fzus51 kbox 271405
cwfbox
expires:202604280300;;613369

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1004 am edt mon apr 27 2026

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


anz231-280300-
cape cod bay-
1004 am edt mon apr 27 2026

.this afternoon...ne winds 5 to 10 kt. seas around 2 ft. wave
detail: n 1 foot at 2 seconds and e 1 foot at 6 seconds. 
.tonight...ne winds 5 to 10 kt. gusts up to 20 kt after midnight.
seas around 2 ft. wave detail: se 2 ft at 7 seconds and ne 1 foot
at 3 seconds. 
.tue...ne winds around 10 kt. gusts up to 20 kt in the afternoon.
seas 2 to 3 ft. wave detail: se 3 ft at 9 seconds and e 2 ft at
12 seconds. 
.tue night...n winds around 10 kt. gusts up to 20 kt in the
evening. seas 2 to 3 ft. wave detail: n 2 ft at 3 seconds and e
2 ft at 11 seconds. 
.wed...ne winds 5 to 10 kt. seas 2 to 3 ft. wave detail: e 2 ft
at 11 seconds and n 1 foot at 3 seconds. 
.wed night...e winds 5 to 10 kt, becoming se 10 to 15 kt after
midnight. seas 2 to 3 ft. wave detail: ne 2 ft at 10 seconds and
ne 1 foot at 2 seconds. a chance of showers. 
.thu and thu night...se winds 10 to 15 kt, becoming w 15 to
20 kt. seas 2 to 3 ft. showers.
.fri and fri night...w winds 15 to 20 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 271405
cwfbox
expires:202604280300;;613373

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1004 am edt mon apr 27 2026

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


anz232-280300-
nantucket sound-
1004 am edt mon apr 27 2026

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

.this afternoon...ne winds 10 to 15 kt with gusts up to 25 kt.
seas 2 to 3 ft. wave detail: n 2 ft at 3 seconds and s 1 foot at
7 seconds. 
.tonight...ne winds around 10 kt with gusts up to 20 kt. seas
2 to 4 ft. wave detail: ne 2 ft at 4 seconds and e 2 ft at
12 seconds. 
.tue...ne winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
4 ft. wave detail: ne 2 ft at 4 seconds and nw 2 ft at 4 seconds.
.tue night...n winds 10 to 15 kt with gusts up to 20 kt. seas
2 to 4 ft. wave detail: e 3 ft at 9 seconds and n 2 ft at
4 seconds. 
.wed...ne winds around 10 kt. seas 2 to 4 ft. wave detail: n 2 ft
at 6 seconds and e 2 ft at 10 seconds. 
.wed night...e winds 10 to 15 kt. seas 2 to 4 ft. wave detail: e
2 ft at 5 seconds and e 2 ft at 10 seconds. a chance of showers
after midnight. 
.thu and thu night...se winds around 15 kt, becoming w. seas 2 to
4 ft. showers.
.fri and fri night...w winds 15 to 20 kt with gusts up to 25 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 271405
cwfbox
expires:202604280300;;613374

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1004 am edt mon apr 27 2026

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


anz233-280300-
vineyard sound-
1004 am edt mon apr 27 2026

.this afternoon...ne winds around 10 kt with gusts up to 20 kt.
seas 2 to 3 ft. wave detail: n 1 foot at 3 seconds and s 1 foot
at 7 seconds. 
.tonight...ne winds 5 to 10 kt. seas 2 to 3 ft. wave detail: se
2 ft at 11 seconds and n 1 foot at 3 seconds. 
.tue...ne winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. wave detail: nw 2 ft at 3 seconds and ne 2 ft at 3 seconds.
.tue night...ne winds 10 to 15 kt. gusts up to 20 kt in the
evening. seas 2 to 3 ft. wave detail: ne 2 ft at 3 seconds and n
2 ft at 4 seconds. 
.wed...ne winds around 10 kt, becoming e in the afternoon. seas
2 to 3 ft. wave detail: s 2 ft at 8 seconds and n 1 foot at
3 seconds. 
.wed night...se winds 10 to 15 kt. seas 2 to 3 ft. wave detail: n
1 foot at 2 seconds and e 1 foot at 4 seconds. showers likely
after midnight. 
.thu...se winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. showers.
.thu night...w winds 15 to 20 kt with gusts up to 25 kt. seas
2 to 3 ft. a chance of showers. 
.fri and fri night...w winds 15 to 20 kt with gusts up to 25 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 271405
cwfbox
expires:202604280300;;613375

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1004 am edt mon apr 27 2026

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


anz234-280300-
buzzards bay-
1004 am edt mon apr 27 2026

.this afternoon...ne winds around 10 kt with gusts up to 20 kt.
seas 2 to 3 ft. wave detail: n 1 foot at 3 seconds and s 1 foot
at 7 seconds. 
.tonight...ne winds 5 to 10 kt. seas around 2 ft. wave detail: se
2 ft at 11 seconds and n 1 foot at 3 seconds. 
.tue...ne winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. gusts up to 20 kt. seas 2 to 3 ft. wave detail: nw
2 ft at 3 seconds and ne 2 ft at 3 seconds. 
.tue night...ne winds 10 to 15 kt with gusts up to 20 kt,
becoming n 5 to 10 kt after midnight. seas around 2 ft. wave
detail: n 2 ft at 4 seconds and s 1 foot at 10 seconds. 
.wed...ne winds around 10 kt, becoming e in the afternoon. seas
around 2 ft. wave detail: n 1 foot at 3 seconds and s 1 foot at
9 seconds. 
.wed night...se winds 10 to 15 kt. seas around 2 ft. wave detail:
n 1 foot at 2 seconds and e 1 foot at 2 seconds. showers likely
after midnight. 
.thu and thu night...se winds 10 to 15 kt, becoming w 15 to
20 kt. seas around 2 ft. showers.
.fri and fri night...w winds 15 to 20 kt with gusts up to 25 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 271405
cwfbox
expires:202604280300;;613376

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1004 am edt mon apr 27 2026

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


anz235-280300-
rhode island sound-
1004 am edt mon apr 27 2026

.this afternoon...ne winds around 10 kt with gusts up to 20 kt.
seas 2 to 3 ft. wave detail: se 3 ft at 7 seconds and n 1 foot at
3 seconds. 
.tonight...ne winds 5 to 10 kt. seas 2 to 4 ft. wave detail: se
4 ft at 9 seconds and ne 2 ft at 3 seconds. 
.tue...ne winds 10 to 15 kt with gusts up to 20 kt. seas 3 to
4 ft. wave detail: e 4 ft at 8 seconds and se 4 ft at 10 seconds.
.tue night...ne winds 10 to 15 kt. gusts up to 20 kt in the
evening. seas 2 to 4 ft. wave detail: se 4 ft at 10 seconds and n
2 ft at 4 seconds. 
.wed...ne winds around 10 kt, becoming e in the afternoon. seas
2 to 4 ft. wave detail: ne 4 ft at 10 seconds and se 3 ft at
10 seconds. 
.wed night...se winds 10 to 15 kt. seas 2 to 4 ft. wave detail:
se 3 ft at 10 seconds and s 3 ft at 20 seconds. showers likely
after midnight. 
.thu...se winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
4 ft. showers.
.thu night...w winds 20 to 25 kt. seas 3 to 4 ft. a chance of
showers. 
.fri and fri night...w winds 20 to 25 kt, diminishing to 15 to
20 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 271405
cwfbox
expires:202604280300;;613379

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1004 am edt mon apr 27 2026

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


anz236-280300-
narragansett bay-
1004 am edt mon apr 27 2026

.this afternoon...ne winds 5 to 10 kt with gusts up to 20 kt.
waves around 2 ft. 
.tonight...ne winds around 5 kt. waves around 2 ft. 
.tue...ne winds 5 to 10 kt. waves around 2 ft. 
.tue night...ne winds 5 to 10 kt. waves around 2 ft. 
.wed...ne winds 5 to 10 kt, becoming e in the afternoon. waves
around 2 ft. 
.wed night...se winds around 10 kt. waves around 2 ft. showers
after midnight. 
.thu...se winds 10 to 15 kt. waves 2 to 3 ft. showers.
.thu night...nw winds 10 to 15 kt with gusts up to 20 kt. waves
2 to 3 ft. a chance of showers. 
.fri and fri night...w winds 15 to 20 kt. waves 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 271405
cwfbox
expires:202604280300;;613367

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1004 am edt mon apr 27 2026

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


anz250-280300-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
1004 am edt mon apr 27 2026

...small craft advisory in effect from late tonight through late
tuesday night...

.this afternoon...ne winds 5 to 10 kt. seas 2 to 3 ft. wave
detail: se 2 ft at 7 seconds and n 1 foot at 2 seconds. 
.tonight...e winds 5 to 10 kt. seas 2 to 4 ft. wave detail: e
4 ft at 12 seconds and se 4 ft at 13 seconds. patchy fog after
midnight with vsby 1 to 3 nm. 
.tue...ne winds 10 to 15 kt. gusts up to 20 kt in the afternoon.
seas 4 to 6 ft. wave detail: e 5 ft at 8 seconds and se 5 ft at
10 seconds. patchy fog in the morning with vsby 1 nm or less. 
.tue night...ne winds 10 to 15 kt with gusts up to 20 kt. seas
5 to 7 ft. wave detail: e 6 ft at 10 seconds and n 2 ft at
4 seconds. 
.wed...ne winds around 10 kt. seas 5 to 7 ft. wave detail: e 7 ft
at 10 seconds and n 2 ft at 4 seconds. a chance of showers in the
afternoon. 
.wed night...e winds 10 to 15 kt. gusts up to 20 kt after
midnight. seas 4 to 6 ft. wave detail: e 6 ft at 9 seconds and se
2 ft at 3 seconds. a chance of showers. 
.thu and thu night...se winds 15 to 20 kt, becoming ne. seas 4 to
6 ft. showers.
.fri...w winds 15 to 20 kt with gusts up to 25 kt. seas 4 to
6 ft. a chance of showers. 
.fri night...w winds 15 to 20 kt. seas 4 to 5 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 271405
cwfbox
expires:202604280300;;613370

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1004 am edt mon apr 27 2026

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


anz254-280300-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
1004 am edt mon apr 27 2026

...small craft advisory in effect through late tuesday night...

.this afternoon...ne winds 10 to 15 kt with gusts up to 25 kt.
seas 3 to 5 ft. wave detail: se 3 ft at 7 seconds and n 2 ft at
3 seconds. 
.tonight...ne winds 10 to 15 kt with gusts up to 25 kt. seas 4 to
6 ft. wave detail: e 5 ft at 12 seconds and se 3 ft at 8 seconds.
patchy fog after midnight with vsby 1 to 3 nm. 
.tue...ne winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. gusts up to 25 kt. seas 5 to 7 ft. wave detail: e 6 ft
at 9 seconds and n 2 ft at 4 seconds. patchy fog in the morning
with vsby 1 nm or less. 
.tue night...ne winds 15 to 20 kt, becoming n 10 to 15 kt after
midnight. gusts up to 25 kt. seas 5 to 8 ft. wave detail: e 7 ft
at 10 seconds and n 3 ft at 5 seconds. 
.wed...ne winds 10 to 15 kt. seas 5 to 7 ft. wave detail: e 7 ft
at 10 seconds and ne 3 ft at 5 seconds. patchy fog in the morning
with vsby 1 to 3 nm. 
.wed night...e winds 10 to 15 kt. gusts up to 20 kt after
midnight. seas 4 to 6 ft. wave detail: e 6 ft at 9 seconds and e
3 ft at 5 seconds. a chance of showers after midnight. 
.thu and thu night...se winds around 15 kt, becoming sw. seas
4 to 6 ft. showers.
.fri and fri night...w winds 15 to 20 kt. seas 4 to 6 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 271405
cwfbox
expires:202604280300;;613371

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1004 am edt mon apr 27 2026

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


anz255-280300-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
1004 am edt mon apr 27 2026

...small craft advisory in effect through late tuesday night...

.this afternoon...ne winds 10 to 15 kt with gusts up to 25 kt.
seas 3 to 5 ft. wave detail: e 4 ft at 12 seconds and se 3 ft at
7 seconds. 
.tonight...ne winds 10 to 15 kt with gusts up to 25 kt. seas 4 to
6 ft. wave detail: e 6 ft at 9 seconds and s 3 ft at 9 seconds. 
.tue...ne winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. gusts up to 25 kt. seas 4 to 6 ft. wave detail: e 6 ft
at 9 seconds and n 3 ft at 4 seconds. 
.tue night...ne winds 15 to 20 kt, becoming n 10 to 15 kt after
midnight. gusts up to 25 kt. seas 5 to 7 ft. wave detail: e 5 ft
at 9 seconds and n 4 ft at 5 seconds. 
.wed...ne winds 10 to 15 kt. gusts up to 20 kt in the morning.
seas 4 to 6 ft. wave detail: e 6 ft at 10 seconds and n 3 ft at
4 seconds. 
.wed night...se winds 10 to 15 kt. seas 4 to 6 ft. wave detail: e
5 ft at 9 seconds and ne 2 ft at 5 seconds. a chance of showers
after midnight. 
.thu...se winds around 15 kt with gusts up to 20 kt. seas 4 to
6 ft. showers.
.thu night...w winds 20 to 25 kt. seas 4 to 6 ft. a chance of
showers. 
.fri and fri night...w winds 20 to 25 kt. seas 4 to 6 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.

$$