fzus51 kbox 150503
cwfbox
expires:202608151800;;211824

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt sat aug 15 2026

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


anz231-151800-
cape cod bay-
103 am edt sat aug 15 2026

.rest of tonight...n winds 5 to 10 kt. seas 1 foot or less. wave
detail: n 1 foot at 3 seconds and ne 1 foot at 8 seconds. 
.sat...n winds 5 to 10 kt. seas 1 foot or less. wave detail: n
1 foot at 4 seconds. 
.sat night...se winds around 5 kt, becoming sw around 5 kt after
midnight. seas 1 foot or less. wave detail: n 1 foot at
4 seconds. 
.sun...s winds around 5 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. seas 1 foot or less, then around
2 ft in the afternoon. wave detail: nw 1 foot at 4 seconds,
becoming s 1 foot at 3 seconds and ne 1 foot at 4 seconds. 
.sun night...s winds 10 to 15 kt with gusts up to 25 kt. seas
2 to 3 ft. wave detail: se 2 ft at 4 seconds. a chance of showers
after midnight. 
.mon...se winds 15 to 20 kt with gusts up to 30 kt. seas 2 to
3 ft. wave detail: se 2 ft at 4 seconds. showers likely. 
.mon night...ne winds around 10 kt. gusts up to 20 kt in the
evening. seas around 2 ft. a chance of showers in the evening. 
.tue through wed night...s 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 150503
cwfbox
expires:202608151800;;211828

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt sat aug 15 2026

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


anz232-151800-
nantucket sound-
103 am edt sat aug 15 2026

.rest of tonight...n winds around 10 kt. seas 1 foot or less.
wave detail: nw 1 foot at 3 seconds and e 1 foot at 12 seconds. 
.sat...ne winds 5 to 10 kt. seas 1 foot or less. wave detail: w
1 foot at 4 seconds and ne 1 foot at 4 seconds. 
.sat night...se winds around 5 kt, becoming sw after midnight.
seas 1 foot or less. wave detail: s 1 foot at 4 seconds and ne
1 foot at 7 seconds. 
.sun...s winds around 5 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. seas 1 foot or less, then around
2 ft in the afternoon. wave detail: sw 1 foot at 2 seconds and e
1 foot at 8 seconds, becoming s 2 ft at 3 seconds and e 1 foot at
8 seconds. 
.sun night...s winds 10 to 15 kt, increasing to 15 to 20 kt with
gusts up to 25 kt after midnight. seas 2 to 4 ft. wave detail: s
4 ft at 4 seconds and se 2 ft at 10 seconds. a chance of showers
after midnight. 
.mon...se winds 20 to 25 kt, diminishing to 15 to 20 kt in the
afternoon. gusts up to 30 kt. seas 2 to 4 ft. wave detail: s 4 ft
at 5 seconds and se 2 ft at 10 seconds. showers likely. 
.mon night...ne winds 10 to 15 kt. gusts up to 20 kt in the
evening. seas 2 to 3 ft. a chance of showers in the evening. 
.tue through wed night...sw winds 10 to 15 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 150503
cwfbox
expires:202608151800;;211829

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt sat aug 15 2026

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


anz233-151800-
vineyard sound-
103 am edt sat aug 15 2026

.rest of tonight...n winds 5 to 10 kt. seas 1 foot or less. wave
detail: nw 1 foot at 4 seconds and e 1 foot at 11 seconds. 
.sat...ne winds 5 to 10 kt, becoming sw in the afternoon. seas
1 foot or less. wave detail: sw 1 foot at 4 seconds and ne 1 foot
at 4 seconds. 
.sat night...s winds 5 to 10 kt. seas 1 foot or less. wave
detail: sw 1 foot at 3 seconds and e 1 foot at 9 seconds. 
.sun...s winds around 5 kt, increasing to 10 to 15 kt in the
afternoon. seas 1 foot or less, then around 2 ft in the
afternoon. wave detail: sw 1 foot at 3 seconds and se 1 foot at
9 seconds, becoming sw 2 ft at 3 seconds and se 1 foot at
10 seconds. 
.sun night...s winds 10 to 15 kt, increasing to 20 to 25 kt after
midnight. seas 2 to 3 ft, building to 3 to 5 ft after midnight.
wave detail: s 3 ft at 4 seconds and se 1 foot at 9 seconds,
becoming s 5 ft at 6 seconds and se 3 ft at 11 seconds. showers
likely after midnight. 
.mon...se winds 20 to 25 kt, diminishing to 15 to 20 kt in the
afternoon. gusts up to 30 kt. seas 3 to 5 ft. wave detail: s 5 ft
at 7 seconds and se 4 ft at 10 seconds. showers likely. 
.mon night...ne winds 10 to 15 kt. gusts up to 20 kt in the
evening. seas 2 to 3 ft. 
.tue through wed night...sw winds 10 to 15 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 150503
cwfbox
expires:202608151800;;211830

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt sat aug 15 2026

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


anz234-151800-
buzzards bay-
103 am edt sat aug 15 2026

.rest of tonight...n winds 5 to 10 kt. seas 1 foot or less. wave
detail: nw 1 foot at 3 seconds and e 1 foot at 9 seconds. 
.sat...n winds 5 to 10 kt, becoming s in the afternoon. seas
1 foot or less. wave detail: n 1 foot at 2 seconds and sw 1 foot
at 3 seconds. 
.sat night...s winds 5 to 10 kt. seas 1 foot or less. wave
detail: sw 1 foot at 3 seconds and e 1 foot at 8 seconds. 
.sun...s winds around 5 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. seas 1 foot or less, then around
2 ft in the afternoon. wave detail: sw 1 foot at 3 seconds and e
1 foot at 8 seconds, becoming sw 2 ft at 3 seconds and se 1 foot
at 9 seconds. 
.sun night...s winds 10 to 15 kt, increasing to 20 to 25 kt after
midnight. seas 2 to 4 ft. wave detail: s 4 ft at 5 seconds and se
3 ft at 11 seconds. showers likely after midnight. 
.mon...se winds 20 to 25 kt, diminishing to 15 to 20 kt in the
afternoon. gusts up to 30 kt. seas 2 to 4 ft. wave detail: s 4 ft
at 6 seconds and se 4 ft at 10 seconds. showers likely. 
.mon night...ne winds 10 to 15 kt. gusts up to 20 kt in the
evening. seas 2 to 3 ft. 
.tue through wed night...sw winds 10 to 15 kt with gusts up to
20 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 150503
cwfbox
expires:202608151800;;211831

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt sat aug 15 2026

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


anz235-151800-
rhode island sound-
103 am edt sat aug 15 2026

.rest of tonight...n winds 5 to 10 kt. seas around 2 ft. wave
detail: w 1 foot at 4 seconds and se 1 foot at 10 seconds. 
.sat...ne winds 5 to 10 kt, becoming s in the afternoon. seas
around 2 ft. wave detail: ne 2 ft at 5 seconds and s 1 foot at
6 seconds. 
.sat night...sw winds 5 to 10 kt. seas 1 foot or less. wave
detail: sw 1 foot at 4 seconds and se 1 foot at 9 seconds. 
.sun...se winds around 5 kt, becoming s 10 to 15 kt in the
afternoon. seas 1 foot or less, then around 2 ft in the
afternoon. wave detail: s 1 foot at 4 seconds and se 1 foot at
9 seconds, becoming s 2 ft at 4 seconds and se 1 foot at
9 seconds. 
.sun night...s winds 10 to 15 kt, increasing to 20 to 25 kt after
midnight. seas 2 to 3 ft, building to 4 to 6 ft after midnight.
wave detail: s 3 ft at 4 seconds and se 1 foot at 9 seconds,
becoming s 6 ft at 6 seconds and se 5 ft at 11 seconds. showers
likely after midnight. 
.mon...se winds 20 to 25 kt, becoming e 15 to 20 kt in the
afternoon. seas 4 to 6 ft. wave detail: s 6 ft at 7 seconds and
se 5 ft at 9 seconds. showers likely, mainly in the morning. 
.mon night...ne winds 10 to 15 kt. seas 2 to 4 ft.
.tue through wed night...sw winds 10 to 15 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 150503
cwfbox
expires:202608151800;;211834

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt sat aug 15 2026

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


anz236-151800-
narragansett bay-
103 am edt sat aug 15 2026

.rest of tonight...n winds 5 to 10 kt. waves 1 foot or less. 
.sat...n winds around 5 kt, becoming s in the afternoon. waves
1 foot or less. 
.sat night...sw winds 5 to 10 kt, becoming nw after midnight.
waves 1 foot or less. 
.sun...ne winds around 5 kt, becoming s 10 to 15 kt with gusts up
to 20 kt in the afternoon. waves 1 foot or less, then around 2 ft
in the afternoon. 
.sun night...s winds 10 to 15 kt, increasing to 15 to 20 kt with
gusts up to 25 kt after midnight. waves 2 to 4 ft. a chance of
showers in the evening, then showers likely after midnight. 
.mon...se winds 15 to 20 kt, becoming e 10 to 15 kt in the
afternoon. gusts up to 25 kt. waves 2 to 4 ft. showers likely,
mainly in the morning. 
.mon night...n winds 5 to 10 kt. waves 2 to 3 ft. 
.tue through wed night...sw winds 10 to 15 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 150503
cwfbox
expires:202608151800;;211822

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt sat aug 15 2026

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


anz250-151800-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
103 am edt sat aug 15 2026

.rest of tonight...n winds 5 to 10 kt. seas around 2 ft. wave
detail: nw 1 foot at 3 seconds and e 1 foot at 10 seconds. 
.sat...n winds 5 to 10 kt, becoming ne in the afternoon. seas
around 2 ft. wave detail: nw 1 foot at 3 seconds and ne 1 foot at
9 seconds. 
.sat night...s winds around 5 kt, becoming w after midnight. seas
1 foot or less. wave detail: s 1 foot at 2 seconds and ne 1 foot
at 7 seconds. 
.sun...se winds around 5 kt, becoming s 10 to 15 kt with gusts up
to 20 kt in the afternoon. seas 1 foot or less, then around 2 ft
in the afternoon. wave detail: nw 1 foot at 2 seconds and e
1 foot at 7 seconds, becoming s 2 ft at 3 seconds and e 1 foot at
8 seconds. 
.sun night...s winds 10 to 15 kt with gusts up to 25 kt. seas
2 to 4 ft. wave detail: s 4 ft at 4 seconds and se 1 foot at
9 seconds. a chance of showers after midnight. 
.mon...se winds 15 to 20 kt with gusts up to 25 kt. seas 3 to
5 ft. wave detail: s 4 ft at 5 seconds and se 4 ft at 10 seconds.
showers likely. 
.mon night...ne winds around 10 kt. gusts up to 20 kt in the
evening. seas 2 to 3 ft. a chance of showers in the evening. 
.tue through wed night...s winds 10 to 15 kt with gusts up 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 150503
cwfbox
expires:202608151800;;211825

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt sat aug 15 2026

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


anz254-151800-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
103 am edt sat aug 15 2026

.rest of tonight...n winds around 10 kt. seas around 2 ft. wave
detail: nw 1 foot at 4 seconds and e 1 foot at 9 seconds. 
.sat...n winds 5 to 10 kt. seas around 2 ft. wave detail: w 2 ft
at 5 seconds and ne 2 ft at 7 seconds. 
.sat night...ne winds around 5 kt, becoming w around 5 kt after
midnight. seas around 2 ft. wave detail: n 2 ft at 6 seconds and
s 1 foot at 6 seconds. 
.sun...s winds around 5 kt, increasing to 5 to 10 kt in the
afternoon. seas around 2 ft. wave detail: s 2 ft at 5 seconds and
e 1 foot at 7 seconds. 
.sun night...s winds 10 to 15 kt with gusts up to 20 kt. seas
2 to 3 ft. wave detail: s 3 ft at 4 seconds and se 1 foot at
8 seconds. a chance of showers after midnight. 
.mon...se winds 20 to 25 kt with gusts up to 30 kt. seas 3 to
5 ft. wave detail: s 5 ft at 5 seconds and se 3 ft at 10 seconds.
showers likely. 
.mon night...ne winds 10 to 15 kt with gusts up to 20 kt. seas
2 to 4 ft. a chance of showers in the evening. 
.tue through wed night...s winds 10 to 15 kt with gusts up 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 150503
cwfbox
expires:202608151800;;211826

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt sat aug 15 2026

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


anz255-151800-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
103 am edt sat aug 15 2026

.rest of tonight...n winds 5 to 10 kt. seas around 2 ft. wave
detail: w 1 foot at 4 seconds and e 1 foot at 10 seconds. 
.sat...ne winds 5 to 10 kt. seas around 2 ft. wave detail: ne
2 ft at 6 seconds and sw 1 foot at 5 seconds. 
.sat night...e winds around 5 kt, becoming s around 5 kt after
midnight. seas around 2 ft in the evening, then 1 foot or less.
wave detail: se 1 foot at 6 seconds, becoming sw 1 foot at
5 seconds and e 1 foot at 8 seconds. 
.sun...s winds around 5 kt, increasing to 5 to 10 kt in the
afternoon. seas 1 foot or less, then around 2 ft in the
afternoon. wave detail: sw 1 foot at 5 seconds and e 1 foot at
8 seconds, becoming s 2 ft at 4 seconds and se 1 foot at
8 seconds. 
.sun night...s winds 10 to 15 kt, increasing to 15 to 20 kt with
gusts up to 25 kt after midnight. seas 2 to 3 ft, building to
3 to 5 ft after midnight. wave detail: s 3 ft at 4 seconds and se
1 foot at 8 seconds, becoming s 5 ft at 5 seconds and se 1 foot
at 9 seconds. a chance of showers after midnight. 
.mon...se winds 20 to 25 kt with gusts up to 30 kt. seas 4 to
6 ft. wave detail: s 6 ft at 6 seconds and se 4 ft at 9 seconds.
showers likely. 
.mon night...ne winds 10 to 15 kt. gusts up to 20 kt in the
evening. seas 3 to 5 ft. 
.tue and tue night...n winds 10 to 15 kt, becoming w around 5 kt.
seas 2 to 4 ft. 
.wed and wed night...sw 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.

$$