 5 kt. Seas 1 foot or less. A chance of
flurries.
.MON NIGHT...SW winds 5 to 10 kt, becoming W 10 to 15 kt with
gusts up to 20 kt after midnight. Seas around 2 ft.
.TUE...W winds 10 to 15 kt with gusts up to 20 kt, increasing to
15 to 20 kt with gusts up to 30 kt in the afternoon. Seas 2 to
4 ft.
.TUE NIGHT...W winds 15 to 20 kt with gusts up to 35 kt. Seas
4 to 6 ft.
.WED...W winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to
4 ft.
.WED NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas
2 to 3 ft.
.THU...NW winds 10 to 15 kt with gusts up to 25 kt. Seas around
2 ft.
.THU NIGHT...N winds 5 to 10 kt. Seas 1 foot or less.
.FRI...SE winds 10 to 15 kt with gusts up to 25 kt. Seas around
2 ft.
.FRI NIGHT...S winds 15 to 20 kt with gusts up to 30 kt. Seas
3 to 5 ft. A chance of rain.

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.

$$

ANZ234-180915-
Buzzards Bay-
320 PM EST Sun Dec 17 2017

.TONIGHT...N winds around 5 kt. Seas 1 foot or less. A chance of
flurries after midnight.
.MON...SE winds around 5 kt. Seas 1 foot or less. A chance of
flurries.
.MON NIGHT...W winds 5 to 10 kt. Seas 1 foot or less.
.TUE...W winds 10 to 15 kt. Gusts up to 20 kt, increasing to
30 kt in the afternoon. Seas 2 to 4 ft.
.TUE NIGHT...W winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Gusts up to 35 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 30 kt. Seas 2 to 4 ft.
.WED NIGHT...NW winds 10 to 15 kt with gusts up to 30 kt. Seas
2 to 3 ft.
.THU...NW winds 5 to 10 kt with gusts up to 20 kt. Seas around
2 ft.
.THU NIGHT...N winds around 5 kt. Seas 1 foot or less.
.FRI...SE winds 5 to 10 kt with gusts up to 20 kt. Seas 1 to
2 ft.
.FRI NIGHT...S winds 10 to 15 kt with gusts up to 30 kt. Seas
3 to 5 ft. A chance of rain.

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.

$$

ANZ235-180915-
Rhode Island Sound-
320 PM EST Sun Dec 17 2017

.TONIGHT...N winds around 5 kt, becoming NE after midnight. Seas
around 2 ft. A chance of flurries after midnight.
.MON...SE winds 5 to 10 kt. Seas around 2 ft. A chance of
flurries.
.MON NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft.
.TUE...W winds 10 to 15 kt with gusts up to 20 kt, increasing to
15 to 20 kt with gusts up to 35 kt in the afternoon. Seas 3 to
5 ft.
.TUE NIGHT...W winds 15 to 20 kt with gusts up to 35 kt. Seas
4 to 7 ft.
.WED...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to
6 ft.
.WED NIGHT...NW winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Gusts up to 30 kt. Seas 2 to 4 ft.
.THU...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
3 ft.
.THU NIGHT...N winds 5 to 10 kt. Seas around 2 ft.
.FRI...SE winds 10 to 15 kt with gusts up to 25 kt. Seas around
2 ft.
.FRI NIGHT...S winds 15 to 20 kt with gusts up to 30 kt. Seas
3 to 5 ft. A chance of rain.

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.

$$

ANZ237-180915-
Block Island Sound-
320 PM EST Sun Dec 17 2017

.TONIGHT...N winds around 5 kt, becoming NE around 5 kt after
midnight. Seas around 2 ft. Flurries likely after midnight.
.MON...E winds 5 to 10 kt, becoming S in the afternoon. Seas
around 2 ft.
.MON NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft.
.TUE...W winds 10 to 15 kt with gusts up to 20 kt, increasing to
15 to 20 kt with gusts up to 35 kt in the afternoon. Seas 2 to
4 ft.
.TUE NIGHT...W winds 15 to 20 kt with gusts up to 35 kt. Seas
4 to 6 ft.
.WED...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to
5 ft.
.WED NIGHT...NW winds 10 to 15 kt with gusts up to 30 kt. Seas
2 to 4 ft.
.THU...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
3 ft.
.THU NIGHT...N winds 5 to 10 kt. Seas around 2 ft.
.FRI...SE winds 10 to 15 kt with gusts up to 25 kt. Seas 1 to
2 ft.
.FRI NIGHT...S winds 10 to 15 kt with gusts up to 30 kt. Seas
3 to 5 ft. A chance of rain.

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.

$$

ANZ230-180915-
Boston Harbor-
320 PM EST Sun Dec 17 2017

.TONIGHT...NW winds 5 to 10 kt. Waves 1 foot or less. A slight
chance of flurries after midnight.
.MON...SW winds around 5 kt. Waves 1 foot or less. A chance of
flurries, light rain and light freezing rain.
.MON NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less. A chance
of light rain.
.TUE...SW winds 5 to 10 kt. Gusts up to 25 kt in the afternoon.
Waves around 2 ft.
.TUE NIGHT...W winds around 10 kt with gusts up to 30 kt. Waves
around 2 ft.
.WED...W winds 10 to 15 kt with gusts up to 30 kt. Waves around
2 ft.
.WED NIGHT...NW winds 5 to 10 kt with gusts up to 25 kt. Waves
around 2 ft.
.THU...NW winds 5 to 10 kt with gusts up to 20 kt. Waves 1 foot
or less.
.THU NIGHT...NW winds around 5 kt. Waves 1 foot or less.
.FRI...SE winds 5 to 10 kt. Waves 1 foot or less.
.FRI NIGHT...S winds 5 to 10 kt with gusts up to 25 kt. Waves
around 2 ft. Rain 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.

$$

ANZ236-180915-
Narragansett Bay-
320 PM EST Sun Dec 17 2017

.TONIGHT...NE winds around 5 kt. Waves 1 foot or less. A chance
of flurries after midnight.
.MON...SE winds around 5 kt. Waves 1 foot or less. A chance of
flurries.
.MON NIGHT...W winds 5 to 10 kt. Waves around 2 ft.
.TUE...W winds 5 to 10 kt with gusts up to 20 kt, becoming SW
10 to 15 kt with gusts up to 30 kt in the afternoon. Waves 2 to
3 ft.
.TUE NIGHT...W winds 10 to 15 kt with gusts up to 30 kt. Waves
2 to 4 ft.
.WED...W winds 10 to 15 kt with gusts up to 30 kt. Waves around
3 ft.
.WED NIGHT...NW winds 10 to 15 kt, diminishing to 5 to 10 kt
after midnight. Gusts up to 25 kt. Waves around 2 ft.
.THU...NW winds 5 to 10 kt with gusts up to 20 kt. Waves 1 foot
or less.
.THU NIGHT...N winds around 5 kt. Waves 1 foot or less.
.FRI...SE winds 5 to 10 kt with gusts up to 20 kt. Waves around
2 ft.
.FRI NIGHT...S winds 10 to 15 kt with gusts up to 25 kt. Waves
2 to 4 ft. Rain 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.

$$

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



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.