fzus51 kbox 180805
cwfbox
expires:202604182100;;570186

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

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


anz235-182100-
rhode island sound-
404 am edt sat apr 18 2026

.today...ne winds 10 to 15 kt. gusts up to 20 kt this morning.
seas 2 to 3 ft. wave detail: s 3 ft at 7 seconds and n 2 ft at
4 seconds. areas of fog. vsby 1 nm or less, increasing to 1 to
3 nm this 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. areas of fog in the evening, then patchy fog after
midnight. vsby 1 nm or less, increasing to 1 to 3 nm after
midnight. 
.sun...s winds 10 to 15 kt, becoming w 15 to 20 kt in the
afternoon. seas 2 to 3 ft. wave detail: se 3 ft at 6 seconds.
patchy fog. a chance of rain in the morning, then rain in the
afternoon. vsby 1 nm or less, increasing to 1 to 3 nm in the
afternoon. 
.sun night...nw winds 15 to 20 kt, becoming w 10 to 15 kt after
midnight. seas 2 to 4 ft. wave detail: se 3 ft at 7 seconds and w
2 ft at 4 seconds. rain, mainly in the evening. patchy fog in the
evening. 
.mon...w winds 10 to 15 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 after midnight.
seas 2 to 3 ft. wave detail: w 2 ft at 3 seconds and sw 2 ft at
7 seconds. 
.tue through wed 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 180805
cwfbox
expires:202604182100;;570189

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

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


anz236-182100-
narragansett bay-
404 am edt sat apr 18 2026

.today...ne winds around 10 kt. waves around 2 ft. areas of fog
this morning with vsby 1 to 3 nm. 
.tonight...e winds 5 to 10 kt, becoming s after midnight. waves
around 2 ft. patchy fog. vsby 1 to 3 nm. 
.sun...s winds 5 to 10 kt, becoming w 10 to 15 kt with gusts up
to 20 kt in the afternoon. waves around 2 ft. patchy fog. rain.
vsby 1 to 3 nm. 
.sun night...nw winds 10 to 15 kt. gusts up to 20 kt in the
evening. waves around 2 ft. rain, mainly in the evening. 
.mon...w winds around 10 kt. waves around 2 ft. 
.mon night...nw winds around 10 kt. waves around 2 ft. 
.tue through wed night...w 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 180805
cwfbox
expires:202604182100;;570187

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

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


anz237-182100-
block island sound-
404 am edt sat apr 18 2026

.today...ne winds around 10 kt. gusts up to 20 kt this morning.
seas 2 to 3 ft. wave detail: s 3 ft at 7 seconds and ne 2 ft at
4 seconds. areas of fog this morning with vsby 1 nm or less. 
.tonight...e winds 10 to 15 kt, becoming se 5 to 10 kt after
midnight. seas 2 to 3 ft. wave detail: ne 2 ft at 4 seconds and s
2 ft at 7 seconds. patchy fog. vsby 1 to 3 nm. 
.sun...se winds 5 to 10 kt, becoming w 10 to 15 kt with gusts up
to 20 kt in the afternoon. seas 2 to 3 ft. wave detail: s 2 ft at
4 seconds and se 2 ft at 7 seconds. patchy fog. rain. vsby 1 nm
or less, increasing to 1 to 3 nm in the afternoon. 
.sun night...nw winds 10 to 15 kt. gusts up to 20 kt in the
evening. seas 2 to 3 ft. wave detail: w 2 ft at 4 seconds and se
2 ft at 7 seconds. rain, mainly in the evening. 
.mon...w winds around 10 kt. seas 2 to 3 ft. wave detail: se 2 ft
at 7 seconds and w 1 foot at 3 seconds. 
.mon night...nw winds 10 to 15 kt, becoming n after midnight.
seas around 2 ft. wave detail: nw 2 ft at 3 seconds and se 2 ft
at 7 seconds. 
.tue through wed 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 180805
cwfbox
expires:202604182100;;570181

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

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


anz255-182100-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
404 am edt sat apr 18 2026

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

$$