fzus51 kbox 182005
cwfbox
expires:202604190900;;598274

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

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz235-190900-
rhode island sound-
404 pm edt sat apr 18 2026

...small craft advisory in effect from sunday morning through
sunday afternoon...

.tonight...e winds 5 to 10 kt, becoming s after midnight. seas
2 to 3 ft. wave detail: ne 2 ft at 4 seconds and s 2 ft at
7 seconds. patchy fog. patchy drizzle after midnight. vsby 1 to
3 nm, decreasing to 1 nm or less after midnight. 
.sun...s winds 10 to 15 kt, becoming w 15 to 20 kt in the
afternoon. gusts up to 25 kt. seas 2 to 3 ft. wave detail: se
3 ft at 7 seconds and w 2 ft at 3 seconds. patchy fog. a chance
of showers in the morning, then showers in the afternoon. vsby
1 nm or less. 
.sun night...nw winds 15 to 20 kt, becoming w 10 to 15 kt after
midnight. gusts up to 25 kt. seas 2 to 4 ft. wave detail: se 3 ft
at 7 seconds and nw 2 ft at 4 seconds. a chance of showers in the
evening. 
.mon...w winds around 10 kt. seas 2 to 3 ft. wave detail: w 2 ft
at 3 seconds and se 2 ft at 7 seconds. 
.mon night...nw winds 10 to 15 kt, becoming n with gusts up to
20 kt after midnight. seas 2 to 3 ft. wave detail: nw 2 ft at
3 seconds and e 2 ft at 7 seconds. 
.tue and tue night...sw winds 15 to 20 kt. seas 2 to 3 ft. wave
detail: sw 3 ft at 4 seconds and n 2 ft at 4 seconds. 
.wed through thu night...w winds 15 to 20 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 182005
cwfbox
expires:202604190900;;598277

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

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz236-190900-
narragansett bay-
404 pm edt sat apr 18 2026

.tonight...e winds 5 to 10 kt, becoming s after midnight. waves
around 2 ft. patchy fog. patchy drizzle after midnight. vsby 1 to
3 nm, decreasing to 1 nm or less after midnight. 
.sun...s winds 5 to 10 kt, becoming nw 10 to 15 kt in the
afternoon. gusts up to 20 kt. waves 2 to 3 ft. patchy fog.
showers. vsby 1 nm or less, increasing to 1 to 3 nm in the
afternoon. 
.sun night...nw winds 10 to 15 kt with gusts up to 20 kt,
becoming w 5 to 10 kt after midnight. waves 2 to 3 ft. a chance
of showers in the evening. 
.mon...w winds 5 to 10 kt. waves around 2 ft. 
.mon night...nw winds 5 to 10 kt. waves around 2 ft. 
.tue and tue night...sw winds 10 to 15 kt. waves around 2 ft. 
.wed through thu night...nw winds 10 to 15 kt with gusts up to
20 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 182005
cwfbox
expires:202604190900;;598275

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

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz237-190900-
block island sound-
404 pm edt sat apr 18 2026

...small craft advisory in effect from sunday morning through
sunday afternoon...

.tonight...e winds 5 to 10 kt, becoming se after midnight. seas
2 to 3 ft. wave detail: s 2 ft at 7 seconds and ne 1 foot at
4 seconds. patchy fog. patchy drizzle after midnight. vsby 1 nm
or less. 
.sun...s winds 10 to 15 kt, becoming nw 15 to 20 kt in the
afternoon. gusts up to 25 kt. seas 2 to 3 ft. wave detail: se
3 ft at 7 seconds and w 2 ft at 3 seconds. patchy fog. a chance
of showers in the morning, then showers in the afternoon. vsby
1 nm or less, increasing to 1 to 3 nm in the afternoon. 
.sun night...nw winds 10 to 15 kt with gusts up to 25 kt. seas
2 to 3 ft. wave detail: se 3 ft at 7 seconds and w 2 ft at
4 seconds. a chance of showers in the evening. 
.mon...w winds around 10 kt. seas around 2 ft. wave detail: se
2 ft at 7 seconds and w 1 foot at 3 seconds. 
.mon night...nw winds 10 to 15 kt. gusts up to 20 kt after
midnight. seas around 2 ft. wave detail: nw 2 ft at 3 seconds and
se 2 ft at 7 seconds. 
.tue and tue night...sw winds 10 to 15 kt with gusts up to 20 kt.
seas 2 to 3 ft. wave detail: s 2 ft at 4 seconds and ne 2 ft at
5 seconds. 
.wed through thu night...nw winds 10 to 15 kt with gusts up to
20 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 182005
cwfbox
expires:202604190900;;598269

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

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


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

...small craft advisory in effect from sunday morning through
sunday evening...

.tonight...ne winds 5 to 10 kt, becoming s after midnight. seas
2 to 4 ft. wave detail: e 3 ft at 7 seconds and s 2 ft at
7 seconds. patchy fog. patchy drizzle. vsby 1 nm or less. 
.sun...s winds 15 to 20 kt, becoming sw in the afternoon. gusts
up to 25 kt. seas 3 to 5 ft. wave detail: s 4 ft at 6 seconds and
e 4 ft at 7 seconds. patchy fog. showers likely in the afternoon.
vsby 1 nm or less. 
.sun night...nw winds 15 to 20 kt with gusts up to 25 kt. seas
3 to 5 ft. wave detail: w 4 ft at 6 seconds and s 4 ft at
6 seconds. a chance of showers in the evening. 
.mon...w winds 5 to 10 kt. seas 2 to 4 ft. wave detail: sw 3 ft
at 6 seconds and e 2 ft at 7 seconds. 
.mon night and tue...n winds 10 to 15 kt with gusts up to 20 kt.
seas 2 to 4 ft. wave detail: n 3 ft at 5 seconds and sw 2 ft at
6 seconds. 
.tue night...s winds 5 to 10 kt, becoming sw 10 to 15 kt with
gusts up to 20 kt after midnight. seas 2 to 3 ft. wave detail: sw
2 ft at 4 seconds and e 2 ft at 7 seconds. 
.wed...sw winds 15 to 20 kt. seas 3 to 4 ft. a chance of showers.
.wed night through thu night...w winds 10 to 15 kt. seas 2 to
4 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.

$$