fzus51 kbox 182004
cwfbox
expires:202608190900;;953062

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 pm edt tue aug 18 2026

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


anz235-190900-
rhode island sound-
404 pm edt tue aug 18 2026

.tonight...sw winds 5 to 10 kt. seas 2 to 3 ft. wave detail: s
3 ft at 6 seconds and e 1 foot at 3 seconds. patchy fog after
midnight. 
.wed...sw winds around 5 kt, becoming s in the afternoon. seas
2 to 3 ft. wave detail: s 3 ft at 6 seconds and e 1 foot at
4 seconds. 
.wed night...sw winds 5 to 10 kt. seas 2 to 3 ft. wave detail: sw
2 ft at 3 seconds and se 2 ft at 6 seconds. patchy fog after
midnight with vsby 1 nm or less. 
.thu...w 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 in the
morning with vsby 1 nm or less. 
.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
4 seconds. 
.fri...n winds 5 to 10 kt, becoming e in the afternoon. seas
around 2 ft. wave detail: nw 1 foot at 3 seconds and se 1 foot at
8 seconds. 
.fri night...e winds 5 to 10 kt. seas around 2 ft. a chance of
showers after midnight. 
.sat...e winds 10 to 15 kt. seas 2 to 3 ft. a chance of showers. 
.sat night...ne winds 10 to 15 kt. seas 2 to 3 ft. showers
likely. 
.sun...se winds 10 to 15 kt. seas 2 to 3 ft. showers likely. 
.sun night...sw 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 182004
cwfbox
expires:202608190900;;953065

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 pm edt tue aug 18 2026

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


anz236-190900-
narragansett bay-
404 pm edt tue aug 18 2026

.tonight...sw winds 5 to 10 kt. waves around 2 ft. patchy fog
after midnight with vsby 1 to 3 nm. 
.wed...sw winds around 5 kt, becoming s in the afternoon. waves
around 2 ft. patchy fog in the morning with vsby 1 to 3 nm. 
.wed night...sw winds 5 to 10 kt. waves around 2 ft. patchy fog
after midnight with vsby 1 to 3 nm. 
.thu...w winds 5 to 10 kt. waves around 2 ft in the morning, then
1 foot or less. patchy fog in the morning with vsby 1 to 3 nm. 
.thu night...w winds 5 to 10 kt, becoming nw after midnight.
waves 1 foot or less. 
.fri and fri night...e winds 5 to 10 kt. waves 1 foot or less. 
.sat...e winds 5 to 10 kt. waves around 2 ft. a chance of
showers. 
.sat night...ne winds 5 to 10 kt. waves around 2 ft. showers
likely. 
.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 182004
cwfbox
expires:202608190900;;953063

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 pm edt tue aug 18 2026

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


anz237-190900-
block island sound-
404 pm edt tue aug 18 2026

.tonight...sw winds around 5 kt. seas 2 to 3 ft. wave detail: se
3 ft at 6 seconds. 
.wed...sw winds 5 to 10 kt. seas 2 to 3 ft. wave detail: s 3 ft
at 7 seconds and e 1 foot at 4 seconds. 
.wed night...sw winds 5 to 10 kt. seas around 2 ft. wave detail:
s 2 ft at 6 seconds and e 1 foot at 6 seconds. patchy fog after
midnight with vsby 1 to 3 nm. 
.thu...w 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 in the
morning with vsby 1 nm or less. 
.thu night...w 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
4 seconds. 
.fri...ne winds 5 to 10 kt, becoming e in the afternoon. seas
around 2 ft. wave detail: ne 1 foot at 2 seconds and w 1 foot at
4 seconds. 
.fri night...e winds 5 to 10 kt. seas around 2 ft. a chance of
showers after midnight. 
.sat...e winds 10 to 15 kt. seas 2 to 3 ft. a chance of showers. 
.sat night...ne winds 5 to 10 kt. seas 2 to 3 ft. showers likely.
.sun and sun night...se 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 182004
cwfbox
expires:202608190900;;953057

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 pm edt tue aug 18 2026

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


anz255-190900-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
404 pm edt tue aug 18 2026

.tonight...w winds around 5 kt. seas 2 to 4 ft. wave detail: s
4 ft at 7 seconds and sw 4 ft at 8 seconds. patchy fog. vsby 1 to
3 nm. 
.wed...sw winds 5 to 10 kt. seas 2 to 3 ft. wave detail: sw 3 ft
at 6 seconds and e 1 foot at 6 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
2 ft at 7 seconds. patchy fog after midnight with vsby 1 nm or
less. 
.thu...sw winds 5 to 10 kt. seas around 2 ft. wave detail: s 2 ft
at 6 seconds and e 1 foot at 6 seconds. patchy fog in the morning
with vsby 1 to 3 nm. 
.thu night...w winds 5 to 10 kt. seas around 2 ft. wave detail: e
2 ft at 7 seconds and sw 1 foot at 4 seconds. a chance of
showers. 
.fri and fri night...e winds 5 to 10 kt. seas around 2 ft. wave
detail: se 2 ft at 8 seconds and w 1 foot at 4 seconds. a chance
of showers through the day. 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. showers likely. 
.sun...s winds around 10 kt. seas 2 to 4 ft. showers likely. 
.sun night...sw winds 10 to 15 kt. seas 3 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.

$$