fzus51 kbox 181105
cwfbox
expires:202604190000;;576848

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

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


anz231-190000-
cape cod bay-
704 am edt sat apr 18 2026

.today...ne winds 10 to 15 kt with gusts up to 20 kt. seas around
2 ft. wave detail: n 1 foot at 3 seconds and s 1 foot at
8 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
around 2 ft. wave detail: ne 1 foot at 3 seconds and s 1 foot 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 5 to 10 kt, becoming w 10 to 15 kt with gusts up
to 20 kt in the afternoon. seas around 2 ft. wave detail: n 2 ft
at 5 seconds and s 1 foot at 7 seconds. patchy fog. a chance of
rain in the morning, then rain in the afternoon. vsby 1 to 3 nm. 
.sun night...nw winds 10 to 15 kt with gusts up to 20 kt. seas
2 to 3 ft. wave detail: nw 2 ft at 4 seconds and s 1 foot at
5 seconds. rain, mainly in the evening. patchy fog in the
evening. 
.mon...nw winds 5 to 10 kt. seas around 2 ft. wave detail: nw
2 ft at 4 seconds and ne 1 foot at 6 seconds. 
.mon night...n winds 5 to 10 kt, increasing to 10 to 15 kt with
gusts up to 20 kt after midnight. seas around 2 ft. wave detail:
n 2 ft at 5 seconds and s 1 foot at 7 seconds. 
.tue through wed night...w winds 10 to 15 kt with gusts up to
20 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 181105
cwfbox
expires:202604190000;;576852

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

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


anz232-190000-
nantucket sound-
704 am edt sat apr 18 2026

.today...ne winds 10 to 15 kt with gusts up to 20 kt. seas around
2 ft. wave detail: n 2 ft at 3 seconds and s 1 foot at 7 seconds.
areas of fog. vsby 1 to 3 nm. 
.tonight...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. 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 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. a chance of rain in the
morning, then rain in the afternoon. vsby 1 to 3 nm. 
.sun night...nw 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 e 2 ft at
8 seconds. rain, mainly in the evening. patchy fog in the
evening. 
.mon...w winds 5 to 10 kt. seas 2 to 3 ft. wave detail: w 2 ft at
3 seconds and s 1 foot at 6 seconds. 
.mon night...nw winds 5 to 10 kt, becoming n 10 to 15 kt after
midnight. seas around 2 ft. wave detail: nw 2 ft at 3 seconds and
s 1 foot at 6 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 181105
cwfbox
expires:202604190000;;576853

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

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


anz233-190000-
vineyard sound-
704 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: sw 2 ft at 7 seconds and n 1 foot at
4 seconds. areas of fog. vsby 1 to 3 nm. 
.tonight...e winds 5 to 10 kt, becoming s after midnight. seas
around 2 ft. wave detail: ne 1 foot at 3 seconds and s 1 foot 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 in the afternoon. gusts up
to 20 kt. seas 2 to 3 ft. wave detail: sw 3 ft at 5 seconds and e
1 foot at 6 seconds. patchy fog. a chance of rain in the morning.
rain in the afternoon. vsby 1 to 3 nm. 
.sun night...nw winds 15 to 20 kt, becoming w 10 to 15 kt after
midnight. seas 2 to 3 ft. wave detail: w 3 ft at 5 seconds and se
3 ft at 7 seconds. rain, mainly in the evening. patchy fog in the
evening. 
.mon...w winds around 10 kt. seas around 2 ft. wave detail: sw
2 ft at 6 seconds and e 1 foot at 7 seconds. 
.mon night...nw winds 10 to 15 kt, becoming n after midnight.
seas around 2 ft. wave detail: sw 2 ft at 5 seconds and e 1 foot
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 181105
cwfbox
expires:202604190000;;576854

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

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


anz234-190000-
buzzards bay-
704 am edt sat apr 18 2026

.today...ne winds 10 to 15 kt. seas around 2 ft. wave detail: n
2 ft at 3 seconds and sw 1 foot at 7 seconds. areas of fog. vsby
1 nm or less this morning. 
.tonight...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. 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 with gusts up to 20 kt in
the afternoon. seas around 2 ft. wave detail: sw 2 ft at
4 seconds and e 1 foot at 6 seconds. patchy fog. a chance of rain
in the morning, then rain in the afternoon. vsby 1 to 3 nm. 
.sun night...nw winds 10 to 15 kt. gusts up to 20 kt in the
evening. seas around 2 ft. wave detail: nw 2 ft at 3 seconds and
sw 2 ft at 5 seconds. rain, mainly in the evening. patchy fog in
the evening. 
.mon...w winds around 10 kt. seas around 2 ft. wave detail: w
1 foot at 5 seconds and e 1 foot at 8 seconds. 
.mon night...nw winds around 10 kt, becoming n after midnight.
seas around 2 ft. wave detail: ne 2 ft at 6 seconds and sw 1 foot
at 5 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 181105
cwfbox
expires:202604190000;;576855

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

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


anz235-190000-
rhode island sound-
704 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 181105
cwfbox
expires:202604190000;;576858

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

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


anz236-190000-
narragansett bay-
704 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 181105
cwfbox
expires:202604190000;;576846

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

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


anz250-190000-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
704 am edt sat apr 18 2026

.today...ne winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. wave detail: n 3 ft at 4 seconds and se 2 ft at 8 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 se after midnight. seas
3 to 5 ft. wave detail: e 4 ft at 7 seconds and n 1 foot at
3 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 5 to 10 kt, becoming w 10 to 15 kt with gusts up
to 20 kt in the afternoon. seas 3 to 5 ft. wave detail: e 4 ft at
8 seconds and s 1 foot at 8 seconds. patchy fog. a chance of rain
in the morning, then rain in the afternoon. vsby 1 to 3 nm,
decreasing to 1 nm or less in the afternoon. 
.sun night...nw winds 15 to 20 kt with gusts up to 25 kt. seas
3 to 4 ft. wave detail: se 4 ft at 7 seconds and nw 3 ft at
4 seconds. rain, mainly in the evening. patchy fog in the
evening. 
.mon...w winds 10 to 15 kt with gusts up to 20 kt, diminishing to
5 to 10 kt in the afternoon. seas 2 to 4 ft. wave detail: w 2 ft
at 4 seconds and se 2 ft at 7 seconds. 
.mon night...n winds 10 to 15 kt. gusts up to 20 kt after
midnight. seas 2 to 3 ft. wave detail: n 3 ft at 4 seconds and e
3 ft at 8 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.

$$

fzus51 kbox 181105
cwfbox
expires:202604190000;;576849

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

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


anz254-190000-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
704 am edt sat apr 18 2026

.today...ne winds 10 to 15 kt with gusts up to 20 kt. seas 2 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...e winds 5 to 10 kt, becoming s after midnight. seas
3 to 5 ft. wave detail: e 5 ft at 7 seconds and s 2 ft at
7 seconds. patchy fog. 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. seas 3 to 5 ft. wave detail: e 5 ft at 8 seconds and
sw 3 ft at 5 seconds. patchy fog. rain likely in the afternoon.
vsby 1 nm or less. 
.sun night...nw winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. gusts up to 25 kt. seas 3 to 5 ft. wave detail: e
4 ft at 7 seconds and nw 3 ft at 4 seconds. rain, mainly in the
evening. patchy fog in the evening. 
.mon...nw winds 10 to 15 kt, becoming w 5 to 10 kt in the
afternoon. seas 2 to 4 ft. wave detail: nw 2 ft at 5 seconds and
se 2 ft at 7 seconds. 
.mon night...w winds 5 to 10 kt, becoming n 10 to 15 kt with
gusts up to 20 kt after midnight. seas 2 to 3 ft. wave detail: n
2 ft at 4 seconds and se 2 ft at 7 seconds. 
.tue through wed night...w winds 10 to 15 kt with gusts up 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.

$$

fzus51 kbox 181105
cwfbox
expires:202604190000;;576850

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

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


anz255-190000-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
704 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.

$$