fzus51 kbox 201703
cwfbox
expires:202608210600;;057808

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 pm edt thu aug 20 2026

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


anz231-210600-
cape cod bay-
103 pm edt thu aug 20 2026

.this afternoon...e winds 5 to 10 kt. seas 1 foot or less. wave
detail: sw 1 foot at 2 seconds and e 1 foot at 7 seconds. 
.tonight...nw winds around 5 kt, becoming ne after midnight. seas
1 foot or less. wave detail: sw 1 foot at 2 seconds and e 1 foot
at 5 seconds. a chance of showers in the evening, then showers
likely after midnight. 
.fri...ne winds 5 to 10 kt. seas 1 foot or less. wave detail: n
1 foot at 3 seconds. a chance of showers. 
.fri night...e winds 5 to 10 kt. seas 1 foot or less. wave
detail: n 1 foot at 3 seconds and e 1 foot at 3 seconds. a chance
of showers. 
.sat...e winds 5 to 10 kt. seas around 2 ft. wave detail: ne
1 foot at 4 seconds. showers. patchy fog in the morning. vsby
1 to 3 nm. 
.sat night...se winds 5 to 10 kt, becoming sw after midnight.
seas around 2 ft. wave detail: s 1 foot at 2 seconds and e 1 foot
at 3 seconds. showers.
.sun...s winds 5 to 10 kt. seas around 2 ft. a chance of showers.
.sun night through mon night...w 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 201703
cwfbox
expires:202608210600;;057812

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 pm edt thu aug 20 2026

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


anz232-210600-
nantucket sound-
103 pm edt thu aug 20 2026

.this afternoon...s winds around 10 kt. seas 1 foot or less. wave
detail: sw 1 foot at 3 seconds and e 1 foot at 8 seconds. 
.tonight...w winds 5 to 10 kt, becoming ne after midnight. seas
around 2 ft in the evening, then 1 foot or less. wave detail: sw
1 foot at 3 seconds and e 1 foot at 8 seconds, becoming w 1 foot
at 3 seconds and ne 1 foot at 8 seconds. showers likely after
midnight. 
.fri...ne winds 10 to 15 kt. seas around 2 ft. wave detail: e
2 ft at 4 seconds and sw 1 foot at 3 seconds. a chance of
showers. 
.fri night...e winds 10 to 15 kt. seas around 2 ft. wave detail:
e 2 ft at 4 seconds and s 1 foot at 4 seconds. patchy fog. a
chance of showers in the evening. showers likely after midnight. 
.sat...e winds 10 to 15 kt with gusts up to 20 kt. seas around
2 ft. wave detail: se 2 ft at 4 seconds. showers. patchy fog in
the morning. vsby 1 to 3 nm. 
.sat night...s winds 10 to 15 kt. seas around 2 ft. wave detail:
se 2 ft at 5 seconds. showers.
.sun...s winds around 10 kt. seas around 2 ft. showers likely. 
.sun night...sw winds around 10 kt. seas around 2 ft. a chance of
showers. 
.mon and mon night...w 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 201703
cwfbox
expires:202608210600;;057813

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 pm edt thu aug 20 2026

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


anz233-210600-
vineyard sound-
103 pm edt thu aug 20 2026

.this afternoon...sw winds 5 to 10 kt. seas 1 foot or less. wave
detail: sw 1 foot at 3 seconds and se 1 foot at 8 seconds. 
.tonight...nw winds 5 to 10 kt, becoming ne after midnight. seas
1 foot or less. wave detail: sw 1 foot at 4 seconds and se 1 foot
at 8 seconds. a chance of showers in the evening, then showers
likely after midnight. patchy fog after midnight. 
.fri...ne winds 10 to 15 kt. gusts up to 20 kt in the morning.
seas around 2 ft. wave detail: ne 1 foot at 3 seconds and sw
1 foot at 4 seconds. a chance of showers.
.fri night...ne winds around 10 kt. seas around 2 ft. wave
detail: ne 1 foot at 3 seconds and s 1 foot at 5 seconds. patchy
fog. a chance of showers in the evening. showers likely after
midnight. 
.sat...e winds 10 to 15 kt. seas around 2 ft. wave detail: ne
1 foot at 4 seconds and s 1 foot at 5 seconds. showers. patchy
fog in the morning. vsby 1 to 3 nm. 
.sat night...s winds 5 to 10 kt. seas around 2 ft. wave detail:
se 2 ft at 5 seconds. showers likely. 
.sun...s winds 5 to 10 kt. seas around 2 ft. a chance of showers.
.sun night through mon night...w winds 10 to 15 kt with gusts up
to 20 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 201703
cwfbox
expires:202608210600;;057814

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 pm edt thu aug 20 2026

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


anz234-210600-
buzzards bay-
103 pm edt thu aug 20 2026

.this afternoon...sw winds 5 to 10 kt. seas 1 foot or less. wave
detail: sw 1 foot at 3 seconds and se 1 foot at 8 seconds. 
.tonight...nw winds 5 to 10 kt, becoming ne after midnight. seas
1 foot or less. wave detail: w 1 foot at 3 seconds and se 1 foot
at 8 seconds. a chance of showers in the evening, then showers
likely after midnight. patchy fog after midnight. 
.fri...ne winds 10 to 15 kt. gusts up to 20 kt in the morning.
seas around 2 ft in the morning, then 1 foot or less. wave
detail: ne 1 foot at 2 seconds and sw 1 foot at 3 seconds,
becoming ne 1 foot at 3 seconds and s 1 foot at 5 seconds. a
chance of showers. patchy fog in the morning. 
.fri night...ne winds around 10 kt. seas 1 foot or less. wave
detail: ne 1 foot at 2 seconds and s 1 foot at 5 seconds. patchy
fog. a chance of showers in the evening. showers likely after
midnight. 
.sat...e winds 10 to 15 kt with gusts up to 20 kt. seas around
2 ft. wave detail: ne 1 foot at 3 seconds. showers. patchy fog in
the morning. vsby 1 to 3 nm. 
.sat night...se winds 5 to 10 kt. seas around 2 ft. wave detail:
se 1 foot at 4 seconds. showers.
.sun...s winds 5 to 10 kt. seas around 2 ft. a chance of showers.
.sun night through mon night...w winds 10 to 15 kt with gusts up
to 20 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 201703
cwfbox
expires:202608210600;;057815

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 pm edt thu aug 20 2026

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


anz235-210600-
rhode island sound-
103 pm edt thu aug 20 2026

.this afternoon...sw winds 5 to 10 kt. seas around 2 ft. wave
detail: se 2 ft at 8 seconds and sw 1 foot at 3 seconds. 
.tonight...nw winds 5 to 10 kt, becoming ne 10 to 15 kt after
midnight. seas around 2 ft. wave detail: se 2 ft at 8 seconds and
sw 1 foot at 3 seconds. showers likely. patchy fog after
midnight. 
.fri...ne winds 10 to 15 kt. gusts up to 20 kt in the morning.
seas around 2 ft. wave detail: ne 2 ft at 5 seconds and s 1 foot
at 4 seconds. a chance of showers. 
.fri night...ne winds 10 to 15 kt. seas around 2 ft. wave detail:
ne 2 ft at 5 seconds and s 1 foot at 5 seconds. a chance of
showers in the evening, then showers likely after midnight.
patchy fog after midnight. 
.sat...e winds 10 to 15 kt. seas 2 to 3 ft. wave detail: ne 3 ft
at 5 seconds and sw 1 foot at 5 seconds. showers. patchy fog in
the morning. vsby 1 to 3 nm. 
.sat night...e winds around 10 kt, becoming se after midnight.
seas 2 to 3 ft. wave detail: s 3 ft at 6 seconds and se 3 ft at
10 seconds. showers likely. 
.sun...s winds 5 to 10 kt. seas 2 to 3 ft. a chance of showers. 
.sun night through mon night...w winds 10 to 15 kt with gusts up
to 20 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 201703
cwfbox
expires:202608210600;;057818

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 pm edt thu aug 20 2026

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


anz236-210600-
narragansett bay-
103 pm edt thu aug 20 2026

.this afternoon...sw winds 5 to 10 kt. waves 1 foot or less. 
.tonight...nw winds 5 to 10 kt, becoming ne after midnight. waves
1 foot or less. showers likely. patchy fog after midnight. 
.fri...ne winds 10 to 15 kt. waves 1 foot or less, then around
2 ft in the afternoon. a chance of showers. patchy fog in the
morning. 
.fri night...ne winds 5 to 10 kt. waves around 2 ft. a chance of
showers in the evening, then showers likely after midnight.
patchy fog after midnight. 
.sat...ne winds 5 to 10 kt. waves around 2 ft. showers. patchy
fog in the morning. vsby 1 to 3 nm. 
.sat night...ne winds 5 to 10 kt. waves around 2 ft. showers.
.sun...s winds 5 to 10 kt. waves around 2 ft. a chance of
showers. 
.sun night through mon night...w winds 10 to 15 kt with gusts up
to 20 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 201703
cwfbox
expires:202608210600;;057806

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 pm edt thu aug 20 2026

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


anz250-210600-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
103 pm edt thu aug 20 2026

.this afternoon...e winds 5 to 10 kt. seas around 2 ft. wave
detail: se 2 ft at 8 seconds and sw 1 foot at 2 seconds. 
.tonight...nw winds 5 to 10 kt, becoming n after midnight. seas
around 2 ft. wave detail: se 2 ft at 8 seconds and sw 1 foot at
2 seconds. a chance of showers.
.fri...ne winds 5 to 10 kt. seas around 2 ft. wave detail: ne
2 ft at 7 seconds and nw 1 foot at 3 seconds. a chance of
showers. 
.fri night...e winds 5 to 10 kt. seas around 2 ft. wave detail: e
2 ft at 7 seconds and sw 2 ft at 16 seconds. a chance of showers
after midnight. 
.sat...e winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. wave detail: e 3 ft at 7 seconds and n 1 foot at 3 seconds.
showers likely in the morning, then showers in the afternoon. 
.sat night...e winds 5 to 10 kt, becoming n after midnight. seas
2 to 4 ft. wave detail: se 4 ft at 6 seconds. showers likely. 
.sun...s winds 5 to 10 kt. seas 2 to 3 ft. a chance of showers. 
.sun night through mon night...w 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.

$$

fzus51 kbox 201703
cwfbox
expires:202608210600;;057809

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 pm edt thu aug 20 2026

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


anz254-210600-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
103 pm edt thu aug 20 2026

.this afternoon...s winds 5 to 10 kt. seas around 2 ft. wave
detail: se 2 ft at 8 seconds and sw 1 foot at 3 seconds. patchy
fog. vsby 1 nm or less. 
.tonight...sw winds 5 to 10 kt, becoming ne after midnight. seas
around 2 ft. wave detail: se 2 ft at 8 seconds and sw 1 foot at
3 seconds. patchy fog. a chance of showers after midnight. vsby
1 nm or less. 
.fri...e winds 5 to 10 kt. seas around 2 ft. wave detail: e 2 ft
at 6 seconds and w 1 foot at 3 seconds. a chance of showers.
patchy fog in the morning with vsby 1 nm or less. 
.fri night...e winds 5 to 10 kt. seas 2 to 3 ft. wave detail: ne
3 ft at 7 seconds and s 1 foot at 3 seconds. patchy fog. a chance
of showers. 
.sat...e winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. wave detail: e 3 ft at 6 seconds and nw 1 foot at
3 seconds. showers. patchy fog in the morning with vsby 1 to
3 nm. 
.sat night...s winds 5 to 10 kt. seas 2 to 4 ft. wave detail: se
3 ft at 6 seconds. showers.
.sun and sun night...s winds 5 to 10 kt. seas 2 to 4 ft. a chance
of showers. 
.mon and mon 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 201703
cwfbox
expires:202608210600;;057810

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 pm edt thu aug 20 2026

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


anz255-210600-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
103 pm edt thu aug 20 2026

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

$$