Coastal Waters Forecast
Issued by NWS Boston, MA

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000
FZUS51 KBOX 272301
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
701 PM EDT Wed Mar 27 2024

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

ANZ200-281200-
701 PM EDT Wed Mar 27 2024

.Synopsis for Massachusetts and Rhode Island coastal waters...
A slowly-moving cold front over the mid-Atlantic region will trudge
eastward toward the Atlantic coastline through Thurs. A low pressure
emerges off this cold front and strengthens into a gale center on
Fri. This will spread steady rains Thurs into Fri, as well as NW
gales later Fri and Fri night as gale center moves into the offshore
waters. High pres builds in for the weekend, with gradually
decreasing WNW gusts this weekend.

$$

ANZ250-281200-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
701 PM EDT Wed Mar 27 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY MORNING...

.TONIGHT...NE winds around 5 kt. Seas 4 to 6 ft. Patchy fog. A
chance of rain with patchy drizzle this evening. Rain likely
after midnight. Vsby 1 NM or less.
.THU...N winds around 5 kt. Seas 4 to 6 ft. Patchy fog. Rain.
Vsby 1 NM or less.
.THU NIGHT...N winds 10 to 15 kt, increasing to 15 to 20 kt with
gusts up to 25 kt after midnight. Seas 4 to 5 ft, building to
5 to 7 ft after midnight. Patchy fog. Rain. Vsby 1 NM or less,
increasing to 1 to 3 NM after midnight.
.FRI...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to
8 ft. Rain likely, mainly in the morning. Patchy fog in the
morning with vsby 1 to 3 NM.
.FRI NIGHT...NW winds 25 to 30 kt with gusts up to 40 kt. Seas
6 to 8 ft. A chance of rain in the evening.
.SAT...W winds 25 to 30 kt, diminishing to 20 to 25 kt in the
afternoon. Seas 5 to 8 ft.
.SAT NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas
3 to 5 ft.
.SUN THROUGH MON...N winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 4 ft.
.MON NIGHT...S winds around 10 kt. Seas 2 to 3 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.

$$

ANZ251-281200-
Massachusetts Bay and Ipswich Bay-
701 PM EDT Wed Mar 27 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING...

.TONIGHT...E winds around 5 kt. Seas 3 to 5 ft. Patchy fog. A
chance of rain with patchy drizzle this evening, then rain likely
after midnight with vsby 1 NM or less.
.THU...N winds around 5 kt. Seas 2 to 4 ft. Patchy fog. Rain.
Vsby 1 NM or less.
.THU NIGHT...N winds 5 to 10 kt, increasing to 15 to 20 kt with
gusts up to 25 kt after midnight. Seas 2 to 4 ft. Patchy fog.
Rain. Vsby 1 NM or less, increasing to 1 to 3 NM after midnight.
.FRI...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to
6 ft. Rain likely, mainly in the morning. Patchy fog in the
morning with vsby 1 to 3 NM.
.FRI NIGHT...NW winds 25 to 30 kt with gusts up to 35 kt. Seas
4 to 6 ft. A chance of rain in the evening.
.SAT...W winds 25 to 30 kt, diminishing to 20 to 25 kt in the
afternoon. Seas 4 to 6 ft.
.SAT NIGHT...NW winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Gusts up to 25 kt. Seas 2 to 4 ft.
.SUN THROUGH MON...N winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft.
.MON NIGHT...S winds around 10 kt. Seas around 2 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.

$$

ANZ231-281200-
Cape Cod Bay-
701 PM EDT Wed Mar 27 2024

.TONIGHT...NE winds around 5 kt. Seas 2 to 3 ft. Patchy fog. A
chance of rain with patchy drizzle this evening, then rain likely
after midnight. Vsby 1 to 3 NM, decreasing to 1 NM or less after
midnight.
.THU...N winds around 5 kt. Seas 2 to 3 ft. Patchy fog. Rain.
Vsby 1 NM or less.
.THU NIGHT...N winds 5 to 10 kt, increasing to 15 to 20 kt with
gusts up to 25 kt after midnight. Seas 2 to 4 ft. Patchy fog.
Rain. Vsby 1 NM or less, increasing to 1 to 3 NM after midnight.
.FRI...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to
6 ft. Rain likely, mainly in the morning. Patchy fog in the
morning with vsby 1 to 3 NM.
.FRI NIGHT...NW winds 20 to 25 kt with gusts up to 35 kt. Seas
4 to 6 ft. A chance of rain in the evening.
.SAT...W winds 20 to 25 kt, diminishing to 15 to 20 kt in the
afternoon. Gusts up to 30 kt. Seas 4 to 6 ft.
.SAT NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft.
.SUN THROUGH MON...N winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft.
.MON NIGHT...S winds around 10 kt. Seas 1 foot or less. 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.

$$

ANZ254-281200-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
701 PM EDT Wed Mar 27 2024

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

.TONIGHT...NE winds around 5 kt. Seas 4 to 6 ft. Patchy fog. A
slight chance of rain with patchy drizzle this evening, then rain
after midnight. Vsby 1 NM or less.
.THU...N winds 5 to 10 kt. Seas 4 to 6 ft. Patchy fog. Rain. Vsby
1 NM or less.
.THU NIGHT...N winds around 10 kt, increasing to 15 to 20 kt with
gusts up to 25 kt after midnight. Seas 5 to 7 ft. Patchy fog.
Rain. Vsby 1 NM or less, increasing to 1 to 3 NM after midnight.
.FRI...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 6 to
9 ft. Rain likely. Patchy fog in the morning with vsby 1 to 3 NM.
.FRI NIGHT...NW winds 20 to 25 kt, becoming W 25 to 30 kt after
midnight. Gusts up to 40 kt. Seas 7 to 9 ft. A chance of rain in
the evening.
.SAT...W winds 25 to 30 kt, diminishing to 20 to 25 kt in the
afternoon. Seas 6 to 9 ft.
.SAT NIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Seas
4 to 6 ft.
.SUN THROUGH MON...N winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 4 ft.
.MON NIGHT...N winds 5 to 10 kt. Seas 2 to 3 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.

$$

ANZ255-281200-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
701 PM EDT Wed Mar 27 2024

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

.TONIGHT...NE winds around 5 kt. Seas 4 to 6 ft. Patchy fog. A
slight chance of rain with patchy drizzle this evening, then rain
likely after midnight. Vsby 1 NM or less.
.THU...N winds 5 to 10 kt. Seas 3 to 5 ft. Patchy fog. Rain. Vsby
1 NM or less.
.THU NIGHT...N winds 10 to 15 kt with gusts up to 20 kt,
increasing to 20 to 25 kt with gusts up to 30 kt after midnight.
Seas 5 to 7 ft. Patchy fog. Rain. Vsby 1 NM or less, increasing
to 1 to 3 NM after midnight.
.FRI...NW winds 25 to 30 kt. Seas 5 to 8 ft. Rain likely, mainly
in the morning. Patchy fog in the morning with vsby 1 to 3 NM.
.FRI NIGHT...NW winds 25 to 30 kt with gusts up to 35 kt. Seas
5 to 8 ft. A chance of rain in the evening.
.SAT...W winds 25 to 30 kt with gusts up to 35 kt. Seas 5 to
8 ft.
.SAT NIGHT...W winds 20 to 25 kt, becoming NW 10 to 15 kt after
midnight. Gusts up to 30 kt. Seas 4 to 6 ft.
.SUN THROUGH MON...NW winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 4 ft.
.MON NIGHT...E winds 10 to 15 kt. Seas 2 to 3 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.

$$

ANZ256-281200-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
701 PM EDT Wed Mar 27 2024

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

.TONIGHT...N winds around 5 kt. Seas 3 to 5 ft. Patchy fog. A
slight chance of rain with patchy drizzle this evening. Rain
likely after midnight. Vsby 1 NM or less.
.THU...N winds 5 to 10 kt. Seas 4 to 5 ft. Patchy fog. Rain. Vsby
1 NM or less.
.THU NIGHT...N winds 10 to 15 kt, increasing to 20 to 25 kt with
gusts up to 30 kt after midnight. Seas 4 to 6 ft. Patchy fog.
Rain. Vsby 1 NM or less, increasing to 1 to 3 NM after midnight.
.FRI...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to
7 ft. Rain likely, mainly in the morning. Patchy fog in the
morning with vsby 1 to 3 NM.
.FRI NIGHT AND SAT...W winds 25 to 30 kt with gusts up to 35 kt.
Seas 5 to 7 ft.
.SAT NIGHT...W winds 20 to 25 kt, becoming NW 10 to 15 kt after
midnight. Gusts up to 30 kt. Seas 3 to 5 ft.
.SUN THROUGH MON...NW winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 4 ft.
.MON NIGHT...SE winds 10 to 15 kt. Seas 2 to 3 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.

$$

ANZ232-281200-
Nantucket Sound-
701 PM EDT Wed Mar 27 2024

.TONIGHT...NE winds around 5 kt. Seas 2 to 3 ft. Patchy fog. A
slight chance of rain with patchy drizzle this evening, then a
chance of rain after midnight. Vsby 1 to 3 NM, decreasing to 1 NM
or less after midnight.
.THU...N winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. Rain. Vsby
1 NM or less.
.THU NIGHT...N winds 5 to 10 kt, increasing to 15 to 20 kt with
gusts up to 25 kt after midnight. Seas 2 to 4 ft. Patchy fog.
Rain. Vsby 1 NM or less, increasing to 1 to 3 NM after midnight.
.FRI...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to
5 ft. Rain likely, mainly in the morning. Patchy fog in the
morning with vsby 1 to 3 NM.
.FRI NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt. Seas
3 to 5 ft. A chance of rain in the evening.
.SAT AND SAT NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt.
Seas 2 to 4 ft.
.SUN THROUGH MON...N winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft.
.MON NIGHT...SE winds 5 to 10 kt. Seas 1 foot or less. 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.

$$

ANZ233-281200-
Vineyard Sound-
701 PM EDT Wed Mar 27 2024

.TONIGHT...N winds around 5 kt. Seas around 2 ft. Patchy fog. A
slight chance of rain with patchy drizzle this evening, then rain
likely after midnight. Vsby 1 to 3 NM, decreasing to 1 NM or less
after midnight.
.THU...N winds around 5 kt. Seas around 2 ft. Patchy fog. Rain.
Vsby 1 NM or less.
.THU NIGHT...N winds 5 to 10 kt, increasing to 15 to 20 kt with
gusts up to 25 kt after midnight. Seas 2 to 3 ft. Patchy fog.
Rain. Vsby 1 NM or less, increasing to 1 to 3 NM after midnight.
.FRI...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to
4 ft. Rain likely, mainly in the morning. Patchy fog in the
morning with vsby 1 to 3 NM.
.FRI NIGHT THROUGH SAT NIGHT...NW winds 25 to 30 kt. Seas 2 to
4 ft.
.SUN THROUGH MON...NW winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft.
.MON NIGHT...SE winds around 10 kt. Seas 1 foot or less. 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.

$$

ANZ234-281200-
Buzzards Bay-
701 PM EDT Wed Mar 27 2024

.TONIGHT...SE winds around 5 kt, becoming N after midnight. Seas
around 2 ft. Patchy fog. A slight chance of rain with patchy
drizzle this evening, then a chance of rain after midnight. Vsby
1 to 3 NM, decreasing to 1 NM or less after midnight.
.THU...N winds around 5 kt. Seas around 2 ft. Patchy fog. Rain.
Vsby 1 NM or less.
.THU NIGHT...N winds 5 to 10 kt, increasing to 15 to 20 kt with
gusts up to 25 kt after midnight. Seas around 2 ft. Patchy fog.
Rain. Vsby 1 NM or less, increasing to 1 to 3 NM after midnight.
.FRI...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 2 to
3 ft. Rain likely, mainly in the morning. Patchy fog in the
morning with vsby 1 to 3 NM.
.FRI NIGHT THROUGH SAT NIGHT...NW winds 20 to 25 kt with gusts up
to 30 kt. Seas 2 to 4 ft.
.SUN THROUGH MON...NW winds around 10 kt with gusts up to 20 kt.
Seas around 2 ft.
.MON NIGHT...SE winds 5 to 10 kt. Seas 1 foot or less. 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.

$$

ANZ235-281200-
Rhode Island Sound-
701 PM EDT Wed Mar 27 2024

.TONIGHT...W winds around 5 kt, becoming N after midnight. Seas
2 to 3 ft. Patchy fog. A chance of rain with patchy drizzle this
evening, then rain likely after midnight. Vsby 1 to 3 NM,
decreasing to 1 NM or less after midnight.
.THU...N winds around 5 kt. Seas 2 to 3 ft. Patchy fog. Rain.
Vsby 1 NM or less.
.THU NIGHT...N winds 10 to 15 kt, increasing to 15 to 20 kt with
gusts up to 25 kt after midnight. Seas 2 to 4 ft. Patchy fog.
Rain. Vsby 1 NM or less, increasing to 1 to 3 NM after midnight.
.FRI...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to
5 ft. Rain likely, mainly in the morning. Patchy fog in the
morning with vsby 1 to 3 NM.
.FRI NIGHT AND SAT...W winds 25 to 30 kt. Seas 3 to 5 ft.
.SAT NIGHT...W winds 15 to 20 kt, becoming NW 10 to 15 kt after
midnight. Gusts up to 25 kt. Seas 2 to 4 ft.
.SUN THROUGH MON...W winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft.
.MON NIGHT...SE winds around 10 kt. Seas around 2 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.

$$

ANZ237-281200-
Block Island Sound-
701 PM EDT Wed Mar 27 2024

.TONIGHT...W winds around 5 kt, becoming NW after midnight. Seas
2 to 3 ft. Patchy fog. A chance of rain with patchy drizzle this
evening, then rain likely after midnight. Vsby 1 to 3 NM,
decreasing to 1 NM or less after midnight.
.THU...NW winds around 5 kt. Seas 2 to 3 ft. Patchy fog. Rain.
Vsby 1 NM or less.
.THU NIGHT...N winds 5 to 10 kt, increasing to 10 to 15 kt with
gusts up to 20 kt after midnight. Seas 2 to 4 ft. Patchy fog.
Rain. Vsby 1 NM or less, increasing to 1 to 3 NM after midnight.
.FRI...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
4 ft. A chance of rain. Patchy fog in the morning.
.FRI NIGHT AND SAT...W winds 15 to 20 kt with gusts up to 30 kt.
Seas 3 to 5 ft.
.SAT NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas
2 to 3 ft.
.SUN THROUGH MON...W winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft.
.MON NIGHT...SE winds around 10 kt. Seas around 2 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.

$$

ANZ230-281200-
Boston Harbor-
701 PM EDT Wed Mar 27 2024

.TONIGHT...E winds around 5 kt. Waves 1 foot or less. A chance of
rain with patchy drizzle this evening, then rain after midnight.
Patchy fog after midnight with vsby 1 to 3 NM.
.THU...N winds around 5 kt. Waves 1 foot or less. Patchy fog.
Rain. Vsby 1 NM or less.
.THU NIGHT...N winds 5 to 10 kt, becoming NW 15 to 20 kt with
gusts up to 25 kt after midnight. Waves 1 foot or less, then
around 2 ft after midnight. Patchy fog. Rain. Vsby 1 NM or less,
increasing to 1 to 3 NM after midnight.
.FRI...NW winds 20 to 25 kt with gusts up to 30 kt. Waves around
2 ft. Rain likely, mainly in the morning. Patchy fog in the
morning.
.FRI NIGHT THROUGH SAT NIGHT...NW winds 25 to 30 kt. Waves around
2 ft, except 3 to 5 ft at the outer harbor entrance.
.SUN THROUGH MON...N winds 10 to 15 kt with gusts up to 20 kt.
Waves around 2 ft.
.MON NIGHT...SE winds 5 to 10 kt. Waves 1 foot or less. 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.

$$

ANZ236-281200-
Narragansett Bay-
701 PM EDT Wed Mar 27 2024

.TONIGHT...SW winds around 5 kt. Waves around 2 ft. Patchy fog. A
chance of rain with patchy drizzle this evening, then rain likely
after midnight with vsby 1 NM or less.
.THU...N winds around 5 kt. Waves around 2 ft. Patchy fog. Rain.
Vsby 1 NM or less.
.THU NIGHT...N winds 5 to 10 kt, increasing to 10 to 15 kt with
gusts up to 20 kt after midnight. Waves 2 to 3 ft. Patchy fog.
Rain. Vsby 1 NM or less, increasing to 1 to 3 NM after midnight.
.FRI...NW winds 15 to 20 kt with gusts up to 25 kt. Waves 2 to
3 ft. A chance of rain. Patchy fog in the morning.
.FRI NIGHT THROUGH SAT NIGHT...NW winds 15 to 20 kt with gusts up
to 25 kt. Waves 2 to 3 ft.
.SUN THROUGH MON...NW winds 10 to 15 kt with gusts up to 20 kt.
Waves 2 to 3 ft.
.MON NIGHT...SE winds 5 to 10 kt. Waves around 2 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.

$$

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