fzus51 kbox 170803
cwfbox
expires:202605172100;;700155

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
403 am edt sun may 17 2026

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


anz231-172100-
cape cod bay-
403 am edt sun may 17 2026

...small craft advisory in effect until 5 am edt early this
morning...

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

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 170803
cwfbox
expires:202605172100;;700159

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
403 am edt sun may 17 2026

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


anz232-172100-
nantucket sound-
403 am edt sun may 17 2026

...small craft advisory in effect until 5 am edt early this
morning...

.today...sw winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
4 ft. wave detail: sw 3 ft at 4 seconds and e 1 foot at
9 seconds. 
.tonight...w winds 10 to 15 kt with gusts up to 20 kt, becoming n
5 to 10 kt after midnight. seas 2 to 3 ft. wave detail: sw 2 ft
at 4 seconds and se 1 foot at 9 seconds. 
.mon...e winds 5 to 10 kt. seas around 2 ft. wave detail: e
1 foot at 5 seconds and sw 1 foot at 5 seconds. 
.mon night...s winds 10 to 15 kt. gusts up to 20 kt after
midnight. seas around 2 ft. wave detail: sw 2 ft at 3 seconds and
e 1 foot at 7 seconds. 
.tue and tue night...sw winds 15 to 20 kt with gusts up to 25 kt.
seas 2 to 4 ft. wave detail: sw 3 ft at 4 seconds and se 1 foot
at 9 seconds. 
.wed...sw winds 15 to 20 kt with gusts up to 25 kt. seas 3 to
4 ft. wave detail: sw 3 ft at 4 seconds and se 1 foot at
9 seconds. 
.wed night...w winds 15 to 20 kt with gusts up to 25 kt. seas
2 to 4 ft. a chance of showers. 
.thu and thu night...n winds 10 to 15 kt, diminishing to 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.

$$

fzus51 kbox 170803
cwfbox
expires:202605172100;;700160

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
403 am edt sun may 17 2026

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


anz233-172100-
vineyard sound-
403 am edt sun may 17 2026

...small craft advisory in effect until 5 am edt early this
morning...

.today...sw winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
4 ft. wave detail: sw 4 ft at 7 seconds and se 2 ft at 9 seconds.
.tonight...sw winds 10 to 15 kt with gusts up to 20 kt, becoming
n 5 to 10 kt after midnight. seas 2 to 3 ft. wave detail: sw 3 ft
at 7 seconds and se 2 ft at 9 seconds. 
.mon...e winds 5 to 10 kt, becoming se in the afternoon. seas
around 2 ft. wave detail: sw 2 ft at 7 seconds and e 1 foot at
8 seconds. 
.mon night...s winds 5 to 10 kt, becoming sw 10 to 15 kt after
midnight. seas around 2 ft. wave detail: se 2 ft at 7 seconds. 
.tue and tue night...sw winds 15 to 20 kt with gusts up to 25 kt.
seas 2 to 4 ft. wave detail: sw 4 ft at 6 seconds and se 1 foot
at 9 seconds. 
.wed...sw winds 15 to 20 kt with gusts up to 25 kt. seas 3 to
4 ft. wave detail: sw 4 ft at 7 seconds and se 1 foot at
13 seconds. 
.wed night...w winds 15 to 20 kt with gusts up to 25 kt. seas
2 to 4 ft. a chance of showers. 
.thu and thu night...ne winds 5 to 10 kt, becoming e. 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 170803
cwfbox
expires:202605172100;;700161

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
403 am edt sun may 17 2026

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


anz234-172100-
buzzards bay-
403 am edt sun may 17 2026

...small craft advisory in effect until 5 am edt early this
morning...

.today...sw winds 10 to 15 kt. gusts up to 25 kt this afternoon.
seas 2 to 3 ft. wave detail: sw 3 ft at 6 seconds and se 2 ft at
9 seconds. 
.tonight...sw winds 10 to 15 kt with gusts up to 20 kt, becoming
ne 5 to 10 kt after midnight. seas 2 to 3 ft. wave detail: sw
3 ft at 6 seconds and se 2 ft at 9 seconds. 
.mon...e winds 5 to 10 kt, becoming se in the afternoon. seas
around 2 ft. wave detail: e 1 foot at 2 seconds and sw 1 foot at
7 seconds. 
.mon night...s winds 5 to 10 kt, becoming sw 10 to 15 kt after
midnight. seas around 2 ft. wave detail: sw 2 ft at 4 seconds and
se 1 foot at 7 seconds. 
.tue and tue night...sw winds 15 to 20 kt with gusts up to 25 kt.
seas 2 to 4 ft. wave detail: sw 3 ft at 4 seconds and se 2 ft at
13 seconds. 
.wed...sw winds 15 to 20 kt with gusts up to 30 kt. seas 3 to
4 ft. wave detail: sw 4 ft at 5 seconds and se 1 foot at
13 seconds. 
.wed night...w winds 15 to 20 kt with gusts up to 25 kt. seas
2 to 4 ft. a chance of showers. 
.thu and thu night...ne 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.

$$

fzus51 kbox 170803
cwfbox
expires:202605172100;;700162

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
403 am edt sun may 17 2026

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


anz235-172100-
rhode island sound-
403 am edt sun may 17 2026

...small craft advisory in effect until 8 am edt this morning...

.today...sw winds 10 to 15 kt with gusts up to 25 kt. seas 3 to
5 ft. wave detail: sw 4 ft at 7 seconds and se 3 ft at 8 seconds.
.tonight...sw winds 10 to 15 kt with gusts up to 20 kt, becoming
ne 5 to 10 kt after midnight. seas 2 to 4 ft. wave detail: sw
4 ft at 7 seconds and se 2 ft at 8 seconds. 
.mon...e winds around 10 kt, becoming se in the afternoon. seas
2 to 3 ft. wave detail: s 3 ft at 7 seconds and se 2 ft at
11 seconds. 
.mon night...s winds 5 to 10 kt, becoming sw 10 to 15 kt after
midnight. seas 2 to 3 ft. wave detail: s 3 ft at 8 seconds. 
.tue...sw winds 15 to 20 kt with gusts up to 25 kt. seas 2 to
4 ft. wave detail: sw 4 ft at 6 seconds and se 2 ft at 9 seconds.
.tue night...sw winds 15 to 20 kt with gusts up to 25 kt. seas
3 to 5 ft. wave detail: sw 5 ft at 7 seconds and se 1 foot at
16 seconds. 
.wed...sw winds 15 to 20 kt with gusts up to 25 kt. seas 3 to
5 ft. 
.wed night...w winds 15 to 20 kt with gusts up to 25 kt. seas
3 to 5 ft. a chance of showers. 
.thu and thu night...ne winds 10 to 15 kt, becoming se 5 to
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.

$$

fzus51 kbox 170803
cwfbox
expires:202605172100;;700165

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
403 am edt sun may 17 2026

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


anz236-172100-
narragansett bay-
403 am edt sun may 17 2026

.today...sw winds 5 to 10 kt, increasing to 10 to 15 kt with
gusts up to 25 kt this afternoon. waves 2 to 3 ft. 
.tonight...sw winds 10 to 15 kt with gusts up to 20 kt, becoming
ne 5 to 10 kt after midnight. waves 2 to 3 ft. 
.mon...e winds 5 to 10 kt, becoming se in the afternoon. waves
around 2 ft. 
.mon night...s winds 5 to 10 kt. waves around 2 ft. 
.tue and tue night...sw winds 10 to 15 kt with gusts up to 25 kt.
waves 2 to 3 ft. 
.wed...sw winds 15 to 20 kt with gusts up to 25 kt. waves 2 to
3 ft. a chance of showers. 
.wed night...w winds 10 to 15 kt with gusts up to 20 kt. waves
2 to 3 ft. a chance of showers. 
.thu and thu night...n winds 5 to 10 kt, becoming w. 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 170803
cwfbox
expires:202605172100;;700153

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
403 am edt sun may 17 2026

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


anz250-172100-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
403 am edt sun may 17 2026

...small craft advisory in effect until 8 am edt this morning...

.today...sw winds 10 to 15 kt with gusts up to 20 kt. seas 3 to
5 ft. wave detail: sw 3 ft at 5 seconds and se 3 ft at 9 seconds.
.tonight...w winds 5 to 10 kt with gusts up to 20 kt, becoming ne
after midnight. seas 2 to 3 ft. wave detail: se 3 ft at 8 seconds
and w 2 ft at 3 seconds. 
.mon...e winds 5 to 10 kt, becoming se 10 to 15 kt with gusts up
to 20 kt in the afternoon. seas around 2 ft. wave detail: e 2 ft
at 7 seconds and w 1 foot at 3 seconds. 
.mon night...s winds 10 to 15 kt with gusts up to 20 kt. seas
2 to 3 ft. wave detail: se 2 ft at 3 seconds and se 2 ft at
7 seconds. 
.tue and tue night...sw winds 15 to 20 kt with gusts up to 25 kt.
seas 2 to 4 ft. wave detail: sw 4 ft at 5 seconds and se 2 ft at
9 seconds. 
.wed and wed night...sw winds 15 to 20 kt, becoming w. gusts up
to 25 kt. seas 2 to 4 ft. wave detail: sw 4 ft at 5 seconds and
se 2 ft at 9 seconds. a chance of showers. 
.thu and thu night...n winds 10 to 15 kt with gusts up to 20 kt,
becoming nw 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.

$$

fzus51 kbox 170803
cwfbox
expires:202605172100;;700156

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
403 am edt sun may 17 2026

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


anz254-172100-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
403 am edt sun may 17 2026

...small craft advisory in effect through this afternoon...

.today...sw winds 15 to 20 kt, diminishing to 10 to 15 kt this
afternoon. gusts up to 25 kt. seas 4 to 6 ft. wave detail: sw
5 ft at 6 seconds and se 3 ft at 9 seconds. 
.tonight...w winds 10 to 15 kt with gusts up to 20 kt, becoming n
5 to 10 kt after midnight. seas 2 to 4 ft. wave detail: w 3 ft at
5 seconds and se 3 ft at 8 seconds. 
.mon...e winds 5 to 10 kt, becoming se in the afternoon. seas
2 to 3 ft. wave detail: sw 3 ft at 6 seconds and ne 3 ft at
8 seconds. 
.mon night...s winds 10 to 15 kt. gusts up to 20 kt after
midnight. seas 2 to 3 ft. wave detail: s 3 ft at 4 seconds and se
3 ft at 7 seconds. 
.tue and tue night...sw winds 15 to 20 kt with gusts up to 25 kt.
seas 3 to 5 ft. wave detail: sw 5 ft at 5 seconds and se 2 ft at
9 seconds. 
.wed...sw winds 15 to 20 kt with gusts up to 30 kt. seas 3 to
5 ft. wave detail: sw 5 ft at 6 seconds and se 1 foot at
10 seconds. 
.wed night...w winds 15 to 20 kt with gusts up to 25 kt. seas
3 to 5 ft. a chance of showers. 
.thu and thu night...n winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 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.

$$

fzus51 kbox 170803
cwfbox
expires:202605172100;;700157

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
403 am edt sun may 17 2026

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


anz255-172100-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
403 am edt sun may 17 2026

...small craft advisory in effect through this afternoon...

.today...sw winds 15 to 20 kt, diminishing to 10 to 15 kt this
afternoon. seas 4 to 6 ft. wave detail: sw 5 ft at 7 seconds and
se 3 ft at 9 seconds. 
.tonight...sw winds 10 to 15 kt with gusts up to 20 kt, becoming
n 5 to 10 kt after midnight. seas 3 to 4 ft. wave detail: sw 4 ft
at 7 seconds and se 3 ft at 8 seconds. patchy fog. vsby 1 to 3 nm
in the evening. 
.mon...e winds around 10 kt, becoming se in the afternoon. seas
2 to 4 ft. wave detail: s 4 ft at 7 seconds and se 2 ft at
12 seconds. 
.mon night...sw winds 10 to 15 kt. seas 2 to 3 ft. wave detail: s
3 ft at 7 seconds. 
.tue...sw winds 15 to 20 kt with gusts up to 25 kt. seas 3 to
5 ft. wave detail: sw 5 ft at 6 seconds and se 2 ft at 9 seconds.
.tue night...sw winds around 20 kt with gusts up to 25 kt. seas
4 to 6 ft. wave detail: sw 6 ft at 6 seconds and se 2 ft at
16 seconds. 
.wed...sw winds around 20 kt with gusts up to 25 kt. seas 4 to
6 ft. 
.wed night...w winds 15 to 20 kt with gusts up to 25 kt. seas
4 to 6 ft. a chance of showers. 
.thu and thu night...n winds 10 to 15 kt, becoming ne 5 to 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.

$$