Coastal Waters Forecast
Issued by NWS Boston, MA

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000
FZUS51 KBOX 242304
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
703 PM EDT Wed Apr 24 2024

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

ANZ200-251200-
703 PM EDT Wed Apr 24 2024

.Synopsis for Massachusetts and Rhode Island coastal waters...
Cold front sweeps across the waters this evening, bringing scattered
showers and perhaps a thunderstorm or two. Winds will shift from the
SW to the W, and eventually turning N. N-NW winds will gust up to 30
kt into Thursday morning. High pres again builds over the waters
into this weekend with relatively light winds. Low pres brings rain
chances and breezy winds by Tue.

$$

ANZ250-251200-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
703 PM EDT Wed Apr 24 2024

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

.TONIGHT...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to
6 ft. Wave Detail: E 6 ft at 10 seconds and NW 5 ft at 5 seconds.
A chance of rain this evening.
.THU...N winds 10 to 15 kt with gusts up to 20 kt, becoming SW
5 to 10 kt in the afternoon. Seas 4 to 6 ft. Wave Detail: NE 5 ft
at 8 seconds and NW 4 ft at 5 seconds.
.THU NIGHT...S winds 10 to 15 kt, becoming W 5 to 10 kt after
midnight. Seas 2 to 3 ft. Wave Detail: E 3 ft at 7 seconds and SW
2 ft at 3 seconds.
.FRI...N winds 5 to 10 kt, becoming E in the afternoon. Seas
around 2 ft. Wave Detail: E 2 ft at 9 seconds and NW 1 ft at
3 seconds.
.FRI NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas
around 2 ft. Wave Detail: SW 2 ft at 3 seconds and E 2 ft at
8 seconds.
.SAT...SW winds 5 to 10 kt, becoming S 10 to 15 kt in the
afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds
and E 2 ft at 8 seconds.
.SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. A chance of showers after midnight.
.SUN...SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers.
.SUN NIGHT THROUGH MON NIGHT...S winds 10 to 15 kt. Seas 2 to
3 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.

$$

ANZ251-251200-
Massachusetts Bay and Ipswich Bay-
703 PM EDT Wed Apr 24 2024

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT THURSDAY...

.TONIGHT...NW winds 20 to 25 kt, becoming N 15 to 20 kt after
midnight. Gusts up to 30 kt. Seas 2 to 4 ft. Wave Detail: NW 4 ft
at 4 seconds and E 4 ft at 10 seconds. A chance of rain this
evening.
.THU...N winds 10 to 15 kt, becoming S in the afternoon. Seas
2 to 4 ft. Wave Detail: E 4 ft at 8 seconds and NW 2 ft at
4 seconds.
.THU NIGHT...S winds 10 to 15 kt, becoming W 5 to 10 kt after
midnight. Seas 2 to 3 ft. Wave Detail: E 3 ft at 8 seconds and S
1 ft at 3 seconds.
.FRI...N winds 5 to 10 kt, becoming E 10 to 15 kt in the
afternoon. Seas around 2 ft. Wave Detail: NE 2 ft at 8 seconds
and W 1 ft at 3 seconds.
.FRI NIGHT...S winds 10 to 15 kt, becoming SW after midnight.
Seas around 2 ft. Wave Detail: SE 2 ft at 3 seconds and E 2 ft at
7 seconds.
.SAT...SW winds 5 to 10 kt, becoming SE 10 to 15 kt in the
afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds
and E 1 ft at 8 seconds.
.SAT NIGHT...S winds 15 to 20 kt, becoming SW 10 to 15 kt after
midnight. Seas around 2 ft. A chance of showers after midnight.
.SUN...S winds 10 to 15 kt. Seas around 2 ft. A chance of
showers.
.SUN NIGHT THROUGH MON NIGHT...S winds 5 to 10 kt. Seas 2 to
3 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.

$$

ANZ231-251200-
Cape Cod Bay-
703 PM EDT Wed Apr 24 2024

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT THURSDAY...

.TONIGHT...N winds 20 to 25 kt with gusts up to 30 kt. Seas 2 to
4 ft. Wave Detail: NW 4 ft at 5 seconds and E 3 ft at 9 seconds.
Rain this evening.
.THU...N winds 10 to 15 kt with gusts up to 20 kt, becoming NE
around 5 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: N 3 ft
at 6 seconds.
.THU NIGHT...S winds 5 to 10 kt, becoming W after midnight. Seas
around 2 ft. Wave Detail: N 2 ft at 6 seconds.
.FRI...N winds around 5 kt, becoming NE in the afternoon. Seas
1 foot or less. Wave Detail: N 1 ft at 5 seconds.
.FRI NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas
1 foot or less. Wave Detail: SE 1 ft at 2 seconds and NE 1 ft at
6 seconds.
.SAT AND SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas 1 foot or less. Wave Detail: W 1 ft at 2 seconds and E 1 ft
at 5 seconds.
.SUN THROUGH MON NIGHT...S 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.

$$

ANZ254-251200-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
703 PM EDT Wed Apr 24 2024

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

.TONIGHT...NW winds 20 to 25 kt, becoming N after midnight. Gusts
up to 30 kt. Seas 5 to 7 ft. Wave Detail: E 6 ft at 10 seconds
and NW 5 ft at 6 seconds. A chance of rain this evening.
.THU...N winds 15 to 20 kt, diminishing to 5 to 10 kt in the
afternoon. Seas 5 to 7 ft, subsiding to 3 to 5 ft in the
afternoon. Wave Detail: W 5 ft at 7 seconds and NE 5 ft at
8 seconds, becoming NE 4 ft at 8 seconds and SW 3 ft at
7 seconds.
.THU NIGHT...S winds 5 to 10 kt, becoming W after midnight. Seas
2 to 4 ft. Wave Detail: NE 4 ft at 7 seconds and SW 2 ft at
6 seconds.
.FRI...N winds 5 to 10 kt, becoming NE in the afternoon. Seas
around 2 ft. Wave Detail: E 2 ft at 7 seconds and W 1 ft at
6 seconds.
.FRI NIGHT THROUGH SAT NIGHT...SW winds 10 to 15 kt. Seas 2 to
3 ft. Wave Detail: SW 2 ft at 3 seconds and E 2 ft at 8 seconds.
.SUN THROUGH MON NIGHT...S winds 10 to 15 kt. Seas 2 to 4 ft.
Wave Detail: E 4 ft at 12 seconds and SW 3 ft at 4 seconds.

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.

$$

ANZ255-251200-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
703 PM EDT Wed Apr 24 2024

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

.TONIGHT...W winds 20 to 25 kt, becoming N after midnight. Gusts
up to 30 kt. Seas 4 to 6 ft. Wave Detail: E 5 ft at 10 seconds
and NW 4 ft at 6 seconds. A slight chance of rain this evening.
.THU...NE winds 15 to 20 kt, diminishing to 5 to 10 kt in the
afternoon. Seas 4 to 6 ft. Wave Detail: NE 5 ft at 7 seconds and
SW 3 ft at 6 seconds.
.THU NIGHT...SE winds around 5 kt, becoming NW after midnight.
Seas 2 to 4 ft. Wave Detail: E 3 ft at 8 seconds and S 2 ft at
6 seconds.
.FRI...N winds 5 to 10 kt, becoming E in the afternoon. Seas
around 2 ft. Wave Detail: E 2 ft at 8 seconds and SW 1 ft at
6 seconds.
.FRI NIGHT THROUGH SAT NIGHT...SW winds 10 to 15 kt. Seas 2 to
3 ft. Wave Detail: SW 2 ft at 3 seconds and E 2 ft at 8 seconds.
.SUN THROUGH MON NIGHT...SE winds 10 to 15 kt with gusts up to
20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and E
3 ft at 10 seconds.

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.

$$

ANZ256-251200-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
703 PM EDT Wed Apr 24 2024

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

.TONIGHT...NW winds 15 to 20 kt, becoming N 20 to 25 kt after
midnight. Gusts up to 30 kt. Seas 4 to 5 ft. Wave Detail: E 5 ft
at 10 seconds and W 4 ft at 6 seconds. A slight chance of rain
this evening.
.THU...NE winds 10 to 15 kt with gusts up to 20 kt, becoming E
5 to 10 kt in the afternoon. Seas 3 to 5 ft. Wave Detail: NE 5 ft
at 8 seconds and SW 3 ft at 7 seconds.
.THU NIGHT...S winds 5 to 10 kt, becoming W after midnight. Seas
2 to 3 ft. Wave Detail: E 3 ft at 8 seconds and S 1 ft at
6 seconds.
.FRI...N winds 5 to 10 kt, becoming SE in the afternoon. Seas
around 2 ft. Wave Detail: E 2 ft at 8 seconds and SW 1 ft at
6 seconds.
.FRI NIGHT THROUGH SAT NIGHT...SW winds 10 to 15 kt. Seas 2 to
3 ft. Wave Detail: SW 2 ft at 3 seconds and SE 2 ft at 8 seconds.
.SUN THROUGH MON NIGHT...S winds 10 to 15 kt with gusts up to
20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and E
3 ft at 12 seconds.

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.

$$

ANZ232-251200-
Nantucket Sound-
703 PM EDT Wed Apr 24 2024

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

.TONIGHT...NW winds 20 to 25 kt, becoming N after midnight. Gusts
up to 30 kt. Seas 2 to 4 ft. Wave Detail: NW 3 ft at 4 seconds
and E 3 ft at 10 seconds. A chance of rain this evening.
.THU...N winds 15 to 20 kt, becoming NE 5 to 10 kt in the
afternoon. Seas 2 to 4 ft. Wave Detail: NE 3 ft at 6 seconds and
W 2 ft at 6 seconds.
.THU NIGHT...S winds around 5 kt, becoming W after midnight. Seas
around 2 ft. Wave Detail: SE 2 ft at 7 seconds.
.FRI...N winds 5 to 10 kt, becoming E in the afternoon. Seas
1 foot or less. Wave Detail: SW 1 ft at 5 seconds and E 1 ft at
8 seconds.
.FRI NIGHT THROUGH SAT NIGHT...SW winds 10 to 15 kt. Seas around
2 ft. Wave Detail: SW 2 ft at 3 seconds and E 1 ft at 8 seconds.
.SUN THROUGH MON NIGHT...S winds 10 to 15 kt with gusts up to
20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and E
2 ft at 10 seconds.

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.

$$

ANZ233-251200-
Vineyard Sound-
703 PM EDT Wed Apr 24 2024

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

.TONIGHT...NW winds 15 to 20 kt, becoming N after midnight. Gusts
up to 30 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 6 seconds
and SE 2 ft at 10 seconds. A slight chance of rain this evening.
.THU...NE winds 10 to 15 kt with gusts up to 20 kt, becoming E
5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: NE 2 ft
at 4 seconds and SW 2 ft at 6 seconds.
.THU NIGHT...S winds 5 to 10 kt, becoming W after midnight. Seas
around 2 ft in the evening, then 1 foot or less. Wave Detail: SE
1 ft at 6 seconds, becoming SW 1 ft at 4 seconds and E 1 ft at
8 seconds.
.FRI...N winds around 5 kt, becoming SE in the afternoon. Seas
1 foot or less. Wave Detail: SW 1 ft at 4 seconds and E 1 ft at
8 seconds.
.FRI NIGHT THROUGH SAT NIGHT...SW winds 10 to 15 kt with gusts up
to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and
SE 1 ft at 8 seconds.
.SUN THROUGH MON NIGHT...S winds 10 to 15 kt with gusts up to
20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE
1 ft at 9 seconds.

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.

$$

ANZ234-251200-
Buzzards Bay-
703 PM EDT Wed Apr 24 2024

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

.TONIGHT...NW winds 15 to 20 kt, becoming N after midnight. Gusts
up to 25 kt. Seas 2 to 3 ft. Wave Detail: W 2 ft at 5 seconds and
SE 2 ft at 10 seconds. A slight chance of rain this evening.
.THU...N winds 10 to 15 kt with gusts up to 20 kt, becoming SE
5 to 10 kt in the afternoon. Seas around 2 ft. Wave Detail: NE
2 ft at 3 seconds and SW 1 ft at 6 seconds.
.THU NIGHT...S winds 5 to 10 kt, becoming W after midnight. Seas
around 2 ft in the evening, then 1 foot or less. Wave Detail: S
1 ft at 4 seconds and E 1 ft at 7 seconds, becoming SW 1 ft at
3 seconds and E 1 ft at 8 seconds.
.FRI...N winds around 5 kt, becoming SE in the afternoon. Seas
1 foot or less. Wave Detail: SW 1 ft at 3 seconds and E 1 ft at
8 seconds.
.FRI NIGHT THROUGH SAT NIGHT...SW winds 10 to 15 kt with gusts up
to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and
SE 1 ft at 8 seconds.
.SUN THROUGH MON NIGHT...S winds 10 to 15 kt with gusts up to
20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE
1 ft at 9 seconds.

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.

$$

ANZ235-251200-
Rhode Island Sound-
703 PM EDT Wed Apr 24 2024

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

.TONIGHT...NW winds 15 to 20 kt, becoming N after midnight. Gusts
up to 30 kt. Seas 2 to 3 ft. Wave Detail: NW 3 ft at 7 seconds
and SE 3 ft at 10 seconds. Rain this evening.
.THU...NE winds 10 to 15 kt with gusts up to 20 kt, becoming SE
5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: NE 3 ft
at 7 seconds and SW 2 ft at 7 seconds.
.THU NIGHT...S winds 5 to 10 kt, becoming W after midnight. Seas
around 2 ft. Wave Detail: SE 2 ft at 7 seconds.
.FRI...N winds 5 to 10 kt, becoming SE in the afternoon. Seas
1 foot or less. Wave Detail: SW 1 ft at 5 seconds and SE 1 ft at
8 seconds.
.FRI NIGHT THROUGH SAT NIGHT...SW winds 10 to 15 kt with gusts up
to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and
SE 2 ft at 8 seconds.
.SUN THROUGH MON NIGHT...S winds 10 to 15 kt with gusts up to
20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE
2 ft at 9 seconds.

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.

$$

ANZ237-251200-
Block Island Sound-
703 PM EDT Wed Apr 24 2024

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

.TONIGHT...NW winds 10 to 15 kt, becoming N 15 to 20 kt after
midnight. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft
at 7 seconds and SE 3 ft at 11 seconds. Rain this evening.
.THU...NE winds 10 to 15 kt with gusts up to 20 kt, becoming SE
5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: NE 3 ft
at 8 seconds and S 2 ft at 7 seconds.
.THU NIGHT...S winds 5 to 10 kt, becoming W after midnight. Seas
2 to 3 ft. Wave Detail: SE 2 ft at 7 seconds.
.FRI...NE winds around 5 kt, becoming SE in the afternoon. Seas
1 foot or less. Wave Detail: S 1 ft at 5 seconds and E 1 ft at
8 seconds.
.FRI NIGHT THROUGH SAT NIGHT...SW winds 5 to 10 kt. Seas around
2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 2 ft at 8 seconds.
.SUN THROUGH MON NIGHT...S winds 10 to 15 kt with gusts up to
20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE
2 ft at 8 seconds.

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.

$$

ANZ230-251200-
Boston Harbor-
703 PM EDT Wed Apr 24 2024

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT THURSDAY...

.TONIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Waves
around 2 ft.
.THU...N winds 5 to 10 kt, becoming SE 10 to 15 kt in the
afternoon. Waves around 2 ft.
.THU NIGHT...S winds around 10 kt, becoming W after midnight.
Waves around 2 ft in the evening, then 1 foot or less.
.FRI...N winds 5 to 10 kt, becoming E 10 to 15 kt in the
afternoon. Waves 1 foot or less.
.FRI NIGHT...S winds 10 to 15 kt, becoming SW after midnight.
Waves 1 foot or less.
.SAT...SW winds 5 to 10 kt, becoming SE 10 to 15 kt with gusts up
to 20 kt in the afternoon. Waves 1 foot or less.
.SAT NIGHT...S winds 15 to 20 kt, becoming SW 10 to 15 kt after
midnight. Waves around 2 ft. A chance of showers after midnight.
.SUN...SW winds around 10 kt. Waves 1 foot or less. A chance of
showers.
.SUN NIGHT AND MON...SW winds 5 to 10 kt, becoming NE. Waves
1 foot or less.
.MON NIGHT...S winds 5 to 10 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.

$$

ANZ236-251200-
Narragansett Bay-
703 PM EDT Wed Apr 24 2024

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT THURSDAY...

.TONIGHT...N winds 10 to 15 kt with gusts up to 25 kt. Waves
around 2 ft. A slight chance of rain this evening.
.THU...N winds 10 to 15 kt with gusts up to 20 kt, becoming S
5 to 10 kt in the afternoon. Waves around 2 ft.
.THU NIGHT...S winds 5 to 10 kt, becoming W after midnight. Waves
around 2 ft in the evening, then 1 foot or less.
.FRI...N winds around 5 kt, becoming SE in the afternoon. Waves
1 foot or less.
.FRI NIGHT AND SAT...SW winds 10 to 15 kt with gusts up to 20 kt.
Waves 1 foot or less.
.SAT NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Waves around 2 ft. A chance of showers after midnight.
.SUN...SW winds 10 to 15 kt with gusts up to 20 kt. Waves around
2 ft. A chance of showers.
.SUN NIGHT THROUGH MON NIGHT...S winds 5 to 10 kt. Waves 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.

$$

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