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000
FZUS51 KBOX 221405
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
1004 AM EDT Mon Apr 22 2024

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

ANZ200-230300-
1004 AM EDT Mon Apr 22 2024

.Synopsis for Massachusetts and Rhode Island coastal waters...
High pres dominates weather conditions through Tue. A cold front
will cross the region on Wed bringing a round of showers and
thunderstorms. High pres builds back in Thu through Sat.

$$

ANZ250-230300-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
1004 AM EDT Mon Apr 22 2024

.THIS AFTERNOON...NW winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 4 ft. Wave Detail: N 3 ft at 4 seconds and SE 1 ft at
6 seconds.
.TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: N
2 ft at 5 seconds and SE 1 ft at 7 seconds.
.TUE...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 25 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: S 2 ft
at 3 seconds and N 1 ft at 4 seconds.
.TUE NIGHT...S winds 10 to 15 kt with gusts up to 25 kt. Seas
2 to 4 ft. Wave Detail: S 2 ft at 4 seconds and SE 2 ft at
8 seconds.
.WED...S 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 morning, then showers likely in the
afternoon.
.WED NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt. Seas
5 to 7 ft. Wave Detail: N 6 ft at 6 seconds and E 5 ft at
9 seconds. A chance of showers in the evening.
.THU...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to
6 ft.
.THU NIGHT THROUGH FRI NIGHT...SW winds 10 to 15 kt with gusts up
to 20 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.

$$

ANZ251-230300-
Massachusetts Bay and Ipswich Bay-
1004 AM EDT Mon Apr 22 2024

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

$$

ANZ231-230300-
Cape Cod Bay-
1004 AM EDT Mon Apr 22 2024

.THIS AFTERNOON...N winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft. Wave Detail: N 2 ft at 4 seconds and SE 1 ft at
6 seconds.
.TONIGHT...S winds around 5 kt. Seas around 2 ft. Wave Detail: N
1 ft at 4 seconds and SE 1 ft at 7 seconds.
.TUE...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: W 1 ft
at 3 seconds and N 1 ft at 4 seconds.
.TUE NIGHT...S winds 5 to 10 kt. Seas around 2 ft in the evening,
then 1 foot or less. Wave Detail: SE 1 ft at 3 seconds and SE
1 ft at 8 seconds, becoming S 1 ft at 2 seconds and E 1 ft at
3 seconds.
.WED...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
3 ft. Wave Detail: SE 3 ft at 10 seconds and SW 2 ft at
3 seconds. 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. Seas
3 to 5 ft. Wave Detail: N 4 ft at 6 seconds and E 3 ft at
9 seconds. A chance of showers in the evening.
.THU...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft.
.THU NIGHT THROUGH FRI NIGHT...SW winds around 10 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.

$$

ANZ254-230300-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
1004 AM EDT Mon Apr 22 2024

.THIS AFTERNOON...N winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 4 ft. Wave Detail: N 3 ft at 4 seconds and SE 1 ft at
6 seconds.
.TONIGHT...S winds around 5 kt. Seas 2 to 3 ft. Wave Detail: N
2 ft at 4 seconds and SE 2 ft at 9 seconds.
.TUE...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE
2 ft at 9 seconds and N 1 ft at 5 seconds.
.TUE NIGHT...SE winds 5 to 10 kt, becoming S after midnight. Seas
2 to 4 ft. Wave Detail: E 3 ft at 9 seconds and NE 1 ft at
4 seconds.
.WED...S 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 SW 3 ft at
4 seconds. A chance of showers.
.WED NIGHT...W winds 20 to 25 kt, becoming N after midnight.
Gusts up to 35 kt. Seas 5 to 7 ft. Wave Detail: N 6 ft at
6 seconds and E 5 ft at 9 seconds.
.THU...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to
7 ft.
.THU NIGHT...W winds around 10 kt. Seas 3 to 5 ft.
.FRI AND FRI NIGHT...N winds around 10 kt, becoming SW. 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.

$$

ANZ255-230300-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
1004 AM EDT Mon Apr 22 2024

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

$$

ANZ256-230300-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
1004 AM EDT Mon Apr 22 2024

.THIS AFTERNOON...N winds 10 to 15 kt, becoming W 5 to 10 kt.
Seas around 2 ft. Wave Detail: NW 2 ft at 4 seconds and SE 1 ft
at 7 seconds.
.TONIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S
2 ft at 9 seconds and SW 1 ft at 3 seconds.
.TUE...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft
at 10 seconds and SW 1 ft at 3 seconds.
.TUE NIGHT...S winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: SE
3 ft at 8 seconds and SE 3 ft at 11 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 11 seconds and S 4 ft at 7 seconds.
A chance of showers.
.WED NIGHT...NW winds 15 to 20 kt, becoming N after midnight.
Gusts up to 30 kt. Seas 4 to 5 ft. Wave Detail: SE 5 ft at
10 seconds and W 4 ft at 6 seconds.
.THU...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft.
.THU NIGHT THROUGH FRI 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.

$$

ANZ232-230300-
Nantucket Sound-
1004 AM EDT Mon Apr 22 2024

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

$$

ANZ233-230300-
Vineyard Sound-
1004 AM EDT Mon Apr 22 2024

.THIS AFTERNOON...N winds around 10 kt, becoming W. Seas around
2 ft. Wave Detail: N 1 ft at 3 seconds and SE 1 ft at 7 seconds.
.TONIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW
1 ft at 3 seconds and NE 1 ft at 3 seconds.
.TUE...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 1 ft
at 3 seconds and S 1 ft at 8 seconds.
.TUE NIGHT...S winds 5 to 10 kt. Seas around 2 ft in the evening,
then 1 foot or less. Wave Detail: S 1 ft at 3 seconds and S 1 ft
at 8 seconds, becoming SW 1 ft at 3 seconds and E 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 8 seconds.
A chance of showers.
.WED NIGHT...NW winds 15 to 20 kt, becoming N after midnight.
Gusts up to 30 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at
5 seconds and SE 2 ft at 10 seconds. A chance of showers in the
evening.
.THU THROUGH FRI NIGHT...SW winds 10 to 15 kt with gusts up to
25 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.

$$

ANZ234-230300-
Buzzards Bay-
1004 AM EDT Mon Apr 22 2024

.THIS AFTERNOON...N winds around 10 kt, becoming W. Seas around
2 ft. Wave Detail: N 1 ft at 3 seconds and SE 1 ft at 7 seconds.
.TONIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW
1 ft at 3 seconds and NE 1 ft at 3 seconds.
.TUE...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 1 ft
at 3 seconds and NE 1 ft at 3 seconds.
.TUE NIGHT...S winds 5 to 10 kt. Seas around 2 ft in the evening,
then 1 foot or less. Wave Detail: S 1 ft at 3 seconds and S 1 ft
at 8 seconds, becoming SW 1 ft at 3 seconds and E 1 ft at
3 seconds.
.WED...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft. Wave Detail: SW 2 ft at 4 seconds and E 2 ft at 8 seconds.
A chance of showers.
.WED NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas
2 to 3 ft. Wave Detail: NW 3 ft at 4 seconds and N 2 ft at
6 seconds. A chance of showers in the evening.
.THU THROUGH FRI NIGHT...SW winds 10 to 15 kt with gusts up to
25 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.

$$

ANZ235-230300-
Rhode Island Sound-
1004 AM EDT Mon Apr 22 2024

.THIS AFTERNOON...N winds around 10 kt, becoming W. Seas around
2 ft. Wave Detail: N 2 ft at 3 seconds and SE 1 ft at 7 seconds.
.TONIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW
1 ft at 3 seconds and N 1 ft at 3 seconds.
.TUE...S winds around 5 kt, increasing to around 10 kt in the
afternoon. Seas around 2 ft. Wave Detail: S 2 ft at 9 seconds and
S 1 ft at 3 seconds.
.TUE NIGHT...S winds around 10 kt. Seas around 2 ft. Wave Detail:
SE 2 ft at 10 seconds and S 1 ft at 3 seconds.
.WED...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Wave Detail: SE 4 ft at 11 seconds and S 3 ft at 4 seconds.
A chance of showers.
.WED NIGHT...NW winds 15 to 20 kt, becoming N after midnight.
Gusts up to 30 kt. Seas 3 to 4 ft. Wave Detail: SW 4 ft at
6 seconds and SE 4 ft at 9 seconds. A chance of showers in the
evening.
.THU AND THU NIGHT...NW winds 10 to 15 kt, becoming W 5 to 10 kt.
Gusts up to 25 kt. Seas 2 to 4 ft.
.FRI AND FRI NIGHT...E winds 5 to 10 kt, becoming SW. 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.

$$

ANZ237-230300-
Block Island Sound-
1004 AM EDT Mon Apr 22 2024

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

$$

ANZ230-230300-
Boston Harbor-
1004 AM EDT Mon Apr 22 2024

.THIS AFTERNOON...NW winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt. Waves around 2 ft.
.TONIGHT...S winds around 5 kt. Waves 1 foot or less.
.TUE...S 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, then around 2 ft
in the afternoon.
.TUE NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Waves around 2 ft.
.WED...SW winds 10 to 15 kt. Gusts up to 20 kt in the morning.
Waves around 2 ft. Showers likely.
.WED NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Waves
around 2 ft. A chance of showers in the evening.
.THU THROUGH FRI NIGHT...SW winds 10 to 15 kt with gusts up to
25 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.

$$

ANZ236-230300-
Narragansett Bay-
1004 AM EDT Mon Apr 22 2024

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

$$

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