fzus51 kbox 200804
cwfbox
expires:202609202100;;754309

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
403 am edt sun sep 20 2026

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


anz231-202100-
cape cod bay-
403 am edt sun sep 20 2026

.today...se winds 5 to 10 kt. seas around 2 ft. wave detail: se
1 foot at 3 seconds and nw 1 foot at 4 seconds. patchy fog this
afternoon. showers this afternoon. 
.tonight...e winds 10 to 15 kt. gusts up to 20 kt after midnight.
seas around 2 ft. wave detail: s 1 foot at 3 seconds and e 1 foot
at 11 seconds. patchy fog. showers likely. vsby 1 to 3 nm. 
.mon...ne winds 15 to 20 kt with gusts up to 25 kt. seas 2 to
4 ft. wave detail: n 3 ft at 4 seconds and e 1 foot at
10 seconds. patchy fog in the morning. a chance of showers in the
morning with vsby 1 to 3 nm. 
.mon night...ne winds 10 to 15 kt, increasing to 15 to 20 kt
after midnight. gusts up to 25 kt. seas 2 to 4 ft. wave detail: n
3 ft at 5 seconds and se 1 foot at 9 seconds. 
.tue and tue night...ne winds 20 to 25 kt with gusts up to 30 kt.
seas 3 to 4 ft. wave detail: ne 4 ft at 4 seconds and se 1 foot
at 9 seconds. 
.wed and wed night...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
9 seconds. 
.thu...ne winds 25 to 30 kt with gusts up to 40 kt. seas 4 to
6 ft. a chance of showers. 
.thu night...ne winds 25 to 30 kt with gusts up to 40 kt. seas
5 to 7 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 200804
cwfbox
expires:202609202100;;754313

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
403 am edt sun sep 20 2026

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


anz232-202100-
nantucket sound-
403 am edt sun sep 20 2026

...small craft advisory in effect from monday morning through
monday evening...

.today...se winds 10 to 15 kt. seas around 2 ft. wave detail: se
2 ft at 3 seconds and se 1 foot at 10 seconds. patchy fog this
afternoon. showers likely this afternoon. 
.tonight...se winds 10 to 15 kt. seas around 2 ft. wave detail:
se 2 ft at 3 seconds and se 1 foot at 11 seconds. patchy fog.
showers. vsby 1 to 3 nm after midnight. 
.mon...ne winds 15 to 20 kt with gusts up to 25 kt. seas 2 to
3 ft. wave detail: ne 3 ft at 4 seconds and nw 2 ft at 6 seconds.
patchy fog in the morning. a chance of showers in the morning
with vsby 1 to 3 nm. 
.mon night...ne winds 15 to 20 kt with gusts up to 25 kt. seas
2 to 3 ft. wave detail: n 3 ft at 5 seconds and se 1 foot at
8 seconds. 
.tue and tue night...ne winds 25 to 30 kt. seas 3 to 4 ft. wave
detail: ne 4 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: e 6 ft at 5 seconds and se 5 ft at 9 seconds. 
.wed night...ne winds 25 to 30 kt with gusts up to 40 kt. seas
5 to 7 ft. 
.thu...ne winds 25 to 30 kt with gusts up to 40 kt. seas 5 to
7 ft. a chance of showers. 
.thu night...ne winds 30 to 40 kt with gusts up to 45 kt. seas
6 to 9 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 200804
cwfbox
expires:202609202100;;754314

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
403 am edt sun sep 20 2026

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


anz233-202100-
vineyard sound-
403 am edt sun sep 20 2026

...small craft advisory in effect from monday morning through
monday evening...

.today...se winds 10 to 15 kt. seas around 2 ft. wave detail: se
1 foot at 4 seconds and se 1 foot at 12 seconds. a slight chance
of showers this morning, then showers this afternoon. patchy fog
this afternoon. 
.tonight...se winds 10 to 15 kt. seas around 2 ft. wave detail: s
1 foot at 4 seconds and se 1 foot at 10 seconds. patchy fog.
showers likely. vsby 1 to 3 nm. 
.mon...ne winds 20 to 25 kt. seas 2 to 4 ft. wave detail: ne 3 ft
at 3 seconds and sw 1 foot at 5 seconds. patchy fog in the
morning. a chance of showers in the morning. 
.mon night...ne winds 15 to 20 kt with gusts up to 25 kt. seas
2 to 4 ft. wave detail: ne 2 ft at 4 seconds and w 1 foot at
5 seconds. 
.tue...ne winds 20 to 25 kt with gusts up to 30 kt. seas 3 to
4 ft. wave detail: ne 3 ft at 5 seconds and se 1 foot at
8 seconds. a chance of showers in the afternoon. 
.tue night...ne winds 20 to 25 kt with gusts up to 30 kt. seas
3 to 4 ft. wave detail: ne 3 ft at 5 seconds and se 2 ft at
8 seconds. 
.wed and wed night...ne winds 25 to 30 kt with gusts up to 35 kt.
seas 4 to 6 ft. 
.thu and thu night...ne winds 25 to 30 kt with gusts up to 40 kt.
seas 5 to 7 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 200804
cwfbox
expires:202609202100;;754315

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
403 am edt sun sep 20 2026

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


anz234-202100-
buzzards bay-
403 am edt sun sep 20 2026

...small craft advisory in effect from monday morning through
monday evening...

.today...se winds 10 to 15 kt. gusts up to 20 kt this afternoon.
seas around 2 ft. wave detail: se 1 foot at 3 seconds and se
1 foot at 10 seconds. a slight chance of showers this morning,
then showers this afternoon. patchy fog this afternoon. 
.tonight...se winds 10 to 15 kt. seas around 2 ft. wave detail: s
1 foot at 3 seconds and se 1 foot at 9 seconds. patchy fog.
showers likely. vsby 1 to 3 nm. 
.mon...ne winds 20 to 25 kt, diminishing to 15 to 20 kt in the
afternoon. seas 2 to 4 ft. wave detail: ne 3 ft at 4 seconds and
sw 1 foot at 5 seconds. patchy fog in the morning. a chance of
showers in the morning. 
.mon night...ne winds 10 to 15 kt, increasing to 15 to 20 kt
after midnight. gusts up to 25 kt. seas 2 to 3 ft. wave detail:
ne 2 ft at 4 seconds and nw 2 ft at 5 seconds. 
.tue and tue night...ne winds 20 to 25 kt with gusts up to 30 kt.
seas 3 to 4 ft. wave detail: n 3 ft at 5 seconds and se 1 foot at
8 seconds. 
.wed...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 4 ft at 11 seconds.
.wed night...ne winds 25 to 30 kt. seas 3 to 5 ft. 
.thu and thu night...ne winds 25 to 30 kt with gusts up to 40 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 200804
cwfbox
expires:202609202100;;754316

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
403 am edt sun sep 20 2026

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


anz235-202100-
rhode island sound-
403 am edt sun sep 20 2026

...small craft advisory in effect from monday morning through
monday evening...

.today...se winds 10 to 15 kt. seas around 2 ft. wave detail: se
2 ft at 5 seconds and se 1 foot at 8 seconds. a chance of showers
this morning, then showers this afternoon. patchy fog this
afternoon. 
.tonight...se winds 10 to 15 kt. gusts up to 20 kt after
midnight. seas 2 to 3 ft. wave detail: s 2 ft at 4 seconds and se
2 ft at 10 seconds. patchy fog. showers. vsby 1 to 3 nm. 
.mon...ne winds 20 to 25 kt. seas 3 to 4 ft. wave detail: ne 4 ft
at 4 seconds and se 2 ft at 9 seconds. patchy fog in the morning.
a chance of showers in the morning. 
.mon night...ne winds 15 to 20 kt with gusts up to 25 kt. seas
2 to 4 ft. wave detail: ne 4 ft at 4 seconds and se 3 ft at
8 seconds. 
.tue...ne winds 20 to 25 kt with gusts up to 30 kt. seas 3 to
5 ft. wave detail: e 5 ft at 7 seconds and n 2 ft at 5 seconds. a
chance of showers in the afternoon. 
.tue night...ne winds 20 to 25 kt, increasing to 25 to 30 kt
after midnight. seas 3 to 5 ft. wave detail: ne 5 ft at
6 seconds. 
.wed...ne winds 25 to 30 kt with gusts up to 35 kt. seas 5 to
7 ft. 
.wed night...ne winds 25 to 30 kt with gusts up to 35 kt. seas
6 to 9 ft. 
.thu...ne winds 25 to 30 kt with gusts up to 40 kt. seas 7 to
10 ft. a chance of showers. 
.thu night...ne winds 30 to 35 kt with gusts up to 40 kt. seas
8 to 11 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 200804
cwfbox
expires:202609202100;;754319

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
403 am edt sun sep 20 2026

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


anz236-202100-
narragansett bay-
403 am edt sun sep 20 2026

.today...se winds 5 to 10 kt, increasing to 10 to 15 kt with
gusts up to 20 kt this afternoon. waves around 2 ft. a chance of
showers this morning, then showers this afternoon. patchy fog
this afternoon with vsby 1 to 3 nm. 
.tonight...se winds 5 to 10 kt, becoming ne 10 to 15 kt after
midnight. waves around 2 ft. patchy fog. showers. vsby 1 to 3 nm.
.mon...ne winds 15 to 20 kt with gusts up to 25 kt. waves 2 to
3 ft. a chance of showers in the morning. 
.mon night...ne winds 10 to 15 kt with gusts up to 20 kt. waves
around 2 ft. 
.tue and tue night...ne winds 15 to 20 kt with gusts up to 25 kt.
waves 2 to 3 ft. 
.wed and wed night...ne winds 20 to 25 kt with gusts up to 35 kt.
waves 2 to 3 ft, except 4 to 6 ft at the bay entrance. 
.thu and thu night...ne winds 20 to 25 kt, increasing to 25 to
30 kt. waves around 3 ft, except 5 to 7 ft at the bay entrance. 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 200804
cwfbox
expires:202609202100;;754307

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
403 am edt sun sep 20 2026

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


anz250-202100-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
403 am edt sun sep 20 2026

.today...se winds 5 to 10 kt. seas 2 to 3 ft. wave detail: e 2 ft
at 4 seconds and se 2 ft at 10 seconds. patchy fog this
afternoon. showers likely this afternoon. 
.tonight...e winds 10 to 15 kt. gusts up to 20 kt after midnight.
seas 2 to 3 ft. wave detail: s 2 ft at 4 seconds and se 1 foot at
10 seconds. patchy fog. showers likely. vsby 1 to 3 nm. 
.mon...ne winds 15 to 20 kt with gusts up to 25 kt. seas 3 to
4 ft. wave detail: ne 4 ft at 4 seconds and se 2 ft at 9 seconds.
.mon night...ne winds 10 to 15 kt, increasing to 15 to 20 kt
after midnight. gusts up to 25 kt. seas 2 to 4 ft. wave detail:
ne 4 ft at 5 seconds and se 2 ft at 9 seconds. 
.tue and tue night...ne winds 15 to 20 kt with gusts up to 30 kt.
seas 3 to 5 ft. wave detail: e 5 ft at 7 seconds and e 5 ft at
14 seconds. 
.wed...ne winds 20 to 25 kt with gusts up to 30 kt. seas 5 to
7 ft. wave detail: e 7 ft at 9 seconds. 
.wed night...ne winds 20 to 25 kt with gusts up to 30 kt. seas
6 to 9 ft. 
.thu...ne winds 25 to 30 kt with gusts up to 40 kt. seas 8 to
11 ft. 
.thu night...ne winds 25 to 30 kt with gusts up to 40 kt. seas
10 to 14 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 200804
cwfbox
expires:202609202100;;754310

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
403 am edt sun sep 20 2026

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


anz254-202100-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
403 am edt sun sep 20 2026

...small craft advisory in effect from monday morning through
monday evening...

.today...se winds around 10 kt. seas 2 to 3 ft. wave detail: e
2 ft at 5 seconds and se 2 ft at 10 seconds. patchy fog this
afternoon. showers likely this afternoon. 
.tonight...e winds around 10 kt. seas 2 to 3 ft. wave detail: se
2 ft at 4 seconds and se 2 ft at 10 seconds. patchy fog. showers
likely. vsby 1 to 3 nm after midnight. 
.mon...ne winds 15 to 20 kt with gusts up to 25 kt. seas 2 to
4 ft, building to 4 to 5 ft in the afternoon. wave detail: ne
3 ft at 4 seconds and se 2 ft at 9 seconds, becoming n 4 ft at
6 seconds and se 2 ft at 8 seconds. patchy fog in the morning. a
chance of showers in the morning with vsby 1 to 3 nm. 
.mon night...ne winds 15 to 20 kt with gusts up to 25 kt. seas
3 to 5 ft. wave detail: n 4 ft at 5 seconds and se 2 ft at
8 seconds. 
.tue...ne winds 15 to 20 kt with gusts up to 25 kt. seas 3 to
5 ft. wave detail: ne 5 ft at 6 seconds and se 2 ft at
15 seconds. 
.tue night...ne winds 20 to 25 kt with gusts up to 30 kt. seas
4 to 6 ft. wave detail: e 6 ft at 8 seconds and e 6 ft at
14 seconds. 
.wed...ne winds 20 to 25 kt with gusts up to 30 kt. seas 6 to
9 ft. 
.wed night...ne winds 25 to 30 kt with gusts up to 35 kt. seas
8 to 11 ft. 
.thu...ne winds 25 to 30 kt with gusts up to 40 kt. seas 10 to
14 ft. a chance of showers. 
.thu night...ne winds 25 to 35 kt with gusts up to 40 kt. seas
12 to 16 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 200804
cwfbox
expires:202609202100;;754311

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
403 am edt sun sep 20 2026

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


anz255-202100-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
403 am edt sun sep 20 2026

...small craft advisory in effect from monday morning through
monday evening...

.today...se winds 10 to 15 kt. seas 2 to 3 ft. wave detail: e
2 ft at 4 seconds and se 1 foot at 9 seconds. showers likely this
afternoon. 
.tonight...se winds around 10 kt. seas 2 to 3 ft. wave detail: sw
2 ft at 4 seconds and e 2 ft at 4 seconds. patchy fog. showers.
vsby 1 to 3 nm after midnight. 
.mon...ne winds 20 to 25 kt. seas 2 to 4 ft, building to 4 to
5 ft in the afternoon. wave detail: ne 4 ft at 5 seconds and se
2 ft at 9 seconds, becoming ne 4 ft at 5 seconds and nw 2 ft at
6 seconds. a chance of showers. patchy fog in the morning with
vsby 1 to 3 nm. 
.mon night...ne winds 15 to 20 kt, increasing to 20 to 25 kt
after midnight. seas 3 to 5 ft. wave detail: n 4 ft at 5 seconds
and se 2 ft at 8 seconds. 
.tue...ne winds 20 to 25 kt with gusts up to 30 kt. seas 4 to
5 ft. wave detail: ne 5 ft at 6 seconds and se 2 ft at
15 seconds. a chance of showers in the afternoon. 
.tue night...ne winds 25 to 30 kt. seas 5 to 7 ft. wave detail:
ne 7 ft at 5 seconds and e 5 ft at 10 seconds. a chance of
showers in the evening. 
.wed...ne winds 25 to 30 kt with gusts up to 35 kt. seas 6 to
9 ft. 
.wed night...ne winds 25 to 30 kt with gusts up to 35 kt. seas
8 to 11 ft. 
.thu and thu night...ne winds 30 to 40 kt. seas 10 to 14 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.

$$