fzus51 kbox 231703
cwfbox
expires:202609240600;;932092

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 pm edt wed sep 23 2026

coastal waters from the merrimack river ma to watch hill ri out
to 60 nm


anz231-240600-
cape cod bay-
103 pm edt wed sep 23 2026

...small craft advisory in effect until 8 pm edt this evening...
...gale warning in effect from 8 pm edt this evening through
friday morning...
...storm watch in effect from friday morning through saturday
evening...

.this afternoon...ne winds 20 to 25 kt with gusts up to 30 kt.
seas 3 to 5 ft. wave detail: ne 4 ft at 4 seconds and se 2 ft at
10 seconds. 
.tonight...ne winds 20 to 25 kt with gusts up to 30 kt. seas 3 to
5 ft. wave detail: se 5 ft at 9 seconds and ne 4 ft at 4 seconds.
.thu...ne winds 20 to 25 kt with gusts up to 35 kt. seas 3 to
5 ft. wave detail: ne 5 ft at 4 seconds and e 5 ft at 10 seconds.
.thu night...ne winds 20 to 25 kt, increasing to 25 to 30 kt
after midnight. seas 4 to 6 ft. wave detail: e 6 ft at 11 seconds
and n 5 ft at 5 seconds. 
.fri...ne winds 25 to 30 kt with gusts up to 40 kt, increasing to
30 to 35 kt with gusts up to 50 kt in the afternoon. seas 5 to
7 ft. wave detail: n 7 ft at 6 seconds and e 7 ft at 12 seconds.
a chance of showers. 
.fri night...ne winds 30 to 35 kt with gusts up to 45 kt. seas
6 to 9 ft. wave detail: n 9 ft at 6 seconds and e 9 ft at
11 seconds. showers.
.sat and sat night...ne winds 30 to 35 kt with gusts up to 50 kt.
seas 6 to 9 ft. showers with a chance of tstms. 
.sun...ne winds 25 to 30 kt with gusts up to 45 kt. seas 5 to
7 ft. showers likely. 
.sun night...ne winds 25 to 30 kt with gusts up to 40 kt. seas
4 to 6 ft. showers likely.  

winds and seas higher in and near tstms.

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.

$$

fzus51 kbox 231703
cwfbox
expires:202609240600;;932096

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 pm edt wed sep 23 2026

coastal waters from the merrimack river ma to watch hill ri out
to 60 nm


anz232-240600-
nantucket sound-
103 pm edt wed sep 23 2026

...gale warning in effect through late thursday night...
...storm watch in effect from late thursday night through
saturday evening...

.this afternoon...ne winds 25 to 30 kt with gusts up to 35 kt.
seas 4 to 6 ft. wave detail: e 5 ft at 6 seconds and se 2 ft at
10 seconds. 
.tonight...ne winds 25 to 30 kt with gusts up to 35 kt. seas 5 to
7 ft. wave detail: ne 6 ft at 5 seconds and e 6 ft at 10 seconds.
.thu...ne winds 25 to 30 kt with gusts up to 35 kt. seas 5 to
7 ft. wave detail: ne 6 ft at 6 seconds and e 6 ft at 11 seconds.
.thu night...ne winds 25 to 30 kt with gusts up to 40 kt. seas
5 to 7 ft. wave detail: ne 6 ft at 5 seconds and e 6 ft at
11 seconds. a chance of showers after midnight. 
.fri...ne winds 30 to 40 kt with gusts up to 45 kt. seas 5 to
7 ft. wave detail: n 6 ft at 6 seconds and e 5 ft at 11 seconds.
a chance of showers in the morning, then showers likely in the
afternoon. 
.fri night...ne winds 35 to 40 kt with gusts up to 45 kt. seas
5 to 8 ft. wave detail: n 8 ft at 6 seconds and e 5 ft at
12 seconds. showers. a chance of tstms after midnight. 
.sat and sat night...n winds 30 to 40 kt with gusts up to 45 kt.
seas 5 to 7 ft. showers with a chance of tstms. 
.sun and sun night...n winds 25 to 35 kt. gusts up to 45 kt. seas
4 to 6 ft. showers likely.  

winds and seas higher in and near tstms.

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.

$$

fzus51 kbox 231703
cwfbox
expires:202609240600;;932097

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 pm edt wed sep 23 2026

coastal waters from the merrimack river ma to watch hill ri out
to 60 nm


anz233-240600-
vineyard sound-
103 pm edt wed sep 23 2026

...gale warning in effect through late thursday night...
...storm watch in effect from late thursday night through
saturday evening...

.this afternoon...ne winds 25 to 30 kt. seas 4 to 5 ft. wave
detail: ne 4 ft at 5 seconds and se 1 foot at 9 seconds. 
.tonight...ne winds 20 to 25 kt, increasing to 25 to 30 kt after
midnight. seas 3 to 5 ft. wave detail: ne 4 ft at 5 seconds and
se 3 ft at 10 seconds. 
.thu...ne winds 25 to 30 kt with gusts up to 35 kt. seas 4 to
6 ft. wave detail: ne 4 ft at 5 seconds and se 3 ft at
12 seconds. 
.thu night...ne winds 25 to 30 kt with gusts up to 40 kt. seas
4 to 6 ft. wave detail: ne 5 ft at 6 seconds and se 2 ft at
12 seconds. a chance of showers after midnight. 
.fri...ne winds 30 to 40 kt with gusts up to 50 kt. seas 4 to
6 ft. wave detail: n 6 ft at 5 seconds and se 2 ft at 12 seconds.
a chance of showers in the morning, then showers likely in the
afternoon. 
.fri night...n winds 30 to 35 kt with gusts up to 45 kt. seas
4 to 6 ft. wave detail: n 6 ft at 8 seconds and ne 5 ft at
5 seconds. showers.
.sat and sat night...n winds 30 to 35 kt, diminishing to 25 to
30 kt. gusts up to 45 kt. seas 4 to 6 ft. showers with a chance
of tstms. 
.sun...n winds 25 to 30 kt with gusts up to 40 kt. seas 4 to
6 ft. showers likely. 
.sun night...n winds 20 to 25 kt with gusts up to 30 kt. seas
3 to 4 ft. showers likely.  

winds and seas higher in and near tstms.

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.

$$

fzus51 kbox 231703
cwfbox
expires:202609240600;;932098

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 pm edt wed sep 23 2026

coastal waters from the merrimack river ma to watch hill ri out
to 60 nm


anz234-240600-
buzzards bay-
103 pm edt wed sep 23 2026

...gale warning in effect through late thursday night...
...storm watch in effect from late thursday night through
saturday evening...

.this afternoon...ne winds 25 to 30 kt. seas 3 to 5 ft. wave
detail: ne 4 ft at 4 seconds and se 1 foot at 10 seconds. 
.tonight...ne winds 20 to 25 kt with gusts up to 30 kt. seas 3 to
5 ft. wave detail: n 4 ft at 4 seconds and se 2 ft at 11 seconds.
.thu...ne winds 25 to 30 kt with gusts up to 35 kt. seas 4 to
6 ft. wave detail: ne 4 ft at 4 seconds and e 3 ft at 14 seconds.
.thu night...ne winds 20 to 25 kt, increasing to 25 to 30 kt
after midnight. seas 4 to 6 ft. wave detail: n 5 ft at 7 seconds
and ne 4 ft at 4 seconds. 
.fri...ne winds 30 to 40 kt with gusts up to 50 kt. seas 4 to
6 ft. wave detail: n 6 ft at 6 seconds and e 2 ft at 11 seconds.
a chance of showers. 
.fri night...n winds 30 to 35 kt with gusts up to 45 kt. seas
4 to 6 ft. wave detail: n 6 ft at 8 seconds and ne 5 ft at
5 seconds. showers likely. 
.sat through sun...n winds 25 to 35 kt with gusts up to 45 kt.
seas 4 to 6 ft. showers.
.sun night...n winds 20 to 25 kt with gusts up to 30 kt. seas
around 3 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.

$$

fzus51 kbox 231703
cwfbox
expires:202609240600;;932099

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 pm edt wed sep 23 2026

coastal waters from the merrimack river ma to watch hill ri out
to 60 nm


anz235-240600-
rhode island sound-
103 pm edt wed sep 23 2026

...gale warning in effect through late thursday night...
...storm watch in effect from late thursday night through
saturday evening...

.this afternoon...ne winds 25 to 30 kt. seas 5 to 7 ft. wave
detail: ne 7 ft at 7 seconds and se 6 ft at 9 seconds. 
.tonight...ne winds 20 to 25 kt, increasing to 25 to 30 kt after
midnight. seas 5 to 8 ft. wave detail: ne 7 ft at 5 seconds and
se 7 ft at 10 seconds. 
.thu...ne winds 25 to 30 kt with gusts up to 35 kt. seas 5 to
8 ft. wave detail: se 7 ft at 12 seconds and ne 5 ft at
5 seconds. 
.thu night...ne winds 25 to 30 kt. gusts up to 40 kt after
midnight. seas 5 to 8 ft. wave detail: se 7 ft at 12 seconds and
ne 6 ft at 6 seconds. 
.fri...ne winds 30 to 40 kt with gusts up to 50 kt. seas 5 to
8 ft. wave detail: n 8 ft at 5 seconds and se 6 ft at 12 seconds.
a chance of showers. 
.fri night...n winds 30 to 35 kt with gusts up to 45 kt. seas
5 to 8 ft. wave detail: n 7 ft at 6 seconds and se 5 ft at
12 seconds. showers likely. 
.sat and sat night...n winds 30 to 35 kt with gusts up to 45 kt.
seas 5 to 8 ft. showers.
.sun...n winds 25 to 30 kt with gusts up to 40 kt. seas 4 to
6 ft. showers likely. 
.sun night...n winds 20 to 25 kt with gusts up to 30 kt. seas
3 to 5 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.

$$

fzus51 kbox 231703
cwfbox
expires:202609240600;;932102

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 pm edt wed sep 23 2026

coastal waters from the merrimack river ma to watch hill ri out
to 60 nm


anz236-240600-
narragansett bay-
103 pm edt wed sep 23 2026

...small craft advisory in effect through friday morning...
...gale warning in effect from friday morning through saturday
evening...

.this afternoon...ne winds 20 to 25 kt with gusts up to 30 kt.
waves around 3 ft. 
.tonight...ne winds 15 to 20 kt with gusts up to 30 kt. waves
2 to 3 ft. 
.thu...ne winds 20 to 25 kt with gusts up to 30 kt. waves around
3 ft, except 4 to 6 ft at the bay entrance. 
.thu night...ne winds 15 to 20 kt, increasing to 20 to 25 kt
after midnight. gusts up to 30 kt. waves 2 to 3 ft, except 4 to
6 ft at the bay entrance. 
.fri...n winds 25 to 30 kt with gusts up to 45 kt. waves around
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. 
.sat through sun...n winds 25 to 30 kt with gusts up to 45 kt.
waves around 3 ft. showers likely. 
.sun night...n winds 15 to 20 kt with gusts up to 30 kt. waves
2 to 3 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.

$$

fzus51 kbox 231703
cwfbox
expires:202609240600;;932090

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 pm edt wed sep 23 2026

coastal waters from the merrimack river ma to watch hill ri out
to 60 nm


anz250-240600-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
103 pm edt wed sep 23 2026

...small craft advisory in effect through late thursday night...
...gale warning in effect from late thursday night through friday
morning...
...storm watch in effect from friday morning through saturday
evening...

.this afternoon...ne winds 15 to 20 kt with gusts up to 30 kt.
seas 6 to 7 ft. wave detail: e 7 ft at 8 seconds and se 1 foot at
12 seconds. 
.tonight...ne winds 15 to 20 kt with gusts up to 30 kt. seas 6 to
7 ft. wave detail: e 7 ft at 9 seconds and n 1 foot at 4 seconds.
.thu...ne winds 20 to 25 kt, diminishing to 15 to 20 kt in the
afternoon. gusts up to 30 kt. seas 6 to 9 ft. wave detail: e 9 ft
at 10 seconds. 
.thu night...ne winds 15 to 20 kt, increasing to 20 to 25 kt
after midnight. gusts up to 35 kt. seas 7 to 10 ft. wave detail:
e 10 ft at 11 seconds and ne 6 ft at 7 seconds. 
.fri...ne winds 25 to 30 kt, increasing to 30 to 35 kt in the
afternoon. gusts up to 45 kt. seas 8 to 11 ft, building to 9 to
13 ft in the afternoon. wave detail: e 11 ft at 11 seconds and n
6 ft at 5 seconds, becoming e 11 ft at 11 seconds and ne 9 ft at
7 seconds. a chance of showers. 
.fri night...ne winds 30 to 35 kt with gusts up to 45 kt. seas
10 to 13 ft. wave detail: e 13 ft at 11 seconds and nw 11 ft at
5 seconds. a chance of showers in the evening, then showers
likely after midnight. 
.sat...ne winds 30 to 35 kt with gusts up to 50 kt. seas 11 to
14 ft. showers.
.sat night...ne winds around 30 kt with gusts up to 45 kt. seas
11 to 13 ft. showers with a chance of tstms. 
.sun...ne winds 25 to 30 kt with gusts up to 40 kt. seas 10 to
13 ft. showers likely. 
.sun night...ne winds 20 to 25 kt with gusts up to 35 kt. seas
8 to 11 ft. showers likely.  

winds and seas higher in and near tstms.

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.

$$

fzus51 kbox 231703
cwfbox
expires:202609240600;;932093

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 pm edt wed sep 23 2026

coastal waters from the merrimack river ma to watch hill ri out
to 60 nm


anz254-240600-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
103 pm edt wed sep 23 2026

...small craft advisory in effect until 8 pm edt this evening...
...gale warning in effect from 8 pm edt this evening through
friday morning...
...storm watch in effect from friday morning through saturday
evening...

.this afternoon...ne winds 20 to 25 kt with gusts up to 30 kt.
seas 6 to 9 ft. wave detail: e 8 ft at 8 seconds and se 5 ft at
10 seconds. 
.tonight...ne winds 20 to 25 kt, increasing to 25 to 30 kt after
midnight. seas 7 to 10 ft. wave detail: e 10 ft at 10 seconds and
n 1 foot at 4 seconds. 
.thu...ne winds 25 to 30 kt with gusts up to 35 kt. seas 8 to
11 ft. wave detail: e 11 ft at 10 seconds and ne 6 ft at
5 seconds. 
.thu night...ne winds 25 to 30 kt with gusts up to 40 kt. seas
9 to 13 ft. wave detail: e 12 ft at 11 seconds and n 6 ft at
5 seconds. a chance of showers after midnight. 
.fri...ne winds 25 to 35 kt, increasing to 30 to 40 kt in the
afternoon. seas 10 to 14 ft. wave detail: e 13 ft at 11 seconds
and ne 9 ft at 8 seconds. a chance of showers in the morning,
then showers likely in the afternoon. 
.fri night...ne winds 35 to 40 kt with gusts up to 45 kt. seas
11 to 15 ft. wave detail: e 13 ft at 12 seconds and ne 10 ft at
8 seconds. showers. a chance of tstms after midnight. 
.sat...ne winds 30 to 35 kt with gusts up to 45 kt. seas 11 to
15 ft. showers with a chance of tstms. 
.sat night...ne winds 30 to 35 kt with gusts up to 45 kt. seas
10 to 14 ft. showers with a chance of tstms. 
.sun...ne winds 25 to 30 kt with gusts up to 40 kt. seas 9 to
13 ft. showers likely. 
.sun night...ne winds 20 to 25 kt with gusts up to 30 kt. seas
8 to 11 ft. showers likely.  

winds and seas higher in and near tstms.

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.

$$

fzus51 kbox 231703
cwfbox
expires:202609240600;;932094

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 pm edt wed sep 23 2026

coastal waters from the merrimack river ma to watch hill ri out
to 60 nm


anz255-240600-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
103 pm edt wed sep 23 2026

...gale warning in effect through late thursday night...
...storm watch in effect from late thursday night through
saturday evening...

.this afternoon...ne winds 25 to 30 kt with gusts up to 35 kt.
seas 7 to 9 ft. wave detail: ne 9 ft at 8 seconds and se 6 ft at
9 seconds. 
.tonight...ne winds 25 to 30 kt with gusts up to 35 kt. seas 8 to
11 ft. wave detail: e 10 ft at 10 seconds and n 1 foot at
4 seconds. 
.thu...ne winds 25 to 30 kt with gusts up to 40 kt. seas 8 to
11 ft. wave detail: e 10 ft at 10 seconds and ne 7 ft at
7 seconds. 
.thu night...ne winds 30 to 35 kt with gusts up to 40 kt. seas
9 to 12 ft. wave detail: e 11 ft at 11 seconds and n 8 ft at
6 seconds. a chance of showers. 
.fri...ne winds 35 to 40 kt with gusts up to 45 kt. seas 9 to
12 ft. wave detail: e 10 ft at 11 seconds and n 9 ft at
7 seconds. showers likely. 
.fri night...ne winds 35 to 40 kt with gusts up to 45 kt. seas
9 to 13 ft. wave detail: e 12 ft at 12 seconds and n 9 ft at
7 seconds. showers. a chance of tstms after midnight. 
.sat...n winds 35 to 40 kt with gusts up to 45 kt. seas 9 to
13 ft. showers with a chance of tstms. 
.sat night...n winds 30 to 40 kt with gusts up to 45 kt. seas
9 to 12 ft. showers.
.sun...n winds 25 to 35 kt with gusts up to 40 kt. seas 7 to
10 ft. showers likely. 
.sun night...n winds 20 to 25 kt with gusts up to 30 kt. seas
6 to 9 ft. showers likely.  

winds and seas higher in and near tstms.

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.

$$