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000
FZUS51 KBOX 231705
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
104 PM EDT Tue Apr 23 2024

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

ANZ200-240600-
104 PM EDT Tue Apr 23 2024

.Synopsis for Massachusetts and Rhode Island coastal waters...
High pres continues to dominate weather conditions through today. A
cold front will cross the region on Wed, bringing a round of showers
and thunderstorms. High pres builds back in Thu, and remains in
place through Sat.

$$

ANZ250-240600-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
104 PM EDT Tue Apr 23 2024

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

$$

ANZ251-240600-
Massachusetts Bay and Ipswich Bay-
104 PM EDT Tue Apr 23 2024

.THIS AFTERNOON...SE winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 3 ft. Wave Detail: SE 2 ft at 4 seconds and E 1 ft at
10 seconds.
.TONIGHT...S winds 15 to 20 kt, diminishing to around 10 kt after
midnight. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 4 seconds and E 1 ft at 10 seconds.
.WED...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Wave Detail: E 4 ft at 9 seconds and SE 2 ft at 4 seconds.
Showers likely in the afternoon.
.WED NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt. Seas
3 to 5 ft. Wave Detail: NW 4 ft at 5 seconds and E 4 ft at
9 seconds.
.THU...N winds 15 to 20 kt, becoming E 5 to 10 kt in the
afternoon. Seas 2 to 4 ft. Wave Detail: N 4 ft at 6 seconds and E
3 ft at 9 seconds.
.THU NIGHT...S winds around 10 kt, becoming SW after midnight.
Seas around 2 ft. Wave Detail: NE 2 ft at 7 seconds and S 1 ft at
3 seconds.
.FRI THROUGH SAT...S winds 10 to 15 kt with gusts up to 25 kt.
Seas around 2 ft.
.SAT NIGHT...S winds around 15 kt with gusts up to 25 kt. Seas
2 to 3 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.

$$

ANZ231-240600-
Cape Cod Bay-
104 PM EDT Tue Apr 23 2024

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

$$

ANZ254-240600-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
104 PM EDT Tue Apr 23 2024

.THIS AFTERNOON...SE winds around 10 kt. Seas around 2 ft. Wave
Detail: E 2 ft at 4 seconds and SE 2 ft at 9 seconds.
.TONIGHT...SE winds 5 to 10 kt, becoming SW after midnight. Seas
2 to 4 ft. Wave Detail: E 4 ft at 10 seconds and E 2 ft at
3 seconds.
.WED...S winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
6 ft. Wave Detail: E 6 ft at 10 seconds and SW 2 ft at 4 seconds.
A chance of showers in the afternoon.
.WED NIGHT...NW winds 15 to 20 kt, becoming N after midnight.
Gusts up to 25 kt. Seas 5 to 7 ft. Wave Detail: N 5 ft at
6 seconds and E 5 ft at 9 seconds.
.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: NW 4 ft at 7 seconds and E 3 ft at
9 seconds, becoming N 4 ft at 7 seconds and E 3 ft at 8 seconds.
.THU NIGHT...SE winds around 5 kt, becoming W after midnight.
Seas 2 to 4 ft. Wave Detail: N 3 ft at 7 seconds and SW 2 ft at
7 seconds.
.FRI THROUGH SAT...S winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft.
.SAT NIGHT...S winds 10 to 15 kt with gusts up to 25 kt. Seas
2 to 3 ft. Patchy fog. 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.

$$

ANZ255-240600-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
104 PM EDT Tue Apr 23 2024

.THIS AFTERNOON...E winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: SE 2 ft at 9 seconds and E 1 ft at 3 seconds.
.TONIGHT...SE winds 5 to 10 kt, becoming SW after midnight. Seas
2 to 4 ft. Wave Detail: SE 4 ft at 10 seconds and E 1 ft at
3 seconds.
.WED...SW winds 15 to 20 kt. Seas 4 to 6 ft. Wave Detail: SE 5 ft
at 10 seconds and SW 4 ft at 5 seconds. A chance of showers in
the afternoon.
.WED NIGHT...NW winds 20 to 25 kt, becoming N after midnight.
Gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: SW 5 ft at
7 seconds and E 4 ft at 9 seconds.
.THU...N winds 15 to 20 kt with gusts up to 25 kt, becoming NE
10 to 15 kt in the afternoon. Seas 4 to 6 ft, subsiding to 2 to
4 ft in the afternoon. Wave Detail: SW 4 ft at 7 seconds and N
3 ft at 5 seconds, becoming SW 3 ft at 7 seconds and NE 2 ft at
4 seconds.
.THU NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW
2 ft at 7 seconds and E 2 ft at 8 seconds.
.FRI THROUGH SAT...S winds 10 to 15 kt. Seas around 2 ft.
.SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. Patchy fog. 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.

$$

ANZ256-240600-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
104 PM EDT Tue Apr 23 2024

.THIS AFTERNOON...SE winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: SE 2 ft at 9 seconds and SE 1 ft at 3 seconds.
.TONIGHT...S winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: SE
4 ft at 9 seconds and SE 1 ft at 3 seconds.
.WED...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
6 ft. Wave Detail: SE 5 ft at 11 seconds and SW 4 ft at
6 seconds. A chance of showers in the afternoon.
.WED NIGHT...NW winds 20 to 25 kt, becoming N after midnight.
Seas 4 to 6 ft. Wave Detail: N 5 ft at 5 seconds and E 4 ft at
9 seconds.
.THU...N winds 15 to 20 kt, becoming E 5 to 10 kt in the
afternoon. Seas 3 to 5 ft. Wave Detail: SW 4 ft at 7 seconds and
NE 3 ft at 4 seconds.
.THU NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S
2 ft at 7 seconds and E 2 ft at 8 seconds.
.FRI THROUGH SAT...S winds 10 to 15 kt. Seas around 2 ft.
.SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. Patchy fog. 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.

$$

ANZ232-240600-
Nantucket Sound-
104 PM EDT Tue Apr 23 2024

.THIS AFTERNOON...SE winds around 10 kt. Seas 1 foot or less.
Wave Detail: SE 1 ft at 3 seconds and SE 1 ft at 9 seconds.
.TONIGHT...SE winds 5 to 10 kt, becoming SW after midnight. Seas
around 2 ft. Wave Detail: SE 1 ft at 3 seconds and SE 1 ft at
9 seconds.
.WED...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Wave Detail: S 2 ft at 3 seconds and SE 2 ft at 10 seconds.
A chance of showers in the afternoon.
.WED NIGHT...NW winds 15 to 20 kt, becoming N 20 to 25 kt after
midnight. Seas 2 to 4 ft. Wave Detail: W 3 ft at 4 seconds and N
2 ft at 5 seconds.
.THU...N winds 15 to 20 kt, becoming NE 5 to 10 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: N 3 ft at 5 seconds and E
2 ft at 9 seconds.
.THU NIGHT...SE winds 5 to 10 kt, becoming W after midnight. Seas
1 foot or less. Wave Detail: NE 1 ft at 3 seconds and SW 1 ft at
6 seconds.
.FRI THROUGH SAT...S winds 10 to 15 kt. Seas 1 foot or less.
.SAT NIGHT...S winds 10 to 15 kt with gusts up to 25 kt. Seas
around 2 ft. Patchy fog. 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.

$$

ANZ233-240600-
Vineyard Sound-
104 PM EDT Tue Apr 23 2024

.THIS AFTERNOON...SE winds around 10 kt. Seas 1 foot or less.
Wave Detail: SE 1 ft at 3 seconds and S 1 ft at 9 seconds.
.TONIGHT...S winds 5 to 10 kt. Seas 1 foot or less, then around
2 ft after midnight. Wave Detail: SE 1 ft at 3 seconds and S 1 ft
at 9 seconds, becoming E 1 ft at 3 seconds and SW 1 ft at
3 seconds.
.WED...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: SW 3 ft at 5 seconds and SE 2 ft at
11 seconds. A chance of showers in the afternoon.
.WED NIGHT...NW winds 20 to 25 kt. Seas 2 to 3 ft. Wave Detail: W
3 ft at 6 seconds and N 2 ft at 5 seconds.
.THU...N winds 15 to 20 kt, becoming E 5 to 10 kt in the
afternoon. Seas around 2 ft in the morning, then 1 foot or less.
Wave Detail: N 2 ft at 4 seconds and W 2 ft at 6 seconds,
becoming NE 1 ft at 3 seconds and SW 1 ft at 7 seconds.
.THU NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas
1 foot or less. Wave Detail: E 1 ft at 3 seconds and S 1 ft at
5 seconds.
.FRI THROUGH SAT...S winds 10 to 15 kt. Seas 1 foot or less.
.SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas
around 2 ft. Patchy fog. 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.

$$

ANZ234-240600-
Buzzards Bay-
104 PM EDT Tue Apr 23 2024

.THIS AFTERNOON...S winds around 10 kt. Seas 1 foot or less. Wave
Detail: SE 1 ft at 3 seconds and S 1 ft at 9 seconds.
.TONIGHT...S winds 5 to 10 kt. Seas 1 foot or less, then around
2 ft after midnight. Wave Detail: SE 1 ft at 3 seconds and S 1 ft
at 9 seconds, becoming E 1 ft at 3 seconds and SW 1 ft at
3 seconds.
.WED...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at
10 seconds. A chance of showers in the afternoon.
.WED NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas
2 to 3 ft. Wave Detail: W 3 ft at 6 seconds and N 2 ft at
5 seconds.
.THU...N winds 10 to 15 kt with gusts up to 20 kt, becoming E in
the afternoon. Seas around 2 ft in the morning, then 1 foot or
less. Wave Detail: N 2 ft at 3 seconds and W 2 ft at 7 seconds,
becoming NE 1 ft at 3 seconds and SW 1 ft at 7 seconds.
.THU NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas
1 foot or less. Wave Detail: NE 1 ft at 3 seconds and S 1 ft at
5 seconds.
.FRI THROUGH SAT...S winds 5 to 10 kt with gusts up to 20 kt.
Seas 1 foot or less.
.SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas
around 2 ft. Patchy fog. 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.

$$

ANZ235-240600-
Rhode Island Sound-
104 PM EDT Tue Apr 23 2024

.THIS AFTERNOON...S winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: S 2 ft at 9 seconds and SE 1 ft at 3 seconds.
.TONIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
2 ft at 9 seconds and S 1 ft at 3 seconds.
.WED...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. Wave Detail: SE 4 ft at 11 seconds and S 3 ft at 4 seconds.
A chance of showers in the afternoon.
.WED NIGHT...NW winds 20 to 25 kt, becoming N 15 to 20 kt after
midnight. Seas 3 to 5 ft. Wave Detail: W 4 ft at 6 seconds and SE
4 ft at 10 seconds.
.THU...N winds 15 to 20 kt, becoming SE 5 to 10 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: N 3 ft at 4 seconds and
SW 3 ft at 7 seconds.
.THU NIGHT...S winds around 10 kt, becoming SW after midnight.
Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and E 1 ft at
3 seconds.
.FRI THROUGH SAT...S winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft.
.SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. Patchy fog. 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.

$$

ANZ237-240600-
Block Island Sound-
104 PM EDT Tue Apr 23 2024

.THIS AFTERNOON...S winds around 10 kt. Seas around 2 ft. Wave
Detail: S 2 ft at 9 seconds and SE 1 ft at 3 seconds.
.TONIGHT...S winds around 10 kt. Seas around 2 ft. Wave Detail:
SE 2 ft at 9 seconds and SE 1 ft at 3 seconds.
.WED...SW winds 10 to 15 kt. Gusts up to 20 kt in the morning.
Seas 2 to 4 ft. Wave Detail: SE 4 ft at 11 seconds and SW 3 ft at
5 seconds. A chance of showers in the afternoon.
.WED NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft. Wave Detail: SE 4 ft at 10 seconds and W 3 ft at
6 seconds.
.THU...NE winds 10 to 15 kt, becoming SE 5 to 10 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 7 seconds and
SE 3 ft at 9 seconds.
.THU NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas
around 2 ft. Wave Detail: SE 2 ft at 7 seconds and E 1 ft at
4 seconds.
.FRI THROUGH SAT...S winds 5 to 10 kt. Seas around 2 ft.
.SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. Patchy fog. 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.

$$

ANZ230-240600-
Boston Harbor-
104 PM EDT Tue Apr 23 2024

.THIS AFTERNOON...SE winds 10 to 15 kt with gusts up to 20 kt.
Waves around 2 ft.
.TONIGHT...S winds 10 to 15 kt. Gusts up to 20 kt in the evening.
Waves around 2 ft in the evening, then 1 foot or less.
.WED...S winds 10 to 15 kt, becoming SW with gusts up to 20 kt in
the afternoon. Waves around 2 ft. A chance of showers in the
morning, then showers likely in the afternoon.
.WED NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt. Waves
around 2 ft.
.THU...N winds 10 to 15 kt with gusts up to 20 kt, becoming E in
the afternoon. Waves around 2 ft in the morning, then 1 foot or
less.
.THU NIGHT...S winds around 10 kt, becoming SW after midnight.
Waves 1 foot or less.
.FRI THROUGH SAT...S winds 10 to 15 kt with gusts up to 20 kt.
Waves around 2 ft.
.SAT NIGHT...S winds around 15 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.

$$

ANZ236-240600-
Narragansett Bay-
104 PM EDT Tue Apr 23 2024

.THIS AFTERNOON...S winds around 10 kt. Waves 1 foot or less.
.TONIGHT...S winds 5 to 10 kt. Waves 1 foot or less, then around
2 ft after midnight.
.WED...S winds 10 to 15 kt, becoming SW in the afternoon. Gusts
up to 20 kt. Waves 2 to 3 ft. A chance of showers in the
afternoon.
.WED NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Waves
2 to 3 ft.
.THU...N winds 10 to 15 kt, becoming SE 5 to 10 kt in the
afternoon. Waves 2 to 3 ft.
.THU NIGHT...S winds 5 to 10 kt, becoming SW after midnight.
Waves 1 foot or less.
.FRI THROUGH SAT NIGHT...S winds 10 to 15 kt with gusts up to
20 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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