fzus51 kbox 211704
cwfbox
expires:202607220600;;357145

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 pm edt tue jul 21 2026

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


anz235-220600-
rhode island sound-
104 pm edt tue jul 21 2026

...small craft advisory in effect from 8 pm edt this evening
through wednesday evening...

.this afternoon...se winds 15 to 20 kt with gusts up to 25 kt.
seas around 3 ft. wave detail: s 3 ft at 5 seconds. a chance of
showers with a slight chance of tstms. 
.tonight...s winds 20 to 25 kt with gusts up to 30 kt. seas 5 to
7 ft. wave detail: s 7 ft at 7 seconds and w 3 ft at 6 seconds.
showers. a chance of tstms in the evening. 
.wed...sw winds 20 to 25 kt with gusts up to 30 kt. seas 5 to
8 ft. wave detail: s 8 ft at 8 seconds and e 3 ft at 7 seconds.
showers likely, mainly in the morning. 
.wed night...sw winds 15 to 20 kt, becoming nw 10 to 15 kt after
midnight. gusts up to 25 kt. seas 5 to 7 ft. wave detail: s 7 ft
at 9 seconds and se 4 ft at 9 seconds. a chance of showers. 
.thu...n winds 5 to 10 kt, becoming sw in the afternoon. seas
5 to 7 ft. wave detail: s 6 ft at 9 seconds and e 3 ft at
7 seconds. 
.thu night...se winds 5 to 10 kt, becoming n after midnight. seas
3 to 5 ft. wave detail: s 4 ft at 8 seconds and e 2 ft at
9 seconds. 
.fri through sat night...ne winds 5 to 10 kt. seas 2 to 4 ft.  

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 211704
cwfbox
expires:202607220600;;357148

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 pm edt tue jul 21 2026

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


anz236-220600-
narragansett bay-
104 pm edt tue jul 21 2026

.this afternoon...se winds 15 to 20 kt with gusts up to 25 kt.
waves around 3 ft. a chance of showers with isolated tstms. 
.tonight...s winds 15 to 20 kt with gusts up to 30 kt. waves 3 to
4 ft. showers with a chance of tstms in the evening, then showers
likely after midnight. 
.wed...sw winds 15 to 20 kt with gusts up to 30 kt. waves 3 to
5 ft. a chance of showers. 
.wed night...sw winds 10 to 15 kt with gusts up to 25 kt,
becoming nw 5 to 10 kt after midnight. waves 2 to 4 ft. a chance
of showers in the evening. 
.thu...nw winds 5 to 10 kt, becoming w in the afternoon. waves
2 to 3 ft. 
.thu night...w winds 5 to 10 kt, becoming n after midnight. waves
2 to 3 ft. 
.fri through sat night...ne winds 5 to 10 kt. waves 2 to 3 ft.  

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 211704
cwfbox
expires:202607220600;;357146

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 pm edt tue jul 21 2026

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


anz237-220600-
block island sound-
104 pm edt tue jul 21 2026

...small craft advisory in effect from 8 pm edt this evening
through wednesday evening...

.this afternoon...se winds around 15 kt with gusts up to 25 kt.
seas around 3 ft. wave detail: se 3 ft at 6 seconds and sw 1 foot
at 3 seconds. a chance of showers and tstms. 
.tonight...s winds 20 to 25 kt with gusts up to 30 kt. seas 3 to
5 ft, building to 5 to 7 ft after midnight. wave detail: se 5 ft
at 6 seconds and w 2 ft at 6 seconds, becoming sw 7 ft at
6 seconds and se 2 ft at 8 seconds. showers with a chance of
tstms in the evening, then showers likely after midnight. 
.wed...sw winds 15 to 20 kt with gusts up to 30 kt. seas 5 to
7 ft. wave detail: sw 7 ft at 7 seconds and e 1 foot at
8 seconds. showers likely, mainly in the morning. 
.wed night...sw winds 15 to 20 kt with gusts up to 25 kt,
becoming nw 5 to 10 kt after midnight. seas 5 to 7 ft. wave
detail: s 6 ft at 9 seconds and w 2 ft at 5 seconds. a chance of
showers in the evening. 
.thu...n winds 5 to 10 kt, becoming sw in the afternoon. seas
4 to 6 ft. wave detail: s 5 ft at 9 seconds and e 2 ft at
10 seconds. 
.thu night...e winds 5 to 10 kt, becoming n after midnight. seas
3 to 5 ft. wave detail: s 4 ft at 8 seconds and nw 1 foot at
7 seconds. 
.fri through sat night...ne winds 5 to 10 kt. seas 2 to 4 ft.  

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 211704
cwfbox
expires:202607220600;;357140

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 pm edt tue jul 21 2026

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


anz255-220600-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
104 pm edt tue jul 21 2026

...small craft advisory in effect from 8 pm edt this evening
through wednesday evening...

.this afternoon...se winds 15 to 20 kt with gusts up to 25 kt.
seas 2 to 3 ft. wave detail: sw 3 ft at 5 seconds and se 1 foot
at 9 seconds. a chance of showers.
.tonight...s winds 20 to 25 kt, becoming sw 25 to 30 kt after
midnight. seas 4 to 6 ft, building to 6 to 9 ft after midnight.
wave detail: se 6 ft at 7 seconds and w 1 foot at 7 seconds,
becoming s 9 ft at 7 seconds and nw 2 ft at 7 seconds. showers
with a chance of tstms. 
.wed...sw winds 25 to 30 kt, diminishing to 20 to 25 kt in the
afternoon. seas 7 to 10 ft. wave detail: sw 10 ft at 7 seconds
and e 1 foot at 8 seconds. showers with a chance of tstms in the
morning, then a chance of showers in the afternoon. 
.wed night...sw winds 20 to 25 kt, becoming w 15 to 20 kt after
midnight. gusts up to 30 kt. seas 6 to 9 ft. wave detail: s 9 ft
at 9 seconds and w 1 foot at 7 seconds. a chance of showers in
the evening. showers likely after midnight. 
.thu...n winds around 10 kt, becoming ne in the afternoon. seas
6 to 9 ft, subsiding to 5 to 7 ft in the afternoon. wave detail:
s 7 ft at 9 seconds and nw 1 foot at 4 seconds, becoming s 6 ft
at 8 seconds and n 1 foot at 7 seconds. a chance of showers. 
.thu night...e winds 5 to 10 kt, becoming ne after midnight. seas
4 to 6 ft. wave detail: s 5 ft at 8 seconds and e 1 foot at
7 seconds. a chance of showers in the evening. 
.fri through sat night...e winds 5 to 10 kt. seas 2 to 4 ft.  

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.

$$