fzus51 kbox 172003
cwfbox
expires:202510180900;;302432

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
403 pm edt fri oct 17 2025

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz231-180900-
cape cod bay-
403 pm edt fri oct 17 2025

...small craft advisory in effect until 8 pm edt this evening...

.tonight...n winds 10 to 15 kt with gusts up to 20 kt. seas 3 to
5 ft. wave detail: ne 5 ft at 8 seconds and n 2 ft at 5 seconds. 
.sat...n winds 10 to 15 kt, diminishing to 5 to 10 kt in the
afternoon. seas 3 to 5 ft. wave detail: ne 3 ft at 8 seconds and
n 2 ft at 4 seconds. 
.sat night...sw winds around 5 kt. seas 2 to 3 ft. wave detail:
ne 3 ft at 8 seconds and n 1 foot at 4 seconds. 
.sun...s winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. seas 2 to 3 ft. wave detail: ne
2 ft at 8 seconds and s 1 foot at 2 seconds. 
.sun night...s winds 15 to 20 kt with gusts up to 25 kt. seas
2 to 3 ft. wave detail: s 2 ft at 3 seconds and e 2 ft at
8 seconds. a chance of showers after midnight. 
.mon...s winds 15 to 20 kt with gusts up to 30 kt. seas 3 to
4 ft. wave detail: se 3 ft at 4 seconds and e 2 ft at 10 seconds.
showers. vsby 1 to 3 nm. 
.mon night...sw winds 15 to 20 kt, becoming w 10 to 15 kt after
midnight. gusts up to 25 kt. seas 2 to 4 ft. a chance of showers.
.tue...sw winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. a chance of showers. 
.tue night and wed...sw winds 10 to 15 kt with gusts up to 20 kt.
seas 2 to 3 ft. showers likely. 
.wed night...w winds around 15 kt with gusts up to 20 kt. seas
2 to 3 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 172003
cwfbox
expires:202510180900;;302436

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
403 pm edt fri oct 17 2025

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz232-180900-
nantucket sound-
403 pm edt fri oct 17 2025

...small craft advisory in effect until 8 pm edt this evening...

.tonight...n winds 15 to 20 kt with gusts up to 25 kt. seas 3 to
5 ft. wave detail: ne 4 ft at 7 seconds and n 2 ft at 4 seconds. 
.sat...n winds 10 to 15 kt, diminishing to 5 to 10 kt in the
afternoon. seas 3 to 5 ft. wave detail: ne 4 ft at 11 seconds and
n 2 ft at 3 seconds. 
.sat night...nw winds around 5 kt, becoming sw around 5 kt after
midnight. seas 2 to 4 ft. wave detail: e 3 ft at 11 seconds and
nw 1 foot at 3 seconds. 
.sun...s winds 10 to 15 kt. gusts up to 20 kt in the afternoon.
seas 2 to 4 ft. wave detail: e 3 ft at 11 seconds and s 2 ft at
4 seconds. 
.sun night...s winds 15 to 20 kt, becoming se 20 to 25 kt after
midnight. seas 3 to 5 ft. wave detail: se 4 ft at 5 seconds and e
2 ft at 11 seconds. a chance of showers after midnight. 
.mon...s winds 20 to 25 kt with gusts up to 30 kt. seas 3 to
5 ft. wave detail: se 5 ft at 5 seconds and e 2 ft at 10 seconds.
showers. vsby 1 to 3 nm. 
.mon night...sw winds 20 to 25 kt, becoming w 15 to 20 kt after
midnight. seas 3 to 5 ft. a chance of showers. 
.tue...sw winds 15 to 20 kt. seas 2 to 4 ft. 
.tue night and wed...sw winds 15 to 20 kt with gusts up to 25 kt.
seas 2 to 4 ft. showers likely. 
.wed night...w winds 20 to 25 kt. seas 3 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 172003
cwfbox
expires:202510180900;;302437

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
403 pm edt fri oct 17 2025

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz233-180900-
vineyard sound-
403 pm edt fri oct 17 2025

.tonight...n winds 10 to 15 kt. gusts up to 20 kt this evening.
seas around 2 ft. wave detail: ne 2 ft at 7 seconds and nw 1 foot
at 3 seconds. 
.sat...n winds around 10 kt, diminishing to around 5 kt in the
afternoon. seas around 2 ft. wave detail: e 2 ft at 12 seconds
and nw 1 foot at 2 seconds. 
.sat night...s winds 5 to 10 kt. seas around 2 ft. wave detail: e
2 ft at 12 seconds and w 1 foot at 2 seconds. 
.sun...s winds 10 to 15 kt. gusts up to 20 kt in the afternoon.
seas 2 to 3 ft. wave detail: s 2 ft at 4 seconds and e 2 ft at
12 seconds. 
.sun night...s winds 15 to 20 kt, becoming se 20 to 25 kt after
midnight. seas 3 to 5 ft. wave detail: s 4 ft at 5 seconds and e
1 foot at 12 seconds. a chance of showers after midnight. 
.mon...s winds 20 to 25 kt with gusts up to 30 kt. seas 4 to
6 ft. wave detail: s 5 ft at 6 seconds and e 1 foot at
11 seconds. showers. vsby 1 to 3 nm. 
.mon night...w winds 15 to 20 kt with gusts up to 25 kt. seas
3 to 5 ft. a chance of showers. 
.tue...sw winds 15 to 20 kt with gusts up to 25 kt. seas 2 to
4 ft. 
.tue night and wed...sw winds 15 to 20 kt with gusts up to 25 kt.
seas 2 to 4 ft. showers likely. 
.wed night...w winds 15 to 20 kt with gusts up to 25 kt. seas
3 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 172003
cwfbox
expires:202510180900;;302438

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
403 pm edt fri oct 17 2025

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz234-180900-
buzzards bay-
403 pm edt fri oct 17 2025

.tonight...n winds 10 to 15 kt. gusts up to 20 kt this evening.
seas around 2 ft this evening, then 1 foot or less. wave detail:
ne 2 ft at 6 seconds and n 1 foot at 3 seconds, becoming n 1 foot
at 2 seconds and ne 1 foot at 11 seconds. 
.sat...n winds 5 to 10 kt. seas 1 foot or less. wave detail: n
1 foot at 2 seconds and e 1 foot at 11 seconds. 
.sat night...s winds 5 to 10 kt. seas 1 foot or less. wave
detail: e 1 foot at 11 seconds. 
.sun...s winds 10 to 15 kt. gusts up to 25 kt in the afternoon.
seas 2 to 3 ft. wave detail: s 2 ft at 4 seconds and e 2 ft at
11 seconds. 
.sun night...s winds 15 to 20 kt, becoming se 20 to 25 kt after
midnight. seas 3 to 4 ft. wave detail: s 4 ft at 5 seconds and e
2 ft at 11 seconds. a chance of showers after midnight. 
.mon...s winds 20 to 25 kt with gusts up to 30 kt. seas 3 to
5 ft. wave detail: sw 5 ft at 6 seconds and e 1 foot at
11 seconds. showers. vsby 1 to 3 nm. 
.mon night...w winds 15 to 20 kt with gusts up to 25 kt. seas
2 to 4 ft. a chance of showers. 
.tue...sw winds 15 to 20 kt with gusts up to 25 kt. seas 2 to
4 ft. 
.tue night and wed...sw winds 15 to 20 kt with gusts up to 25 kt.
seas 2 to 4 ft. showers likely. 
.wed night...w winds 15 to 20 kt with 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 172003
cwfbox
expires:202510180900;;302439

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
403 pm edt fri oct 17 2025

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz235-180900-
rhode island sound-
403 pm edt fri oct 17 2025

.tonight...n winds 10 to 15 kt. seas around 2 ft. wave detail: nw
2 ft at 3 seconds and ne 2 ft at 8 seconds. 
.sat...n winds 5 to 10 kt. seas 2 to 3 ft. wave detail: e 2 ft at
13 seconds and n 1 foot at 3 seconds. 
.sat night...sw winds 5 to 10 kt. seas around 2 ft. wave detail:
e 2 ft at 12 seconds. 
.sun...s winds 10 to 15 kt. gusts up to 20 kt in the afternoon.
seas 2 to 4 ft. wave detail: s 3 ft at 4 seconds and e 2 ft at
12 seconds. 
.sun night...s winds 15 to 20 kt, increasing to 20 to 25 kt after
midnight. seas 3 to 5 ft, building to 5 to 7 ft after midnight.
wave detail: s 5 ft at 5 seconds and e 1 foot at 12 seconds,
becoming s 7 ft at 6 seconds and e 1 foot at 12 seconds. a chance
of showers after midnight. 
.mon...s winds 20 to 25 kt with gusts up to 30 kt. seas 5 to
7 ft. wave detail: s 7 ft at 7 seconds and e 1 foot at
11 seconds. showers in the morning. a chance of showers in the
afternoon. vsby 1 to 3 nm. 
.mon night...w winds 15 to 20 kt with gusts up to 25 kt. seas
4 to 6 ft. a chance of showers. 
.tue...sw winds 15 to 20 kt with gusts up to 25 kt. seas 3 to
4 ft. 
.tue night and wed...sw winds 15 to 20 kt with gusts up to 25 kt.
seas 3 to 5 ft. showers likely. 
.wed night...w winds 15 to 20 kt with gusts up to 25 kt. seas
3 to 5 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 172003
cwfbox
expires:202510180900;;302442

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
403 pm edt fri oct 17 2025

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz236-180900-
narragansett bay-
403 pm edt fri oct 17 2025

.tonight...n winds 5 to 10 kt. waves 1 foot or less. 
.sat...n winds 5 to 10 kt. waves around 2 ft. 
.sat night...sw winds around 5 kt. waves 1 foot or less. 
.sun...s winds 10 to 15 kt. gusts up to 20 kt in the afternoon.
waves 2 to 3 ft. 
.sun night...s winds 15 to 20 kt with gusts up to 25 kt. waves
3 to 5 ft. a chance of showers after midnight. 
.mon...s winds 15 to 20 kt with gusts up to 30 kt. waves 3 to
5 ft. showers. vsby 1 to 3 nm. 
.mon night...w winds 10 to 15 kt. gusts up to 25 kt in the
evening. waves 2 to 4 ft. a chance of showers. 
.tue...sw winds 10 to 15 kt with gusts up to 25 kt. waves 2 to
3 ft. 
.tue night and wed...sw winds 10 to 15 kt with gusts up to 20 kt.
waves 2 to 3 ft. showers likely. 
.wed night...w winds 10 to 15 kt with gusts up to 20 kt. waves
2 to 3 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 172003
cwfbox
expires:202510180900;;302430

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
403 pm edt fri oct 17 2025

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz250-180900-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
403 pm edt fri oct 17 2025

...small craft advisory in effect through sunday morning...

.tonight...n winds 10 to 15 kt with gusts up to 20 kt. seas 5 to
8 ft. wave detail: ne 6 ft at 10 seconds. 
.sat...n winds 10 to 15 kt with gusts up to 20 kt, diminishing to
5 to 10 kt in the afternoon. seas 5 to 7 ft. wave detail: e 6 ft
at 10 seconds. 
.sat night...s winds around 5 kt, becoming sw after midnight.
seas 4 to 6 ft. wave detail: e 5 ft at 11 seconds. 
.sun...s winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. seas 4 to 5 ft. wave detail: e 5 ft
at 11 seconds and s 3 ft at 3 seconds. 
.sun night...s winds 15 to 20 kt with gusts up to 30 kt. seas
4 to 6 ft. wave detail: se 5 ft at 5 seconds and e 4 ft at
10 seconds. a chance of showers after midnight. 
.mon...se winds 20 to 25 kt with gusts up to 30 kt. seas 4 to
6 ft. wave detail: se 6 ft at 5 seconds and e 3 ft at 10 seconds.
a chance of showers in the morning, then showers in the
afternoon. 
.mon night...s winds 15 to 20 kt, becoming w after midnight.
gusts up to 25 kt. seas 3 to 5 ft. a chance of showers. 
.tue...sw winds 10 to 15 kt with gusts up to 20 kt. seas 3 to
4 ft. a chance of showers. 
.tue night and wed...s winds 10 to 15 kt with gusts up to 20 kt.
seas 2 to 3 ft. showers likely. vsby 1 to 3 nm. 
.wed night...w winds 15 to 20 kt with gusts up to 25 kt. seas
3 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 172003
cwfbox
expires:202510180900;;302433

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
403 pm edt fri oct 17 2025

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz254-180900-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
403 pm edt fri oct 17 2025

...small craft advisory in effect through sunday morning...

.tonight...n winds 15 to 20 kt with gusts up to 25 kt. seas 6 to
9 ft. wave detail: ne 8 ft at 10 seconds and nw 1 foot at
4 seconds. 
.sat...n winds 10 to 15 kt. gusts up to 20 kt in the morning.
seas 6 to 9 ft. wave detail: ne 7 ft at 11 seconds and nw 1 foot
at 3 seconds. 
.sat night...nw winds 5 to 10 kt, becoming w after midnight. seas
5 to 7 ft. wave detail: e 6 ft at 11 seconds. 
.sun...s winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. seas 4 to 6 ft. wave detail: e 6 ft
at 11 seconds. 
.sun night...s winds 10 to 15 kt, becoming se 15 to 20 kt after
midnight. gusts up to 25 kt. seas 4 to 6 ft. wave detail: s 4 ft
at 5 seconds and e 4 ft at 10 seconds. a chance of showers after
midnight. 
.mon...s winds around 20 kt with gusts up to 30 kt. seas 5 to
7 ft. wave detail: se 5 ft at 5 seconds and e 3 ft at 10 seconds.
a chance of showers in the morning, then showers in the
afternoon. 
.mon night...sw winds 15 to 20 kt with gusts up to 25 kt. seas
4 to 6 ft. a chance of showers. 
.tue and tue night...sw winds 10 to 15 kt with gusts up to 20 kt.
seas 3 to 5 ft. a chance of showers. 
.wed...sw winds 15 to 20 kt. seas 3 to 5 ft. showers likely. vsby
1 to 3 nm. 
.wed night...w winds 15 to 20 kt with gusts up to 25 kt. seas
3 to 5 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 172003
cwfbox
expires:202510180900;;302434

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
403 pm edt fri oct 17 2025

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz255-180900-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
403 pm edt fri oct 17 2025

...small craft advisory in effect through sunday morning...

.tonight...n winds 20 to 25 kt, diminishing to 15 to 20 kt after
midnight. seas 5 to 7 ft, except 8 to 11 ft s and e of nantucket.
wave detail: ne 6 ft at 10 seconds and nw 3 ft at 5 seconds. 
.sat...n winds 10 to 15 kt. gusts up to 20 kt in the morning.
seas 5 to 7 ft. wave detail: e 6 ft at 11 seconds and nw 3 ft at
4 seconds. 
.sat night...nw winds around 5 kt, becoming sw after midnight.
seas 4 to 6 ft. wave detail: e 5 ft at 11 seconds. 
.sun...s winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. seas 3 to 5 ft. wave detail: e 5 ft
at 11 seconds and s 3 ft at 3 seconds. 
.sun night...s winds 15 to 20 kt, becoming se 20 to 25 kt after
midnight. seas 5 to 7 ft. wave detail: s 6 ft at 5 seconds and e
4 ft at 11 seconds. a chance of showers after midnight. 
.mon...s winds 20 to 25 kt with gusts up to 30 kt. seas 6 to
8 ft. wave detail: s 8 ft at 7 seconds and e 3 ft at 10 seconds.
showers. vsby 1 to 3 nm. 
.mon night...sw winds 20 to 25 kt, becoming w 15 to 20 kt after
midnight. seas 5 to 7 ft. a chance of showers. 
.tue...sw winds 15 to 20 kt. seas 4 to 6 ft. 
.tue night...s winds 15 to 20 kt. seas 4 to 5 ft. a chance of
showers. 
.wed...sw winds 20 to 25 kt. seas 4 to 6 ft. showers likely. 
.wed night...w winds 20 to 25 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.

$$