fzus51 kbox 200806
cwfbox
expires:202604202100;;680940

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 am edt mon apr 20 2026

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz231-202100-
cape cod bay-
405 am edt mon apr 20 2026

.today...w winds 5 to 10 kt, becoming nw this afternoon. seas
around 2 ft. wave detail: nw 2 ft at 4 seconds and n 2 ft at
5 seconds. a slight chance of rain this afternoon. 
.tonight...n winds 5 to 10 kt, increasing to 10 to 15 kt with
gusts up to 20 kt after midnight. seas around 2 ft. wave detail:
n 2 ft at 4 seconds and se 1 foot at 7 seconds. 
.tue...n winds 10 to 15 kt, becoming ne 5 to 10 kt in the
afternoon. seas around 2 ft. wave detail: n 2 ft at 3 seconds and
n 2 ft at 4 seconds. 
.tue night...se winds 5 to 10 kt, becoming s after midnight. seas
around 2 ft. wave detail: n 2 ft at 5 seconds and s 1 foot at
5 seconds. 
.wed...s winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. seas around 2 ft. wave detail: s
1 foot at 2 seconds and n 1 foot at 4 seconds. 
.wed night...se winds 5 to 10 kt. seas around 2 ft. wave detail:
sw 1 foot at 3 seconds and ne 1 foot at 4 seconds. 
.thu through fri night...ne 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 200806
cwfbox
expires:202604202100;;680944

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 am edt mon apr 20 2026

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz232-202100-
nantucket sound-
405 am edt mon apr 20 2026

.today...w winds 10 to 15 kt. seas around 2 ft. wave detail: w
2 ft at 3 seconds and s 1 foot at 6 seconds. a slight chance of
rain this afternoon. 
.tonight...nw winds 5 to 10 kt, becoming n 10 to 15 kt with gusts
up to 20 kt after midnight. seas around 2 ft. wave detail: nw
2 ft at 4 seconds and ne 2 ft at 7 seconds. 
.tue...n winds 10 to 15 kt with gusts up to 20 kt, becoming ne
5 to 10 kt in the afternoon. seas around 2 ft. wave detail: n
2 ft at 4 seconds and s 1 foot at 6 seconds. 
.tue night...se winds 5 to 10 kt, becoming sw after midnight.
seas around 2 ft. wave detail: nw 1 foot at 4 seconds and e
1 foot at 4 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 4 seconds. 
.wed night...se winds 5 to 10 kt, becoming e after midnight. seas
around 2 ft. wave detail: se 2 ft at 4 seconds and w 1 foot at
4 seconds. 
.thu through fri night...ne 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 200806
cwfbox
expires:202604202100;;680945

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 am edt mon apr 20 2026

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz233-202100-
vineyard sound-
405 am edt mon apr 20 2026

.today...w winds 10 to 15 kt. seas around 2 ft. wave detail: w
2 ft at 5 seconds and n 2 ft at 5 seconds. a slight chance of
rain this afternoon. 
.tonight...nw winds 10 to 15 kt, becoming n with gusts up to
20 kt after midnight. seas around 2 ft. wave detail: w 2 ft at
4 seconds and n 2 ft at 4 seconds. 
.tue...n winds 10 to 15 kt, becoming ne 5 to 10 kt in the
afternoon. seas around 2 ft in the morning, then 1 foot or less.
wave detail: ne 1 foot at 3 seconds and nw 1 foot at 4 seconds. 
.tue night...s winds 5 to 10 kt. seas 1 foot or less, then around
2 ft after midnight. wave detail: e 1 foot at 3 seconds and sw
1 foot at 3 seconds, becoming sw 2 ft at 4 seconds and ne 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: e 2 ft at 4 seconds and sw 2 ft at
5 seconds. 
.wed night...se winds 5 to 10 kt, becoming e after midnight. seas
around 2 ft. wave detail: s 2 ft at 7 seconds and w 1 foot at
4 seconds. 
.thu through fri night...ne 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 200806
cwfbox
expires:202604202100;;680946

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 am edt mon apr 20 2026

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz234-202100-
buzzards bay-
405 am edt mon apr 20 2026

.today...w winds 5 to 10 kt, becoming sw 10 to 15 kt this
afternoon. seas around 2 ft this morning, then 1 foot or less.
wave detail: n 2 ft at 5 seconds and w 2 ft at 5 seconds,
becoming sw 1 foot at 5 seconds and n 1 foot at 5 seconds. a
slight chance of rain this afternoon. 
.tonight...nw winds 5 to 10 kt, becoming n 10 to 15 kt with gusts
up to 20 kt after midnight. seas 1 foot or less, then around 2 ft
after midnight. wave detail: sw 1 foot at 5 seconds and n 1 foot
at 5 seconds, becoming n 2 ft at 3 seconds and sw 1 foot at
5 seconds. 
.tue...n winds 10 to 15 kt, becoming se 5 to 10 kt in the
afternoon. seas around 2 ft in the morning, then 1 foot or less.
wave detail: ne 1 foot at 3 seconds and nw 1 foot at 4 seconds,
becoming ne 1 foot at 2 seconds and nw 1 foot at 4 seconds. 
.tue night...s winds 5 to 10 kt. seas 1 foot or less, then around
2 ft after midnight. wave detail: ne 1 foot at 3 seconds and sw
1 foot at 3 seconds, becoming sw 1 foot at 3 seconds and e 1 foot
at 4 seconds. 
.wed...s winds 10 to 15 kt with gusts up to 20 kt. seas around
2 ft. wave detail: sw 2 ft at 4 seconds and e 1 foot at
4 seconds. 
.wed night...se winds 5 to 10 kt, becoming e after midnight. seas
around 2 ft. wave detail: se 2 ft at 7 seconds and e 1 foot at
4 seconds. 
.thu through fri night...ne 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 200806
cwfbox
expires:202604202100;;680947

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 am edt mon apr 20 2026

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz235-202100-
rhode island sound-
405 am edt mon apr 20 2026

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

$$

fzus51 kbox 200806
cwfbox
expires:202604202100;;680950

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 am edt mon apr 20 2026

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz236-202100-
narragansett bay-
405 am edt mon apr 20 2026

.today...w winds 5 to 10 kt. waves around 2 ft. a slight chance
of rain this afternoon. 
.tonight...n winds 5 to 10 kt. waves around 2 ft. 
.tue...n winds 5 to 10 kt, becoming s in the afternoon. waves
around 2 ft in the morning, then 1 foot or less. 
.tue night...s winds 5 to 10 kt. waves 1 foot or less, then
around 2 ft after midnight. 
.wed...s winds 10 to 15 kt. gusts up to 20 kt in the afternoon.
waves around 2 ft. 
.wed night...se winds 5 to 10 kt, becoming ne after midnight.
waves around 2 ft. 
.thu through fri night...e winds 5 to 10 kt. waves 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 200806
cwfbox
expires:202604202100;;680938

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 am edt mon apr 20 2026

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz250-202100-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
405 am edt mon apr 20 2026

.today...w winds 10 to 15 kt, diminishing to 5 to 10 kt this
afternoon. seas 2 to 4 ft. wave detail: w 2 ft at 4 seconds and
se 2 ft at 7 seconds. 
.tonight...n winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. seas 2 to 4 ft. wave detail: n 3 ft at 4 seconds and nw
2 ft at 4 seconds. 
.tue...n winds 10 to 15 kt, becoming ne 5 to 10 kt in the
afternoon. seas 2 to 4 ft. wave detail: n 3 ft at 5 seconds and e
2 ft at 8 seconds. 
.tue night...s winds 10 to 15 kt. seas 2 to 3 ft. wave detail: ne
2 ft at 4 seconds and se 2 ft at 7 seconds. 
.wed and wed night...s winds 10 to 15 kt. seas 2 to 4 ft. wave
detail: sw 2 ft at 3 seconds and e 2 ft at 9 seconds. 
.thu through fri night...ne winds 10 to 15 kt. seas 2 to 3 ft.
wave detail: nw 2 ft at 4 seconds and ne 2 ft at 5 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 200806
cwfbox
expires:202604202100;;680941

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 am edt mon apr 20 2026

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz254-202100-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
405 am edt mon apr 20 2026

.today...w winds 10 to 15 kt, diminishing to 5 to 10 kt this
afternoon. seas 2 to 4 ft. wave detail: nw 3 ft at 5 seconds and
n 2 ft at 5 seconds. a slight chance of rain this afternoon. 
.tonight...w winds 5 to 10 kt, becoming n 15 to 20 kt after
midnight. seas 2 to 3 ft. wave detail: n 3 ft at 5 seconds and s
2 ft at 7 seconds. 
.tue...ne winds 10 to 15 kt with gusts up to 20 kt, becoming n
5 to 10 kt in the afternoon. seas 2 to 3 ft. wave detail: n 3 ft
at 5 seconds and e 2 ft at 8 seconds. 
.tue night...se winds around 5 kt, becoming sw after midnight.
seas 2 to 3 ft. wave detail: n 2 ft at 5 seconds and e 2 ft at
8 seconds. 
.wed...s winds 10 to 15 kt. seas 2 to 4 ft. wave detail: sw 2 ft
at 4 seconds and e 2 ft at 7 seconds. 
.wed night...se winds around 10 kt, becoming e after midnight.
seas 3 to 4 ft. wave detail: e 3 ft at 9 seconds and s 2 ft at
4 seconds. 
.thu through fri night...n winds 5 to 10 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 200806
cwfbox
expires:202604202100;;680942

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 am edt mon apr 20 2026

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz255-202100-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
405 am edt mon apr 20 2026

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

$$