fzus51 kbox 230505
cwfbox
expires:202605231800;;490688

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 am edt sat may 23 2026

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


anz231-231800-
cape cod bay-
104 am edt sat may 23 2026

...small craft advisory in effect from late tonight through late
sunday night...

.rest of tonight...w winds around 5 kt. seas 1 foot or less. wave
detail: n 1 foot at 4 seconds and s 1 foot at 6 seconds. 
.sat...ne winds around 5 kt, becoming e in the afternoon. seas
1 foot or less. wave detail: n 1 foot at 4 seconds and s 1 foot
at 7 seconds. 
.sat night...se winds 5 to 10 kt. seas 1 foot or less, then
around 2 ft after midnight. wave detail: e 1 foot at 2 seconds
and n 1 foot at 3 seconds, becoming e 2 ft at 9 seconds and se
1 foot at 3 seconds. 
.sun...se winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. gusts up to 25 kt. seas 2 to 3 ft. wave detail: se
3 ft at 5 seconds and n 1 foot at 3 seconds. patchy fog. showers.
vsby 1 to 3 nm in the afternoon. 
.sun night...se winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. gusts up to 25 kt. seas 2 to 4 ft. wave detail:
se 4 ft at 5 seconds. showers. patchy fog in the evening with
vsby 1 to 3 nm. 
.mon...sw winds 5 to 10 kt, becoming nw in the afternoon. seas
2 to 3 ft. wave detail: e 2 ft at 4 seconds and s 2 ft at
5 seconds. showers likely, mainly in the morning. 
.mon night...w winds around 5 kt. seas around 2 ft. a chance of
showers in the evening. 
.tue and tue night...sw winds 5 to 10 kt. seas around 2 ft. 
.wed...w winds 5 to 10 kt. seas 1 foot or less. a chance of
showers. 
.wed night...nw winds 5 to 10 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 230505
cwfbox
expires:202605231800;;490692

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 am edt sat may 23 2026

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


anz232-231800-
nantucket sound-
104 am edt sat may 23 2026

...small craft advisory in effect from late tonight through late
sunday night...

.rest of tonight...e winds around 5 kt. seas 1 foot or less. wave
detail: ne 1 foot at 4 seconds and s 1 foot at 6 seconds. 
.sat...e winds 5 to 10 kt. seas around 2 ft. wave detail: e
1 foot at 4 seconds and n 1 foot at 4 seconds. 
.sat night...se winds 10 to 15 kt. gusts up to 20 kt after
midnight. seas around 2 ft. wave detail: e 2 ft at 3 seconds and
n 1 foot at 4 seconds. a chance of showers after midnight. 
.sun...se winds 15 to 20 kt, increasing to 20 to 25 kt in the
afternoon. seas 3 to 5 ft. wave detail: se 4 ft at 5 seconds and
sw 2 ft at 9 seconds. patchy fog. showers. vsby 1 to 3 nm in the
afternoon. 
.sun night...se winds 20 to 25 kt, becoming s 15 to 20 kt after
midnight. gusts up to 30 kt. seas 4 to 6 ft. wave detail: se 5 ft
at 6 seconds and sw 2 ft at 8 seconds. showers. patchy fog in the
evening with vsby 1 to 3 nm. 
.mon...sw winds 5 to 10 kt, becoming w in the afternoon. seas
2 to 4 ft. wave detail: se 3 ft at 7 seconds and w 1 foot at
4 seconds. showers likely, mainly in the morning. 
.mon night...w winds 5 to 10 kt. seas 2 to 3 ft. a chance of
showers in the evening. 
.tue through wed night...nw winds 5 to 10 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 230505
cwfbox
expires:202605231800;;490693

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 am edt sat may 23 2026

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


anz233-231800-
vineyard sound-
104 am edt sat may 23 2026

...small craft advisory in effect from late tonight through late
sunday night...

.rest of tonight...e winds around 5 kt. seas 1 foot or less. wave
detail: ne 1 foot at 3 seconds and s 1 foot at 7 seconds. 
.sat...e winds 5 to 10 kt. seas around 2 ft. wave detail: se 2 ft
at 11 seconds and ne 1 foot at 3 seconds. 
.sat night...se winds 10 to 15 kt. gusts up to 20 kt after
midnight. seas 2 to 3 ft. wave detail: se 2 ft at 8 seconds and e
1 foot at 2 seconds. a chance of showers after midnight. 
.sun...e winds 15 to 20 kt, becoming se 20 to 25 kt in the
afternoon. seas 3 to 5 ft. wave detail: se 5 ft at 8 seconds and
sw 4 ft at 9 seconds. patchy fog. showers. vsby 1 to 3 nm in the
afternoon. 
.sun night...se winds 20 to 25 kt with gusts up to 30 kt,
becoming s 10 to 15 kt with gusts up to 20 kt after midnight.
seas 4 to 6 ft. wave detail: se 6 ft at 8 seconds and s 3 ft at
10 seconds. showers. patchy fog in the evening with vsby 1 to
3 nm. 
.mon...sw winds 5 to 10 kt. seas 2 to 3 ft. wave detail: e 3 ft
at 7 seconds and sw 2 ft at 7 seconds. showers likely, mainly in
the morning. 
.mon night...sw winds 5 to 10 kt. seas 2 to 3 ft. a chance of
showers in the evening. 
.tue through wed night...nw 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 230505
cwfbox
expires:202605231800;;490694

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 am edt sat may 23 2026

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


anz234-231800-
buzzards bay-
104 am edt sat may 23 2026

...small craft advisory in effect from late tonight through late
sunday night...

.rest of tonight...e winds around 5 kt. seas 1 foot or less. wave
detail: ne 1 foot at 3 seconds and s 1 foot at 6 seconds. 
.sat...e winds 5 to 10 kt, becoming se in the afternoon. seas
1 foot or less, then around 2 ft in the afternoon. wave detail:
ne 1 foot at 3 seconds and s 1 foot at 7 seconds, becoming e
1 foot at 2 seconds and n 1 foot at 4 seconds. 
.sat night...se winds 10 to 15 kt. seas around 2 ft. wave detail:
se 2 ft at 8 seconds and e 1 foot at 2 seconds. a chance of
showers after midnight. 
.sun...e winds 15 to 20 kt with gusts up to 25 kt. seas 2 to
4 ft. wave detail: se 4 ft at 6 seconds and e 2 ft at 3 seconds.
patchy fog. showers. vsby 1 to 3 nm in the afternoon. 
.sun night...se winds 20 to 25 kt with gusts up to 30 kt,
becoming s 10 to 15 kt with gusts up to 20 kt after midnight.
seas 2 to 4 ft. wave detail: s 4 ft at 6 seconds. showers. patchy
fog in the evening with vsby 1 to 3 nm. 
.mon...w winds 5 to 10 kt. seas 2 to 3 ft. wave detail: se 3 ft
at 9 seconds and w 1 foot at 2 seconds. showers likely, mainly in
the morning. 
.mon night...sw winds 5 to 10 kt. seas around 2 ft. a chance of
showers in the evening. 
.tue through wed night...nw 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 230505
cwfbox
expires:202605231800;;490695

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 am edt sat may 23 2026

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


anz235-231800-
rhode island sound-
104 am edt sat may 23 2026

...small craft advisory in effect from late tonight through late
sunday night...

.rest of tonight...e winds around 5 kt. seas around 2 ft. wave
detail: ne 1 foot at 3 seconds and s 1 foot at 6 seconds. 
.sat...e winds 5 to 10 kt. seas 2 to 3 ft. wave detail: se 3 ft
at 7 seconds and ne 2 ft at 3 seconds. 
.sat night...e winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. seas 2 to 3 ft, building to 3 to 5 ft after midnight.
wave detail: se 3 ft at 7 seconds and ne 1 foot at 3 seconds,
becoming se 5 ft at 8 seconds and e 2 ft at 3 seconds. a chance
of showers after midnight. 
.sun...e winds 20 to 25 kt with gusts up to 30 kt. seas 5 to
7 ft. wave detail: se 7 ft at 9 seconds and e 4 ft at 4 seconds.
patchy fog. showers. vsby 1 to 3 nm, decreasing to 1 nm or less
in the afternoon. 
.sun night...se winds 20 to 25 kt with gusts up to 30 kt,
becoming s 10 to 15 kt with gusts up to 20 kt after midnight.
seas 5 to 8 ft. wave detail: se 8 ft at 9 seconds and e 4 ft at
7 seconds. showers. patchy fog in the evening with vsby 1 to
3 nm. 
.mon...w winds 5 to 10 kt. seas 3 to 5 ft. wave detail: se 5 ft
at 8 seconds and sw 2 ft at 10 seconds. showers likely, mainly in
the morning. 
.mon night...w winds 5 to 10 kt. seas 2 to 4 ft. a chance of
showers in the evening. 
.tue through wed 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 230505
cwfbox
expires:202605231800;;490698

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 am edt sat may 23 2026

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


anz236-231800-
narragansett bay-
104 am edt sat may 23 2026

.rest of tonight...e winds around 5 kt. waves around 2 ft. 
.sat...e winds 5 to 10 kt, becoming se in the afternoon. waves
around 2 ft. 
.sat night...se winds 5 to 10 kt, increasing to 10 to 15 kt with
gusts up to 20 kt after midnight. waves 2 to 3 ft. showers likely
after midnight. 
.sun...e winds 15 to 20 kt with gusts up to 25 kt. waves 3 to
5 ft. patchy fog. showers. vsby 1 to 3 nm, decreasing to 1 nm or
less in the afternoon. 
.sun night...se winds 15 to 20 kt with gusts up to 25 kt,
diminishing to 5 to 10 kt after midnight. waves 2 to 4 ft.
showers. patchy fog in the evening with vsby 1 to 3 nm. 
.mon...nw winds 5 to 10 kt, becoming w in the afternoon. waves
2 to 4 ft. a chance of showers. 
.mon night...w winds 5 to 10 kt. waves 2 to 3 ft. 
.tue through wed night...nw winds 5 to 10 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 230505
cwfbox
expires:202605231800;;490686

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 am edt sat may 23 2026

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


anz250-231800-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
104 am edt sat may 23 2026

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

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 230505
cwfbox
expires:202605231800;;490689

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 am edt sat may 23 2026

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


anz254-231800-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
104 am edt sat may 23 2026

...small craft advisory in effect from this evening through late
sunday night...

.rest of tonight...ne winds around 5 kt. seas around 2 ft. wave
detail: n 1 foot at 4 seconds and s 1 foot at 6 seconds. 
.sat...e winds 5 to 10 kt. seas around 2 ft. wave detail: n
1 foot at 4 seconds and s 1 foot at 6 seconds. 
.sat night...e winds 5 to 10 kt, becoming se 10 to 15 kt after
midnight. seas 2 to 3 ft. wave detail: ne 2 ft at 3 seconds and
se 2 ft at 8 seconds. 
.sun...se winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. gusts up to 25 kt. seas 2 to 4 ft, building to 4 to
6 ft in the afternoon. wave detail: se 4 ft at 7 seconds and e
3 ft at 4 seconds, becoming se 6 ft at 5 seconds and s 1 foot at
10 seconds. patchy fog. showers. vsby 1 to 3 nm in the afternoon.
.sun night...se winds 20 to 25 kt, diminishing to 15 to 20 kt
after midnight. gusts up to 30 kt. seas 5 to 8 ft. wave detail:
se 8 ft at 8 seconds and e 3 ft at 4 seconds. showers. patchy fog
in the evening with vsby 1 to 3 nm. 
.mon...s winds 10 to 15 kt, becoming w 5 to 10 kt in the
afternoon. seas 5 to 7 ft. wave detail: se 7 ft at 8 seconds and
ne 2 ft at 8 seconds. showers likely, mainly in the morning. 
.mon night...w winds 5 to 10 kt. seas 3 to 5 ft. a chance of
showers in the evening. 
.tue through wed night...nw winds 5 to 10 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 230505
cwfbox
expires:202605231800;;490690

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 am edt sat may 23 2026

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


anz255-231800-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
104 am edt sat may 23 2026

...small craft advisory in effect from this evening through late
sunday night...

.rest of tonight...e winds around 5 kt. seas around 2 ft. wave
detail: ne 2 ft at 4 seconds and s 1 foot at 6 seconds. 
.sat...e winds 5 to 10 kt. seas 2 to 3 ft. wave detail: e 2 ft at
4 seconds and se 2 ft at 9 seconds. 
.sat night...e winds 10 to 15 kt. gusts up to 20 kt after
midnight. seas 2 to 4 ft. wave detail: ne 4 ft at 4 seconds and
se 4 ft at 8 seconds. a chance of showers after midnight. 
.sun...e winds 15 to 20 kt, becoming se 20 to 25 kt in the
afternoon. gusts up to 30 kt. seas 4 to 6 ft, building to 5 to
8 ft in the afternoon. wave detail: se 6 ft at 8 seconds and e
4 ft at 4 seconds, becoming se 8 ft at 9 seconds and e 4 ft at
4 seconds. patchy fog. showers. vsby 1 to 3 nm in the afternoon. 
.sun night...se winds 20 to 25 kt, becoming s 15 to 20 kt after
midnight. gusts up to 30 kt. seas 7 to 9 ft, subsiding to 5 to
8 ft after midnight. wave detail: se 9 ft at 9 seconds and e 5 ft
at 5 seconds, becoming s 8 ft at 8 seconds and ne 2 ft at
9 seconds. showers. patchy fog in the evening with vsby 1 to
3 nm. 
.mon...sw winds around 10 kt. seas 4 to 6 ft. wave detail: se
6 ft at 8 seconds and s 4 ft at 7 seconds. showers likely, mainly
in the morning. 
.mon night...w winds 5 to 10 kt. seas 3 to 5 ft. a chance of
showers. 
.tue through wed night...nw 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.

$$