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 150202
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
1001 PM EDT Sun Apr 14 2024

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

ANZ200-151500-
1001 PM EDT Sun Apr 14 2024

.Synopsis for Massachusetts and Rhode Island coastal waters...
A cold front will brings shower chances to the waters this afternoon
and early evening with the potential for a few rumbles of thunder
across the southern waters. Drying out Monday through Tuesday with
decreasing winds as a weak high pressure builds in. Weak low
pressure system could bring light could bring more light rain
towards the end of the week.

$$

ANZ250-151500-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
1001 PM EDT Sun Apr 14 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY AFTERNOON...

.OVERNIGHT...S winds around 15 kt, becoming SW. Gusts up to
20 kt. Seas 3 to 5 ft. Scattered showers.
.MON...W winds 5 to 10 kt, becoming SW in the afternoon. Seas
3 to 5 ft.
.MON NIGHT...SW winds around 10 kt, becoming W after midnight.
Seas 2 to 4 ft.
.TUE...W winds around 10 kt, becoming SW in the afternoon. Seas
2 to 3 ft.
.TUE NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas
2 to 3 ft.
.WED AND WED NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft.
.THU THROUGH FRI...SE winds around 10 kt. Seas 2 to 3 ft.
.FRI NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 4 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.

$$

ANZ251-151500-
Massachusetts Bay and Ipswich Bay-
1001 PM EDT Sun Apr 14 2024

.OVERNIGHT...S winds 10 to 15 kt with gusts up to 20 kt, becoming
SW 5 to 10 kt. Seas 2 to 3 ft. Scattered showers.
.MON...W winds 5 to 10 kt. Seas 2 to 3 ft.
.MON NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft.
.TUE...W winds 5 to 10 kt. Seas around 2 ft.
.TUE NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas
around 2 ft.
.WED AND WED NIGHT...SE winds 10 to 15 kt. Seas around 2 ft.
.THU THROUGH FRI...SE winds 5 to 10 kt. Seas 2 to 3 ft.
.FRI NIGHT...S winds around 10 kt with gusts up to 20 kt. Seas
2 to 3 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.

$$

ANZ231-151500-
Cape Cod Bay-
1001 PM EDT Sun Apr 14 2024

.OVERNIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt.
Gusts up to 25 kt. Seas 2 to 4 ft. Scattered showers. Vsby 1 to
3 NM.
.MON...W winds 5 to 10 kt, becoming E in the afternoon. Seas
around 2 ft.
.MON NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas
around 2 ft.
.TUE...W winds 5 to 10 kt, becoming SW in the afternoon. Seas
around 2 ft in the morning, then 1 foot or less.
.TUE NIGHT...SW winds around 5 kt, becoming NW after midnight.
Seas 1 foot or less.
.WED AND WED NIGHT...SE winds 5 to 10 kt. Seas 1 foot or less.
.THU THROUGH FRI...SE winds around 10 kt. Seas around 2 ft.
.FRI NIGHT...S winds around 10 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.

$$

ANZ254-151500-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
1001 PM EDT Sun Apr 14 2024

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

.OVERNIGHT...SW winds 20 to 25 kt with gusts up to 30 kt. Seas
5 to 7 ft. Scattered showers. Isolated tstms.
.MON...W winds 5 to 10 kt. Gusts up to 20 kt in the morning. Seas
4 to 6 ft.
.MON NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas
3 to 5 ft.
.TUE...W winds 5 to 10 kt. Seas 2 to 4 ft.
.TUE NIGHT...SW winds 5 to 10 kt, becoming NW after midnight.
Seas 2 to 3 ft.
.WED AND WED NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft.
.THU THROUGH FRI...SE winds around 10 kt with gusts up to 20 kt.
Seas 2 to 4 ft.
.FRI NIGHT...S winds around 10 kt. Seas 3 to 4 ft. A chance of
showers.

Winds and seas higher in and near tstms.

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.

$$

ANZ255-151500-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
1001 PM EDT Sun Apr 14 2024

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

.OVERNIGHT...SW winds 20 to 25 kt, diminishing to 15 to 20 kt.
Gusts up to 30 kt. Seas 5 to 7 ft. Scattered showers with
isolated tstms.
.MON...W winds 5 to 10 kt. Gusts up to 20 kt in the morning. Seas
5 to 7 ft.
.MON NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas
3 to 5 ft.
.TUE...W winds 10 to 15 kt. Seas 3 to 4 ft.
.TUE NIGHT...SW winds 10 to 15 kt, becoming W 5 to 10 kt after
midnight. Seas 2 to 4 ft.
.WED...N winds around 10 kt, becoming E in the afternoon. Seas
2 to 3 ft.
.WED NIGHT...E winds around 10 kt. Seas 2 to 3 ft. A chance of
showers.
.THU...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. A chance of showers.
.THU NIGHT AND FRI...E winds 10 to 15 kt. Gusts up to 20 kt. Seas
3 to 4 ft.
.FRI NIGHT...S winds 10 to 15 kt. Seas 3 to 4 ft. A chance of
showers.

Winds and seas higher in and near tstms.

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.

$$

ANZ256-151500-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
1001 PM EDT Sun Apr 14 2024

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

.OVERNIGHT...SW winds 20 to 25 kt, diminishing to 15 to 20 kt.
Gusts up to 30 kt. Seas 6 to 7 ft. Scattered showers with
isolated tstms. Vsby 1 to 3 NM.
.MON...W winds 5 to 10 kt. Seas 5 to 7 ft.
.MON NIGHT...W winds 5 to 10 kt. Seas 3 to 5 ft.
.TUE...NW winds around 10 kt, becoming W in the afternoon. Seas
3 to 4 ft.
.TUE NIGHT...SW winds 10 to 15 kt, becoming NW 5 to 10 kt after
midnight. Seas 3 to 4 ft.
.WED...N winds 5 to 10 kt, becoming E in the afternoon. Seas 2 to
3 ft.
.WED NIGHT...SE winds 10 to 15 kt. Gusts up to 20 kt after
midnight. Seas 2 to 3 ft. A chance of showers.
.THU AND THU NIGHT...E winds 10 to 15 kt with gusts up to 25 kt.
Seas 3 to 4 ft. A chance of showers.
.FRI...E winds 10 to 15 kt. Seas 3 to 4 ft.
.FRI NIGHT...S winds around 10 kt. Seas 3 to 4 ft. A chance of
showers.

Winds and seas higher in and near tstms.

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.

$$

ANZ232-151500-
Nantucket Sound-
1001 PM EDT Sun Apr 14 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY AFTERNOON...

.OVERNIGHT...SW winds 20 to 25 kt, diminishing to 15 to 20 kt.
Gusts up to 35 kt. Seas 3 to 5 ft. Scattered showers with
isolated tstms. Vsby 1 NM or less.
.MON...W winds 5 to 10 kt, becoming SW in the afternoon. Seas
2 to 4 ft.
.MON NIGHT...W winds 5 to 10 kt. Seas around 2 ft.
.TUE...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas
around 2 ft.
.TUE NIGHT...SW winds 5 to 10 kt, becoming NW after midnight.
Seas around 2 ft in the evening, then 1 foot or less.
.WED AND WED NIGHT...E winds 5 to 10 kt. Seas 1 foot or less.
.THU THROUGH FRI...E winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft.
.FRI NIGHT...S winds around 10 kt. Seas around 2 ft. A chance of
showers.

Winds and seas higher in and near tstms.

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.

$$

ANZ233-151500-
Vineyard Sound-
1001 PM EDT Sun Apr 14 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY AFTERNOON...

.OVERNIGHT...SW winds 20 to 25 kt, diminishing to 15 to 20 kt.
Gusts up to 30 kt. Seas 3 to 5 ft. Scattered showers with
isolated tstms. Vsby 1 NM or less.
.MON...W winds 5 to 10 kt. Seas 2 to 4 ft.
.MON NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft.
.TUE...W winds 5 to 10 kt, becoming SW 10 to 15 kt in the
afternoon. Seas around 2 ft.
.TUE NIGHT...W winds 10 to 15 kt, becoming NW 5 to 10 kt after
midnight. Seas around 2 ft.
.WED...N winds 5 to 10 kt, becoming E in the afternoon. Seas
around 2 ft in the morning, then 1 foot or less.
.WED NIGHT...SE winds around 10 kt. Seas 1 foot or less. A chance
of showers.
.THU AND THU NIGHT...E winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft. A chance of showers.
.FRI...SE winds around 10 kt. Seas around 2 ft.
.FRI NIGHT...S winds around 10 kt. Seas around 2 ft. A chance of
showers.

Winds and seas higher in and near tstms.

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.

$$

ANZ234-151500-
Buzzards Bay-
1001 PM EDT Sun Apr 14 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY AFTERNOON...

.OVERNIGHT...SW winds 20 to 25 kt, diminishing to 15 to 20 kt.
Gusts up to 30 kt. Seas 3 to 5 ft. Scattered showers with
isolated tstms. Vsby 1 NM or less.
.MON...W winds 5 to 10 kt. Seas 2 to 3 ft.
.MON NIGHT...W winds 5 to 10 kt. Seas around 2 ft.
.TUE...W winds 5 to 10 kt, becoming SW 10 to 15 kt in the
afternoon. Seas around 2 ft.
.TUE NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas
around 2 ft in the evening, then 1 foot or less.
.WED...N winds 5 to 10 kt, becoming SE in the afternoon. Seas
1 foot or less.
.WED NIGHT...SE winds around 10 kt. Seas 1 foot or less. A chance
of showers.
.THU AND THU NIGHT...E winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft. A chance of showers.
.FRI...SE winds 5 to 10 kt. Seas around 2 ft.
.FRI NIGHT...S winds around 10 kt. Seas around 2 ft. A chance of
showers.

Winds and seas higher in and near tstms.

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.

$$

ANZ235-151500-
Rhode Island Sound-
1001 PM EDT Sun Apr 14 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY AFTERNOON...

.OVERNIGHT...SW winds 20 to 25 kt, diminishing to 15 to 20 kt.
Gusts up to 30 kt. Seas 4 to 6 ft. Scattered showers with
isolated tstms. Vsby 1 to 3 NM.
.MON...W winds 5 to 10 kt. Seas 3 to 5 ft.
.MON NIGHT...W winds 5 to 10 kt. Seas 2 to 4 ft.
.TUE...W winds 5 to 10 kt, becoming SW 10 to 15 kt in the
afternoon. Seas 2 to 3 ft.
.TUE NIGHT...W winds 10 to 15 kt, becoming NW 5 to 10 kt after
midnight. Seas 2 to 3 ft.
.WED...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas
around 2 ft.
.WED NIGHT...SE winds around 10 kt. Seas around 2 ft. A chance of
showers.
.THU AND THU NIGHT...E winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. A chance of showers.
.FRI...E winds around 10 kt. Seas 2 to 3 ft.
.FRI NIGHT...S winds around 10 kt. Seas 2 to 3 ft. A chance of
showers.

Winds and seas higher in and near tstms.

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.

$$

ANZ237-151500-
Block Island Sound-
1001 PM EDT Sun Apr 14 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY AFTERNOON...

.OVERNIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas
4 to 6 ft. Scattered showers with isolated tstms. Vsby 1 NM or
less.
.MON...W winds 5 to 10 kt, becoming SW in the afternoon. Seas
3 to 5 ft.
.MON NIGHT...W winds 5 to 10 kt. Seas 2 to 4 ft.
.TUE...W winds 5 to 10 kt. Seas 2 to 3 ft.
.TUE NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas
2 to 3 ft.
.WED...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas
around 2 ft.
.WED NIGHT...SE winds around 10 kt. Gusts up to 20 kt after
midnight. Seas 2 to 3 ft. A chance of showers.
.THU AND THU NIGHT...E winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 4 ft. A chance of showers.
.FRI...E winds around 10 kt. Seas 2 to 3 ft.
.FRI NIGHT...S winds around 10 kt. Seas 2 to 3 ft. A chance of
showers.

Winds and seas higher in and near tstms.

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.

$$

ANZ230-151500-
Boston Harbor-
1001 PM EDT Sun Apr 14 2024

.OVERNIGHT...SW winds 5 to 10 kt. Waves 1 foot or less. Scattered
showers.
.MON...W winds 5 to 10 kt. Waves 1 foot or less.
.MON NIGHT...W winds 5 to 10 kt. Waves 1 foot or less.
.TUE...W winds 5 to 10 kt. Waves 1 foot or less.
.TUE NIGHT...NW winds 5 to 10 kt. Waves 1 foot or less.
.WED AND WED NIGHT...SE winds 10 to 15 kt. Waves around 2 ft.
.THU THROUGH FRI...SE winds 5 to 10 kt. Waves around 2 ft.
.FRI NIGHT...SW winds around 10 kt. Waves 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.

$$

ANZ236-151500-
Narragansett Bay-
1001 PM EDT Sun Apr 14 2024

.OVERNIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt.
Gusts up to 25 kt. Waves 3 to 5 ft. Scattered showers. Isolated
tstms. Vsby 1 NM or less.
.MON...W winds 5 to 10 kt. Waves 2 to 4 ft.
.MON NIGHT...NW winds 5 to 10 kt. Waves 2 to 3 ft.
.TUE...NW winds 5 to 10 kt, becoming W 10 to 15 kt in the
afternoon. Waves 2 to 3 ft.
.TUE NIGHT...W winds 5 to 10 kt, becoming NW after midnight.
Waves around 2 ft.
.WED...N winds 5 to 10 kt, becoming SE in the afternoon. Waves
around 2 ft.
.WED NIGHT...SE winds around 10 kt. Waves around 2 ft. A chance
of showers.
.THU AND THU NIGHT...E winds 5 to 10 kt with gusts up to 20 kt.
Waves 2 to 3 ft. A chance of showers.
.FRI...SE winds 5 to 10 kt. Waves 2 to 3 ft.
.FRI NIGHT...SW winds around 10 kt. Waves 2 to 3 ft. A chance of
showers.

Winds and waves higher in and near tstms.

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.