fzus51 kbox 150503
cwfbox
expires:202605151800;;580867

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt fri may 15 2026

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


anz231-151800-
cape cod bay-
103 am edt fri may 15 2026

.rest of tonight...e winds around 5 kt. seas 2 to 3 ft. wave
detail: s 1 foot at 2 seconds and e 1 foot at 4 seconds. areas of
fog. areas of drizzle with a slight chance of showers. vsby 1 nm
or less. 
.fri...ne winds 5 to 10 kt. seas 2 to 4 ft. wave detail: s 1 foot
at 3 seconds and ne 1 foot at 4 seconds. areas of fog. a chance
of showers. areas of drizzle. vsby 1 nm or less, increasing to
1 to 3 nm in the afternoon. 
.fri night...n winds 5 to 10 kt, becoming w after midnight. seas
4 to 5 ft, subsiding to 2 to 4 ft after midnight. wave detail: n
1 foot at 4 seconds, becoming ne 2 ft at 7 seconds and nw 1 foot
at 4 seconds. areas of fog in the evening, then patchy fog after
midnight. vsby 1 to 3 nm, decreasing to 1 nm or less after
midnight. 
.sat...sw winds 10 to 15 kt. gusts up to 25 kt in the afternoon.
seas 2 to 4 ft. wave detail: sw 2 ft at 3 seconds and ne 1 foot
at 6 seconds. patchy fog in the morning with vsby 1 to 3 nm. 
.sat night...sw winds 10 to 15 kt with gusts up to 25 kt. seas
2 to 4 ft. wave detail: sw 2 ft at 3 seconds and e 1 foot at
8 seconds. 
.sun and sun night...n winds 5 to 10 kt with gusts up to 20 kt.
seas around 2 ft. wave detail: sw 1 foot at 3 seconds and e
1 foot at 9 seconds. 
.mon through tue night...sw winds 10 to 15 kt with gusts up to
25 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 150503
cwfbox
expires:202605151800;;580871

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt fri may 15 2026

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


anz232-151800-
nantucket sound-
103 am edt fri may 15 2026

.rest of tonight...w winds around 5 kt. seas 2 to 4 ft. wave
detail: e 2 ft at 7 seconds and sw 1 foot at 6 seconds. areas of
fog. areas of drizzle. vsby 1 nm or less. 
.fri...n winds 5 to 10 kt. seas 3 to 5 ft. wave detail: s 3 ft at
7 seconds. a chance of showers. areas of drizzle. areas of fog in
the morning with vsby 1 nm or less. 
.fri night...n winds 5 to 10 kt, becoming nw after midnight. seas
3 to 5 ft. wave detail: e 3 ft at 7 seconds and sw 1 foot at
6 seconds. patchy fog. vsby 1 to 3 nm, decreasing to 1 nm or less
after midnight. 
.sat...w winds 10 to 15 kt, becoming sw 15 to 20 kt with gusts up
to 25 kt in the afternoon. seas 2 to 3 ft. wave detail: sw 3 ft
at 4 seconds and e 2 ft at 7 seconds. patchy fog in the morning
with vsby 1 nm or less. 
.sat night and sun...sw winds 15 to 20 kt with gusts up to 25 kt.
seas 2 to 3 ft. wave detail: sw 3 ft at 4 seconds and e 2 ft at
8 seconds. 
.sun night...w winds 10 to 15 kt, becoming n 5 to 10 kt after
midnight. seas 2 to 3 ft. wave detail: sw 2 ft at 4 seconds and
se 1 foot at 9 seconds. 
.mon through tue night...sw 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 150503
cwfbox
expires:202605151800;;580872

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt fri may 15 2026

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


anz233-151800-
vineyard sound-
103 am edt fri may 15 2026

.rest of tonight...w winds around 5 kt. seas 2 to 3 ft. wave
detail: e 3 ft at 6 seconds and sw 2 ft at 7 seconds. areas of
fog. areas of drizzle. vsby 1 to 3 nm. 
.fri...nw winds 5 to 10 kt. seas 3 to 4 ft. wave detail: s 3 ft
at 10 seconds and sw 2 ft at 9 seconds. a chance of showers.
areas of fog in the morning with vsby 1 to 3 nm. 
.fri night...n winds 5 to 10 kt, becoming w after midnight. seas
3 to 5 ft. wave detail: e 3 ft at 7 seconds and sw 1 foot at
6 seconds. 
.sat...sw winds 10 to 15 kt, increasing to 15 to 20 kt with gusts
up to 25 kt in the afternoon. seas 2 to 4 ft. wave detail: sw
4 ft at 5 seconds and se 2 ft at 8 seconds. 
.sat night and sun...sw winds 15 to 20 kt with gusts up to 25 kt.
seas 2 to 4 ft. wave detail: sw 4 ft at 5 seconds and se 2 ft at
8 seconds. 
.sun night...sw winds 10 to 15 kt, becoming n around 5 kt after
midnight. seas 2 to 3 ft. wave detail: sw 3 ft at 7 seconds and
se 1 foot at 8 seconds. 
.mon through tue night...sw 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 150503
cwfbox
expires:202605151800;;580873

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt fri may 15 2026

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


anz234-151800-
buzzards bay-
103 am edt fri may 15 2026

.rest of tonight...nw winds around 5 kt. seas 2 to 3 ft. wave
detail: e 2 ft at 6 seconds and sw 1 foot at 7 seconds. areas of
fog. areas of drizzle. vsby 1 to 3 nm. 
.fri...n winds 5 to 10 kt. seas 2 to 4 ft. wave detail: s 2 ft at
10 seconds and sw 1 foot at 8 seconds. a chance of showers. areas
of drizzle in the morning. areas of fog in the morning with vsby
1 to 3 nm. 
.fri night...n winds 5 to 10 kt, becoming w after midnight. seas
2 to 4 ft. wave detail: ne 1 foot at 3 seconds and sw 1 foot at
7 seconds. patchy fog in the evening. 
.sat...sw winds 10 to 15 kt, increasing to 15 to 20 kt with gusts
up to 25 kt in the afternoon. seas 2 to 4 ft. wave detail: sw
3 ft at 4 seconds and se 1 foot at 8 seconds. 
.sat night and sun...sw winds 15 to 20 kt with gusts up to 25 kt.
seas 2 to 4 ft. wave detail: sw 3 ft at 5 seconds and s 1 foot at
8 seconds. 
.sun night...w winds 10 to 15 kt, becoming n around 5 kt after
midnight. seas around 2 ft. wave detail: sw 2 ft at 7 seconds and
se 2 ft at 9 seconds. 
.mon and mon night...e winds 5 to 10 kt, becoming s. seas around
2 ft. 
.tue and tue night...sw 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 150503
cwfbox
expires:202605151800;;580874

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt fri may 15 2026

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


anz235-151800-
rhode island sound-
103 am edt fri may 15 2026

...small craft advisory in effect through late tonight...

.rest of tonight...nw winds around 5 kt. seas 3 to 4 ft. wave
detail: s 4 ft at 8 seconds. areas of fog. vsby 1 to 3 nm. 
.fri...nw winds 5 to 10 kt. seas 4 to 5 ft. wave detail: se 5 ft
at 10 seconds and sw 2 ft at 9 seconds. a chance of showers.
areas of fog in the morning with vsby 1 to 3 nm. 
.fri night...n winds 5 to 10 kt, becoming w after midnight. seas
5 to 6 ft, subsiding to 3 to 5 ft after midnight. wave detail: se
5 ft at 9 seconds and sw 1 foot at 9 seconds, becoming se 4 ft at
9 seconds and sw 1 foot at 7 seconds. 
.sat...sw winds 10 to 15 kt, increasing to 15 to 20 kt with gusts
up to 25 kt in the afternoon. seas 2 to 4 ft. wave detail: sw
4 ft at 4 seconds and se 4 ft at 10 seconds. 
.sat night and sun...sw winds 15 to 20 kt with gusts up to 25 kt.
seas 2 to 3 ft. wave detail: sw 3 ft at 6 seconds and se 3 ft at
9 seconds. 
.sun night...sw winds 10 to 15 kt, becoming n 5 to 10 kt after
midnight. seas 3 to 4 ft. wave detail: sw 4 ft at 7 seconds and
se 3 ft at 10 seconds.
.mon through tue night...sw 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 150503
cwfbox
expires:202605151800;;580877

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt fri may 15 2026

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


anz236-151800-
narragansett bay-
103 am edt fri may 15 2026

.rest of tonight...nw winds around 5 kt. waves 2 to 3 ft. areas
of fog. vsby 1 to 3 nm. 
.fri...n winds 5 to 10 kt. waves 2 to 3 ft. a chance of showers.
areas of fog in the morning with vsby 1 to 3 nm. 
.fri night...n winds 5 to 10 kt, becoming w after midnight. waves
2 to 3 ft. 
.sat...sw winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. waves 2 to 3 ft. 
.sat night and sun...sw winds 10 to 15 kt with gusts up to 20 kt.
waves 2 to 3 ft. 
.sun night...w winds 5 to 10 kt, becoming n after midnight. waves
2 to 3 ft. 
.mon through tue night...sw winds 10 to 15 kt with gusts up to
20 kt. waves 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 150503
cwfbox
expires:202605151800;;580865

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt fri may 15 2026

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


anz250-151800-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
103 am edt fri may 15 2026

...small craft advisory in effect through saturday morning...

.rest of tonight...e winds 10 to 15 kt with gusts up to 20 kt.
seas 3 to 5 ft. wave detail: e 5 ft at 9 seconds and s 1 foot at
6 seconds. areas of fog. a chance of showers with areas of
drizzle. vsby 1 nm or less. 
.fri...ne winds around 10 kt with gusts up to 20 kt. seas 4 to
6 ft. wave detail: e 6 ft at 10 seconds. areas of fog. showers
likely with areas of drizzle in the morning, then a chance of
showers with areas of drizzle in the afternoon. vsby 1 nm or
less, increasing to 1 to 3 nm in the afternoon. 
.fri night...n winds 5 to 10 kt, becoming w after midnight. seas
4 to 6 ft. wave detail: e 6 ft at 10 seconds and nw 1 foot at
3 seconds. areas of fog in the evening. patchy fog after midnight
with vsby 1 to 3 nm. 
.sat...sw winds 10 to 15 kt. gusts up to 25 kt in the afternoon.
seas 3 to 4 ft. wave detail: e 4 ft at 10 seconds and sw 2 ft at
3 seconds. 
.sat night and sun...sw winds 15 to 20 kt with gusts up to 30 kt.
seas 3 to 4 ft. wave detail: s 4 ft at 5 seconds and e 4 ft at
9 seconds. 
.sun night...w winds 5 to 10 kt, becoming ne after midnight. seas
2 to 4 ft. wave detail: se 2 ft at 8 seconds and w 1 foot at
3 seconds. 
.mon through tue night...sw winds 15 to 20 kt with gusts up to
25 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 150503
cwfbox
expires:202605151800;;580868

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt fri may 15 2026

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


anz254-151800-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
103 am edt fri may 15 2026

...small craft advisory in effect through saturday morning...

.rest of tonight...e winds 5 to 10 kt. seas 3 to 5 ft. wave
detail: se 5 ft at 9 seconds and s 1 foot at 6 seconds. areas of
fog. areas of drizzle with a chance of showers. vsby 1 nm or
less. 
.fri...e winds 5 to 10 kt, becoming ne in the afternoon. seas
4 to 6 ft, building to 6 to 7 ft in the afternoon. wave detail:
se 6 ft at 10 seconds and s 2 ft at 6 seconds, becoming e 7 ft at
10 seconds and sw 3 ft at 9 seconds. areas of fog. a chance of
showers. areas of drizzle. vsby 1 nm or less, increasing to 1 to
3 nm in the afternoon. 
.fri night...n winds 5 to 10 kt, becoming nw after midnight. seas
5 to 7 ft. wave detail: e 7 ft at 10 seconds and w 1 foot at
9 seconds. patchy fog. vsby 1 nm or less. 
.sat...sw winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. gusts up to 25 kt. seas 3 to 5 ft. wave detail: e 5 ft
at 10 seconds and sw 3 ft at 4 seconds. patchy fog in the morning
with vsby 1 nm or less. 
.sat night and sun...sw winds 15 to 20 kt with gusts up to 25 kt.
seas 3 to 5 ft. wave detail: sw 4 ft at 5 seconds and e 4 ft at
9 seconds. 
.sun night...w winds 10 to 15 kt, becoming n 5 to 10 kt after
midnight. seas 3 to 4 ft. wave detail: w 3 ft at 6 seconds and se
3 ft at 8 seconds. 
.mon through tue night...sw winds 10 to 15 kt with gusts up to
25 kt. seas 3 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 150503
cwfbox
expires:202605151800;;580869

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt fri may 15 2026

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


anz255-151800-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
103 am edt fri may 15 2026

...small craft advisory in effect through saturday morning...

.rest of tonight...w winds 5 to 10 kt. seas 3 to 5 ft. wave
detail: se 5 ft at 9 seconds and sw 4 ft at 7 seconds. areas of
fog. areas of drizzle. vsby 1 nm or less. 
.fri...nw winds 5 to 10 kt. seas 5 to 7 ft. wave detail: se 7 ft
at 10 seconds and sw 4 ft at 9 seconds. areas of fog in the
morning. areas of drizzle in the morning with vsby 1 nm or less. 
.fri night...n winds 5 to 10 kt, becoming nw after midnight. seas
6 to 7 ft, subsiding to 4 to 6 ft after midnight. wave detail: se
6 ft at 10 seconds and sw 4 ft at 6 seconds, becoming se 6 ft at
10 seconds and sw 3 ft at 7 seconds. patchy fog after midnight
with vsby 1 to 3 nm. 
.sat...w winds 10 to 15 kt, becoming sw 15 to 20 kt in the
afternoon. seas 3 to 5 ft. wave detail: se 5 ft at 10 seconds and
sw 4 ft at 5 seconds.
.sat night and sun...sw winds 15 to 20 kt with gusts up to 25 kt.
seas 3 to 5 ft. wave detail: sw 5 ft at 5 seconds and se 4 ft at
9 seconds. 
.sun night...sw winds 10 to 15 kt with gusts up to 20 kt,
becoming nw 5 to 10 kt after midnight. seas 3 to 5 ft. wave
detail: sw 4 ft at 7 seconds and se 3 ft at 10 seconds. 
.mon through tue night...sw winds 15 to 20 kt. seas 3 to 5 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.

$$