fzus51 kbox 172305
cwfbox
expires:202604181200;;547852

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
704 pm edt fri apr 17 2026

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


anz231-181200-
cape cod bay-
704 pm edt fri apr 17 2026

.tonight...ne winds 5 to 10 kt. seas 1 foot or less, then around
2 ft after midnight. wave detail: n 1 foot at 3 seconds and s
1 foot at 8 seconds, becoming n 1 foot at 3 seconds and se 1 foot
at 8 seconds. patchy fog. a slight chance of showers. a slight
chance of tstms this evening. vsby 1 to 3 nm, decreasing to 1 nm
or less after midnight. 
.sat...ne winds 5 to 10 kt. seas around 2 ft. wave detail: n
1 foot at 3 seconds and s 1 foot at 8 seconds. patchy fog. vsby
1 nm or less in the morning. 
.sat night...e winds 5 to 10 kt, becoming s after midnight. seas
around 2 ft. wave detail: ne 1 foot at 4 seconds and s 1 foot at
7 seconds. patchy fog. vsby 1 to 3 nm. 
.sun...s winds 5 to 10 kt, becoming sw 10 to 15 kt with gusts up
to 20 kt in the afternoon. seas around 2 ft. wave detail: n
1 foot at 4 seconds and s 1 foot at 6 seconds. patchy fog.
showers likely in the morning, then rain and snow likely in the
afternoon. vsby 1 to 3 nm in the morning. 
.sun night...nw winds 10 to 15 kt with gusts up to 25 kt. seas
2 to 3 ft. wave detail: nw 2 ft at 4 seconds and s 1 foot at
5 seconds. patchy fog in the evening. rain and snow likely in the
evening. 
.mon and mon night...n winds 10 to 15 kt. seas 2 to 3 ft. wave
detail: nw 2 ft at 4 seconds and s 1 foot at 6 seconds. 
.tue through wed night...w winds 10 to 15 kt with gusts up to
20 kt. seas around 2 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 172305
cwfbox
expires:202604181200;;547856

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
704 pm edt fri apr 17 2026

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


anz232-181200-
nantucket sound-
704 pm edt fri apr 17 2026

.tonight...ne winds 10 to 15 kt. seas 2 to 3 ft. wave detail: n
2 ft at 3 seconds and s 1 foot at 7 seconds. patchy fog. a slight
chance of showers. a slight chance of tstms this evening. vsby
1 to 3 nm, decreasing to 1 nm or less after midnight. 
.sat...ne winds 10 to 15 kt. seas around 2 ft. wave detail: ne
2 ft at 4 seconds and s 1 foot at 7 seconds. patchy fog. vsby
1 nm or less, increasing to 1 to 3 nm in the afternoon. 
.sat night...e winds 5 to 10 kt, becoming s after midnight. seas
around 2 ft. wave detail: ne 2 ft at 4 seconds and s 1 foot at
7 seconds. patchy fog. vsby 1 to 3 nm. 
.sun...s winds 10 to 15 kt, becoming sw in the afternoon. gusts
up to 20 kt. seas 2 to 3 ft. wave detail: w 2 ft at 3 seconds and
se 2 ft at 7 seconds. patchy fog. showers likely in the morning,
then rain and snow likely in the afternoon. vsby 1 to 3 nm in the
morning. 
.sun night...nw winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. seas 2 to 3 ft. wave detail: w 2 ft at 3 seconds
and s 2 ft at 6 seconds. patchy fog in the evening. rain and snow
likely in the evening. 
.mon and mon night...n winds 10 to 15 kt. seas 2 to 3 ft. wave
detail: nw 2 ft at 3 seconds and ne 2 ft at 6 seconds. 
.tue through wed night...nw winds 15 to 20 kt. seas 2 to 3 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 172305
cwfbox
expires:202604181200;;547857

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
704 pm edt fri apr 17 2026

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


anz233-181200-
vineyard sound-
704 pm edt fri apr 17 2026

.tonight...ne winds around 10 kt. seas 2 to 3 ft. wave detail: sw
3 ft at 7 seconds and n 1 foot at 4 seconds. patchy fog. a slight
chance of showers. a slight chance of tstms this evening. vsby
1 to 3 nm. 
.sat...ne winds 10 to 15 kt. seas around 2 ft. wave detail: n
2 ft at 4 seconds and sw 2 ft at 7 seconds. patchy fog. vsby 1 nm
or less in the morning. 
.sat night...e winds 5 to 10 kt, becoming s after midnight. seas
around 2 ft. wave detail: ne 1 foot at 4 seconds and s 1 foot at
6 seconds. patchy fog. vsby 1 to 3 nm after midnight. 
.sun...s winds 10 to 15 kt, becoming w in the afternoon. gusts up
to 20 kt. seas 2 to 3 ft. wave detail: w 2 ft at 3 seconds and se
2 ft at 7 seconds. patchy fog. showers likely in the morning,
then rain and snow likely in the afternoon. vsby 1 to 3 nm in the
morning. 
.sun night...nw winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. seas 2 to 3 ft. wave detail: sw 3 ft at 5 seconds
and e 1 foot at 8 seconds. patchy fog in the evening. rain and
snow likely in the evening. 
.mon and mon night...n winds 10 to 15 kt. seas 2 to 3 ft. wave
detail: sw 2 ft at 6 seconds and e 1 foot at 8 seconds. 
.tue...ne winds 10 to 15 kt. seas around 2 ft. 
.tue night through wed night...nw winds 15 to 20 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 172305
cwfbox
expires:202604181200;;547858

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
704 pm edt fri apr 17 2026

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


anz234-181200-
buzzards bay-
704 pm edt fri apr 17 2026

.tonight...ne winds 5 to 10 kt. seas around 2 ft. wave detail: sw
2 ft at 7 seconds and n 1 foot at 3 seconds. patchy fog. a slight
chance of showers. a slight chance of tstms this evening. vsby
1 to 3 nm after midnight. 
.sat...ne winds 10 to 15 kt. seas around 2 ft. wave detail: n
1 foot at 3 seconds and sw 1 foot at 7 seconds. patchy fog in the
morning with vsby 1 nm or less. 
.sat night...e winds 5 to 10 kt, becoming s after midnight. seas
around 2 ft in the evening, then 1 foot or less. wave detail: ne
1 foot at 4 seconds and s 1 foot at 6 seconds. patchy fog. vsby
1 to 3 nm after midnight. 
.sun...s winds 10 to 15 kt, becoming w in the afternoon. gusts up
to 20 kt. seas around 2 ft. wave detail: sw 2 ft at 4 seconds and
e 1 foot at 5 seconds. patchy fog. showers likely in the morning,
then rain with snow likely in the afternoon. vsby 1 to 3 nm in
the morning. 
.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 e
1 foot at 7 seconds. patchy fog in the evening. rain and snow
likely in the evening. 
.mon and mon night...n winds 10 to 15 kt. seas around 2 ft. wave
detail: sw 2 ft at 6 seconds and e 2 ft at 7 seconds. 
.tue through wed night...nw winds 15 to 20 kt. seas 2 to 3 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 172305
cwfbox
expires:202604181200;;547859

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
704 pm edt fri apr 17 2026

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


anz235-181200-
rhode island sound-
704 pm edt fri apr 17 2026

.tonight...ne winds 10 to 15 kt. seas 2 to 4 ft. wave detail: s
4 ft at 7 seconds and ne 1 foot at 4 seconds. patchy fog. a
slight chance of showers. a slight chance of tstms this evening.
vsby 1 to 3 nm. 
.sat...ne winds 10 to 15 kt. seas 2 to 3 ft. wave detail: s 3 ft
at 7 seconds and n 2 ft at 4 seconds. patchy fog in the morning
with vsby 1 nm or less. 
.sat night...e winds 5 to 10 kt, becoming s after midnight. seas
around 2 ft. wave detail: ne 2 ft at 4 seconds and s 2 ft at
7 seconds. patchy fog. 
.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 and
w 2 ft at 3 seconds. patchy fog. a chance of rain in the morning,
then rain with snow likely in the afternoon. vsby 1 to 3 nm in
the morning. 
.sun night...nw winds 15 to 20 kt with gusts up to 25 kt. seas
2 to 4 ft. wave detail: w 3 ft at 4 seconds and se 3 ft at
7 seconds. patchy fog in the evening. rain and snow likely in the
evening. 
.mon and mon night...n winds 10 to 15 kt with gusts up to 20 kt.
seas 2 to 3 ft. wave detail: w 2 ft at 3 seconds and se 2 ft at
7 seconds. 
.tue...n winds 10 to 15 kt with gusts up to 20 kt. seas around
2 ft. 
.tue night through wed night...nw winds 15 to 20 kt with gusts up
to 25 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 172305
cwfbox
expires:202604181200;;547862

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
704 pm edt fri apr 17 2026

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


anz236-181200-
narragansett bay-
704 pm edt fri apr 17 2026

.tonight...ne winds 5 to 10 kt. waves 2 to 3 ft. patchy fog. a
slight chance of showers. a slight chance of tstms this evening.
vsby 1 to 3 nm after midnight. 
.sat...ne winds around 10 kt. waves around 2 ft. patchy fog in
the morning with vsby 1 nm or less. 
.sat night...e winds 5 to 10 kt, becoming s after midnight. waves
around 2 ft.  with patchy fog. 
.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.
snow likely in the afternoon. vsby 1 to 3 nm in the morning. 
.sun night...nw winds 10 to 15 kt. gusts up to 20 kt in the
evening. waves 2 to 3 ft. patchy fog in the evening. rain and
snow likely in the evening. 
.mon and mon night...n winds 5 to 10 kt. waves around 2 ft. 
.tue through wed night...nw winds 10 to 15 kt with gusts up to
20 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 172305
cwfbox
expires:202604181200;;547850

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
704 pm edt fri apr 17 2026

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


anz250-181200-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
704 pm edt fri apr 17 2026

.tonight...ne winds 5 to 10 kt, increasing to 10 to 15 kt after
midnight. seas 2 to 3 ft. wave detail: n 2 ft at 4 seconds and se
2 ft at 8 seconds. patchy fog. a slight chance of showers. a
slight chance of tstms this evening. vsby 1 nm or less after
midnight. 
.sat...ne winds 10 to 15 kt. gusts up to 20 kt in the morning.
seas 2 to 4 ft. wave detail: e 3 ft at 7 seconds and n 1 foot at
3 seconds. patchy fog. vsby 1 nm or less in the morning. 
.sat night...e winds 5 to 10 kt, becoming s after midnight. seas
3 to 4 ft. wave detail: e 4 ft at 8 seconds and n 1 foot at
3 seconds. patchy fog. vsby 1 to 3 nm after midnight. 
.sun...s winds 5 to 10 kt, becoming sw 10 to 15 kt with gusts up
to 20 kt in the afternoon. seas 3 to 4 ft. wave detail: e 4 ft at
8 seconds and sw 2 ft at 4 seconds. patchy fog. showers likely in
the morning, then rain with snow likely in the afternoon. vsby
1 to 3 nm in the morning. 
.sun night...nw winds 15 to 20 kt with gusts up to 25 kt. seas
3 to 4 ft. wave detail: e 4 ft at 8 seconds and w 3 ft at
4 seconds. patchy fog in the evening. rain and snow likely in the
evening. 
.mon and mon night...n winds 15 to 20 kt. seas 2 to 4 ft. wave
detail: w 3 ft at 4 seconds and se 2 ft at 7 seconds. 
.tue through wed night...w winds 15 to 20 kt. seas 2 to 3 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 172305
cwfbox
expires:202604181200;;547853

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
704 pm edt fri apr 17 2026

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


anz254-181200-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
704 pm edt fri apr 17 2026

.tonight...ne winds 10 to 15 kt. seas 2 to 4 ft. wave detail: s
3 ft at 7 seconds and n 2 ft at 4 seconds. patchy fog. a slight
chance of showers. a slight chance of tstms this evening. vsby
1 nm or less. 
.sat...ne winds 10 to 15 kt. gusts up to 20 kt in the morning.
seas 2 to 4 ft. wave detail: n 3 ft at 4 seconds and s 3 ft at
7 seconds. patchy fog. vsby 1 nm or less, increasing to 1 to 3 nm
in the afternoon. 
.sat night...e winds 5 to 10 kt, becoming s after midnight. seas
3 to 5 ft. wave detail: e 5 ft at 8 seconds and s 2 ft at
7 seconds. patchy fog. vsby 1 to 3 nm. 
.sun...s winds 10 to 15 kt with gusts up to 20 kt. seas 3 to
5 ft. wave detail: e 5 ft at 8 seconds and sw 3 ft at 5 seconds.
patchy fog. showers likely in the morning, then rain and snow
likely in the afternoon. vsby 1 to 3 nm in the morning. 
.sun night...nw winds 15 to 20 kt with gusts up to 25 kt. seas
3 to 5 ft. wave detail: e 4 ft at 8 seconds and nw 3 ft at
4 seconds. rain and snow likely in the evening, then a chance of
rain after midnight. patchy fog in the evening. 
.mon and mon night...n winds 10 to 15 kt with gusts up to 20 kt.
seas 2 to 4 ft. wave detail: nw 3 ft at 5 seconds and se 2 ft at
7 seconds. 
.tue through wed night...w winds 15 to 20 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 172305
cwfbox
expires:202604181200;;547854

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
704 pm edt fri apr 17 2026

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


anz255-181200-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
704 pm edt fri apr 17 2026

.tonight...ne winds 10 to 15 kt. gusts up to 20 kt this evening.
seas 3 to 4 ft. wave detail: s 4 ft at 7 seconds and n 2 ft at
3 seconds. patchy fog. a slight chance of showers. a slight
chance of tstms this evening. vsby 1 nm or less. 
.sat...ne winds 10 to 15 kt. seas 2 to 4 ft. wave detail: s 3 ft
at 7 seconds and n 2 ft at 4 seconds. patchy fog. vsby 1 nm or
less in the morning. 
.sat night...e winds 5 to 10 kt, becoming s after midnight. seas
2 to 3 ft. wave detail: ne 3 ft at 5 seconds and s 2 ft at
7 seconds. patchy fog. vsby 1 to 3 nm. 
.sun...s winds 10 to 15 kt, becoming sw 15 to 20 kt in the
afternoon. seas 3 to 5 ft. wave detail: sw 4 ft at 4 seconds and
e 4 ft at 8 seconds. patchy fog. showers likely in the morning,
then rain likely in the afternoon. vsby 1 to 3 nm in the morning.
.sun night...nw winds 15 to 20 kt with gusts up to 25 kt. seas
4 to 5 ft. wave detail: w 4 ft at 6 seconds and e 3 ft at
8 seconds. patchy fog in the evening. rain and snow likely in the
evening. 
.mon...w winds 10 to 15 kt. seas 3 to 5 ft. wave detail: w 3 ft
at 5 seconds and se 2 ft at 7 seconds. 
.mon night...nw winds 10 to 15 kt, becoming n 15 to 20 kt after
midnight. seas 2 to 4 ft. 
.tue...n winds 15 to 20 kt. seas 2 to 4 ft. 
.tue night and wed...sw winds 15 to 20 kt. seas 3 to 5 ft. 
.wed night...nw winds 10 to 15 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.

$$