fzus51 kbox 181404
cwfbox
expires:202610190300;;311049

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1004 am edt sun oct 18 2026

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


anz231-190300-
cape cod bay-
1004 am edt sun oct 18 2026

.this afternoon...ne winds 5 to 10 kt. seas around 2 ft. wave
detail: n 2 ft at 5 seconds and se 1 foot at 9 seconds. 
.tonight...e winds 5 to 10 kt. seas around 2 ft. wave detail: n
2 ft at 4 seconds and se 1 foot at 11 seconds. 
.mon...ne winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. wave detail: e 2 ft at 10 seconds and ne 1 foot at
4 seconds. 
.mon night...ne winds 15 to 20 kt, increasing to 20 to 25 kt
after midnight. gusts up to 30 kt. seas 3 to 5 ft. wave detail: n
4 ft at 4 seconds and e 4 ft at 10 seconds. 
.tue...ne winds 20 to 25 kt with gusts up to 30 kt. seas 3 to
5 ft. wave detail: n 5 ft at 5 seconds and e 5 ft at 10 seconds. 
.tue night...ne winds 25 to 30 kt with gusts up to 35 kt. seas
4 to 6 ft. wave detail: n 6 ft at 5 seconds and e 5 ft at
9 seconds. 
.wed...ne winds 25 to 30 kt with gusts up to 35 kt. seas 4 to
6 ft. 
.wed night and thu...ne winds 20 to 25 kt with gusts up to 30 kt.
seas 4 to 6 ft. a chance of showers.
.thu night...n winds 25 to 30 kt with gusts up to 35 kt. seas
4 to 6 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 181404
cwfbox
expires:202610190300;;311053

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1004 am edt sun oct 18 2026

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


anz232-190300-
nantucket sound-
1004 am edt sun oct 18 2026

.this afternoon...ne winds 10 to 15 kt. gusts up to 20 kt. seas
2 to 3 ft. wave detail: n 2 ft at 5 seconds and se 1 foot at
8 seconds. 
.tonight...e winds 10 to 15 kt. gusts up to 20 kt after midnight.
seas 2 to 3 ft. wave detail: ne 2 ft at 5 seconds and e 1 foot at
9 seconds. 
.mon...ne winds 15 to 20 kt with gusts up to 25 kt. seas 3 to
5 ft. wave detail: e 4 ft at 9 seconds and ne 3 ft at 5 seconds. 
.mon 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 5 seconds
and e 4 ft at 10 seconds. a chance of showers. 
.tue and tue night...ne winds 25 to 35 kt with gusts up to 40 kt.
seas 5 to 7 ft. wave detail: n 6 ft at 5 seconds and e 4 ft at
10 seconds. 
.wed...ne winds 25 to 35 kt. seas 5 to 7 ft. wave detail: n 6 ft
at 5 seconds and e 5 ft at 9 seconds. 
.wed night...ne winds 25 to 30 kt with gusts up to 35 kt. seas
5 to 7 ft. a chance of showers. 
.thu...n winds 25 to 30 kt. seas 4 to 6 ft. a chance of showers. 
.thu night...n winds 25 to 30 kt with gusts up to 35 kt. seas
4 to 6 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 181404
cwfbox
expires:202610190300;;311054

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1004 am edt sun oct 18 2026

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


anz233-190300-
vineyard sound-
1004 am edt sun oct 18 2026

.this afternoon...ne winds 10 to 15 kt. seas around 2 ft. wave
detail: n 1 foot at 3 seconds and se 1 foot at 8 seconds. 
.tonight...e winds 10 to 15 kt. seas 1 foot or less, then around
2 ft after midnight. wave detail: ne 1 foot at 4 seconds and se
1 foot at 11 seconds, becoming ne 1 foot at 4 seconds and se
1 foot at 9 seconds. 
.mon...ne winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. gusts up to 25 kt. seas 2 to 4 ft. wave detail: ne
2 ft at 4 seconds and e 1 foot at 11 seconds. 
.mon night...ne winds 15 to 20 kt, becoming n 20 to 25 kt after
midnight. gusts up to 30 kt. seas 3 to 5 ft. wave detail: n 4 ft
at 5 seconds and se 3 ft at 12 seconds. 
.tue and tue night...ne winds 25 to 30 kt with gusts up to 35 kt.
seas 3 to 5 ft. wave detail: n 5 ft at 5 seconds and se 2 ft at
10 seconds. 
.wed...ne winds 25 to 30 kt with gusts up to 35 kt. seas 4 to
6 ft. wave detail: ne 5 ft at 6 seconds and e 2 ft at 10 seconds.
.wed night and thu...ne winds 25 to 30 kt, becoming n 20 to
25 kt. seas 3 to 5 ft. a chance of showers. 
.thu night...n winds 20 to 25 kt with gusts up to 30 kt. seas
3 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.

$$

fzus51 kbox 181404
cwfbox
expires:202610190300;;311055

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1004 am edt sun oct 18 2026

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


anz234-190300-
buzzards bay-
1004 am edt sun oct 18 2026

.this afternoon...ne winds 5 to 10 kt. seas around 2 ft, then
1 foot or less. wave detail: n 1 foot at 3 seconds and se 1 foot
at 7 seconds. 
.tonight...e winds 5 to 10 kt. seas 1 foot or less. wave detail:
ne 1 foot at 3 seconds and e 1 foot at 13 seconds. 
.mon...ne winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. gusts up to 25 kt. seas 2 to 4 ft. wave detail: n 2 ft
at 4 seconds and se 2 ft at 18 seconds. 
.mon night...ne winds 15 to 20 kt, becoming n 20 to 25 kt after
midnight. gusts up to 30 kt. seas 2 to 4 ft. wave detail: n 4 ft
at 5 seconds and se 2 ft at 13 seconds. 
.tue and tue night...ne winds 25 to 30 kt with gusts up to 35 kt.
seas 3 to 5 ft. wave detail: n 5 ft at 5 seconds and se 2 ft at
8 seconds. 
.wed...ne winds 25 to 30 kt with gusts up to 35 kt. seas 4 to
6 ft. wave detail: n 5 ft at 5 seconds and e 2 ft at 10 seconds. 
.wed night and thu...n winds 20 to 25 kt with gusts up to 30 kt.
seas 3 to 5 ft. a chance of showers. 
.thu night...n winds 20 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.

$$

fzus51 kbox 181404
cwfbox
expires:202610190300;;311056

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1004 am edt sun oct 18 2026

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


anz235-190300-
rhode island sound-
1004 am edt sun oct 18 2026

.this afternoon...ne winds 10 to 15 kt, diminishing to 5 to
10 kt. seas around 2 ft. wave detail: n 2 ft at 4 seconds and se
1 foot at 8 seconds. 
.tonight...e winds 10 to 15 kt. gusts up to 20 kt after midnight.
seas around 2 ft. wave detail: ne 2 ft at 4 seconds and se 1 foot
at 9 seconds. 
.mon...ne winds 15 to 20 kt with gusts up to 25 kt. seas 3 to
5 ft. wave detail: se 5 ft at 11 seconds and ne 4 ft at
4 seconds. 
.mon night...ne winds 20 to 25 kt with gusts up to 30 kt. seas
5 to 7 ft. wave detail: se 7 ft at 12 seconds and n 5 ft at
5 seconds. 
.tue and tue night...ne winds 25 to 30 kt with gusts up to 35 kt.
seas 5 to 7 ft. wave detail: se 7 ft at 11 seconds and n 6 ft at
5 seconds. 
.wed...ne winds 25 to 30 kt with gusts up to 35 kt. seas 5 to
8 ft. wave detail: n 6 ft at 6 seconds and se 5 ft at 9 seconds. 
.wed night and thu...ne winds 25 to 30 kt, becoming n 20 to
25 kt. seas 5 to 7 ft. a chance of showers. 
.thu night...n winds 20 to 25 kt with gusts up to 30 kt. seas
4 to 6 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 181404
cwfbox
expires:202610190300;;311059

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1004 am edt sun oct 18 2026

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


anz236-190300-
narragansett bay-
1004 am edt sun oct 18 2026

.this afternoon...ne winds 5 to 10 kt. waves around 2 ft, then
1 foot or less. 
.tonight...ne winds 5 to 10 kt. waves 1 foot or less. 
.mon...ne winds 10 to 15 kt. gusts up to 20 kt in the afternoon.
waves 2 to 3 ft. 
.mon night...ne winds 10 to 15 kt, becoming n 15 to 20 kt after
midnight. gusts up to 25 kt. waves 2 to 3 ft. 
.tue and tue night...ne winds 20 to 25 kt with gusts up to 30 kt.
waves 2 to 3 ft. 
.wed...ne winds 20 to 25 kt with gusts up to 30 kt. waves around
3 ft. 
.wed night and thu...n winds 15 to 20 kt with gusts up to 25 kt.
waves 2 to 3 ft. a chance of showers. 
.thu night...n winds 15 to 20 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.

$$

fzus51 kbox 181404
cwfbox
expires:202610190300;;311047

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1004 am edt sun oct 18 2026

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


anz250-190300-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
1004 am edt sun oct 18 2026

.this afternoon...ne winds 5 to 10 kt, becoming n. seas 2 to
3 ft. wave detail: n 3 ft at 4 seconds and se 1 foot at
8 seconds. 
.tonight...se winds 5 to 10 kt. seas around 2 ft. wave detail: ne
2 ft at 5 seconds and nw 1 foot at 3 seconds. 
.mon...e winds 5 to 10 kt. seas 2 to 3 ft, building to 3 to 5 ft
in the afternoon. wave detail: e 3 ft at 9 seconds and e 2 ft at
6 seconds, becoming e 4 ft at 9 seconds and e 3 ft at 6 seconds. 
.mon night...ne winds 10 to 15 kt, increasing to 15 to 20 kt
after midnight. gusts up to 25 kt. seas 5 to 7 ft, building to
6 to 9 ft after midnight. wave detail: se 7 ft at 10 seconds and
e 2 ft at 7 seconds, becoming e 8 ft at 11 seconds and n 3 ft at
4 seconds.
.tue and tue night...ne winds 20 to 25 kt with gusts up to 30 kt.
seas 7 to 9 ft. wave detail: e 9 ft at 10 seconds and ne 6 ft at
7 seconds. 
.wed through thu night...n winds 20 to 25 kt with gusts up to
30 kt. seas 7 to 10 ft. wave detail: e 9 ft at 9 seconds and n
8 ft at 5 seconds.  

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 181404
cwfbox
expires:202610190300;;311050

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1004 am edt sun oct 18 2026

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


anz254-190300-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
1004 am edt sun oct 18 2026

...small craft advisory in effect until 11 am edt this morning...
...gale watch in effect from monday evening through wednesday
morning...

.this afternoon...ne winds 15 to 20 kt, diminishing to 10 to
15 kt. seas 3 to 5 ft. wave detail: n 5 ft at 7 seconds and se
1 foot at 8 seconds. 
.tonight...e winds 10 to 15 kt with gusts up to 20 kt. seas 3 to
5 ft. wave detail: e 4 ft at 7 seconds and n 2 ft at 5 seconds. 
.mon...ne winds 15 to 20 kt with gusts up to 25 kt. seas 5 to
7 ft. wave detail: e 7 ft at 9 seconds and e 5 ft at 6 seconds. 
.mon night...ne winds 20 to 25 kt, increasing to 25 to 30 kt
after midnight. seas 8 to 11 ft. wave detail: e 10 ft at
10 seconds and n 4 ft at 4 seconds. a chance of showers. 
.tue...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 7 ft at
5 seconds. a chance of showers in the morning. 
.tue night...ne winds 25 to 30 kt with gusts up to 35 kt. seas
9 to 12 ft. wave detail: e 11 ft at 9 seconds and ne 8 ft at
7 seconds. 
.wed...ne winds 25 to 30 kt with gusts up to 35 kt. seas 9 to
13 ft. 
.wed night and thu...ne winds 25 to 30 kt, becoming n 20 to
25 kt. seas 9 to 13 ft. a chance of showers. 
.thu night...n winds 25 to 30 kt with gusts up to 35 kt. seas
7 to 10 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 181404
cwfbox
expires:202610190300;;311051

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1004 am edt sun oct 18 2026

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


anz255-190300-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
1004 am edt sun oct 18 2026

...small craft advisory in effect until 11 am edt this morning...
...gale watch in effect from monday evening through wednesday
morning...

.this afternoon...ne winds 15 to 20 kt, diminishing to 10 to
15 kt. seas 3 to 5 ft. wave detail: n 4 ft at 5 seconds and se
1 foot at 8 seconds. 
.tonight...e winds 15 to 20 kt with gusts up to 25 kt. seas 3 to
5 ft. wave detail: e 4 ft at 6 seconds and e 3 ft at 9 seconds. 
.mon...ne winds 20 to 25 kt with gusts up to 30 kt. seas 4 to
6 ft, building to 5 to 8 ft in the afternoon. wave detail: e 6 ft
at 8 seconds and n 1 foot at 6 seconds, becoming e 8 ft at
9 seconds and ne 3 ft at 4 seconds. a chance of showers in the
afternoon. 
.mon night...ne winds 25 to 30 kt with gusts up to 35 kt. seas
6 to 9 ft, building to 8 to 11 ft after midnight. wave detail: e
9 ft at 11 seconds and ne 5 ft at 5 seconds, becoming e 9 ft at
11 seconds and n 7 ft at 5 seconds. a chance of showers. 
.tue...ne winds around 30 kt with gusts up to 35 kt. seas 8 to
11 ft. wave detail: e 9 ft at 10 seconds and n 7 ft at 6 seconds.
a chance of showers in the morning. 
.tue night...ne winds 30 to 35 kt with gusts up to 40 kt. seas
8 to 11 ft. wave detail: e 11 ft at 9 seconds and n 8 ft at
6 seconds. 
.wed and wed night...ne winds 30 to 35 kt, becoming 25 to 35 kt.
seas 9 to 13 ft. a chance of showers. 
.thu...n winds 25 to 30 kt with gusts up to 35 kt. seas 8 to
11 ft. a chance of showers. 
.thu night...n winds 25 to 35 kt. seas 7 to 10 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.

$$