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(1/4)
Latest Coastal Waters Forecast by KBOX
Issued 9/21/2026 1:03 PM America/New_York.
Valid through 9/22/2026 2:00 AM America/New_York.
fzus51 kbox 211703
cwfbox
expires:202609220600;;826034
coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 pm edt mon sep 21 2026
coastal waters from the merrimack river ma to watch hill ri out
to 60 nm
anz235-220600-
rhode island sound-
103 pm edt mon sep 21 2026
...small craft advisory in effect until 5 pm edt this afternoon...
...gale watch in effect from tuesday afternoon through thursday
afternoon...
.this afternoon...ne winds 20 to 25 kt. seas 3 to 4 ft. wave
detail: ne 4 ft at 4 seconds and se 2 ft at 8 seconds.
.tonight...ne winds 15 to 20 kt. seas 2 to 4 ft. wave detail: ne
3 ft at 4 seconds and w 1 foot at 5 seconds.
.tue...ne winds 20 to 25 kt. seas 3 to 5 ft. wave detail: n 5 ft
at 5 seconds and se 1 foot at 9 seconds.
.tue night...ne winds 20 to 25 kt with gusts up to 30 kt. seas
3 to 5 ft. wave detail: ne 5 ft at 5 seconds and se 2 ft at
9 seconds.
.wed and wed night...ne winds 25 to 30 kt with gusts up to 35 kt.
seas 5 to 7 ft. wave detail: se 7 ft at 10 seconds and e 6 ft at
6 seconds.
.thu...ne winds 25 to 30 kt with gusts up to 35 kt. seas 6 to
9 ft. wave detail: se 8 ft at 12 seconds and n 6 ft at 5 seconds.
.thu night...ne winds 25 to 30 kt with gusts up to 35 kt. seas
5 to 8 ft. a chance of showers.
.fri and fri night...ne winds 30 to 35 kt with gusts up to 45 kt.
seas 6 to 9 ft. showers likely.
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.
$$
(2/4)
Latest Coastal Waters Forecast by KBOX
Issued 9/21/2026 1:03 PM America/New_York.
Valid through 9/22/2026 2:00 AM America/New_York.
fzus51 kbox 211703
cwfbox
expires:202609220600;;826037
coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 pm edt mon sep 21 2026
coastal waters from the merrimack river ma to watch hill ri out
to 60 nm
anz236-220600-
narragansett bay-
103 pm edt mon sep 21 2026
.this afternoon...ne winds 15 to 20 kt with gusts up to 25 kt.
waves 2 to 3 ft.
.tonight...ne winds 10 to 15 kt with gusts up to 20 kt. waves
around 2 ft.
.tue...ne winds 15 to 20 kt with gusts up to 25 kt. waves 2 to
3 ft.
.tue night...ne winds 10 to 15 kt, increasing to 15 to 20 kt
after midnight. gusts up to 25 kt. waves 2 to 3 ft.
.wed and wed night...ne winds 15 to 20 kt with gusts up to 30 kt.
waves 2 to 3 ft, except 4 to 6 ft at the bay entrance.
.thu...ne winds 20 to 25 kt with gusts up to 30 kt. waves 2 to
3 ft, except 4 to 6 ft at the bay entrance.
.thu night and fri...ne winds 20 to 25 kt with gusts up to 30 kt,
becoming n 25 to 30 kt with gusts up to 40 kt. waves 2 to 3 ft,
except 4 to 6 ft at the bay entrance. a chance of showers.
.fri night...n winds 25 to 30 kt with gusts up to 40 kt. waves
around 3 ft, except 4 to 6 ft at the bay entrance. showers
likely.
seas are reported as significant wave height, which is the
average of the highest third of the waves. individual wave
heights may be more than twice the significant wave height.
$$
(3/4)
Latest Coastal Waters Forecast by KBOX
Issued 9/21/2026 1:03 PM America/New_York.
Valid through 9/22/2026 2:00 AM America/New_York.
fzus51 kbox 211703
cwfbox
expires:202609220600;;826035
coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 pm edt mon sep 21 2026
coastal waters from the merrimack river ma to watch hill ri out
to 60 nm
anz237-220600-
block island sound-
103 pm edt mon sep 21 2026
...small craft advisory in effect until 5 pm edt this afternoon...
...gale watch in effect from tuesday afternoon through thursday
afternoon...
.this afternoon...ne winds 15 to 20 kt with gusts up to 25 kt.
seas 3 to 4 ft. wave detail: ne 3 ft at 5 seconds and se 2 ft at
8 seconds.
.tonight...ne winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. seas 2 to 4 ft. wave detail: ne 3 ft at 5 seconds and
sw 1 foot at 5 seconds.
.tue...ne winds 15 to 20 kt with gusts up to 30 kt. seas 3 to
5 ft. wave detail: ne 5 ft at 6 seconds and se 1 foot at
9 seconds.
.tue night...ne winds 20 to 25 kt with gusts up to 30 kt. seas
3 to 5 ft. wave detail: ne 5 ft at 5 seconds and se 1 foot at
10 seconds.
.wed and wed night...ne winds 25 to 30 kt with gusts up to 35 kt.
seas 5 to 8 ft. wave detail: e 8 ft at 9 seconds and e 7 ft at
6 seconds.
.thu...ne winds 25 to 30 kt with gusts up to 35 kt. seas 6 to
9 ft. wave detail: se 9 ft at 12 seconds and ne 5 ft at
5 seconds.
.thu night...ne winds 25 to 30 kt with gusts up to 40 kt. seas
6 to 9 ft. a chance of showers.
.fri...n winds 25 to 30 kt with gusts up to 45 kt. seas 7 to
10 ft. a chance of showers.
.fri night...n winds around 30 kt with gusts up to 45 kt. seas
7 to 10 ft. showers likely.
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.
$$
(4/4)
Latest Coastal Waters Forecast by KBOX
Issued 9/21/2026 1:03 PM America/New_York.
Valid through 9/22/2026 2:00 AM America/New_York.
fzus51 kbox 211703
cwfbox
expires:202609220600;;826029
coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 pm edt mon sep 21 2026
coastal waters from the merrimack river ma to watch hill ri out
to 60 nm
anz255-220600-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
103 pm edt mon sep 21 2026
...small craft advisory in effect through late tonight...
...gale watch in effect from tuesday afternoon through thursday
afternoon...
.this afternoon...ne winds 20 to 25 kt. seas 3 to 4 ft. wave
detail: ne 4 ft at 5 seconds and se 2 ft at 8 seconds.
.tonight...ne winds 15 to 20 kt with gusts up to 25 kt. seas 3 to
5 ft. wave detail: ne 4 ft at 5 seconds and se 2 ft at 8 seconds.
.tue...ne winds 20 to 25 kt. seas 4 to 6 ft. wave detail: n 6 ft
at 6 seconds and se 1 foot at 15 seconds.
.tue night...ne winds 20 to 25 kt, increasing to 25 to 30 kt
after midnight. seas 5 to 7 ft. wave detail: ne 7 ft at 7 seconds
and e 5 ft at 13 seconds.
.wed...ne winds 25 to 30 kt with gusts up to 35 kt. seas 6 to
9 ft. wave detail: e 8 ft at 8 seconds and n 1 foot at 4 seconds.
.wed night...ne winds 25 to 30 kt with gusts up to 35 kt. seas
8 to 11 ft. wave detail: e 9 ft at 9 seconds and ne 7 ft at
7 seconds.
.thu...ne winds 25 to 30 kt with gusts up to 35 kt. seas 9 to
12 ft.
.thu night...ne winds around 30 kt with gusts up to 40 kt. seas
9 to 12 ft. a chance of showers.
.fri...ne winds 30 to 40 kt with gusts up to 50 kt. seas 9 to
13 ft. showers likely.
.fri night...ne winds 35 to 40 kt with gusts up to 50 kt. seas
9 to 13 ft. showers likely.
seas are reported as significant wave height, which is the
average of the highest third of the waves. individual wave
heights may be more than twice the significant wave height.
$$
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