fzus51 kbox 170504
cwfbox
expires:202608171800;;327841

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

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


anz231-171800-
cape cod bay-
103 am edt mon aug 17 2026

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

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 170504
cwfbox
expires:202608171800;;327845

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

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


anz232-171800-
nantucket sound-
103 am edt mon aug 17 2026

...small craft advisory in effect from 8 am edt this morning
through this evening...

.rest of tonight...s winds around 15 kt with gusts up to 20 kt.
seas 2 to 3 ft. wave detail: se 2 ft at 3 seconds and se 1 foot
at 10 seconds. a slight chance of showers. 
.mon...s winds around 15 kt with gusts up to 20 kt. seas 3 to
4 ft. wave detail: se 2 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 nm or less. 
.mon night...se winds 10 to 15 kt with gusts up to 20 kt,
becoming nw 5 to 10 kt after midnight. seas 2 to 4 ft. wave
detail: s 2 ft at 6 seconds and se 2 ft at 10 seconds. patchy
fog. a chance of showers in the evening. vsby 1 nm or less,
increasing to 1 to 3 nm after midnight. 
.tue...n winds 5 to 10 kt. seas 2 to 3 ft. wave detail: ne 1 foot
at 3 seconds and sw 1 foot at 7 seconds. patchy fog in the
morning with vsby 1 to 3 nm. 
.tue night...nw winds 5 to 10 kt. seas around 2 ft. wave detail:
ne 1 foot at 3 seconds and sw 1 foot at 6 seconds. 
.wed and wed night...sw winds 10 to 15 kt. seas around 2 ft. wave
detail: sw 2 ft at 4 seconds and e 1 foot at 7 seconds. 
.thu...w winds 5 to 10 kt. seas around 2 ft. 
.thu night and fri...w winds 5 to 10 kt, becoming ne. seas around
2 ft. a chance of showers. 
.fri night...e 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 170504
cwfbox
expires:202608171800;;327846

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

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


anz233-171800-
vineyard sound-
103 am edt mon aug 17 2026

...small craft advisory in effect through this evening...

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

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 170504
cwfbox
expires:202608171800;;327847

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

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


anz234-171800-
buzzards bay-
103 am edt mon aug 17 2026

...small craft advisory in effect through this evening...

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

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 170504
cwfbox
expires:202608171800;;327848

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

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


anz235-171800-
rhode island sound-
103 am edt mon aug 17 2026

...small craft advisory in effect through this evening...

.rest of tonight...s winds around 15 kt with gusts up to 20 kt.
seas 2 to 4 ft. wave detail: s 3 ft at 4 seconds and se 1 foot at
9 seconds. a chance of showers.
.mon...se winds 15 to 20 kt. seas 4 to 5 ft. wave detail: s 4 ft
at 5 seconds and se 1 foot at 9 seconds. patchy fog. showers,
mainly in the morning. vsby 1 to 3 nm, decreasing to 1 nm or less
in the afternoon. 
.mon night...ne winds 5 to 10 kt, becoming n after midnight. seas
3 to 5 ft. wave detail: s 5 ft at 9 seconds and se 4 ft at
6 seconds. patchy fog. vsby 1 nm or less, increasing to 1 to 3 nm
after midnight. 
.tue...n winds 5 to 10 kt, becoming w in the afternoon. seas 2 to
3 ft. wave detail: s 3 ft at 7 seconds and ne 1 foot at
3 seconds. patchy fog in the morning with vsby 1 to 3 nm. 
.tue night...sw winds around 5 kt, becoming w after midnight.
seas 2 to 3 ft. wave detail: se 3 ft at 8 seconds and s 2 ft at
7 seconds. 
.wed and wed night...sw winds 10 to 15 kt. seas 2 to 3 ft. wave
detail: se 3 ft at 7 seconds. 
.thu...w winds 5 to 10 kt. seas around 2 ft. 
.thu night...w winds 5 to 10 kt. seas around 2 ft. a chance of
showers. 
.fri and fri night...e 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 170504
cwfbox
expires:202608171800;;327851

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

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


anz236-171800-
narragansett bay-
103 am edt mon aug 17 2026

.rest of tonight...s winds 10 to 15 kt with gusts up to 20 kt.
waves 2 to 3 ft. a chance of showers. 
.mon...se winds 10 to 15 kt with gusts up to 20 kt. waves 2 to
4 ft. patchy fog. showers likely, mainly in the morning. vsby
1 nm or less in the afternoon. 
.mon night...ne winds 5 to 10 kt, becoming n after midnight.
waves 2 to 3 ft. patchy fog. vsby 1 nm or less, increasing to
1 to 3 nm after midnight. 
.tue...n winds around 5 kt. waves around 2 ft. patchy fog in the
morning with vsby 1 to 3 nm. 
.tue night...s winds around 5 kt, becoming nw after midnight.
waves around 2 ft. 
.wed and wed night...sw winds 5 to 10 kt. waves around 2 ft. 
.thu...w winds 5 to 10 kt. waves around 2 ft. 
.thu night...w winds 5 to 10 kt. waves around 2 ft. a chance of
showers. 
.fri and fri night...e winds 5 to 10 kt. waves 1 foot or less.  

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 170504
cwfbox
expires:202608171800;;327839

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

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


anz250-171800-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
103 am edt mon aug 17 2026

.rest of tonight...s winds around 15 kt with gusts up to 20 kt.
seas 2 to 4 ft. wave detail: se 2 ft at 4 seconds and se 1 foot
at 10 seconds. a slight chance of showers. 
.mon...s winds 10 to 15 kt with gusts up to 20 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. patchy fog in the afternoon with
vsby 1 to 3 nm. 
.mon night...se winds 5 to 10 kt, becoming ne after midnight.
seas 2 to 4 ft. wave detail: se 3 ft at 4 seconds and se 1 foot
at 10 seconds. patchy fog. a chance of showers. vsby 1 to 3 nm. 
.tue...n winds 5 to 10 kt. seas 2 to 4 ft. wave detail: se 4 ft
at 8 seconds and se 2 ft at 5 seconds. patchy fog in the morning
with vsby 1 to 3 nm. 
.tue night...n winds around 5 kt, becoming nw after midnight.
seas 2 to 4 ft. wave detail: se 4 ft at 8 seconds and sw 4 ft at
11 seconds. 
.wed and wed 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 4 seconds. 
.thu through fri night...e 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 170504
cwfbox
expires:202608171800;;327842

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

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


anz254-171800-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
103 am edt mon aug 17 2026

...small craft advisory in effect from 8 am edt this morning
through late tonight...

.rest of 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 20 kt. seas 3 to
5 ft. wave detail: se 3 ft at 4 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 nm or less. 
.mon night...se winds 10 to 15 kt with gusts up to 20 kt,
becoming n 5 to 10 kt after midnight. seas 3 to 5 ft. wave
detail: se 3 ft at 5 seconds and se 2 ft at 10 seconds. patchy
fog. a chance of showers in the evening. vsby 1 nm or less. 
.tue...n winds 5 to 10 kt. seas 2 to 4 ft. wave detail: se 4 ft
at 8 seconds and s 3 ft at 7 seconds. patchy fog in the morning
with vsby 1 to 3 nm. 
.tue night...nw winds 5 to 10 kt. seas 2 to 4 ft. wave detail: se
4 ft at 8 seconds and ne 2 ft at 4 seconds. 
.wed and wed night...sw winds 5 to 10 kt. seas 2 to 3 ft. wave
detail: se 2 ft at 6 seconds. 
.thu...w winds 5 to 10 kt. seas 2 to 3 ft. 
.thu night and fri...w winds 5 to 10 kt, becoming ne. seas 2 to
3 ft. a chance of showers. 
.fri night...e 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 170504
cwfbox
expires:202608171800;;327843

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

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


anz255-171800-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
103 am edt mon aug 17 2026

...small craft advisory in effect through late tonight...

.rest of tonight...s winds 10 to 15 kt. seas 2 to 4 ft. wave
detail: s 3 ft at 4 seconds and e 1 foot at 3 seconds. a slight
chance of showers. 
.mon...s winds 15 to 20 kt. seas 3 to 5 ft. wave detail: se 4 ft
at 5 seconds and se 1 foot at 8 seconds. showers likely. patchy
fog in the afternoon with vsby 1 nm or less. 
.mon night...se winds 10 to 15 kt with gusts up to 20 kt,
becoming nw 5 to 10 kt after midnight. seas 3 to 5 ft. wave
detail: se 4 ft at 6 seconds and se 2 ft at 11 seconds. patchy
fog. a chance of showers in the evening. vsby 1 nm or less,
increasing to 1 to 3 nm after midnight. 
.tue...nw winds 5 to 10 kt. seas 3 to 4 ft. wave detail: s 4 ft
at 8 seconds and n 1 foot at 3 seconds. patchy fog in the morning
with vsby 1 to 3 nm. 
.tue night...nw winds around 5 kt. seas 2 to 3 ft. wave detail: s
3 ft at 7 seconds and se 2 ft at 8 seconds. 
.wed and wed night...sw winds 5 to 10 kt. seas 2 to 3 ft. wave
detail: se 2 ft at 6 seconds and se 1 foot at 10 seconds. 
.thu...w winds 5 to 10 kt. seas 2 to 3 ft. 
.thu night through fri 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.

$$