Coastal Waters Forecast
Issued by NWS Boston, MA

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FZUS51 KBOX 152302
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
701 PM EDT Mon Apr 15 2024

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

ANZ200-161200-
701 PM EDT Mon Apr 15 2024

.Synopsis for Massachusetts and Rhode Island coastal waters...
Dry and seasonably mild conditions continue tomorrow and Wednesday
as a surface high builds across the waters. Winds will vary in
direction across the waters but generally from the W/SW gusting to
25kt this afternoon and evening; lighter winds on Tuesday. Weak low
pressure system could bring light could bring more light rain
towards the end of the week.

$$

ANZ250-161200-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
701 PM EDT Mon Apr 15 2024

.TONIGHT...NW winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas 2 to 4 ft. Wave
Detail: SE 4 ft at 9 seconds and S 1 ft at 2 seconds. A slight
chance of rain after midnight.
.TUE...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 9 seconds and W 1 ft at 3 seconds.
.TUE NIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas
2 to 3 ft. Wave Detail: SE 3 ft at 9 seconds and W 1 ft at
3 seconds.
.WED...N winds 5 to 10 kt, becoming E in the afternoon. Seas 2 to
3 ft. Wave Detail: SE 3 ft at 9 seconds and NW 1 ft at 3 seconds.
.WED NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
2 ft at 8 seconds and SE 1 ft at 3 seconds.
.THU AND THU NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: E 3 ft at 9 seconds and SE 1 ft at 4 seconds.
.FRI...SE winds around 10 kt. Seas 2 to 3 ft.
.FRI NIGHT THROUGH SAT NIGHT...W winds 10 to 15 kt with gusts up
to 20 kt. Seas 2 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.

$$

ANZ251-161200-
Massachusetts Bay and Ipswich Bay-
701 PM EDT Mon Apr 15 2024

.TONIGHT...NW winds 5 to 10 kt. Gusts up to 25 kt this evening.
Seas 2 to 3 ft. Wave Detail: E 3 ft at 9 seconds and S 1 ft at
4 seconds.
.TUE...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft
at 9 seconds and W 1 ft at 2 seconds.
.TUE NIGHT...NW winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
E 2 ft at 9 seconds and NW 1 ft at 2 seconds.
.WED...N winds 5 to 10 kt, becoming E 10 to 15 kt in the
afternoon. Seas around 2 ft. Wave Detail: E 2 ft at 9 seconds and
N 1 ft at 3 seconds.
.WED NIGHT...S winds 10 to 15 kt, becoming SE 5 to 10 kt after
midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 3 seconds and
E 2 ft at 7 seconds.
.THU AND THU NIGHT...SE winds 10 to 15 kt. Seas around 2 ft. Wave
Detail: E 2 ft at 6 seconds and SE 1 ft at 3 seconds.
.FRI...SE winds 5 to 10 kt. Seas around 2 ft.
.FRI NIGHT AND SAT...S winds around 10 kt, becoming W. Seas 2 to
3 ft. A chance of showers.
.SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 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.

$$

ANZ231-161200-
Cape Cod Bay-
701 PM EDT Mon Apr 15 2024

.TONIGHT...NW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE
2 ft at 9 seconds and SW 1 ft at 2 seconds. A chance of rain.
.TUE...NW winds 5 to 10 kt, becoming W in the afternoon. Seas
around 2 ft in the morning, then 1 foot or less. Wave Detail: SE
2 ft at 9 seconds and NW 1 ft at 2 seconds, becoming NW 1 ft at
3 seconds and SE 1 ft at 9 seconds.
.TUE NIGHT...SW winds around 5 kt, becoming N around 5 kt after
midnight. Seas 1 foot or less, then around 2 ft after midnight.
Wave Detail: NW 1 ft at 3 seconds and SE 1 ft at 9 seconds,
becoming SE 2 ft at 9 seconds and NW 1 ft at 3 seconds.
.WED...N winds around 5 kt, becoming E in the afternoon. Seas
1 foot or less. Wave Detail: N 1 ft at 3 seconds and E 1 ft at
8 seconds.
.WED NIGHT...SE winds 5 to 10 kt, diminishing to around 5 kt
after midnight. Seas 1 foot or less. Wave Detail: SE 1 ft at
3 seconds and E 1 ft at 6 seconds.
.THU...E winds 5 to 10 kt. Seas 1 foot or less, then around 2 ft
in the afternoon. Wave Detail: E 1 ft at 4 seconds, becoming SE
1 ft at 4 seconds.
.THU NIGHT...E winds around 10 kt. Seas around 2 ft. A chance of
showers.
.FRI...E winds 5 to 10 kt. Seas around 2 ft.
.FRI NIGHT THROUGH SAT NIGHT...W winds 10 to 15 kt with gusts up
to 20 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.

$$

ANZ254-161200-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
701 PM EDT Mon Apr 15 2024

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT TUESDAY...

.TONIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming
NW 5 to 10 kt after midnight. Seas 3 to 5 ft. Wave Detail: SE
4 ft at 9 seconds and SW 2 ft at 6 seconds. A chance of rain.
Vsby 1 to 3 NM this evening.
.TUE...W winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: S 4 ft at
9 seconds and W 1 ft at 3 seconds.
.TUE NIGHT...SW winds 5 to 10 kt, becoming N after midnight. Seas
3 to 4 ft. Wave Detail: SE 4 ft at 9 seconds and W 2 ft at
6 seconds.
.WED...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 8 seconds and W 2 ft at 6 seconds.
.WED NIGHT THROUGH THU NIGHT...E winds 5 to 10 kt with gusts up
to 20 kt. Seas 2 to 4 ft. Wave Detail: E 3 ft at 9 seconds and S
2 ft at 6 seconds.
.FRI...E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
4 ft. Wave Detail: SE 4 ft at 7 seconds.
.FRI NIGHT THROUGH SAT NIGHT...W 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.

$$

ANZ255-161200-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
701 PM EDT Mon Apr 15 2024

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT TUESDAY...

.TONIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming
NW 5 to 10 kt after midnight. Seas 3 to 5 ft. Wave Detail: S 5 ft
at 8 seconds and SE 5 ft at 9 seconds. A chance of rain.
.TUE...W winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: S 4 ft at
8 seconds.
.TUE NIGHT...SW winds 5 to 10 kt, becoming N after midnight. Seas
2 to 4 ft. Wave Detail: S 4 ft at 8 seconds.
.WED...NE winds around 10 kt, becoming E in the afternoon. Seas
2 to 4 ft. Wave Detail: S 3 ft at 7 seconds and SE 3 ft at
8 seconds.
.WED NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
S 2 ft at 7 seconds and SE 2 ft at 8 seconds.
.THU AND THU NIGHT...E winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 4 ft. Wave Detail: SE 4 ft at 6 seconds. A chance of
showers.
.FRI...E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
4 ft.
.FRI NIGHT THROUGH SAT NIGHT...W 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.

$$

ANZ256-161200-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
701 PM EDT Mon Apr 15 2024

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT TUESDAY...

.TONIGHT...W winds 5 to 10 kt with gusts up to 20 kt, becoming NW
after midnight. Seas 3 to 5 ft. Wave Detail: S 5 ft at 8 seconds
and S 1 ft at 5 seconds. A slight chance of rain.
.TUE...NW winds 5 to 10 kt, becoming W in the afternoon. Seas
3 to 4 ft. Wave Detail: S 4 ft at 8 seconds.
.TUE NIGHT...W winds around 10 kt, becoming NW after midnight.
Seas 3 to 4 ft. Wave Detail: S 4 ft at 8 seconds.
.WED...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas
2 to 3 ft. Wave Detail: S 3 ft at 7 seconds and SE 3 ft at
8 seconds.
.WED NIGHT...SE winds around 10 kt. Seas 2 to 3 ft. Wave Detail:
SE 3 ft at 8 seconds and S 2 ft at 7 seconds. A chance of
showers.
.THU AND THU NIGHT...E winds 10 to 15 kt with gusts up to 25 kt.
Seas 3 to 5 ft. Wave Detail: SE 5 ft at 7 seconds. A chance of
showers.
.FRI...E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft.
.FRI NIGHT THROUGH SAT NIGHT...W 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.

$$

ANZ232-161200-
Nantucket Sound-
701 PM EDT Mon Apr 15 2024

.TONIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW
2 ft at 6 seconds and SE 2 ft at 9 seconds. A chance of rain.
.TUE...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas
around 2 ft. Wave Detail: SE 2 ft at 9 seconds and W 1 ft at
4 seconds.
.TUE NIGHT...SW winds around 5 kt, becoming N after midnight.
Seas around 2 ft. Wave Detail: SW 1 ft at 6 seconds and SE 1 ft
at 9 seconds.
.WED...N winds 5 to 10 kt, becoming E in the afternoon. Seas
around 2 ft in the morning, then 1 foot or less. Wave Detail: SW
1 ft at 6 seconds and NE 1 ft at 8 seconds, becoming NE 1 ft at
5 seconds and S 1 ft at 6 seconds.
.WED NIGHT AND THU...E winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft. Wave Detail: SE 2 ft at 6 seconds.
.THU NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas
around 2 ft. Wave Detail: SE 2 ft at 5 seconds. A chance of
showers.
.FRI...E winds around 10 kt with gusts up to 20 kt. Seas around
2 ft.
.FRI NIGHT THROUGH SAT NIGHT...W winds 10 to 15 kt with gusts up
to 20 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.

$$

ANZ233-161200-
Vineyard Sound-
701 PM EDT Mon Apr 15 2024

.TONIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S
3 ft at 8 seconds and SW 2 ft at 7 seconds. A chance of rain this
evening. A slight chance of rain after midnight.
.TUE...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas
around 2 ft. Wave Detail: S 2 ft at 7 seconds.
.TUE NIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas
around 2 ft. Wave Detail: S 2 ft at 7 seconds.
.WED...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas
around 2 ft in the morning, then 1 foot or less. Wave Detail: SW
2 ft at 7 seconds and E 2 ft at 8 seconds, becoming SE 1 ft at
6 seconds.
.WED NIGHT...SE winds 5 to 10 kt. Seas 1 foot or less. Wave
Detail: SE 1 ft at 4 seconds and SE 1 ft at 7 seconds.
.THU AND THU NIGHT...E winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft. Wave Detail: SE 2 ft at 5 seconds. A chance of
showers.
.FRI THROUGH SAT NIGHT...W winds 10 to 15 kt with gusts up to
20 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.

$$

ANZ234-161200-
Buzzards Bay-
701 PM EDT Mon Apr 15 2024

.TONIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S
3 ft at 8 seconds and SW 2 ft at 7 seconds. A chance of rain this
evening. A slight chance of rain after midnight.
.TUE...NW winds around 5 kt, becoming SW in the afternoon. Seas
around 2 ft. Wave Detail: S 2 ft at 9 seconds and SW 1 ft at
7 seconds.
.TUE NIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas
around 2 ft. Wave Detail: S 2 ft at 7 seconds.
.WED...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas
1 foot or less. Wave Detail: SW 1 ft at 7 seconds and E 1 ft at
7 seconds.
.WED NIGHT...SE winds 5 to 10 kt. Seas 1 foot or less. Wave
Detail: SE 1 ft at 4 seconds and SE 1 ft at 7 seconds.
.THU AND THU NIGHT...E winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft. Wave Detail: SE 1 ft at 5 seconds. A chance of
showers.
.FRI...E winds around 10 kt. Seas around 2 ft.
.FRI NIGHT THROUGH SAT NIGHT...W winds around 10 kt with gusts up
to 20 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.

$$

ANZ235-161200-
Rhode Island Sound-
701 PM EDT Mon Apr 15 2024

.TONIGHT...NW winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: S
4 ft at 8 seconds. A slight chance of rain.
.TUE...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas
2 to 3 ft. Wave Detail: S 3 ft at 7 seconds.
.TUE NIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas
2 to 3 ft. Wave Detail: S 3 ft at 8 seconds.
.WED...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas
2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and S 2 ft at
7 seconds.
.WED NIGHT THROUGH THU NIGHT...E winds 10 to 15 kt with gusts up
to 20 kt. Seas 2 to 4 ft. Wave Detail: SE 4 ft at 6 seconds. A
chance of showers.
.FRI THROUGH SAT NIGHT...W winds 10 to 15 kt with gusts up to
20 kt. Seas 2 to 4 ft. Wave Detail: S 4 ft at 6 seconds. 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.

$$

ANZ237-161200-
Block Island Sound-
701 PM EDT Mon Apr 15 2024

.TONIGHT...NW winds 5 to 10 kt. Gusts up to 20 kt this evening.
Seas 2 to 4 ft. Wave Detail: S 4 ft at 7 seconds.
.TUE...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at
7 seconds.
.TUE NIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas
2 to 3 ft. Wave Detail: S 3 ft at 8 seconds and SW 2 ft at
8 seconds.
.WED...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas
around 2 ft. Wave Detail: S 2 ft at 7 seconds and SE 2 ft at
8 seconds.
.WED NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
S 2 ft at 7 seconds and SE 2 ft at 8 seconds. A chance of
showers.
.THU AND THU NIGHT...E winds 10 to 15 kt with gusts up to 25 kt.
Seas 2 to 4 ft. Wave Detail: SE 4 ft at 6 seconds. A chance of
showers.
.FRI...E winds around 10 kt. Seas 2 to 4 ft.
.FRI NIGHT THROUGH SAT NIGHT...NW 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.

$$

ANZ230-161200-
Boston Harbor-
701 PM EDT Mon Apr 15 2024

.TONIGHT...NW winds 5 to 10 kt. Gusts up to 25 kt this evening.
Waves around 2 ft.
.TUE...W winds 5 to 10 kt. Waves around 2 ft.
.TUE NIGHT...N winds around 5 kt. Waves around 2 ft.
.WED...N winds 5 to 10 kt, becoming E 10 to 15 kt in the
afternoon. Waves around 2 ft.
.WED NIGHT...SE winds 10 to 15 kt, diminishing to 5 to 10 kt
after midnight. Waves around 2 ft in the evening, then 1 foot or
less.
.THU...E winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Waves around 2 ft.
.THU NIGHT...E winds 10 to 15 kt, becoming SE around 5 kt after
midnight. Waves around 2 ft in the evening, then 1 foot or less.
A chance of showers.
.FRI...SE winds 5 to 10 kt. Waves around 2 ft.
.FRI NIGHT THROUGH SAT NIGHT...W winds around 10 kt with gusts up
to 20 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.

$$

ANZ236-161200-
Narragansett Bay-
701 PM EDT Mon Apr 15 2024

.TONIGHT...NW winds 5 to 10 kt. Gusts up to 20 kt this evening.
Waves 2 to 3 ft. A slight chance of rain this evening.
.TUE...NW winds 5 to 10 kt. Waves 2 to 3 ft.
.TUE NIGHT...NW winds around 5 kt, becoming N after midnight.
Waves around 2 ft.
.WED...N winds 5 to 10 kt, becoming SE 10 to 15 kt in the
afternoon. Waves around 2 ft.
.WED NIGHT THROUGH THU NIGHT...NE winds 10 to 15 kt with gusts up
to 20 kt. Waves 2 to 3 ft. A chance of showers.
.FRI...E winds 5 to 10 kt. Waves 2 to 3 ft.
.FRI NIGHT THROUGH SAT NIGHT...W winds around 10 kt with gusts up
to 20 kt. Waves 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.

$$

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