fzus51 kbox 191704
cwfbox
expires:202608200600;;000187

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 pm edt wed aug 19 2026

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


anz231-200600-
cape cod bay-
104 pm edt wed aug 19 2026

.this afternoon...s winds 5 to 10 kt with gusts up to 20 kt. seas
around 2 ft. wave detail: sw 1 foot at 2 seconds and ne 1 foot at
4 seconds. 
.tonight...sw winds 5 to 10 kt. gusts up to 20 kt in the evening.
seas around 2 ft in the evening, then 1 foot or less. wave
detail: sw 1 foot at 2 seconds and e 1 foot at 6 seconds,
becoming sw 1 foot at 2 seconds and se 1 foot at 7 seconds. 
.thu...w winds around 5 kt, becoming n in the afternoon. seas
1 foot or less. wave detail: sw 1 foot at 2 seconds and e 1 foot
at 8 seconds. 
.thu night...w winds around 5 kt, becoming nw around 5 kt after
midnight. seas 1 foot or less. wave detail: sw 1 foot at
2 seconds and e 1 foot at 7 seconds. a chance of showers in the
evening. 
.fri and fri night...e winds 5 to 10 kt. seas around 2 ft. wave
detail: nw 1 foot at 3 seconds and se 1 foot at 8 seconds. 
.sat and sat night...e winds 5 to 10 kt. seas around 2 ft. wave
detail: e 1 foot at 2 seconds and sw 1 foot at 4 seconds. a
chance of showers. 
.sun and sun night...se winds 5 to 10 kt, becoming sw. 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 191704
cwfbox
expires:202608200600;;000191

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 pm edt wed aug 19 2026

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


anz232-200600-
nantucket sound-
104 pm edt wed aug 19 2026

.this afternoon...sw winds 10 to 15 kt with gusts up to 20 kt.
seas around 2 ft. wave detail: sw 2 ft at 3 seconds and se 1 foot
at 7 seconds. 
.tonight...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 3 seconds and se 1 foot at 6 seconds. patchy
fog after midnight. 
.thu...sw winds 5 to 10 kt. seas around 2 ft in the morning, then
1 foot or less. wave detail: sw 1 foot at 3 seconds and se 1 foot
at 7 seconds, becoming sw 1 foot at 2 seconds and se 1 foot at
7 seconds. 
.thu night...w winds 5 to 10 kt, becoming nw after midnight. seas
around 2 ft in the evening, then 1 foot or less. wave detail: w
1 foot at 3 seconds and se 1 foot at 7 seconds, becoming w 1 foot
at 3 seconds and se 1 foot at 8 seconds. a chance of showers in
the evening. 
.fri and fri night...e winds around 10 kt. seas around 2 ft. wave
detail: nw 1 foot at 3 seconds and se 1 foot at 8 seconds. a
chance of showers in the morning. a chance of showers after
midnight. 
.sat and sat night...e winds 10 to 15 kt. gusts up to 20 kt. seas
around 2 ft. wave detail: e 2 ft at 3 seconds and sw 1 foot at
6 seconds. showers likely. 
.sun...s winds 10 to 15 kt. seas around 2 ft. a chance of
showers. 
.sun night...sw 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 191704
cwfbox
expires:202608200600;;000192

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 pm edt wed aug 19 2026

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


anz233-200600-
vineyard sound-
104 pm edt wed aug 19 2026

.this afternoon...sw winds around 10 kt with gusts up to 20 kt.
seas around 2 ft. wave detail: se 2 ft at 7 seconds and sw 1 foot
at 3 seconds. 
.tonight...sw winds 5 to 10 kt. seas around 2 ft. wave detail: se
2 ft at 7 seconds and sw 1 foot at 4 seconds. patchy fog after
midnight. 
.thu...sw winds 5 to 10 kt. seas around 2 ft in the morning, then
1 foot or less. wave detail: sw 1 foot at 4 seconds and se 1 foot
at 7 seconds, becoming sw 1 foot at 3 seconds and se 1 foot at
7 seconds. 
.thu night...w winds 5 to 10 kt, becoming nw after midnight. seas
around 2 ft in the evening, then 1 foot or less. wave detail: sw
1 foot at 3 seconds and se 1 foot at 7 seconds, becoming w 1 foot
at 3 seconds and se 1 foot at 8 seconds. a chance of showers. 
.fri and fri night...e winds 5 to 10 kt. seas 1 foot or less.
wave detail: w 1 foot at 3 seconds and ne 1 foot at 7 seconds. a
chance of showers. 
.sat and sat night...e winds 10 to 15 kt. seas around 2 ft. wave
detail: ne 1 foot at 3 seconds and s 1 foot at 7 seconds. showers
likely. 
.sun and sun night...se winds 5 to 10 kt, becoming sw 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 191704
cwfbox
expires:202608200600;;000193

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 pm edt wed aug 19 2026

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


anz234-200600-
buzzards bay-
104 pm edt wed aug 19 2026

.this afternoon...sw winds 10 to 15 kt with gusts up to 20 kt.
seas around 2 ft. wave detail: sw 1 foot at 3 seconds and e
1 foot at 6 seconds. 
.tonight...sw winds 5 to 10 kt. gusts up to 20 kt in the evening.
seas around 2 ft. wave detail: sw 1 foot at 3 seconds and se
1 foot at 6 seconds. patchy fog after midnight. 
.thu...sw winds 5 to 10 kt. seas 1 foot or less. wave detail: sw
1 foot at 3 seconds and se 1 foot at 7 seconds. 
.thu night...w winds 5 to 10 kt, becoming nw after midnight. seas
1 foot or less. wave detail: sw 1 foot at 3 seconds and se 1 foot
at 7 seconds. a chance of showers in the evening. 
.fri...ne winds 5 to 10 kt. seas 1 foot or less. wave detail: nw
1 foot at 3 seconds and ne 1 foot at 6 seconds. 
.fri night...e winds 5 to 10 kt. seas 1 foot or less. wave
detail: ne 1 foot at 2 seconds and nw 1 foot at 5 seconds. a
chance of showers after midnight. 
.sat and sat night...e winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt. seas around 2 ft. showers likely. 
.sun and sun night...se winds 10 to 15 kt, becoming sw. gusts up
to 20 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 191704
cwfbox
expires:202608200600;;000194

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 pm edt wed aug 19 2026

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


anz235-200600-
rhode island sound-
104 pm edt wed aug 19 2026

.this afternoon...sw winds around 10 kt. seas around 2 ft. wave
detail: s 2 ft at 6 seconds. 
.tonight...sw winds 5 to 10 kt. seas around 2 ft. wave detail: sw
2 ft at 3 seconds and se 2 ft at 7 seconds. 
.thu...sw winds 5 to 10 kt. seas around 2 ft. wave detail: se
2 ft at 7 seconds and sw 1 foot at 3 seconds. 
.thu night...w winds 5 to 10 kt, becoming nw after midnight. seas
around 2 ft. wave detail: se 2 ft at 7 seconds and sw 1 foot at
3 seconds. a chance of showers. 
.fri and fri night...e winds around 10 kt. seas around 2 ft. wave
detail: e 2 ft at 3 seconds and nw 1 foot at 3 seconds. a chance
of showers. 
.sat and sat night...e winds 10 to 15 kt. gusts up to 20 kt. seas
2 to 3 ft. wave detail: e 3 ft at 5 seconds and sw 1 foot at
6 seconds. a chance of showers.
.sun...se winds around 10 kt. seas 2 to 3 ft. a chance of
showers. 
.sun 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 191704
cwfbox
expires:202608200600;;000197

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 pm edt wed aug 19 2026

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


anz236-200600-
narragansett bay-
104 pm edt wed aug 19 2026

.this afternoon...sw winds 5 to 10 kt. waves around 2 ft. 
.tonight...sw winds 5 to 10 kt. waves around 2 ft. 
.thu...w winds 5 to 10 kt. waves 1 foot or less. 
.thu night...w winds 5 to 10 kt, becoming nw after midnight.
waves 1 foot or less. a chance of showers in the evening. 
.fri and fri night...ne winds 5 to 10 kt. waves 1 foot or less. 
.sat and sat night...e winds 10 to 15 kt, diminishing to 5 to
10 kt. waves around 2 ft. a chance of showers. 
.sun and sun night...se winds 5 to 10 kt, becoming sw. 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 191704
cwfbox
expires:202608200600;;000185

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 pm edt wed aug 19 2026

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


anz250-200600-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
104 pm edt wed aug 19 2026

.this afternoon...s winds 5 to 10 kt with gusts up to 20 kt. seas
2 to 3 ft. wave detail: se 3 ft at 7 seconds and s 1 foot at
2 seconds. 
.tonight...sw winds 5 to 10 kt. gusts up to 20 kt in the evening.
seas 2 to 3 ft. wave detail: se 3 ft at 7 seconds and s 2 ft at
3 seconds. 
.thu...w winds 5 to 10 kt, diminishing to around 5 kt in the
afternoon. seas around 2 ft. wave detail: se 2 ft at 8 seconds
and e 2 ft at 8 seconds. 
.thu night...sw winds around 5 kt, becoming n after midnight.
seas around 2 ft. wave detail: e 2 ft at 8 seconds and sw 1 foot
at 2 seconds. a chance of showers in the evening. 
.fri...ne winds 5 to 10 kt. seas around 2 ft. wave detail: e 2 ft
at 8 seconds and n 1 foot at 4 seconds. 
.fri night...e winds 5 to 10 kt. seas around 2 ft. wave detail: e
2 ft at 8 seconds and n 1 foot at 4 seconds. 
.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. a chance of
showers. 
.sun and sun night...e winds 5 to 10 kt, becoming sw. 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 191704
cwfbox
expires:202608200600;;000188

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 pm edt wed aug 19 2026

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


anz254-200600-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
104 pm edt wed aug 19 2026

.this afternoon...s winds around 10 kt with gusts up to 20 kt.
seas 2 to 3 ft. wave detail: se 3 ft at 7 seconds and sw 1 foot
at 3 seconds. 
.tonight...sw winds 5 to 10 kt. gusts up to 20 kt in the evening.
seas 2 to 3 ft. wave detail: se 3 ft at 7 seconds and sw 2 ft at
3 seconds. patchy fog after midnight with vsby 1 to 3 nm. 
.thu...sw winds 5 to 10 kt. seas around 2 ft. wave detail: se
2 ft at 8 seconds and e 2 ft at 8 seconds. patchy fog. vsby 1 to
3 nm, decreasing to 1 nm or less in the afternoon. 
.thu night...sw winds around 5 kt, becoming nw after midnight.
seas around 2 ft. wave detail: se 2 ft at 8 seconds and w 1 foot
at 3 seconds. patchy fog. showers likely in the evening. a chance
of showers after midnight. vsby 1 nm or less. 
.fri and fri night...ne winds 5 to 10 kt. seas around 2 ft. wave
detail: e 2 ft at 7 seconds and nw 1 foot at 3 seconds. a chance
of showers in the morning. a chance of showers after midnight. 
.sat and sat night...e winds 10 to 15 kt, becoming se 5 to 10 kt.
seas 2 to 3 ft. wave detail: e 3 ft at 5 seconds and se 2 ft at
8 seconds. showers likely. 
.sun...s winds 5 to 10 kt. seas 2 to 3 ft. a chance of showers. 
.sun night...sw winds around 10 kt. seas 2 to 4 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 191704
cwfbox
expires:202608200600;;000189

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 pm edt wed aug 19 2026

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


anz255-200600-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
104 pm edt wed aug 19 2026

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

$$