fzus51 kbox 180203
cwfbox
expires:202608181500;;910800

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1003 pm edt mon aug 17 2026

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


anz231-181500-
cape cod bay-
1003 pm edt mon aug 17 2026

.overnight...e winds around 5 kt. seas 1 foot or less. wave
detail: se 1 foot at 3 seconds. patchy fog. a slight chance of
showers. vsby 1 to 3 nm, decreasing to 1 nm or less. 
.tue...n winds around 5 kt. seas 1 foot or less, then around 2 ft
in the afternoon. wave detail: e 1 foot at 2 seconds and s 1 foot
at 5 seconds, becoming sw 1 foot at 2 seconds and ne 1 foot at
3 seconds. patchy fog in the morning with vsby 1 nm or less. 
.tue night...n winds around 5 kt. seas around 2 ft. wave detail:
w 1 foot at 2 seconds and ne 1 foot at 4 seconds. patchy fog
after midnight with vsby 1 nm or less. 
.wed...w winds around 5 kt, becoming s in the afternoon. seas
around 2 ft. wave detail: sw 1 foot at 2 seconds and e 1 foot at
5 seconds. patchy fog in the morning with vsby 1 to 3 nm. 
.wed night...sw winds 5 to 10 kt. seas around 2 ft. wave detail:
sw 1 foot at 2 seconds and e 1 foot at 4 seconds. 
.thu and thu night...nw winds around 5 kt. seas 1 foot or less.
wave detail: w 1 foot at 2 seconds and e 1 foot at 6 seconds. a
chance of showers. 
.fri through sat night...e 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 180203
cwfbox
expires:202608181500;;910804

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1003 pm edt mon aug 17 2026

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


anz232-181500-
nantucket sound-
1003 pm edt mon aug 17 2026

.overnight...se winds around 10 kt, becoming ne. seas 2 to 3 ft.
wave detail: se 2 ft at 6 seconds. patchy fog. a slight chance of
showers. vsby 1 to 3 nm, decreasing to 1 nm or less. 
.tue...n winds 5 to 10 kt. seas 2 to 3 ft. wave detail: ne 1 foot
at 4 seconds and sw 1 foot at 6 seconds. patchy fog in the
morning with vsby 1 nm or less. 
.tue night...nw winds around 5 kt. seas around 2 ft. wave detail:
sw 1 foot at 6 seconds and e 1 foot at 8 seconds. patchy fog.
vsby 1 to 3 nm. 
.wed...w winds around 5 kt, becoming sw 10 to 15 kt in the
afternoon. seas around 2 ft. wave detail: sw 2 ft at 6 seconds
and e 1 foot at 8 seconds. patchy fog in the morning with vsby
1 nm or less. 
.wed night...sw winds 10 to 15 kt, diminishing to 5 to 10 kt
after midnight. seas around 2 ft. wave detail: sw 2 ft at
3 seconds and e 1 foot at 7 seconds. 
.thu and thu night...nw winds 5 to 10 kt. seas around 2 ft. wave
detail: w 1 foot at 4 seconds and e 1 foot at 7 seconds. a chance
of showers. 
.fri through sat night...e 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 180203
cwfbox
expires:202608181500;;910805

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1003 pm edt mon aug 17 2026

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


anz233-181500-
vineyard sound-
1003 pm edt mon aug 17 2026

.overnight...e winds around 5 kt, becoming n. seas 2 to 3 ft.
wave detail: sw 3 ft at 6 seconds and e 1 foot at 4 seconds.
patchy fog. vsby 1 nm or less. 
.tue...n winds 5 to 10 kt. seas 2 to 3 ft. wave detail: sw 2 ft
at 6 seconds and n 1 foot at 3 seconds. patchy fog in the morning
with vsby 1 nm or less. 
.tue night...ne winds around 5 kt, becoming nw after midnight.
seas around 2 ft. wave detail: sw 2 ft at 6 seconds and ne 1 foot
at 6 seconds. patchy fog after midnight with vsby 1 nm or less. 
.wed...w winds around 5 kt, becoming sw 10 to 15 kt in the
afternoon. seas around 2 ft. wave detail: sw 2 ft at 5 seconds
and se 1 foot at 9 seconds. patchy fog in the morning with vsby
1 nm or less. 
.wed night...sw winds 10 to 15 kt, diminishing to 5 to 10 kt
after midnight. seas around 2 ft. wave detail: sw 2 ft at
4 seconds and se 1 foot at 9 seconds. 
.thu and thu night...nw winds 5 to 10 kt. seas around 2 ft. wave
detail: sw 1 foot at 5 seconds and se 1 foot at 8 seconds. a
chance of showers. 
.fri through sat...e winds 5 to 10 kt. seas around 2 ft. a chance
of showers. 
.sat night...e winds 5 to 10 kt. seas around 2 ft. showers
likely.  

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 180203
cwfbox
expires:202608181500;;910806

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1003 pm edt mon aug 17 2026

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


anz234-181500-
buzzards bay-
1003 pm edt mon aug 17 2026

.overnight...e winds around 5 kt, becoming n. seas around 2 ft.
wave detail: s 2 ft at 6 seconds and e 1 foot at 2 seconds.
patchy fog. vsby 1 to 3 nm, decreasing to 1 nm or less. 
.tue...n winds around 5 kt. seas around 2 ft. wave detail: ne
1 foot at 2 seconds and sw 1 foot at 6 seconds. patchy fog in the
morning with vsby 1 nm or less. 
.tue night...n winds around 5 kt. seas around 2 ft. wave detail:
e 1 foot at 3 seconds and sw 1 foot at 6 seconds. patchy fog
after midnight with vsby 1 nm or less. 
.wed...w winds around 5 kt, becoming sw 10 to 15 kt with gusts up
to 20 kt in the afternoon. seas around 2 ft. wave detail: sw
1 foot at 5 seconds and se 1 foot at 8 seconds. patchy fog in the
morning with vsby 1 nm or less. 
.wed night...sw winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. seas around 2 ft. wave
detail: sw 2 ft at 4 seconds and se 1 foot at 10 seconds. 
.thu and thu night...nw winds 5 to 10 kt. seas around 2 ft. wave
detail: sw 1 foot at 4 seconds and se 1 foot at 9 seconds. a
chance of showers. 
.fri through sat night...e 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 180203
cwfbox
expires:202608181500;;910807

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1003 pm edt mon aug 17 2026

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


anz235-181500-
rhode island sound-
1003 pm edt mon aug 17 2026

.overnight...ne winds 5 to 10 kt, becoming n. seas 2 to 4 ft.
wave detail: se 4 ft at 6 seconds. patchy fog. vsby 1 to 3 nm,
decreasing to 1 nm or less. 
.tue...n winds 5 to 10 kt, becoming nw in the afternoon. seas
2 to 3 ft. wave detail: se 3 ft at 7 seconds. patchy fog in the
morning with vsby 1 nm or less. 
.tue night...sw winds 5 to 10 kt, becoming w after midnight. seas
2 to 3 ft. wave detail: s 3 ft at 7 seconds and se 2 ft at
8 seconds. patchy fog after midnight with vsby 1 nm or less. 
.wed...w winds around 5 kt, becoming sw 10 to 15 kt in the
afternoon. seas 2 to 3 ft. wave detail: s 2 ft at 7 seconds and
se 2 ft at 8 seconds. patchy fog in the morning with vsby 1 nm or
less. 
.wed night...sw winds 10 to 15 kt, diminishing to 5 to 10 kt
after midnight. seas 2 to 3 ft. wave detail: sw 2 ft at 4 seconds
and se 2 ft at 8 seconds. 
.thu and thu night...nw winds 5 to 10 kt. seas around 2 ft. wave
detail: s 2 ft at 7 seconds. a chance of showers. 
.fri through sat night...e 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 180203
cwfbox
expires:202608181500;;910810

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1003 pm edt mon aug 17 2026

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


anz236-181500-
narragansett bay-
1003 pm edt mon aug 17 2026

.overnight...n winds around 5 kt. waves around 2 ft. patchy fog.
vsby 1 to 3 nm, decreasing to 1 nm or less. 
.tue...n winds around 5 kt. waves around 2 ft. patchy fog in the
morning with vsby 1 nm or less. 
.tue night...s winds around 5 kt, becoming nw around 5 kt after
midnight. waves around 2 ft. patchy fog after midnight with vsby
1 to 3 nm. 
.wed...w winds around 5 kt, becoming sw in the afternoon. waves
around 2 ft. patchy fog in the morning. 
.wed night...sw winds 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. 
.fri through sat night...e 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 180203
cwfbox
expires:202608181500;;910798

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1003 pm edt mon aug 17 2026

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


anz250-181500-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
1003 pm edt mon aug 17 2026

.overnight...se winds 5 to 10 kt, becoming e. seas around 2 ft.
wave detail: se 2 ft at 4 seconds and se 1 foot at 10 seconds.
patchy fog. a slight chance of showers. vsby 1 to 3 nm,
decreasing to 1 nm or less. 
.tue...n winds around 5 kt. seas 2 to 4 ft. wave detail: se 3 ft
at 9 seconds and sw 2 ft at 6 seconds. patchy fog in the morning
with vsby 1 nm or less. 
.tue night...n winds around 5 kt. seas 2 to 4 ft. wave detail: se
4 ft at 9 seconds and w 2 ft at 7 seconds. patchy fog. vsby 1 nm
or less. 
.wed...w winds around 5 kt, becoming s in the afternoon. seas
2 to 3 ft. wave detail: se 3 ft at 8 seconds and sw 2 ft at
7 seconds. patchy fog in the morning with vsby 1 nm or less. 
.wed night...sw winds 5 to 10 kt. seas 2 to 3 ft. wave detail: se
3 ft at 7 seconds and s 2 ft at 4 seconds. 
.thu and thu night...nw winds around 5 kt. seas 2 to 3 ft. wave
detail: se 2 ft at 8 seconds and sw 1 foot at 3 seconds. 
.fri and fri night...e winds 5 to 10 kt. seas around 2 ft. 
.sat and sat night...e 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 180203
cwfbox
expires:202608181500;;910801

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1003 pm edt mon aug 17 2026

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


anz254-181500-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
1003 pm edt mon aug 17 2026

...small craft advisory in effect until 2 am edt tuesday...

.overnight...e winds 5 to 10 kt. seas 2 to 4 ft. wave detail: s
3 ft at 6 seconds and se 1 foot at 10 seconds. patchy fog. a
slight chance of showers. vsby 1 nm or less. 
.tue...n winds 5 to 10 kt. seas 2 to 4 ft. wave detail: se 4 ft
at 9 seconds and s 3 ft at 7 seconds. patchy fog in the morning
with vsby 1 nm or less. 
.tue night...nw winds around 5 kt. seas 2 to 4 ft. wave detail:
se 4 ft at 8 seconds and sw 2 ft at 7 seconds. patchy fog. vsby
1 nm or less. 
.wed...w winds around 5 kt, becoming sw in the afternoon. seas
2 to 3 ft. wave detail: se 3 ft at 8 seconds and s 2 ft at
7 seconds. patchy fog in the morning with vsby 1 nm or less. 
.wed night and thu...sw winds 5 to 10 kt. seas 2 to 3 ft. wave
detail: se 3 ft at 7 seconds and sw 1 foot at 5 seconds. 
.thu night...sw winds 5 to 10 kt, becoming w after midnight. seas
2 to 3 ft. wave detail: se 2 ft at 8 seconds and sw 1 foot at
4 seconds. a chance of showers. 
.fri through sat night...se 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 180203
cwfbox
expires:202608181500;;910802

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1003 pm edt mon aug 17 2026

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


anz255-181500-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
1003 pm edt mon aug 17 2026

...small craft advisory in effect until 2 am edt tuesday...

.overnight...se winds 5 to 10 kt, becoming ne. seas 3 to 4 ft.
wave detail: se 4 ft at 6 seconds. patchy fog. a slight chance of
showers. vsby 1 nm or less. 
.tue...n winds 5 to 10 kt. seas 3 to 4 ft. wave detail: s 4 ft at
7 seconds and e 2 ft at 8 seconds. patchy fog in the morning with
vsby 1 nm or less. 
.tue night...nw winds around 5 kt. seas 2 to 4 ft. wave detail: s
3 ft at 7 seconds and se 3 ft at 8 seconds. patchy fog. vsby 1 nm
or less. 
.wed...sw winds 5 to 10 kt. seas 2 to 3 ft. wave detail: se 2 ft
at 7 seconds. patchy fog in the morning with vsby 1 nm or less. 
.wed night and thu...sw winds 5 to 10 kt. seas 2 to 3 ft. wave
detail: sw 2 ft at 6 seconds and e 2 ft at 7 seconds. 
.thu night...sw winds 5 to 10 kt, becoming nw after midnight.
seas 2 to 3 ft. wave detail: se 2 ft at 8 seconds and sw 1 foot
at 5 seconds. a chance of showers and tstms. 
.fri through sat night...se 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.

$$