fzus51 kbox 211405
cwfbox
expires:202604220300;;747120

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1004 am edt tue apr 21 2026

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


anz231-220300-
cape cod bay-
1004 am edt tue apr 21 2026

.this afternoon...ne winds 5 to 10 kt, becoming e. seas around
2 ft. wave detail: n 2 ft at 4 seconds and s 1 foot at 6 seconds.
.tonight...s winds around 10 kt. seas around 2 ft. wave detail: n
2 ft at 5 seconds and se 1 foot at 3 seconds. 
.wed...s winds 10 to 15 kt. gusts up to 20 kt in the afternoon.
seas around 2 ft. wave detail: sw 2 ft at 4 seconds and ne 1 foot
at 5 seconds. a chance of rain in the morning, then rain likely
in the afternoon. 
.wed night...s winds 5 to 10 kt. seas around 2 ft in the evening,
then 1 foot or less. wave detail: sw 1 foot at 3 seconds and e
1 foot at 6 seconds, becoming s 1 foot at 3 seconds and e 1 foot
at 7 seconds. a chance of rain in the evening. 
.thu and thu night...nw winds 5 to 10 kt. seas 1 foot or less.
wave detail: sw 1 foot at 3 seconds and e 1 foot at 7 seconds. 
.fri through sat night...e winds 5 to 10 kt. seas around 2 ft.
wave detail: nw 1 foot at 3 seconds and ne 1 foot at 6 seconds.  

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 211405
cwfbox
expires:202604220300;;747124

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1004 am edt tue apr 21 2026

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


anz232-220300-
nantucket sound-
1004 am edt tue apr 21 2026

.this afternoon...ne winds around 10 kt, becoming e. seas around
2 ft. wave detail: n 2 ft at 4 seconds and s 1 foot at 6 seconds.
.tonight...s winds 5 to 10 kt. seas around 2 ft. wave detail: nw
1 foot at 4 seconds and se 1 foot at 6 seconds. 
.wed...s winds 10 to 15 kt. gusts up to 20 kt in the afternoon.
seas around 2 ft. wave detail: sw 2 ft at 4 seconds and e 1 foot
at 7 seconds. rain likely in the afternoon. 
.wed night...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 w 2 ft at 5 seconds. a chance of rain in the
evening. 
.thu...w winds 5 to 10 kt. seas around 2 ft. wave detail: sw
1 foot at 6 seconds and e 1 foot at 8 seconds. 
.thu night...nw winds 5 to 10 kt. seas around 2 ft. wave detail:
w 1 foot at 2 seconds and se 1 foot at 7 seconds. 
.fri through sat night...e winds 5 to 10 kt. seas around 2 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 211405
cwfbox
expires:202604220300;;747125

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1004 am edt tue apr 21 2026

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


anz233-220300-
vineyard sound-
1004 am edt tue apr 21 2026

.this afternoon...e winds 5 to 10 kt, becoming s. seas around
2 ft, then 1 foot or less. wave detail: n 1 foot at 3 seconds and
s 1 foot at 6 seconds, becoming e 1 foot at 3 seconds and nw
1 foot at 4 seconds. 
.tonight...s winds around 10 kt. seas 1 foot or less, then around
2 ft after midnight. wave detail: sw 1 foot at 3 seconds and e
1 foot at 9 seconds, becoming sw 2 ft at 5 seconds and e 1 foot
at 8 seconds. 
.wed...s winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. wave detail: sw 3 ft at 6 seconds and e 1 foot at
8 seconds. a chance of rain in the morning, then rain likely in
the afternoon. 
.wed night...se winds 10 to 15 kt, diminishing to 5 to 10 kt
after midnight. seas around 2 ft. wave detail: sw 2 ft at
6 seconds and e 1 foot at 10 seconds. a chance of rain in the
evening. 
.thu...w winds 5 to 10 kt. seas around 2 ft. wave detail: sw 2 ft
at 6 seconds and nw 1 foot at 3 seconds. 
.thu night...nw winds 5 to 10 kt. seas around 2 ft. wave detail:
sw 2 ft at 6 seconds and nw 1 foot at 3 seconds. 
.fri through sat night...e winds 5 to 10 kt. seas around 2 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 211405
cwfbox
expires:202604220300;;747126

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1004 am edt tue apr 21 2026

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


anz234-220300-
buzzards bay-
1004 am edt tue apr 21 2026

.this afternoon...e winds 5 to 10 kt, becoming s. seas 1 foot or
less. wave detail: n 1 foot at 3 seconds and s 1 foot at
6 seconds. 
.tonight...s winds 10 to 15 kt. seas 1 foot or less. wave detail:
sw 1 foot at 3 seconds and e 1 foot at 8 seconds. 
.wed...s winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. wave detail: sw 2 ft at 4 seconds and sw 2 ft at 7 seconds.
a chance of rain in the morning, then rain likely in the
afternoon. 
.wed night...se winds 5 to 10 kt. seas around 2 ft. wave detail:
sw 2 ft at 5 seconds and se 1 foot at 9 seconds. a chance of rain
in the evening. 
.thu...w winds 5 to 10 kt. seas around 2 ft. wave detail: sw 2 ft
at 6 seconds and w 1 foot at 2 seconds. 
.thu night...nw winds 5 to 10 kt. seas around 2 ft. wave detail:
nw 1 foot at 2 seconds and sw 1 foot at 6 seconds. 
.fri through sat night...e winds 5 to 10 kt. seas around 2 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 211405
cwfbox
expires:202604220300;;747127

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1004 am edt tue apr 21 2026

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


anz235-220300-
rhode island sound-
1004 am edt tue apr 21 2026

.this afternoon...e winds 5 to 10 kt, becoming s. seas around
2 ft. wave detail: n 2 ft at 4 seconds and s 1 foot at 7 seconds.
.tonight...s winds 10 to 15 kt. seas 1 foot or less, then around
2 ft after midnight. wave detail: sw 1 foot at 4 seconds and e
1 foot at 6 seconds, becoming sw 2 ft at 4 seconds and e 1 foot
at 7 seconds. 
.wed...s winds 15 to 20 kt. seas 2 to 3 ft. wave detail: sw 3 ft
at 5 seconds and e 1 foot at 8 seconds. rain likely. 
.wed night...se winds 10 to 15 kt, becoming e 5 to 10 kt after
midnight. seas 2 to 3 ft. wave detail: se 3 ft at 7 seconds and w
2 ft at 5 seconds. rain likely in the evening. 
.thu...nw winds 5 to 10 kt, becoming w in the afternoon. seas
2 to 3 ft. wave detail: s 3 ft at 6 seconds and nw 1 foot at
3 seconds. 
.thu night...nw winds 5 to 10 kt. seas 2 to 3 ft. wave detail: sw
3 ft at 6 seconds and nw 1 foot at 3 seconds. 
.fri through sat...e winds 5 to 10 kt. seas around 2 ft. 
.sat night...e winds 5 to 10 kt. seas around 2 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 211405
cwfbox
expires:202604220300;;747130

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1004 am edt tue apr 21 2026

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


anz236-220300-
narragansett bay-
1004 am edt tue apr 21 2026

.this afternoon...e winds 5 to 10 kt, becoming s. waves 1 foot or
less. 
.tonight...s winds around 10 kt. waves 1 foot or less. 
.wed...s winds 10 to 15 kt with gusts up to 20 kt. waves around
2 ft. rain likely. 
.wed night...se winds 5 to 10 kt, becoming e after midnight.
waves around 2 ft. rain likely in the evening. 
.thu and thu night...nw winds 5 to 10 kt. waves around 2 ft. 
.fri through sat...e winds 5 to 10 kt. waves around 2 ft. 
.sat night...e winds 5 to 10 kt. waves 1 foot or less. 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 211405
cwfbox
expires:202604220300;;747118

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1004 am edt tue apr 21 2026

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


anz250-220300-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
1004 am edt tue apr 21 2026

.this afternoon...ne winds 5 to 10 kt, becoming se. seas 2 to
3 ft. wave detail: n 3 ft at 5 seconds and se 1 foot at
7 seconds. 
.tonight...s winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. wave detail: sw 3 ft at 4 seconds and e 2 ft at 6 seconds. 
.wed...s winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. wave detail: sw 3 ft at 4 seconds and e 2 ft at 7 seconds.
a chance of rain in the afternoon. 
.wed night...s winds 10 to 15 kt, diminishing to 5 to 10 kt after
midnight. seas 2 to 3 ft. wave detail: sw 3 ft at 5 seconds and e
2 ft at 8 seconds. a chance of rain in the evening. 
.thu and thu night...nw winds 5 to 10 kt. seas around 2 ft. wave
detail: sw 2 ft at 4 seconds and e 2 ft at 8 seconds. 
.fri through sat night...sw winds 5 to 10 kt. seas 2 to 3 ft.
wave detail: n 3 ft at 5 seconds and e 3 ft at 14 seconds.  

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 211405
cwfbox
expires:202604220300;;747121

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1004 am edt tue apr 21 2026

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


anz254-220300-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
1004 am edt tue apr 21 2026

.this afternoon...ne winds 5 to 10 kt. seas 2 to 3 ft. wave
detail: n 3 ft at 5 seconds and s 1 foot at 6 seconds. 
.tonight...se winds 5 to 10 kt, becoming s after midnight. seas
2 to 3 ft. wave detail: n 3 ft at 6 seconds and s 1 foot at
8 seconds. 
.wed...s winds 10 to 15 kt. gusts up to 20 kt in the afternoon.
seas 2 to 3 ft. wave detail: s 3 ft at 4 seconds and e 2 ft at
6 seconds. a chance of rain in the afternoon. 
.wed night...se winds 10 to 15 kt, diminishing to 5 to 10 kt
after midnight. seas 2 to 3 ft. wave detail: s 3 ft at 5 seconds
and e 2 ft at 9 seconds. a chance of rain in the evening. 
.thu and thu night...nw winds 5 to 10 kt. seas 2 to 3 ft. wave
detail: se 2 ft at 7 seconds and w 1 foot at 4 seconds. 
.fri through sat night...ne winds 5 to 10 kt. seas 2 to 3 ft.
wave detail: ne 3 ft at 7 seconds and e 3 ft at 14 seconds.  

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 211405
cwfbox
expires:202604220300;;747122

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1004 am edt tue apr 21 2026

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


anz255-220300-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
1004 am edt tue apr 21 2026

.this afternoon...ne winds 10 to 15 kt, becoming e 5 to 10 kt.
seas 2 to 3 ft. wave detail: n 3 ft at 5 seconds and s 1 foot at
7 seconds. 
.tonight...s winds 5 to 10 kt. seas around 2 ft. wave detail: se
2 ft at 7 seconds and nw 1 foot at 4 seconds. 
.wed...s winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. wave detail: se 3 ft at 6 seconds and w 2 ft at 5 seconds.
rain likely in the afternoon. 
.wed night...se winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. seas 3 to 4 ft. wave
detail: se 4 ft at 5 seconds and w 2 ft at 6 seconds. a chance of
rain in the evening. 
.thu...n winds 5 to 10 kt, becoming w in the afternoon. seas 3 to
4 ft. wave detail: sw 3 ft at 6 seconds and e 2 ft at 9 seconds. 
.thu night...nw winds 5 to 10 kt. seas 2 to 3 ft. wave detail: sw
3 ft at 6 seconds and e 2 ft at 8 seconds. 
.fri through sat night...e winds 5 to 10 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.

$$