fzus51 kbox 212005
cwfbox
expires:202606220900;;143107

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 pm edt sun jun 21 2026

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


anz231-220900-
cape cod bay-
405 pm edt sun jun 21 2026

.tonight...sw winds 5 to 10 kt, becoming w after midnight. seas
around 2 ft this evening, then 1 foot or less. wave detail: sw
1 foot at 4 seconds and e 1 foot at 5 seconds, becoming w 1 foot
at 3 seconds and se 1 foot at 5 seconds. 
.mon...sw winds around 5 kt, becoming s in the afternoon. seas
1 foot or less. wave detail: w 1 foot at 3 seconds and se 1 foot
at 4 seconds. a chance of showers in the afternoon. 
.mon night...se winds 5 to 10 kt, becoming s 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 3 seconds
and se 1 foot at 8 seconds, becoming s 2 ft at 3 seconds and se
1 foot at 7 seconds. a chance of showers. 
.tue...sw winds 10 to 15 kt with gusts up to 20 kt, becoming nw
5 to 10 kt in the afternoon. seas around 2 ft. wave detail: s
2 ft at 3 seconds and se 1 foot at 6 seconds. showers with a
chance of tstms in the morning, then a chance of showers in the
afternoon. 
.tue night...nw winds 5 to 10 kt. seas 1 foot or less. wave
detail: nw 1 foot at 2 seconds and e 1 foot at 6 seconds. a
chance of showers in the evening. 
.wed and wed night...w winds 5 to 10 kt. seas 1 foot or less.
wave detail: nw 1 foot at 3 seconds and e 1 foot at 6 seconds. 
.thu and thu night...se winds 5 to 10 kt, becoming s. seas around
2 ft, then 1 foot or less. 
.fri and fri night...s winds 5 to 10 kt. gusts up to 20 kt. seas
around 2 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.

$$

fzus51 kbox 212005
cwfbox
expires:202606220900;;143111

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 pm edt sun jun 21 2026

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


anz232-220900-
nantucket sound-
405 pm edt sun jun 21 2026

.tonight...sw winds 10 to 15 kt with gusts up to 20 kt, becoming
w 5 to 10 kt after midnight. seas around 2 ft. wave detail: w
2 ft at 4 seconds and s 1 foot at 8 seconds. 
.mon...sw winds around 5 kt, becoming s in the afternoon. seas
around 2 ft in the morning, then 1 foot or less. wave detail: sw
1 foot at 4 seconds and s 1 foot at 7 seconds, becoming s 1 foot
at 6 seconds and se 1 foot at 12 seconds. 
.mon night...s winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. seas 2 to 3 ft. wave detail: s 3 ft at 4 seconds and se
1 foot at 7 seconds. a chance of showers in the evening. showers
likely after midnight. 
.tue...s winds 15 to 20 kt, becoming nw 10 to 15 kt in the
afternoon. gusts up to 25 kt. seas 2 to 3 ft. wave detail: s 3 ft
at 5 seconds and e 1 foot at 12 seconds. showers with a chance of
tstms in the morning, then showers in the afternoon. 
.tue night...nw winds 5 to 10 kt. seas around 2 ft. wave detail:
nw 1 foot at 3 seconds and se 1 foot at 7 seconds. a chance of
showers in the evening. 
.wed and wed night...w winds 5 to 10 kt. seas around 2 ft. wave
detail: nw 1 foot at 3 seconds and se 1 foot at 7 seconds. 
.thu and thu night...sw winds 5 to 10 kt. seas around 2 ft. 
.fri and fri night...s winds 5 to 10 kt. seas around 2 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.

$$

fzus51 kbox 212005
cwfbox
expires:202606220900;;143112

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 pm edt sun jun 21 2026

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


anz233-220900-
vineyard sound-
405 pm edt sun jun 21 2026

.tonight...sw winds 10 to 15 kt with gusts up to 20 kt, becoming
w 5 to 10 kt after midnight. seas around 2 ft. wave detail: sw
2 ft at 5 seconds and sw 2 ft at 8 seconds. 
.mon...sw winds around 5 kt, becoming s in the afternoon. seas
around 2 ft. wave detail: s 1 foot at 7 seconds. a chance of
showers in the afternoon. 
.mon night...s winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. seas 2 to 3 ft. wave detail: s 3 ft at 5 seconds and s
2 ft at 9 seconds. a chance of showers in the evening. showers
likely after midnight. 
.tue...sw winds 10 to 15 kt with gusts up to 20 kt, becoming nw
5 to 10 kt in the afternoon. seas 2 to 3 ft. wave detail: s 3 ft
at 7 seconds. showers. a chance of tstms in the morning. 
.tue night...nw winds 5 to 10 kt. seas around 2 ft. wave detail:
sw 2 ft at 6 seconds and e 2 ft at 6 seconds. a chance of showers
in the evening. 
.wed and wed night...w winds 10 to 15 kt. seas around 2 ft. wave
detail: s 2 ft at 7 seconds and nw 1 foot at 4 seconds. 
.thu and thu night...sw winds 5 to 10 kt. seas around 2 ft. 
.fri and fri night...s winds 10 to 15 kt. seas around 2 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.

$$

fzus51 kbox 212005
cwfbox
expires:202606220900;;143113

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 pm edt sun jun 21 2026

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


anz234-220900-
buzzards bay-
405 pm edt sun jun 21 2026

.tonight...w winds 10 to 15 kt with gusts up to 20 kt,
diminishing to around 5 kt after midnight. seas 2 to 3 ft. wave
detail: sw 2 ft at 4 seconds and s 1 foot at 7 seconds. 
.mon...sw winds around 5 kt, becoming s in the afternoon. seas
1 foot or less. wave detail: sw 1 foot at 4 seconds and s 1 foot
at 7 seconds. a chance of showers in the afternoon. 
.mon night...s winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. gusts up to 25 kt. seas 1 to 2 ft. wave detail: sw 2 ft
at 4 seconds and se 2 ft at 9 seconds. a chance of showers in the
evening. showers likely after midnight. 
.tue...sw winds 15 to 20 kt with gusts up to 25 kt, becoming nw
5 to 10 kt in the afternoon. seas 2 to 3 ft. wave detail: sw 3 ft
at 5 seconds and s 2 ft at 9 seconds. showers with a chance of
tstms in the morning, then a chance of showers in the afternoon. 
.tue night...nw winds 5 to 10 kt. seas around 2 ft. wave detail:
sw 2 ft at 6 seconds and ne 1 foot at 3 seconds. a chance of
showers in the evening. 
.wed and wed night...w winds 5 to 10 kt. seas around 2 ft. wave
detail: nw 1 foot at 3 seconds and e 1 foot at 5 seconds. 
.thu and thu night...sw winds 5 to 10 kt. seas around 2 ft. 
.fri and fri night...s winds 10 to 15 kt. gusts up to 20 kt. seas
around 2 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.

$$

fzus51 kbox 212005
cwfbox
expires:202606220900;;143114

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 pm edt sun jun 21 2026

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


anz235-220900-
rhode island sound-
405 pm edt sun jun 21 2026

.tonight...sw winds 10 to 15 kt with gusts up to 20 kt, becoming
w 5 to 10 kt after midnight. seas 2 to 3 ft. wave detail: sw 3 ft
at 8 seconds and w 2 ft at 4 seconds. 
.mon...sw winds around 5 kt, becoming se in the afternoon. seas
around 2 ft. wave detail: s 2 ft at 7 seconds and se 1 foot at
12 seconds. a chance of showers in the afternoon. 
.mon night...s winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. seas 2 to 4 ft. wave detail: sw 4 ft at 6 seconds and s
3 ft at 9 seconds. a chance of showers in the evening. showers
likely after midnight. 
.tue...sw winds 15 to 20 kt, becoming nw 5 to 10 kt in the
afternoon. seas 2 to 4 ft. wave detail: s 4 ft at 7 seconds.
showers. a chance of tstms in the morning. 
.tue night...nw winds 5 to 10 kt. seas 2 to 3 ft. wave detail: s
3 ft at 7 seconds and e 2 ft at 8 seconds. a chance of showers in
the evening. 
.wed and wed night...w winds 10 to 15 kt. seas 2 to 3 ft. wave
detail: se 3 ft at 7 seconds and nw 1 foot at 3 seconds. 
.thu and thu night...sw winds 5 to 10 kt. seas 2 to 3 ft. 
.fri and fri night...s winds 10 to 15 kt. seas 2 to 3 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.

$$

fzus51 kbox 212005
cwfbox
expires:202606220900;;143117

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 pm edt sun jun 21 2026

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


anz236-220900-
narragansett bay-
405 pm edt sun jun 21 2026

.tonight...w winds 10 to 15 kt, diminishing to around 5 kt after
midnight. waves around 2 ft. 
.mon...s winds around 5 kt, increasing to 5 to 10 kt in the
afternoon. waves 1 foot or less. a chance of showers in the
afternoon. 
.mon night...s winds 10 to 15 kt with gusts up to 20 kt. waves
2 to 3 ft. a chance of showers in the evening. showers likely
after midnight. 
.tue...sw winds 10 to 15 kt with gusts up to 20 kt, becoming nw
5 to 10 kt in the afternoon. waves 2 to 3 ft. showers. a chance
of tstms in the morning. 
.tue night...nw winds 5 to 10 kt. waves around 2 ft. a chance of
showers in the evening. 
.wed and wed night...w winds 5 to 10 kt. waves around 2 ft. 
.thu and thu night...sw winds 5 to 10 kt. waves around 2 ft. 
.fri and fri night...s winds 5 to 10 kt. waves around 2 ft. a
chance of showers.  

winds and waves 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.

$$

fzus51 kbox 212005
cwfbox
expires:202606220900;;143105

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 pm edt sun jun 21 2026

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


anz250-220900-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
405 pm edt sun jun 21 2026

.tonight...sw winds around 5 kt. seas around 2 ft. wave detail: w
1 foot at 3 seconds and se 1 foot at 8 seconds. 
.mon...w winds around 5 kt, becoming se in the afternoon. seas
1 foot or less, then around 2 ft in the afternoon. wave detail: w
1 foot at 2 seconds and se 1 foot at 8 seconds. a chance of
showers in the afternoon. 
.mon night...se winds 10 to 15 kt. gusts up to 25 kt after
midnight. seas 2 to 3 ft. wave detail: s 3 ft at 4 seconds and e
1 foot at 8 seconds. a chance of showers in the evening. showers
likely after midnight. 
.tue...sw winds 10 to 15 kt with gusts up to 25 kt, becoming nw
5 to 10 kt in the afternoon. seas 2 to 4 ft. wave detail: se 4 ft
at 7 seconds and s 3 ft at 4 seconds. showers with a chance of
tstms in the morning, then a chance of showers in the afternoon. 
.tue night...nw winds 5 to 10 kt. seas 2 to 3 ft. wave detail: e
3 ft at 7 seconds and w 1 foot at 3 seconds. a chance of showers
in the evening. 
.wed and wed night...w winds 5 to 10 kt. seas 2 to 3 ft. wave
detail: se 3 ft at 7 seconds and w 1 foot at 3 seconds. 
.thu and thu night...se winds 5 to 10 kt, becoming s. seas around
2 ft. 
.fri and fri night...s winds 10 to 15 kt with gusts up to 20 kt.
seas 2 to 3 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.

$$

fzus51 kbox 212005
cwfbox
expires:202606220900;;143108

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 pm edt sun jun 21 2026

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


anz254-220900-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
405 pm edt sun jun 21 2026

.tonight...sw winds 10 to 15 kt with gusts up to 20 kt, becoming
w 5 to 10 kt after midnight. seas 2 to 3 ft. wave detail: s 3 ft
at 8 seconds and nw 1 foot at 4 seconds. 
.mon...sw winds around 5 kt, becoming s in the afternoon. seas
around 2 ft. wave detail: s 2 ft at 7 seconds and w 1 foot at
3 seconds. 
.mon night...s winds 10 to 15 kt with gusts up to 25 kt. seas
2 to 4 ft. wave detail: sw 4 ft at 4 seconds and e 1 foot at
8 seconds. a chance of showers after midnight. 
.tue...s winds 15 to 20 kt, becoming w 10 to 15 kt in the
afternoon. gusts up to 25 kt. seas 2 to 4 ft. wave detail: sw
4 ft at 5 seconds and e 1 foot at 8 seconds. showers. a chance of
tstms in the morning. 
.tue night...nw winds 5 to 10 kt. seas 2 to 4 ft. wave detail: s
3 ft at 7 seconds and e 2 ft at 8 seconds. a chance of showers in
the evening. 
.wed and wed night...sw winds 5 to 10 kt. seas 2 to 3 ft. wave
detail: se 3 ft at 7 seconds and e 2 ft at 9 seconds. 
.thu through fri...s winds 5 to 10 kt with gusts up to 20 kt.
seas 2 to 3 ft. 
.fri night...sw winds 5 to 10 kt. seas 2 to 3 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.

$$

fzus51 kbox 212005
cwfbox
expires:202606220900;;143109

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 pm edt sun jun 21 2026

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


anz255-220900-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
405 pm edt sun jun 21 2026

...small craft advisory in effect from monday afternoon through
tuesday morning...

.tonight...sw winds 10 to 15 kt with gusts up to 20 kt, becoming
w 5 to 10 kt after midnight. seas 2 to 3 ft. wave detail: sw 3 ft
at 8 seconds and w 2 ft at 5 seconds. 
.mon...sw winds around 5 kt, becoming s in the afternoon. seas
around 2 ft. wave detail: s 2 ft at 7 seconds and w 1 foot at
4 seconds. 
.mon night...s winds 15 to 20 kt with gusts up to 25 kt. seas
2 to 4 ft. wave detail: se 4 ft at 6 seconds and sw 1 foot at
9 seconds. a chance of showers after midnight. 
.tue...s winds 15 to 20 kt, becoming w 10 to 15 kt in the
afternoon. seas 3 to 4 ft. wave detail: sw 4 ft at 6 seconds and
e 1 foot at 8 seconds. showers. a chance of tstms in the morning.
.tue night...nw winds 5 to 10 kt. seas 3 to 4 ft. wave detail: s
4 ft at 7 seconds and nw 2 ft at 3 seconds. a chance of showers
in the evening. 
.wed and wed night...sw winds 5 to 10 kt. seas 2 to 4 ft. wave
detail: s 4 ft at 7 seconds and nw 1 foot at 2 seconds. 
.thu through fri...s winds 5 to 10 kt. seas 2 to 3 ft. 
.fri night...sw winds 5 to 10 kt. seas 2 to 3 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.

$$