fzus51 kbox 211744
cwfbox
expires:202604220600;;754485

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

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


anz235-220600-
rhode island sound-
143 pm edt tue apr 21 2026

.this afternoon...s winds 5 to 10 kt. seas around 2 ft. wave
detail: nw 1 foot at 3 seconds and ne 1 foot at 4 seconds. 
.tonight...s winds 10 to 15 kt. seas around 2 ft. wave detail: sw
2 ft at 4 seconds and e 1 foot at 6 seconds. 
.wed...s winds around 15 kt with gusts up to 20 kt. seas 2 to
3 ft. wave detail: sw 3 ft at 5 seconds and e 1 foot at
8 seconds. a chance of showers in the morning, then showers
likely in the afternoon. patchy fog in the afternoon with vsby
1 to 3 nm. 
.wed night...se winds 10 to 15 kt, becoming e 5 to 10 kt after
midnight. seas 2 to 3 ft. wave detail: se 3 ft at 7 seconds and w
2 ft at 5 seconds. patchy fog. a chance of showers in the
evening. vsby 1 to 3 nm after midnight. 
.thu...nw winds 5 to 10 kt, becoming w 10 to 15 kt in the
afternoon. seas 2 to 3 ft. wave detail: s 3 ft at 6 seconds and
nw 1 foot at 3 seconds. 
.thu night...n winds around 10 kt. seas 2 to 3 ft. wave detail:
sw 3 ft at 6 seconds and nw 1 foot at 3 seconds. 
.fri through sat night...e 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 211744
cwfbox
expires:202604220600;;754488

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

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


anz236-220600-
narragansett bay-
143 pm edt tue apr 21 2026

.this afternoon...s winds 5 to 10 kt. waves 1 foot or less. 
.tonight...s winds around 10 kt. waves 1 foot or less, then
around 2 ft after midnight. 
.wed...s winds 10 to 15 kt with gusts up to 20 kt. waves around
2 ft. showers likely. patchy fog in the afternoon with vsby 1 to
3 nm. 
.wed night...se winds 5 to 10 kt. waves around 2 ft. patchy fog.
a chance of showers in the evening. vsby 1 to 3 nm after
midnight. 
.thu and thu night...n winds 10 to 15 kt with gusts up to 20 kt.
waves around 2 ft. 
.fri through sat night...e winds 5 to 10 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 211744
cwfbox
expires:202604220600;;754486

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

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


anz237-220600-
block island sound-
143 pm edt tue apr 21 2026

.this afternoon...s winds 5 to 10 kt. seas around 2 ft. wave
detail: w 1 foot at 2 seconds and e 1 foot at 5 seconds. 
.tonight...s winds 5 to 10 kt. seas around 2 ft. wave detail: sw
2 ft at 4 seconds and e 1 foot at 6 seconds. a chance of showers
after midnight. 
.wed...s winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. wave detail: sw 3 ft at 5 seconds and e 1 foot at
8 seconds. showers likely. patchy fog in the afternoon with vsby
1 to 3 nm. 
.wed night...se winds 5 to 10 kt, becoming ne after midnight.
seas 2 to 3 ft. wave detail: sw 3 ft at 5 seconds and e 1 foot at
7 seconds. patchy fog. a chance of showers in the evening. vsby
1 to 3 nm. 
.thu...w winds 5 to 10 kt. seas 2 to 3 ft. wave detail: s 3 ft at
6 seconds and nw 1 foot at 3 seconds. 
.thu night...n winds 5 to 10 kt. seas 2 to 3 ft. wave detail: s
2 ft at 6 seconds and w 1 foot at 3 seconds. 
.fri through sat night...e 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 211744
cwfbox
expires:202604220600;;754480

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

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

$$