fzus51 kbox 160504
cwfbox
expires:202608161800;;269355

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt sun aug 16 2026

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


anz231-161800-
cape cod bay-
103 am edt sun aug 16 2026

...small craft advisory in effect from monday morning through
monday evening...

.rest of tonight...w winds around 5 kt. seas 1 foot or less. wave
detail: nw 1 foot at 4 seconds and se 1 foot at 11 seconds. 
.sun...n 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: n 1 foot at 4 seconds and se
1 foot at 12 seconds, becoming s 1 foot at 3 seconds and ne
1 foot at 3 seconds. 
.sun night...s winds 10 to 15 kt with gusts up to 20 kt. seas
2 to 3 ft. wave detail: s 1 foot at 2 seconds and e 1 foot at
3 seconds. 
.mon...se winds 10 to 15 kt with gusts up to 25 kt. seas 2 to
3 ft. wave detail: se 2 ft at 3 seconds and se 1 foot at
10 seconds. a chance of showers in the morning, then showers
likely in the afternoon. patchy fog in the afternoon with vsby
1 to 3 nm. 
.mon night...e winds 5 to 10 kt, becoming n after midnight. seas
around 2 ft. wave detail: se 2 ft at 4 seconds and se 1 foot at
10 seconds. patchy fog in the evening. a chance of showers in the
evening. 
.tue and tue night...sw winds 5 to 10 kt. seas around 2 ft. wave
detail: n 1 foot at 3 seconds and se 1 foot at 9 seconds. 
.wed and wed night...sw winds 5 to 10 kt. seas around 2 ft. 
.thu...sw winds 5 to 10 kt. seas around 2 ft. a chance of
showers. 
.thu night...nw 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 160504
cwfbox
expires:202608161800;;269359

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt sun aug 16 2026

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


anz232-161800-
nantucket sound-
103 am edt sun aug 16 2026

...small craft advisory in effect from monday morning through
monday evening...

.rest of tonight...w winds around 5 kt. seas 1 foot or less. wave
detail: sw 1 foot at 3 seconds and ne 1 foot at 3 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 ne
1 foot at 3 seconds, becoming s 2 ft at 3 seconds and ne 1 foot
at 3 seconds. 
.sun night...s winds 10 to 15 kt. gusts up to 20 kt after
midnight. seas 2 to 3 ft. wave detail: se 2 ft at 4 seconds and
se 1 foot at 10 seconds. 
.mon...se winds 15 to 20 kt with gusts up to 25 kt. seas 3 to
5 ft. wave detail: se 3 ft at 4 seconds and se 1 foot at
10 seconds. a chance of showers in the morning, then showers
likely in the afternoon. patchy fog in the afternoon with vsby
1 to 3 nm. 
.mon night...ne winds 10 to 15 kt with gusts up to 20 kt,
becoming n after midnight. seas 2 to 4 ft. wave detail: s 3 ft at
5 seconds and se 1 foot at 10 seconds. patchy fog in the evening.
a chance of showers in the evening. 
.tue and tue night...w winds 10 to 15 kt with gusts up to 20 kt.
seas 2 to 3 ft. wave detail: n 2 ft at 4 seconds and e 1 foot at
4 seconds. 
.wed and wed night...sw winds 10 to 15 kt. gusts up to 20 kt.
seas around 2 ft. 
.thu and thu night...sw winds 10 to 15 kt with gusts up to 20 kt,
becoming nw. 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 160504
cwfbox
expires:202608161800;;269360

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt sun aug 16 2026

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


anz233-161800-
vineyard sound-
103 am edt sun aug 16 2026

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

.rest of tonight...sw winds around 5 kt. seas 1 foot or less.
wave detail: se 1 foot at 3 seconds and sw 1 foot at 3 seconds. 
.sun...ne 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: e 1 foot at 2 seconds and sw 1 foot at
4 seconds, becoming sw 1 foot at 4 seconds and ne 1 foot at
5 seconds. 
.sun night...s winds 10 to 15 kt. gusts up to 20 kt after
midnight. seas 2 to 4 ft. wave detail: s 3 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 6 seconds and se 1 foot at
10 seconds. patchy fog. showers likely. vsby 1 to 3 nm in the
afternoon. 
.mon night...n winds around 10 kt. seas 2 to 4 ft. wave detail: s
3 ft at 6 seconds and se 2 ft at 9 seconds. patchy fog in the
evening. 
.tue and tue night...sw winds 5 to 10 kt. seas 2 to 3 ft. wave
detail: w 3 ft at 6 seconds and s 3 ft at 7 seconds. 
.wed and wed night...sw winds 10 to 15 kt with gusts up to 20 kt.
seas around 2 ft. 
.thu...sw winds 10 to 15 kt. seas around 2 ft. a chance of
showers. 
.thu night...nw winds 10 to 15 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 160504
cwfbox
expires:202608161800;;269361

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt sun aug 16 2026

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


anz234-161800-
buzzards bay-
103 am edt sun aug 16 2026

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

.rest of tonight...w winds around 5 kt. seas 1 foot or less. wave
detail: sw 1 foot at 3 seconds and e 1 foot at 3 seconds. 
.sun...ne 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: e 1 foot at 3 seconds and sw
1 foot at 3 seconds, becoming s 1 foot at 3 seconds and ne 1 foot
at 3 seconds. 
.sun 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 9 seconds. a chance of showers after midnight. 
.mon...se winds 15 to 20 kt with gusts up to 25 kt. seas 2 to
4 ft. wave detail: s 4 ft at 6 seconds and se 1 foot at
10 seconds. patchy fog. showers likely. vsby 1 to 3 nm in the
afternoon. 
.mon night...n winds around 10 kt. seas 2 to 3 ft. wave detail: s
3 ft at 7 seconds and se 2 ft at 9 seconds. patchy fog in the
evening. 
.tue and tue night...sw winds 5 to 10 kt. seas around 2 ft. wave
detail: w 2 ft at 6 seconds and se 2 ft at 7 seconds. 
.wed and wed night...sw winds 10 to 15 kt with gusts up to 20 kt.
seas 2 to 3 ft. 
.thu...sw winds 10 to 15 kt. seas around 2 ft. a chance of
showers. 
.thu night...nw 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 160504
cwfbox
expires:202608161800;;269362

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt sun aug 16 2026

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


anz235-161800-
rhode island sound-
103 am edt sun aug 16 2026

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

.rest of tonight...nw winds around 5 kt. seas 1 foot or less.
wave detail: s 1 foot at 4 seconds and se 1 foot at 9 seconds. 
.sun...ne 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: se 1 foot at 4 seconds and se 1 foot at
9 seconds, becoming se 2 ft at 3 seconds and se 1 foot at
9 seconds. 
.sun night...s winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. seas around 2 ft, building to 3 to 5 ft after midnight.
wave detail: s 2 ft at 4 seconds and se 1 foot at 9 seconds,
becoming s 4 ft at 4 seconds and se 1 foot at 8 seconds. a chance
of showers after midnight. 
.mon...se winds 15 to 20 kt with gusts up to 25 kt. seas 5 to
7 ft. wave detail: s 5 ft at 7 seconds and se 2 ft at 9 seconds.
patchy fog. showers likely. vsby 1 to 3 nm in the morning. 
.mon night...n winds around 10 kt. seas 3 to 5 ft. wave detail:
se 4 ft at 7 seconds. 
.tue and tue night...sw winds 5 to 10 kt. seas 2 to 4 ft. wave
detail: s 4 ft at 7 seconds and e 2 ft at 7 seconds. 
.wed and wed night...sw winds 10 to 15 kt. gusts up to 20 kt.
seas 2 to 3 ft. 
.thu...sw winds 10 to 15 kt. seas 2 to 3 ft. a chance of showers.
.thu night...nw winds 10 to 15 kt. seas 2 to 3 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 160504
cwfbox
expires:202608161800;;269365

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt sun aug 16 2026

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


anz236-161800-
narragansett bay-
103 am edt sun aug 16 2026

.rest of tonight...nw winds around 5 kt. waves 1 foot or less. 
.sun...n winds around 5 kt, becoming s 10 to 15 kt in the
afternoon. waves 1 foot or less, then around 2 ft in the
afternoon. 
.sun night...s winds 10 to 15 kt. gusts up to 20 kt after
midnight. waves 2 to 3 ft. patchy fog after midnight. 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. patchy fog.
showers likely. 
.mon night...n winds 5 to 10 kt. waves 2 to 3 ft. 
.tue and tue night...sw winds 5 to 10 kt. waves 2 to 3 ft. 
.wed and wed night...sw winds 10 to 15 kt, diminishing to 5 to
10 kt. waves around 2 ft. 
.thu...sw winds 5 to 10 kt. waves around 2 ft. a chance of
showers. 
.thu night...nw winds 5 to 10 kt. waves 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 160504
cwfbox
expires:202608161800;;269353

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt sun aug 16 2026

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


anz250-161800-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
103 am edt sun aug 16 2026

...small craft advisory in effect from monday morning through
monday evening...

.rest of tonight...nw winds around 5 kt. seas 1 foot or less.
wave detail: w 1 foot at 2 seconds and n 1 foot at 3 seconds. 
.sun...ne winds around 5 kt, becoming se 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: n 1 foot at 3 seconds and se
1 foot at 10 seconds, becoming s 1 foot at 2 seconds and n 1 foot
at 3 seconds.
.sun night...s winds 10 to 15 kt with gusts up to 20 kt. seas
2 to 3 ft. wave detail: s 2 ft at 4 seconds and e 1 foot at
3 seconds. 
.mon...s winds 10 to 15 kt with gusts up to 25 kt. seas 3 to
4 ft. wave detail: se 3 ft at 4 seconds and se 1 foot at
10 seconds. patchy fog. a chance of showers in the morning, then
showers likely in the afternoon with vsby 1 to 3 nm. 
.mon night...e winds 5 to 10 kt with gusts up to 20 kt, becoming
n after midnight. seas 2 to 4 ft. wave detail: se 3 ft at
5 seconds and se 1 foot at 10 seconds. patchy fog in the evening.
a chance of showers in the evening with vsby 1 to 3 nm. 
.tue and tue night...sw winds 5 to 10 kt. seas 2 to 3 ft. wave
detail: se 3 ft at 7 seconds and nw 1 foot at 5 seconds. 
.wed and wed night...sw winds 5 to 10 kt. gusts up to 20 kt. seas
2 to 3 ft. 
.thu and thu night...sw winds 5 to 10 kt, becoming nw. seas 2 to
3 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 160504
cwfbox
expires:202608161800;;269356

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt sun aug 16 2026

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


anz254-161800-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
103 am edt sun aug 16 2026

...small craft advisory in effect from monday morning through
monday evening...

.rest of tonight...w winds around 5 kt. seas around 2 ft. wave
detail: n 1 foot at 4 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
n 1 foot at 4 seconds. 
.sun night...s winds 10 to 15 kt with gusts up to 20 kt. seas
2 to 3 ft. wave detail: s 2 ft at 4 seconds and ne 1 foot at
3 seconds. 
.mon...s winds 10 to 15 kt, becoming se 15 to 20 kt in the
afternoon. gusts up to 25 kt. seas 4 to 6 ft. wave detail: se
4 ft at 5 seconds and se 1 foot at 9 seconds. a chance of showers
in the morning, then showers likely in the afternoon. patchy fog
in the afternoon with vsby 1 to 3 nm. 
.mon night...e winds 10 to 15 kt with gusts up to 20 kt, becoming
n after midnight. seas 4 to 6 ft, subsiding to 3 to 4 ft after
midnight. wave detail: s 4 ft at 6 seconds and se 3 ft at
10 seconds, becoming se 4 ft at 6 seconds. a chance of showers.
patchy fog in the evening with vsby 1 to 3 nm. 
.tue and tue night...w winds 10 to 15 kt with gusts up to 20 kt.
seas 2 to 4 ft. wave detail: s 4 ft at 7 seconds and nw 2 ft at
5 seconds. 
.wed and wed night...sw winds 5 to 10 kt. seas 2 to 3 ft. 
.thu and thu night...sw winds 10 to 15 kt, becoming nw 5 to
10 kt. seas 2 to 3 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 160504
cwfbox
expires:202608161800;;269357

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt sun aug 16 2026

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


anz255-161800-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
103 am edt sun aug 16 2026

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

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

$$