fzus51 kbox 160804
cwfbox
expires:202608162100;;278512

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

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


anz231-162100-
cape cod bay-
403 am edt sun aug 16 2026

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

.today...n winds around 5 kt, becoming s 10 to 15 kt with gusts
up to 20 kt this afternoon. seas 1 foot or less, then around 2 ft
this afternoon. wave detail: s 1 foot at 3 seconds and n 1 foot
at 4 seconds, becoming s 1 foot at 3 seconds and ne 1 foot at
3 seconds. 
.tonight...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 ne 1 foot at
3 seconds. 
.mon...se winds 10 to 15 kt with gusts up to 25 kt. seas 2 to
4 ft. wave detail: se 2 ft at 3 seconds and se 1 foot at
11 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 2 ft at
10 seconds. patchy fog in the evening. a chance of showers in the
evening. 
.tue...n winds 5 to 10 kt. seas around 2 ft. wave detail: n 2 ft
at 3 seconds and se 1 foot at 10 seconds. 
.tue night...ne winds around 5 kt, becoming sw around 5 kt after
midnight. seas around 2 ft. wave detail: n 1 foot at 3 seconds
and se 1 foot at 11 seconds. 
.wed and wed night...sw winds 5 to 10 kt. seas around 2 ft. 
.thu...nw winds around 5 kt. seas 1 foot or less. a chance of
showers. 
.thu night...w winds 5 to 10 kt. seas 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 160804
cwfbox
expires:202608162100;;278516

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

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


anz232-162100-
nantucket sound-
403 am edt sun aug 16 2026

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

.today...s winds around 5 kt, increasing to 10 to 15 kt with
gusts up to 20 kt this afternoon. seas 1 foot or less, then
around 2 ft this 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. 
.tonight...s winds 10 to 15 kt. gusts up to 20 kt after midnight.
seas 2 to 3 ft. wave detail: s 2 ft at 3 seconds and e 1 foot at
4 seconds. 
.mon...se winds 15 to 20 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. 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 3 ft. wave detail: se 2 ft
at 5 seconds and se 2 ft at 10 seconds. patchy fog in the
evening. a chance of showers in the evening. 
.tue...n winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. wave detail: ne 2 ft at 3 seconds and w 2 ft at 7 seconds. 
.tue night...n winds 5 to 10 kt, becoming w after midnight. seas
around 2 ft. wave detail: ne 1 foot at 4 seconds and sw 1 foot at
6 seconds. 
.wed and wed night...sw winds 10 to 15 kt. gusts up to 20 kt.
seas around 2 ft. 
.thu and thu night...w 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 160804
cwfbox
expires:202608162100;;278517

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

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


anz233-162100-
vineyard sound-
403 am edt sun aug 16 2026

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

.today...ne winds around 5 kt, becoming s 10 to 15 kt this
afternoon. seas 1 foot or less, then around 2 ft this afternoon.
wave detail: e 1 foot at 2 seconds and sw 1 foot at 4 seconds,
becoming ne 1 foot at 3 seconds and sw 1 foot at 4 seconds. 
.tonight...s winds 10 to 15 kt. gusts up to 20 kt after midnight.
seas 2 to 3 ft. wave detail: s 3 ft at 5 seconds and e 1 foot at
4 seconds. a chance of showers after midnight. 
.mon...se winds 15 to 20 kt with gusts up to 25 kt. seas 3 to
4 ft. wave detail: se 4 ft at 5 seconds and se 2 ft 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:
sw 3 ft at 7 seconds and se 3 ft at 12 seconds. patchy fog in the
evening. 
.tue...n winds 5 to 10 kt. seas 2 to 3 ft. wave detail: sw 3 ft
at 7 seconds and se 3 ft at 8 seconds. 
.tue night...s winds around 5 kt, becoming sw after midnight.
seas around 2 ft. wave detail: sw 2 ft at 6 seconds and se 2 ft
at 9 seconds. 
.wed and wed night...sw winds 10 to 15 kt with gusts up to 20 kt.
seas around 2 ft. 
.thu and thu night...w 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 160804
cwfbox
expires:202608162100;;278518

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

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


anz234-162100-
buzzards bay-
403 am edt sun aug 16 2026

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

.today...ne winds around 5 kt, becoming s 10 to 15 kt with gusts
up to 20 kt this afternoon. seas 1 foot or less, then around 2 ft
this afternoon. wave detail: e 1 foot at 3 seconds and s 1 foot
at 3 seconds, becoming s 1 foot at 3 seconds and ne 1 foot at
3 seconds. 
.tonight...s winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. seas 2 to 3 ft. wave detail: s 2 ft at 3 seconds and se
1 foot at 10 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: se 3 ft at 5 seconds and se 2 ft 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:
se 3 ft at 9 seconds and sw 2 ft at 7 seconds. patchy fog in the
evening. 
.tue...n winds 5 to 10 kt. seas around 2 ft. wave detail: sw 2 ft
at 7 seconds and se 2 ft at 7 seconds. 
.tue night...s winds around 5 kt, becoming sw after midnight.
seas around 2 ft. wave detail: se 2 ft at 9 seconds and ne 1 foot
at 2 seconds. 
.wed and wed night...sw winds 10 to 15 kt with gusts up to 20 kt.
seas 2 to 3 ft. 
.thu and thu night...w 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 160804
cwfbox
expires:202608162100;;278519

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

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


anz235-162100-
rhode island sound-
403 am edt sun aug 16 2026

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

.today...ne winds around 5 kt, becoming s 10 to 15 kt this
afternoon. seas 1 foot or less, then around 2 ft this afternoon.
wave detail: e 1 foot at 3 seconds and s 1 foot at 4 seconds,
becoming s 2 ft at 5 seconds and e 1 foot at 2 seconds. 
.tonight...s winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. 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 4 to
6 ft. wave detail: se 5 ft at 6 seconds and se 4 ft at
10 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 5 ft at 13 seconds and se 4 ft at 6 seconds. 
.tue...n winds 5 to 10 kt. seas 2 to 4 ft. wave detail: s 4 ft at
7 seconds and ne 1 foot at 3 seconds. 
.tue night...sw winds 5 to 10 kt. seas 2 to 3 ft. wave detail: s
3 ft at 7 seconds and ne 1 foot at 3 seconds. 
.wed and wed night...sw winds 10 to 15 kt. gusts up to 20 kt.
seas 2 to 3 ft. 
.thu and thu night...w winds 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 160804
cwfbox
expires:202608162100;;278522

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

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


anz236-162100-
narragansett bay-
403 am edt sun aug 16 2026

.today...n winds around 5 kt, becoming s 10 to 15 kt this
afternoon. waves 1 foot or less, then around 2 ft this afternoon.
.tonight...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...n winds 5 to 10 kt, becoming ne in the afternoon. waves
around 2 ft. 
.tue night...sw winds around 5 kt. waves around 2 ft. 
.wed and wed night...sw winds 10 to 15 kt, diminishing to 5 to
10 kt. waves around 2 ft. 
.thu and 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 160804
cwfbox
expires:202608162100;;278510

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

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


anz250-162100-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
403 am edt sun aug 16 2026

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

.today...ne winds around 5 kt, becoming se 10 to 15 kt with gusts
up to 20 kt this afternoon. seas 1 foot or less, then around 2 ft
this afternoon. wave detail: sw 1 foot at 3 seconds and ne 1 foot
at 3 seconds, becoming s 1 foot at 2 seconds and ne 1 foot at
3 seconds. 
.tonight...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...n winds 5 to 10 kt. seas 2 to 3 ft. wave detail: se 3 ft
at 9 seconds and nw 2 ft at 4 seconds. 
.tue night...e winds around 5 kt, becoming sw around 5 kt after
midnight. seas 2 to 3 ft. wave detail: se 3 ft at 8 seconds and
sw 2 ft at 6 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...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 160804
cwfbox
expires:202608162100;;278513

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

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


anz254-162100-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
403 am edt sun aug 16 2026

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

.today...s winds around 5 kt, increasing to 5 to 10 kt this
afternoon. seas around 2 ft. wave detail: s 2 ft at 6 seconds and
n 1 foot at 4 seconds. 
.tonight...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 3 to 5 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 3 to 5 ft. wave detail: se 4 ft at
5 seconds and se 3 ft at 10 seconds. a chance of showers. patchy
fog in the evening with vsby 1 to 3 nm. 
.tue...n winds 10 to 15 kt with gusts up to 20 kt. seas 3 to
4 ft. wave detail: s 4 ft at 8 seconds and nw 3 ft at 6 seconds. 
.tue night...n winds 5 to 10 kt, becoming w after midnight. seas
2 to 4 ft. wave detail: se 3 ft at 8 seconds and sw 2 ft at
7 seconds. 
.wed and wed night...sw winds 5 to 10 kt. seas 2 to 3 ft. 
.thu and thu night...w winds 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 160804
cwfbox
expires:202608162100;;278514

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

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


anz255-162100-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
403 am edt sun aug 16 2026

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

.today...s winds around 5 kt, increasing to 5 to 10 kt this
afternoon. seas 1 foot or less, then around 2 ft this 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. 
.tonight...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 4 to
6 ft. wave detail: se 5 ft at 7 seconds and e 2 ft at 4 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 4 ft at 7 seconds and se
4 ft at 8 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: nw 4 ft
at 7 seconds and s 4 ft at 8 seconds. 
.tue night...n winds 5 to 10 kt, becoming w after midnight. seas
2 to 3 ft. wave detail: s 3 ft at 7 seconds and se 3 ft at
8 seconds. 
.wed and wed night...sw winds 5 to 10 kt. seas 2 to 3 ft. 
.thu and thu night...sw winds around 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.

$$