fzus51 kbox 200504
cwfbox
expires:202609201800;;745880

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

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


anz231-201800-
cape cod bay-
104 am edt sun sep 20 2026

.rest of tonight...se winds around 5 kt. seas around 2 ft. wave
detail: e 1 foot at 3 seconds and n 1 foot at 5 seconds. 
.sun...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 in the
afternoon. showers likely in the afternoon. 
.sun night...e winds 10 to 15 kt. gusts up to 20 kt after
midnight. seas 2 to 4 ft. wave detail: e 2 ft at 12 seconds and
se 1 foot at 3 seconds. patchy fog. showers. 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: ne 3 ft at 4 seconds and w 3 ft at 4 seconds.
patchy fog in the morning. a chance of showers in the morning
with vsby 1 to 3 nm. 
.mon night through tue night...ne winds 15 to 20 kt with gusts up
to 25 kt. seas 2 to 4 ft. wave detail: n 3 ft at 5 seconds and e
3 ft at 8 seconds. 
.wed and wed night...ne winds 20 to 25 kt with gusts up to 30 kt.
seas 3 to 5 ft. wave detail: e 5 ft at 10 seconds and ne 4 ft at
4 seconds. 
.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 200504
cwfbox
expires:202609201800;;745884

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

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


anz232-201800-
nantucket sound-
104 am edt sun sep 20 2026

.rest of tonight...se winds 5 to 10 kt. seas around 2 ft. wave
detail: nw 1 foot at 4 seconds and e 1 foot at 4 seconds. 
.sun...se winds 10 to 15 kt. seas around 2 ft. wave detail: se
1 foot at 3 seconds and se 1 foot at 7 seconds. patchy fog in the
afternoon. showers likely in the afternoon. 
.sun night...se winds 10 to 15 kt. seas 2 to 3 ft. wave detail: e
2 ft at 3 seconds and s 1 foot at 3 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 around
3 ft. wave detail: ne 3 ft at 4 seconds and nw 3 ft at 5 seconds.
patchy fog in the morning with vsby 1 to 3 nm. 
.mon night and tue...ne winds 15 to 20 kt with gusts up to 25 kt.
seas 2 to 4 ft. wave detail: nw 4 ft at 7 seconds and ne 3 ft at
4 seconds. 
.tue night...ne winds 20 to 25 kt with gusts up to 30 kt. seas
3 to 5 ft. wave detail: e 4 ft at 6 seconds and n 1 foot at
4 seconds. 
.wed...ne winds 20 to 25 kt with gusts up to 30 kt. seas 4 to
6 ft. 
.wed night...ne winds 25 to 30 kt with gusts up to 35 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 35 kt with gusts up to 40 kt. seas
4 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 200504
cwfbox
expires:202609201800;;745885

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

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


anz233-201800-
vineyard sound-
104 am edt sun sep 20 2026

.rest of tonight...se winds 5 to 10 kt. seas 1 foot or less. wave
detail: se 1 foot at 3 seconds and se 1 foot at 8 seconds. 
.sun...se winds 10 to 15 kt. seas around 2 ft. wave detail: se
1 foot at 4 seconds and se 1 foot at 8 seconds. patchy fog in the
afternoon. showers likely in the afternoon. 
.sun night...se winds 10 to 15 kt. seas 2 to 3 ft. wave detail:
se 2 ft at 8 seconds and se 2 ft at 11 seconds. patchy fog.
showers. vsby 1 to 3 nm. 
.mon...ne winds 20 to 25 kt with gusts up to 30 kt. seas 3 to
4 ft. wave detail: ne 2 ft at 3 seconds and se 2 ft at
10 seconds. patchy fog in the morning. a chance of showers in the
morning. 
.mon night and tue...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 nw 2 ft at
5 seconds. 
.tue night...ne winds 15 to 20 kt, increasing to 20 to 25 kt
after midnight. seas 3 to 5 ft. wave detail: ne 3 ft at 4 seconds
and se 1 foot at 8 seconds. 
.wed and wed night...ne winds 20 to 25 kt, increasing to 25 to
30 kt. seas 4 to 6 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 200504
cwfbox
expires:202609201800;;745886

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

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


anz234-201800-
buzzards bay-
104 am edt sun sep 20 2026

.rest of tonight...se winds 5 to 10 kt. seas 1 foot or less. wave
detail: e 1 foot at 2 seconds and se 1 foot at 8 seconds. 
.sun...se winds 10 to 15 kt. gusts up to 20 kt in the afternoon.
seas around 2 ft. wave detail: se 1 foot at 3 seconds and se
1 foot at 8 seconds. patchy fog in the afternoon. showers in the
afternoon. 
.sun night...se winds 10 to 15 kt. seas 2 to 3 ft. wave detail:
se 2 ft at 12 seconds and se 1 foot at 2 seconds. patchy fog.
showers. vsby 1 to 3 nm. 
.mon...ne winds 20 to 25 kt, diminishing to 15 to 20 kt in the
afternoon. seas 3 to 4 ft. wave detail: ne 2 ft at 3 seconds and
se 2 ft at 10 seconds. patchy fog in the morning. a chance of
showers in the morning. 
.mon night through tue night...ne winds 15 to 20 kt with gusts up
to 25 kt. seas 2 to 4 ft. wave detail: ne 2 ft at 3 seconds and e
2 ft at 8 seconds. 
.wed...ne winds 25 to 30 kt. seas 4 to 6 ft. wave detail: se 6 ft
at 10 seconds and ne 4 ft at 4 seconds. 
.wed night...ne winds 20 to 25 kt with gusts up 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 200504
cwfbox
expires:202609201800;;745887

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

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


anz235-201800-
rhode island sound-
104 am edt sun sep 20 2026

.rest of tonight...se winds 5 to 10 kt. seas around 2 ft. wave
detail: se 2 ft at 3 seconds and se 1 foot at 8 seconds. 
.sun...se winds 10 to 15 kt. seas 2 to 3 ft. wave detail: se 2 ft
at 4 seconds and se 2 ft at 8 seconds. patchy fog in the
afternoon. showers in the afternoon.
.sun night...se winds 10 to 15 kt. gusts up to 20 kt after
midnight. seas 2 to 3 ft. wave detail: se 3 ft at 5 seconds and
se 3 ft at 11 seconds. patchy fog. showers. vsby 1 to 3 nm. 
.mon...ne winds 20 to 25 kt. seas 3 to 4 ft. wave detail: ne 3 ft
at 4 seconds and se 2 ft at 10 seconds. patchy fog in the
morning. a chance of showers in the morning. 
.mon night...ne winds 15 to 20 kt. seas 2 to 4 ft. wave detail:
ne 3 ft at 4 seconds and se 2 ft at 8 seconds. 
.tue and tue night...ne winds 20 to 25 kt with gusts up to 30 kt.
seas 4 to 6 ft. wave detail: e 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 30 to 35 kt with gusts up to 40 kt. seas 6 to
9 ft. a chance of showers. 
.thu night...ne winds 30 to 35 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 200504
cwfbox
expires:202609201800;;745890

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

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


anz236-201800-
narragansett bay-
104 am edt sun sep 20 2026

.rest of tonight...se winds 5 to 10 kt. waves 1 foot or less. 
.sun...se winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. waves around 2 ft. a chance of
showers in the morning, then showers in the afternoon. patchy fog
in the afternoon with vsby 1 to 3 nm.
.sun night...se winds 5 to 10 kt, becoming ne 10 to 15 kt with
gusts up to 20 kt after midnight. waves 2 to 3 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. 
.mon night through 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 30 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. gusts up to 40 kt,
decreasing to 30 kt. waves around 3 ft, except 4 to 6 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 200504
cwfbox
expires:202609201800;;745878

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

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


anz250-201800-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
104 am edt sun sep 20 2026

.rest of tonight...se winds around 5 kt. seas around 2 ft. wave
detail: s 1 foot at 2 seconds and ne 1 foot at 5 seconds. 
.sun...se winds 5 to 10 kt. seas 2 to 3 ft. wave detail: s 2 ft
at 3 seconds and e 2 ft at 4 seconds. patchy fog in the
afternoon. showers likely in the afternoon. 
.sun night...e winds 10 to 15 kt. gusts up to 20 kt after
midnight. seas 2 to 3 ft. wave detail: se 3 ft at 4 seconds and
se 2 ft at 11 seconds. patchy fog. showers. 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: sw 4 ft at 4 seconds and ne 4 ft at 5 seconds.
.mon night...ne winds 10 to 15 kt, increasing to 15 to 20 kt
after midnight. seas 2 to 4 ft. wave detail: n 3 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 25 kt.
seas 4 to 5 ft. wave detail: se 5 ft at 8 seconds and n 4 ft at
5 seconds. 
.wed through thu...ne winds 20 to 25 kt with gusts up to 30 kt.
seas 5 to 8 ft. 
.thu night...ne winds 25 to 30 kt with gusts up to 35 kt. seas
7 to 8 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 200504
cwfbox
expires:202609201800;;745881

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

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


anz254-201800-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
104 am edt sun sep 20 2026

.rest of tonight...se winds 5 to 10 kt. seas 2 to 3 ft. wave
detail: e 2 ft at 7 seconds and nw 1 foot at 4 seconds. 
.sun...se winds around 10 kt. seas 2 to 3 ft. wave detail: e 2 ft
at 6 seconds and se 2 ft at 11 seconds. patchy fog in the
afternoon. showers likely in the afternoon. 
.sun night...e winds around 10 kt. seas 2 to 3 ft. wave detail: e
2 ft at 4 seconds and se 2 ft at 10 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 3 to
4 ft. wave detail: ne 4 ft at 4 seconds and nw 3 ft at 4 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. seas 3 to 5 ft. wave detail:
ne 4 ft at 5 seconds and n 4 ft at 5 seconds. 
.tue...ne winds 15 to 20 kt with gusts up to 25 kt. seas 4 to
6 ft. wave detail: e 5 ft at 7 seconds and n 2 ft at 5 seconds. 
.tue night...ne winds 15 to 20 kt, increasing to 20 to 25 kt
after midnight. seas 5 to 8 ft. 
.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
7 to 10 ft. 
.thu...ne winds 25 to 30 kt with gusts up to 35 kt. seas 8 to
11 ft. a chance of showers. 
.thu night...ne winds 25 to 35 kt with gusts up to 40 kt. seas
7 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 200504
cwfbox
expires:202609201800;;745882

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

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


anz255-201800-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
104 am edt sun sep 20 2026

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

$$