Coastal Waters Forecast
Issued by NWS Boston, MA

Current Version | Previous Version | Graphics & Text | Print | Product List | Glossary Off
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 240516
CWFBOX

Coastal Waters Forecast
National Weather Service Boston/Norton MA
116 AM EDT Thu May 24 2018

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

ANZ200-241800-
116 AM EDT Thu May 24 2018

.Synopsis for Massachusetts and Rhode Island coastal waters...
High pressure will build over the waters on Thursday and will settle
south of the waters on Friday. A cold front will slowly settle
across the waters from the north on Saturday. This front will become
mainly stationary over the waters for Sunday and Monday.

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.

$$

ANZ250-241800-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
116 AM EDT Thu May 24 2018

.REST OF TONIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft.
.THU...E winds around 5 kt, becoming SE 10 to 15 kt in the
afternoon. Seas 2 to 3 ft.
.THU NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas
2 to 4 ft.
.FRI...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft.
.FRI NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas
2 to 4 ft.
.SAT...SW winds 10 to 15 kt with gusts up to 25 kt, becoming S
5 to 10 kt in the afternoon. Seas 2 to 4 ft.
.SAT NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. A chance of showers. Vsby 1 to 3 NM.
.SUN...E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. A chance of showers. Vsby 1 to 3 NM.
.SUN NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas
4 to 6 ft. Areas of fog. A chance of showers. Vsby 1 to 3 NM.
.MON...E winds 5 to 10 kt. Seas 3 to 5 ft. A chance of showers.
Vsby 1 to 3 NM.
.MON NIGHT...W winds 5 to 10 kt. Seas 2 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.

$$

ANZ251-241800-
Massachusetts Bay and Ipswich Bay-
116 AM EDT Thu May 24 2018

.REST OF TONIGHT...NE winds around 5 kt. Seas around 2 ft.
.THU...NE winds around 5 kt, becoming SE 10 to 15 kt in the
afternoon. Seas 2 to 3 ft.
.THU NIGHT...S winds 10 to 15 kt, becoming SW 15 to 20 kt after
midnight. Gusts up to 25 kt. Seas 2 to 4 ft.
.FRI...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft.
.FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
around 2 ft.
.SAT...SW winds 5 to 10 kt, becoming S in the afternoon. Seas
around 2 ft.
.SAT NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of
showers. Vsby 1 to 3 NM.
.SUN...E winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers.
Vsby 1 to 3 NM.
.SUN NIGHT...E winds 5 to 10 kt. Seas 3 to 5 ft. A chance of
showers. Vsby 1 to 3 NM.
.MON...NE winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers.
Vsby 1 to 3 NM.
.MON NIGHT...NW winds around 5 kt. Seas 2 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.

$$

ANZ231-241800-
Cape Cod Bay-
116 AM EDT Thu May 24 2018

.REST OF TONIGHT...NE winds 5 to 10 kt. Seas around 2 ft.
.THU...E winds 5 to 10 kt. Seas around 2 ft.
.THU NIGHT...S winds 10 to 15 kt, becoming SW 15 to 20 kt after
midnight. Gusts up to 25 kt. Seas 2 to 3 ft.
.FRI...SW winds 15 to 20 kt. Seas 2 to 4 ft.
.FRI NIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Gusts up to 25 kt. Seas 2 to 4 ft.
.SAT...SW 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...S winds 5 to 10 kt, becoming E after midnight. Seas
2 to 3 ft. A chance of showers. Vsby 1 to 3 NM.
.SUN...E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers.
Vsby 1 to 3 NM.
.SUN NIGHT...E winds 5 to 10 kt. Seas 2 to 4 ft. A chance of
showers. Vsby 1 to 3 NM.
.MON...E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers.
Vsby 1 to 3 NM.
.MON NIGHT...W winds around 5 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.

$$

ANZ254-241800-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
116 AM EDT Thu May 24 2018

.REST OF TONIGHT...NE winds 5 to 10 kt. Seas 2 to 4 ft. Areas of
fog. Vsby 1 NM or less.
.THU...E winds 5 to 10 kt. Seas 2 to 4 ft. Areas of dense fog.
Vsby 1 NM or less.
.THU NIGHT...S winds 10 to 15 kt, becoming SW 15 to 20 kt after
midnight. Gusts up to 25 kt. Seas 2 to 4 ft.
.FRI...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft.
.FRI NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas
4 to 6 ft.
.SAT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 3 to 5 ft.
.SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt, becoming
SE 5 to 10 kt after midnight. Seas 2 to 4 ft. Areas of fog. A
chance of showers. Vsby 1 to 3 NM.
.SUN...E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. A chance of showers. Vsby 1 to 3 NM.
.SUN NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas
4 to 6 ft. Areas of fog. A chance of showers. Vsby 1 to 3 NM.
.MON...SE winds 5 to 10 kt. Seas 3 to 5 ft. Areas of fog. A
chance of showers. Vsby 1 to 3 NM.
.MON NIGHT...W winds around 5 kt. Seas 2 to 4 ft. Patchy fog. A
chance of showers. 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.

$$

ANZ255-241800-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
116 AM EDT Thu May 24 2018

.REST OF TONIGHT...N winds around 5 kt. Seas 3 to 4 ft. Areas of
fog. Vsby 1 NM or less.
.THU...E winds 5 to 10 kt. Seas 2 to 4 ft. Areas of fog. Vsby
1 NM or less.
.THU NIGHT...S winds 5 to 10 kt, becoming SW 10 to 15 kt after
midnight. Seas 3 to 4 ft.
.FRI...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to
6 ft.
.FRI NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas
4 to 6 ft.
.SAT...SW winds around 15 kt with gusts up to 25 kt. Seas 4 to
6 ft.
.SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas 3 to 4 ft. Areas
of fog. A chance of showers. Vsby 1 to 3 NM.
.SUN...E winds 5 to 10 kt. Seas 2 to 4 ft. Areas of fog. A chance
of showers. Vsby 1 to 3 NM.
.SUN NIGHT...E winds 5 to 10 kt. Seas 2 to 4 ft. Areas of fog. A
chance of showers. Vsby 1 to 3 NM.
.MON...E winds 5 to 10 kt. Seas 2 to 4 ft. Areas of fog. A chance
of showers. Vsby 1 to 3 NM.
.MON NIGHT...SW winds around 5 kt. Seas 2 to 4 ft. Patchy fog. A
chance of showers. 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.

$$

ANZ256-241800-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
116 AM EDT Thu May 24 2018

.REST OF TONIGHT...NW winds 5 to 10 kt. Seas around 4 ft.
.THU...N winds 5 to 10 kt, becoming E in the afternoon. Seas
around 3 ft. Areas of fog. Vsby 1 NM or less.
.THU NIGHT...S winds 5 to 10 kt, becoming SW 10 to 15 kt after
midnight. Seas 3 to 4 ft.
.FRI...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas 3 to 5 ft.
.FRI NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas
4 to 6 ft.
.SAT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to
6 ft.
.SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas 3 to 4 ft. A
chance of showers. Vsby 1 to 3 NM.
.SUN...E winds 5 to 10 kt. Seas around 3 ft. A chance of showers.
Vsby 1 to 3 NM.
.SUN NIGHT...NE winds 5 to 10 kt. Seas around 3 ft. A chance of
showers. Vsby 1 to 3 NM.
.MON...E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers.
Vsby 1 to 3 NM.
.MON NIGHT...S winds around 5 kt. Seas 2 to 3 ft. Patchy fog. A
chance of showers. 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.

$$

ANZ232-241800-
Nantucket Sound-
116 AM EDT Thu May 24 2018

.REST OF TONIGHT...NE winds around 5 kt. Seas 1 to 2 ft. Areas of
fog. Vsby 1 NM or less.
.THU...E winds 5 to 10 kt. Seas 1 to 2 ft. Areas of fog. Vsby
1 NM or less.
.THU NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas
2 to 3 ft.
.FRI...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft.
.FRI NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas
2 to 4 ft.
.SAT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft.
.SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt,
becoming S 5 to 10 kt after midnight. Seas 2 to 3 ft. Areas of
fog. A chance of showers. Vsby 1 to 3 NM.
.SUN...E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers.
Vsby 1 to 3 NM.
.SUN NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of
showers. Vsby 1 to 3 NM.
.MON...E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers.
Vsby 1 to 3 NM.
.MON NIGHT...W winds around 5 kt. Seas around 2 ft. A chance of
showers. 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.

$$

ANZ233-241800-
Vineyard Sound-
116 AM EDT Thu May 24 2018

.REST OF TONIGHT...N winds around 5 kt. Seas 1 to 2 ft.
.THU...NE winds 5 to 10 kt, becoming E in the afternoon. Seas
1 to 2 ft. Areas of fog. Vsby 1 NM or less.
.THU NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt after
midnight. Seas around 2 ft.
.FRI...SW winds 15 to 20 kt. Seas 2 to 4 ft.
.FRI NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas
2 to 4 ft.
.SAT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft.
.SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt,
becoming W 5 to 10 kt after midnight. Seas 2 to 3 ft. Areas of
fog. A chance of showers. Vsby 1 to 3 NM.
.SUN...NE winds 5 to 10 kt. Seas around 2 ft. A chance of
showers. Vsby 1 to 3 NM.
.SUN NIGHT...NE winds 5 to 10 kt. Seas around 2 ft. A chance of
showers. Vsby 1 to 3 NM.
.MON...E winds 5 to 10 kt. Seas around 2 ft. A chance of showers.
Vsby 1 to 3 NM.
.MON NIGHT...S winds around 5 kt. Seas around 2 ft. A chance of
showers.

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.

$$

ANZ234-241800-
Buzzards Bay-
116 AM EDT Thu May 24 2018

.REST OF TONIGHT...N winds around 5 kt. Seas around 2 ft.
.THU...NE winds around 5 kt, becoming SE in the afternoon. Seas
around 2 ft. Areas of fog. Vsby 1 NM or less.
.THU NIGHT...S winds 5 to 10 kt, becoming SW 10 to 15 kt with
gusts up to 20 kt after midnight. Seas 2 to 3 ft.
.FRI...SW winds 15 to 20 kt. Seas 2 to 4 ft.
.FRI NIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Gusts up to 25 kt. Seas 2 to 4 ft.
.SAT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft.
.SAT NIGHT...W winds 5 to 10 kt. Seas around 2 ft. A chance of
showers. Vsby 1 to 3 NM.
.SUN...NE winds 5 to 10 kt. Seas around 2 ft. A chance of
showers. Vsby 1 to 3 NM.
.SUN NIGHT...NE winds 5 to 10 kt. Seas 1 foot or less. A chance
of showers. Vsby 1 to 3 NM.
.MON...E winds around 5 kt. Seas 1 foot or less. A chance of
showers. Vsby 1 to 3 NM.
.MON NIGHT...S winds around 5 kt. Seas 1 foot or less. A chance
of showers.

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.

$$

ANZ235-241800-
Rhode Island Sound-
116 AM EDT Thu May 24 2018

.REST OF TONIGHT...N winds around 5 kt. Seas around 3 ft.
.THU...NE winds around 5 kt, becoming SE in the afternoon. Seas
2 to 3 ft. Areas of fog. Vsby 1 NM or less.
.THU NIGHT...S winds 5 to 10 kt, becoming SW 10 to 15 kt with
gusts up to 20 kt after midnight. Seas 2 to 4 ft.
.FRI...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft.
.FRI NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas
3 to 5 ft.
.SAT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to
5 ft.
.SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt,
becoming W 5 to 10 kt after midnight. Seas 2 to 4 ft. A chance of
showers. Vsby 1 to 3 NM.
.SUN...NE winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers.
Vsby 1 to 3 NM.
.SUN NIGHT...NE winds 5 to 10 kt. Seas around 2 ft. A chance of
showers. Vsby 1 to 3 NM.
.MON...E winds 5 to 10 kt. Seas around 2 ft. A chance of showers.
Vsby 1 to 3 NM.
.MON NIGHT...S winds around 5 kt. Seas around 2 ft. A chance of
showers.

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.

$$

ANZ237-241800-
Block Island Sound-
116 AM EDT Thu May 24 2018

.REST OF TONIGHT...NW winds around 5 kt. Seas 2 to 3 ft.
.THU...N winds around 5 kt, becoming SE in the afternoon. Seas
2 to 3 ft.
.THU NIGHT...S winds 5 to 10 kt, becoming SW 10 to 15 kt after
midnight. Seas 2 to 4 ft.
.FRI...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Seas 2 to 4 ft.
.FRI NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas
3 to 5 ft.
.SAT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft.
.SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas 2 to 4 ft. A
chance of showers. Vsby 1 to 3 NM.
.SUN...E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers.
Vsby 1 to 3 NM.
.SUN NIGHT...NE winds 5 to 10 kt. Seas around 2 ft. A chance of
showers. Vsby 1 to 3 NM.
.MON...E winds 5 to 10 kt. Seas around 2 ft. A chance of showers.
Vsby 1 to 3 NM.
.MON NIGHT...S winds around 5 kt. Seas around 2 ft. A chance of
showers. 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.

$$

ANZ230-241800-
Boston Harbor-
116 AM EDT Thu May 24 2018

.REST OF TONIGHT...NE winds around 5 kt. Waves 1 foot or less.
.THU...NE winds 5 to 10 kt, becoming E in the afternoon. Waves
1 foot or less.
.THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Waves
around 2 ft.
.FRI...SW winds 10 to 15 kt with gusts up to 20 kt. Waves around
2 ft.
.FRI NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Waves 1 foot or less.
.SAT...SW winds 5 to 10 kt. Waves 1 foot or less. A chance of
showers.
.SAT NIGHT...NE winds 5 to 10 kt. Waves 1 foot or less. A chance
of showers.
.SUN...NE winds 5 to 10 kt. Waves 1 foot or less. A chance of
showers.
.SUN NIGHT...NE winds around 5 kt. Waves 1 foot or less. A chance
of showers. Vsby 1 to 3 NM.
.MON...NE winds around 5 kt. Waves 1 foot or less. A chance of
showers.
.MON NIGHT...W 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.

$$

ANZ236-241800-
Narragansett Bay-
116 AM EDT Thu May 24 2018

.REST OF TONIGHT...N winds around 5 kt. Waves 2 to 3 ft.
.THU...N winds around 5 kt, becoming SE in the afternoon. Waves
around 2 ft.
.THU NIGHT...S winds 5 to 10 kt, becoming SW 10 to 15 kt after
midnight. Waves 2 to 3 ft.
.FRI...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Waves 2 to 3 ft.
.FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Waves
2 to 3 ft.
.SAT...SW winds 5 to 10 kt. Waves 2 to 3 ft.
.SAT NIGHT...SW winds 5 to 10 kt, becoming NW after midnight.
Waves around 2 ft. A chance of showers. Vsby 1 to 3 NM.
.SUN...NE winds 5 to 10 kt. Waves around 2 ft. A chance of
showers.
.SUN NIGHT...NE winds 5 to 10 kt. Waves around 2 ft. A chance of
showers. Vsby 1 to 3 NM.
.MON...E winds around 5 kt. Waves around 2 ft. A chance of
showers.
.MON NIGHT...S winds around 5 kt. Waves 1 foot or less. A chance
of showers.

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.