fzus51 kbox 202303
cwfbox
expires:202609211200;;787837

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

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


anz231-211200-
cape cod bay-
703 pm edt sun sep 20 2026

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

.tonight...se winds 5 to 10 kt. seas around 2 ft. wave detail: se
1 foot at 3 seconds and se 1 foot at 11 seconds. patchy fog.
rain. vsby 1 to 3 nm after midnight. 
.mon...ne winds 15 to 20 kt with gusts up to 30 kt. seas 2 to
4 ft. wave detail: ne 3 ft at 4 seconds and w 2 ft at 5 seconds.
patchy fog in the morning. a chance of rain in the morning with
vsby 1 to 3 nm. 
.mon night...ne winds 10 to 15 kt with gusts up to 20 kt. seas
2 to 3 ft. wave detail: n 2 ft at 5 seconds and se 1 foot at
10 seconds. 
.tue...ne winds 15 to 20 kt with gusts up to 25 kt. seas 3 to
4 ft. wave detail: n 3 ft at 4 seconds and se 1 foot at
9 seconds. 
.tue night...ne winds 15 to 20 kt with gusts up to 30 kt. seas
3 to 4 ft. wave detail: n 3 ft at 4 seconds and se 1 foot at
18 seconds. 
.wed and wed night...ne winds 20 to 25 kt with gusts up to 35 kt.
seas 4 to 6 ft. wave detail: e 6 ft at 9 seconds and ne 5 ft at
5 seconds. 
.thu...ne winds 25 to 30 kt with gusts up to 40 kt. seas 4 to
6 ft. 
.thu night through fri night...ne winds 25 to 35 kt with gusts up
to 45 kt. seas 5 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 202303
cwfbox
expires:202609211200;;787841

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

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


anz232-211200-
nantucket sound-
703 pm edt sun sep 20 2026

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

.tonight...se winds 10 to 15 kt, diminishing to 5 to 10 kt after
midnight. seas around 2 ft. wave detail: se 2 ft at 4 seconds and
se 1 foot at 11 seconds. patchy fog. rain. 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 s 1 foot at
5 seconds. patchy fog in the morning. rain likely 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: ne 3 ft at 4 seconds and w 1 foot at
5 seconds. 
.tue...ne winds 15 to 20 kt with gusts up to 25 kt. seas 3 to
4 ft. wave detail: ne 3 ft at 4 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 5 ft. wave detail: ne 4 ft at 5 seconds and se 1 foot at
9 seconds. 
.wed...ne winds 20 to 25 kt with gusts up to 30 kt. seas 4 to
6 ft. wave detail: e 5 ft at 5 seconds and se 3 ft at 12 seconds.
.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. 
.thu night through fri night...ne winds 25 to 35 kt with gusts up
to 45 kt. seas 5 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 202303
cwfbox
expires:202609211200;;787842

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

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


anz233-211200-
vineyard sound-
703 pm edt sun sep 20 2026

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

.tonight...se winds 10 to 15 kt, diminishing to 5 to 10 kt after
midnight. seas around 2 ft. wave detail: s 1 foot at 4 seconds
and se 1 foot at 10 seconds. patchy fog. rain. vsby 1 to 3 nm
after midnight. 
.mon...ne winds 15 to 20 kt with gusts up to 30 kt. seas 2 to
4 ft. wave detail: ne 2 ft at 3 seconds and sw 1 foot at
5 seconds. patchy fog in the morning. rain likely in the morning.
.mon night...ne winds around 15 kt with gusts up to 25 kt. seas
2 to 3 ft. wave detail: ne 2 ft at 3 seconds and w 1 foot at
5 seconds. 
.tue...ne winds 15 to 20 kt with gusts up to 25 kt. seas 3 to
4 ft. wave detail: ne 3 ft at 4 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 4 seconds and se 1 foot at
10 seconds. 
.wed and wed night...ne winds 20 to 25 kt with gusts up to 30 kt.
seas 4 to 6 ft. wave detail: ne 4 ft at 4 seconds and se 3 ft at
10 seconds.
.thu...ne winds 25 to 30 kt with gusts up to 40 kt. seas 4 to
6 ft. 
.thu night through fri night...ne winds 25 to 30 kt with gusts up
to 45 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 202303
cwfbox
expires:202609211200;;787843

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

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


anz234-211200-
buzzards bay-
703 pm edt sun sep 20 2026

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

.tonight...se winds 10 to 15 kt, diminishing to 5 to 10 kt after
midnight. seas around 2 ft this evening, then 1 foot or less.
wave detail: se 1 foot at 3 seconds and se 1 foot at 10 seconds,
becoming s 1 foot at 3 seconds and se 1 foot at 9 seconds. patchy
fog. rain. vsby 1 to 3 nm after midnight. 
.mon...ne winds 15 to 20 kt with gusts up to 30 kt. seas 2 to
4 ft. wave detail: ne 2 ft at 3 seconds and sw 1 foot at
5 seconds. patchy fog in the morning. a chance of rain in the
morning. 
.mon night...ne winds 10 to 15 kt with gusts up to 25 kt. seas
2 to 3 ft. wave detail: ne 2 ft at 3 seconds and w 1 foot at
5 seconds. 
.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 se 1 foot at
8 seconds. 
.tue night...ne winds 15 to 20 kt with gusts up to 30 kt. seas
3 to 4 ft. wave detail: ne 3 ft at 4 seconds and se 1 foot at
10 seconds. 
.wed...ne winds 20 to 25 kt with gusts up to 30 kt. seas 4 to
6 ft. wave detail: ne 3 ft at 4 seconds and se 2 ft at
10 seconds. 
.wed night...ne winds 20 to 25 kt with gusts up to 30 kt. seas
3 to 5 ft. 
.thu...ne winds 25 to 30 kt with gusts up to 40 kt. seas 4 to
6 ft. 
.thu night...ne winds 25 to 30 kt with gusts up to 35 kt. seas
3 to 5 ft. a chance of showers. 
.fri and fri night...ne winds 25 to 30 kt with gusts up to 45 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 202303
cwfbox
expires:202609211200;;787844

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

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


anz235-211200-
rhode island sound-
703 pm edt sun sep 20 2026

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

.tonight...se winds 10 to 15 kt. seas around 2 ft. wave detail: s
2 ft at 4 seconds and se 2 ft at 10 seconds. patchy fog. rain
likely. vsby 1 to 3 nm after midnight. 
.mon...ne winds 15 to 20 kt with gusts up to 30 kt. seas 2 to
4 ft. wave detail: ne 3 ft at 6 seconds and se 2 ft at 9 seconds.
patchy fog in the morning. a chance of rain 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 3 ft at 4 seconds and se 2 ft at
8 seconds. 
.tue...ne winds 15 to 20 kt, increasing to 20 to 25 kt in the
afternoon. seas 3 to 5 ft. wave detail: ne 5 ft at 5 seconds and
se 2 ft at 8 seconds. a chance of showers. 
.tue night...ne winds 20 to 25 kt with gusts up to 30 kt. seas
4 to 6 ft. wave detail: ne 5 ft at 5 seconds and se 1 foot at
13 seconds. a chance of showers in the evening. 
.wed and wed night...ne winds 25 to 30 kt with gusts up to 35 kt.
seas 5 to 8 ft. wave detail: se 7 ft at 10 seconds and ne 6 ft at
6 seconds.
.thu...ne winds 25 to 30 kt with gusts up to 35 kt. seas 6 to
9 ft. 
.thu night and fri...ne winds 25 to 35 kt with gusts up to 40 kt.
seas 6 to 9 ft. a chance of showers. 
.fri night...ne winds 25 to 35 kt with gusts up to 40 kt. seas
5 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 202303
cwfbox
expires:202609211200;;787847

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

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


anz236-211200-
narragansett bay-
703 pm edt sun sep 20 2026

.tonight...se winds 5 to 10 kt, becoming e 10 to 15 kt after
midnight. waves around 2 ft. patchy fog. rain likely. vsby 1 to
3 nm. 
.mon...n winds 15 to 20 kt, becoming ne 10 to 15 kt in the
afternoon. gusts up to 25 kt. waves 2 to 3 ft. patchy fog in the
morning. a chance of rain in the morning. 
.mon night...ne winds 10 to 15 kt with gusts up to 20 kt. waves
around 2 ft. 
.tue...ne winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. gusts up to 25 kt. waves 2 to 3 ft. 
.tue night through wed night...ne winds 15 to 20 kt with gusts up
to 30 kt. waves 2 to 3 ft, except 4 to 6 ft at the bay entrance. 
.thu...ne winds 20 to 25 kt with gusts up to 35 kt. waves around
3 ft, except 4 to 6 ft at the bay entrance. 
.thu night through fri night...n winds 25 to 30 kt with gusts up
to 40 kt. waves 2 to 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 202303
cwfbox
expires:202609211200;;787835

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

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


anz250-211200-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
703 pm edt sun sep 20 2026

.tonight...se winds around 10 kt, becoming e with 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. rain. vsby
1 to 3 nm, decreasing to 1 nm or less after midnight. 
.mon...ne winds 15 to 20 kt with gusts up to 25 kt. seas 2 to
4 ft. wave detail: n 4 ft at 6 seconds and se 2 ft at 9 seconds.
patchy fog in the morning. a chance of rain 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. seas 2 to 3 ft, building to 3 to 5 ft after
midnight. wave detail: ne 3 ft at 5 seconds and w 3 ft at
6 seconds, becoming n 4 ft at 5 seconds and se 2 ft at 9 seconds.
.tue...ne winds 15 to 20 kt with gusts up to 25 kt. seas 4 to
5 ft. wave detail: e 5 ft at 7 seconds and n 1 foot at 4 seconds.
.tue night...ne winds 15 to 20 kt with gusts up to 30 kt. seas
4 to 6 ft. wave detail: e 6 ft at 7 seconds and n 1 foot at
4 seconds. 
.wed...ne winds 20 to 25 kt with gusts up to 30 kt. seas 5 to
8 ft. wave detail: e 8 ft at 8 seconds. 
.wed night...ne winds 15 to 20 kt, increasing to 20 to 25 kt
after midnight. gusts up to 30 kt. seas 7 to 10 ft. 
.thu and thu night...ne winds 20 to 25 kt with gusts up to 35 kt.
seas 9 to 12 ft. 
.fri and fri night...ne winds 25 to 30 kt with gusts up to 40 kt.
seas 9 to 12 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 202303
cwfbox
expires:202609211200;;787838

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

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


anz254-211200-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
703 pm edt sun sep 20 2026

...small craft advisory in effect from monday morning through
late monday night...

.tonight...se winds 5 to 10 kt. seas around 2 ft. wave detail: se
2 ft at 4 seconds and se 2 ft at 10 seconds. patchy fog. rain.
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. wave detail: ne 4 ft at 5 seconds and se 2 ft at 9 seconds.
patchy fog in the morning. rain likely 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: ne 4 ft at 6 seconds and se 2 ft at
9 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 1 foot at 3 seconds.
.tue night...ne winds 15 to 20 kt, increasing to 20 to 25 kt
after midnight. gusts up to 30 kt. seas 4 to 6 ft, building to
5 to 8 ft after midnight. wave detail: n 6 ft at 5 seconds and se
2 ft at 14 seconds, becoming ne 7 ft at 7 seconds and n 1 foot at
4 seconds. 
.wed...ne winds 20 to 25 kt with gusts up to 30 kt. seas 7 to
10 ft. wave detail: e 9 ft at 9 seconds. 
.wed night...ne winds 25 to 30 kt. seas 9 to 13 ft. 
.thu...ne winds 25 to 30 kt with gusts up to 35 kt. seas 9 to
13 ft. 
.thu night and fri...ne winds 25 to 30 kt with gusts up to 40 kt.
seas 10 to 14 ft. a chance of showers. 
.fri night...ne winds 25 to 35 kt with gusts up to 40 kt. seas
9 to 13 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 202303
cwfbox
expires:202609211200;;787839

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

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


anz255-211200-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
703 pm edt sun sep 20 2026

...small craft advisory in effect from monday morning through
late monday night...
...gale watch in effect from tuesday afternoon through thursday
afternoon...

.tonight...se winds 5 to 10 kt. seas around 2 ft. wave detail: se
2 ft at 4 seconds and se 2 ft at 10 seconds. patchy fog. rain.
isolated tstms after midnight with vsby 1 to 3 nm. 
.mon...ne winds 15 to 20 kt with gusts up to 30 kt. seas 2 to
4 ft, building to 4 to 5 ft in the afternoon. wave detail: ne
3 ft at 5 seconds and se 2 ft at 9 seconds, becoming ne 4 ft at
5 seconds and se 2 ft at 8 seconds. patchy fog in the morning. a
chance of rain in the morning with vsby 1 to 3 nm. 
.mon night...ne winds 15 to 20 kt with gusts up to 25 kt. seas
4 to 5 ft. wave detail: ne 4 ft at 5 seconds and se 2 ft at
8 seconds. 
.tue...ne winds 20 to 25 kt. seas 4 to 6 ft. wave detail: ne 5 ft
at 5 seconds and se 2 ft at 8 seconds. a chance of showers. 
.tue night...ne winds 20 to 25 kt with gusts up to 30 kt. seas
5 to 8 ft. wave detail: ne 7 ft at 7 seconds and n 1 foot at
4 seconds. a chance of showers in the evening. 
.wed...ne winds 25 to 30 kt with gusts up to 35 kt. seas 7 to
10 ft. wave detail: e 8 ft at 7 seconds and e 8 ft at 9 seconds. 
.wed night...ne winds 25 to 30 kt with gusts up to 35 kt. seas
9 to 12 ft. 
.thu...ne winds around 30 kt with gusts up to 40 kt. seas 9 to
12 ft. 
.thu night and fri...ne winds 30 to 35 kt. gusts up to 45 kt.
seas 9 to 13 ft. a chance of showers. 
.fri night...ne winds 30 to 35 kt with gusts up to 40 kt. seas
8 to 11 ft. a chance of showers.  

winds and seas higher in and near tstms.

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.

$$