fzus51 kbox 232003
cwfbox
expires:202609240900;;940860

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

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


anz231-240900-
cape cod bay-
403 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...

.tonight...ne winds 20 to 25 kt with gusts up to 30 kt. seas 3 to
5 ft. wave detail: se 5 ft at 10 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: e 5 ft at 11 seconds and ne 4 ft at 4 seconds.
.thu night...ne winds 20 to 25 kt with gusts up to 30 kt,
increasing to 25 to 30 kt with gusts up to 40 kt after midnight.
seas 4 to 6 ft. wave detail: e 6 ft at 11 seconds and n 5 ft at
4 seconds. 
.fri...ne winds 25 to 35 kt with gusts up to 50 kt. seas 7 to
10 ft. wave detail: e 10 ft at 12 seconds and n 8 ft at
6 seconds. a chance of rain in the morning, then rain likely in
the afternoon. 
.fri night and sat...n winds 30 to 40 kt with gusts up to 50 kt.
seas 9 to 12 ft. wave detail: e 12 ft at 11 seconds and n 10 ft
at 7 seconds. rain.
.sat night...n winds 30 to 35 kt with gusts up to 45 kt. seas
8 to 11 ft. wave detail: n 11 ft at 7 seconds and se 5 ft at
10 seconds. a chance of tstms. rain in the evening, then showers
after midnight. 
.sun...ne winds 25 to 30 kt with gusts up to 45 kt. seas 7 to
10 ft. showers with a chance of tstms. 
.sun night...ne winds 25 to 30 kt with gusts up to 40 kt. seas
5 to 8 ft. showers.
.mon...n winds 20 to 25 kt with gusts up to 30 kt. seas 4 to
6 ft. a chance of showers. 
.mon night...n winds 10 to 15 kt with gusts up to 25 kt. seas
2 to 4 ft. a chance of showers.  

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 232003
cwfbox
expires:202609240900;;940864

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

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


anz232-240900-
nantucket sound-
403 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...

.tonight...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 se 4 ft at
11 seconds. 
.thu...ne winds 25 to 30 kt with gusts up to 35 kt. seas 5 to
7 ft. wave detail: e 6 ft at 6 seconds and se 6 ft at 11 seconds.
.thu night...ne winds 25 to 30 kt with gusts up to 35 kt,
increasing to 30 to 35 kt with gusts up to 45 kt after midnight.
seas 5 to 7 ft. wave detail: n 6 ft at 5 seconds and e 6 ft at
11 seconds. a chance of rain after midnight. 
.fri...ne winds 30 to 40 kt with gusts up to 50 kt. seas 7 to
10 ft. wave detail: n 7 ft at 5 seconds and e 6 ft at 11 seconds.
rain.
.fri night...ne winds 35 to 40 kt with gusts up to 50 kt. seas
8 to 11 ft. wave detail: n 8 ft at 6 seconds and e 6 ft at
12 seconds. rain.
.sat...n winds 30 to 40 kt with gusts up to 45 kt. seas 8 to
11 ft. wave detail: n 8 ft at 6 seconds and e 5 ft at 11 seconds.
rain.
.sat night...n winds 30 to 40 kt with gusts up to 45 kt. seas
7 to 10 ft. rain with a chance of tstms in the evening, then
showers after midnight. 
.sun...n winds 25 to 30 kt with gusts up to 35 kt. seas 5 to
8 ft. showers.
.sun night...ne winds 25 to 30 kt. seas 4 to 6 ft. showers
likely. 
.mon...n winds 20 to 25 kt. seas 3 to 5 ft. a chance of showers. 
.mon night...nw winds 10 to 15 kt with gusts up to 20 kt. seas
2 to 3 ft. a chance of showers.  

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 232003
cwfbox
expires:202609240900;;940865

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

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


anz233-240900-
vineyard sound-
403 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...

.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 4 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 2 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: n 4 ft at 5 seconds and se 2 ft at
14 seconds. a chance of rain after midnight. 
.fri...ne winds 30 to 40 kt with gusts up to 50 kt. seas 5 to
8 ft. wave detail: n 5 ft at 6 seconds and se 2 ft at 12 seconds.
rain likely. 
.fri night...n winds 35 to 40 kt with gusts up to 50 kt. seas
6 to 8 ft, building to 7 to 10 ft after midnight. wave detail: n
6 ft at 6 seconds and se 3 ft at 12 seconds. rain.
.sat...n winds 30 to 35 kt with gusts up to 45 kt. seas 5 to
8 ft. wave detail: n 6 ft at 6 seconds and se 2 ft at 11 seconds.
rain.
.sat night...n winds 25 to 30 kt with gusts up to 40 kt. seas
5 to 7 ft. rain with a chance of tstms in the evening, then
showers after midnight. 
.sun...n winds 25 to 30 kt with gusts up to 40 kt. seas 4 to
6 ft. showers.
.sun night...n winds 20 to 25 kt with gusts up to 30 kt. seas
4 to 5 ft. showers likely. 
.mon and mon night...n winds 15 to 20 kt, becoming nw 10 to
15 kt. gusts up to 25 kt. seas 2 to 4 ft. a chance of showers.  

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 232003
cwfbox
expires:202609240900;;940866

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

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


anz234-240900-
buzzards bay-
403 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...

.tonight...ne winds 20 to 25 kt with gusts up to 30 kt. seas 3 to
5 ft. wave detail: se 5 ft at 11 seconds and n 4 ft at 5 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 se 3 ft at
13 seconds. 
.thu night...ne winds 20 to 25 kt, increasing to 25 to 30 kt
after midnight. gusts up to 40 kt. seas 4 to 6 ft. wave detail: n
4 ft at 4 seconds and se 2 ft at 14 seconds. 
.fri...ne winds 30 to 35 kt with gusts up to 50 kt. seas 5 to
7 ft. wave detail: n 5 ft at 5 seconds and e 2 ft at 10 seconds.
a chance of rain in the morning, then rain likely in the
afternoon. 
.fri night and sat...n winds 30 to 35 kt with gusts up to 50 kt.
seas 5 to 7 ft. wave detail: n 7 ft at 6 seconds and e 2 ft at
11 seconds. rain.
.sat night...n winds 25 to 30 kt with gusts up to 40 kt. seas
4 to 5 ft. wave detail: n 5 ft at 5 seconds and e 4 ft at
11 seconds. rain in the evening. showers after midnight. 
.sun...n winds 25 to 30 kt with gusts up to 40 kt. seas 4 to
5 ft. showers.
.sun night...n winds 20 to 25 kt with gusts up to 30 kt. seas
around 4 ft. showers likely. 
.mon and mon night...n winds 15 to 20 kt, becoming nw 10 to
15 kt. gusts up to 25 kt. seas 2 to 4 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.

$$

fzus51 kbox 232003
cwfbox
expires:202609240900;;940867

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

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


anz235-240900-
rhode island sound-
403 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...

.tonight...ne winds 20 to 25 kt, increasing to 25 to 30 kt after
midnight. seas 5 to 8 ft. wave detail: ne 8 ft at 6 seconds and
se 7 ft at 11 seconds. 
.thu...ne winds 25 to 30 kt with gusts up to 35 kt. seas 5 to
8 ft. wave detail: se 8 ft at 11 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. wave detail: se 7 ft at 12 seconds and n 6 ft at
5 seconds. 
.fri...ne winds 30 to 40 kt with gusts up to 50 kt. seas 9 to
12 ft. wave detail: n 8 ft at 6 seconds and se 8 ft at
13 seconds. a chance of rain in the morning, then rain likely in
the afternoon. 
.fri night...n winds 30 to 40 kt with gusts up to 50 kt. seas
9 to 13 ft. wave detail: n 8 ft at 6 seconds and se 8 ft at
12 seconds. rain likely. 
.sat...n winds 30 to 35 kt with gusts up to 45 kt. seas 9 to
12 ft, subsiding to 7 to 10 ft in the afternoon. wave detail: n
8 ft at 6 seconds and se 8 ft at 11 seconds, becoming n 7 ft at
6 seconds and se 5 ft at 10 seconds. rain.
.sat night...n winds 25 to 30 kt with gusts up to 40 kt. seas
7 to 10 ft, subsiding to 5 to 8 ft after midnight. rain in the
evening. showers after midnight. 
.sun...n winds 25 to 30 kt with gusts up to 35 kt. seas 5 to
8 ft. showers.
.sun night...n winds 20 to 25 kt with gusts up to 30 kt. seas
4 to 6 ft. showers likely. 
.mon...n winds 15 to 20 kt with gusts up to 25 kt. seas 3 to
5 ft. a chance of showers. 
.mon night...nw winds 10 to 15 kt with gusts up to 20 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.

$$

fzus51 kbox 232003
cwfbox
expires:202609240900;;940870

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

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


anz236-240900-
narragansett bay-
403 pm edt wed sep 23 2026

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

.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 35 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 5 to 7 ft at the bay entrance. rain likely in the
afternoon. 
.fri night and sat...n winds 25 to 30 kt with gusts up to 40 kt.
waves around 3 ft, except 5 to 7 ft at the bay entrance. rain.
.sat night...n winds 20 to 25 kt with gusts up to 35 kt. waves
around 3 ft, except 4 to 6 ft at the bay entrance. rain in the
evening. showers after midnight. 
.sun...n winds 20 to 25 kt with gusts up to 35 kt. waves around
3 ft. showers.
.sun night...n winds 15 to 20 kt with gusts up to 30 kt. waves
2 to 3 ft. showers likely. 
.mon...n winds 15 to 20 kt with gusts up to 25 kt. waves 2 to
3 ft. a chance of showers. 
.mon night...nw 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.

$$

fzus51 kbox 232003
cwfbox
expires:202609240900;;940858

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

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


anz250-240900-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
403 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...

.tonight...ne winds 15 to 20 kt with gusts up to 30 kt. seas 6 to
7 ft. wave detail: e 7 ft at 10 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 9 ft, building to
8 to 11 ft after midnight. wave detail: e 9 ft at 11 seconds and
n 1 foot at 4 seconds, becoming e 11 ft at 11 seconds and ne 7 ft
at 10 seconds. 
.fri...ne winds 25 to 30 kt with gusts up to 50 kt. seas 11 to
15 ft, building to 13 to 18 ft in the afternoon. wave detail: e
13 ft at 12 seconds and n 8 ft at 6 seconds, becoming e 14 ft at
12 seconds and n 9 ft at 7 seconds. a chance of rain in the
afternoon. 
.fri night...ne winds 30 to 35 kt with gusts up to 50 kt. seas
16 to 20 ft. wave detail: e 17 ft at 11 seconds and ne 12 ft at
9 seconds. rain likely. 
.sat...n winds 30 to 35 kt with gusts up to 50 kt. seas 17 to
22 ft, subsiding to 16 to 20 ft in the afternoon. wave detail: ne
17 ft at 11 seconds and ne 11 ft at 11 seconds, becoming e 16 ft
at 11 seconds and ne 15 ft at 10 seconds. rain.
.sat night...n winds around 30 kt with gusts up to 45 kt. seas
14 to 18 ft. rain in the evening. showers after midnight. 
.sun...ne winds 25 to 30 kt with gusts up to 40 kt. seas 12 to
16 ft. showers.
.sun night...ne winds 25 to 30 kt with gusts up to 40 kt. seas
9 to 12 ft. showers.
.mon...n winds 20 to 25 kt with gusts up to 30 kt. seas 5 to
8 ft. showers likely. 
.mon night...n winds 10 to 15 kt with gusts up to 20 kt. seas
4 to 6 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.

$$

fzus51 kbox 232003
cwfbox
expires:202609240900;;940861

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

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


anz254-240900-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
403 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...

.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. 
.thu night...ne winds 25 to 30 kt with gusts up to 40 kt. seas
9 to 13 ft. wave detail: e 13 ft at 11 seconds and ne 7 ft at
7 seconds. a chance of rain after midnight. 
.fri...ne winds 25 to 35 kt, becoming 30 to 35 kt in the
afternoon. gusts up to 45 kt. seas 12 to 17 ft, building to 14 to
19 ft in the afternoon. wave detail: e 15 ft at 12 seconds and n
9 ft at 6 seconds, becoming e 17 ft at 12 seconds and ne 10 ft at
8 seconds. rain.
.fri night...ne winds 30 to 40 kt with gusts up to 50 kt. seas
17 to 22 ft. wave detail: e 18 ft at 12 seconds and n 11 ft at
6 seconds. rain.
.sat...ne winds 30 to 35 kt with gusts up to 45 kt. seas 17 to
22 ft, subsiding to 14 to 19 ft in the afternoon. wave detail: e
18 ft at 11 seconds and ne 15 ft at 10 seconds, becoming ne 15 ft
at 10 seconds and n 10 ft at 6 seconds. rain.
.sat night...n winds 30 to 35 kt, diminishing to 25 to 30 kt
after midnight. seas 12 to 17 ft. a chance of tstms. rain in the
evening, then showers after midnight. 
.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
7 to 10 ft. showers likely. 
.mon...n winds 15 to 20 kt with gusts up to 25 kt. seas 5 to
7 ft. a chance of showers. 
.mon night...nw winds 10 to 15 kt with gusts up to 20 kt. seas
4 to 6 ft. a chance of showers.  

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 232003
cwfbox
expires:202609240900;;940862

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

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


anz255-240900-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
403 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...

.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
5 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 11 seconds and ne 8 ft at
7 seconds. 
.thu night...ne winds 30 to 40 kt with gusts up to 45 kt. seas
8 to 11 ft, building to 9 to 13 ft after midnight. wave detail: e
11 ft at 11 seconds and n 8 ft at 5 seconds, becoming e 12 ft at
11 seconds and n 8 ft at 6 seconds. a chance of rain after
midnight. 
.fri...ne winds 35 to 40 kt with gusts up to 50 kt. seas 11 to
15 ft, building to 12 to 17 ft in the afternoon. s and e of
nantucket, seas 14 to 19 ft, building to 17 to 22 ft in the
afternoon. wave detail: e 13 ft at 12 seconds and n 10 ft at
6 seconds, becoming e 14 ft at 12 seconds and n 11 ft at
7 seconds. rain.
.fri night...ne winds 35 to 40 kt with gusts up to 50 kt. seas
14 to 19 ft, except 18 to 22 ft s and e of nantucket. wave
detail: e 15 ft at 12 seconds and n 13 ft at 7 seconds. rain.
.sat...n winds 35 to 40 kt with gusts up to 45 kt. seas 12 to
17 ft. s and e of nantucket, seas 17 to 20 ft, subsiding to 14 to
19 ft in the afternoon. wave detail: e 14 ft at 11 seconds and n
11 ft at 7 seconds. rain.
.sat night...n winds 30 to 40 kt with gusts up to 45 kt. seas
10 to 14 ft. a chance of tstms. rain in the evening, then showers
after midnight. 
.sun...n winds 25 to 30 kt with gusts up to 35 kt. seas 8 to
11 ft. showers likely. 
.sun night...n winds 20 to 25 kt with gusts up to 30 kt. seas
5 to 8 ft. showers likely. 
.mon...nw winds 20 to 25 kt. seas 4 to 6 ft. a chance of showers.
.mon night...nw winds 10 to 15 kt with gusts up to 20 kt. seas
3 to 5 ft.  

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.

$$