fzus51 kbox 170805
cwfbox
expires:202608172100;;336721

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

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


anz235-172100-
rhode island sound-
405 am edt mon aug 17 2026

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

.today...se winds 15 to 20 kt. seas 4 to 5 ft. wave detail: s
5 ft at 5 seconds and se 4 ft at 10 seconds. patchy fog. showers
this morning, then a chance of showers with a slight chance of
tstms this afternoon. vsby 1 to 3 nm, decreasing to 1 nm or less
this afternoon. 
.tonight...ne winds 5 to 10 kt, becoming n after midnight. seas
3 to 5 ft. wave detail: se 5 ft at 10 seconds and s 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: nw 3 ft at 3 seconds and e 3 ft at 4 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: s 3 ft at 7 seconds and se 2 ft at
8 seconds. 
.wed and wed night...sw winds 10 to 15 kt. seas 2 to 3 ft. wave
detail: w 2 ft at 3 seconds and s 2 ft at 7 seconds. 
.thu...w winds 5 to 10 kt. seas around 2 ft. wave detail: s 2 ft
at 7 seconds and w 1 foot at 3 seconds. 
.thu night...w winds 5 to 10 kt. seas around 2 ft. a chance of
showers. 
.fri...ne winds 5 to 10 kt. seas around 2 ft. 
.fri night...e winds 5 to 10 kt. seas around 2 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.

$$

fzus51 kbox 170805
cwfbox
expires:202608172100;;336724

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

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


anz236-172100-
narragansett bay-
405 am edt mon aug 17 2026

.today...se winds 10 to 15 kt with gusts up to 20 kt. waves 2 to
4 ft. patchy fog. showers likely this morning, then a chance of
showers with a slight chance of tstms this afternoon with vsby
1 nm or less. 
.tonight...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...ne winds 5 to 10 kt. waves 1 foot or less. 
.fri night...e winds 5 to 10 kt. waves 1 foot or less. a chance
of showers.  

winds and waves 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.

$$

fzus51 kbox 170805
cwfbox
expires:202608172100;;336722

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

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


anz237-172100-
block island sound-
405 am edt mon aug 17 2026

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

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

$$

fzus51 kbox 170805
cwfbox
expires:202608172100;;336716

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

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


anz255-172100-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
405 am edt mon aug 17 2026

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

.today...s winds 15 to 20 kt. seas 3 to 5 ft. wave detail: s 4 ft
at 7 seconds and e 1 foot at 3 seconds. showers likely. a slight
chance of tstms this afternoon. patchy fog this afternoon with
vsby 1 nm or less. 
.tonight...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: s 4 ft
at 7 seconds and se 4 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 7 seconds and se 3 ft at 8 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 3 ft at 8 seconds. 
.wed and wed night...sw winds 5 to 10 kt. seas 2 to 3 ft. wave
detail: sw 2 ft at 3 seconds and s 2 ft at 7 seconds. 
.thu...w winds 5 to 10 kt. seas 2 to 3 ft. wave detail: s 2 ft at
7 seconds and w 1 foot at 4 seconds. 
.thu night through fri night...e winds 5 to 10 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.

$$