fzus51 kbox 231405
cwfbox
expires:202605240300;;512017

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1005 am edt sat may 23 2026

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


anz231-240300-
cape cod bay-
1005 am edt sat may 23 2026

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

.this afternoon...e winds 5 to 10 kt. seas 1 foot or less. wave
detail: n 1 foot at 4 seconds and s 1 foot at 5 seconds. 
.tonight...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 1 foot at 3 seconds and e 1 foot
at 9 seconds. a chance of rain after midnight. 
.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 4 seconds and e 3 ft at 8 seconds. rain. 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
2 to 4 ft. wave detail: se 4 ft at 5 seconds and e 1 foot at
17 seconds. patchy fog. rain. vsby 1 to 3 nm. 
.mon...w winds 5 to 10 kt. seas 2 to 3 ft. wave detail: se 3 ft
at 8 seconds and sw 1 foot at 3 seconds. rain likely in the
morning, then a chance of showers in the afternoon. 
.mon night...sw winds around 5 kt. seas around 2 ft. wave detail:
se 2 ft at 7 seconds and w 1 foot at 2 seconds. 
.tue through 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 231405
cwfbox
expires:202605240300;;512021

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1005 am edt sat may 23 2026

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


anz232-240300-
nantucket sound-
1005 am edt sat may 23 2026

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

.this afternoon...e winds 5 to 10 kt. seas around 2 ft. wave
detail: e 1 foot at 3 seconds and n 1 foot at 4 seconds. 
.tonight...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 rain after midnight. 
.sun...se winds 15 to 20 kt, increasing to 20 to 25 kt in the
afternoon. gusts up to 30 kt. seas 3 to 5 ft. wave detail: se
4 ft at 8 seconds and e 3 ft at 4 seconds. rain. patchy fog in
the afternoon with vsby 1 to 3 nm. 
.sun night...se winds 20 to 25 kt with gusts up to 30 kt. seas
4 to 6 ft. wave detail: se 5 ft at 5 seconds and s 3 ft at
8 seconds. patchy fog. rain. vsby 1 to 3 nm. 
.mon...sw winds 10 to 15 kt, becoming w 5 to 10 kt in the
afternoon. seas 2 to 4 ft. wave detail: se 3 ft at 9 seconds and
sw 2 ft at 4 seconds. rain likely in the morning, then a chance
of showers in the afternoon. 
.mon night...w winds 5 to 10 kt. seas 2 to 3 ft. wave detail: e
2 ft at 7 seconds and w 1 foot at 3 seconds. 
.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 231405
cwfbox
expires:202605240300;;512022

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1005 am edt sat may 23 2026

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


anz233-240300-
vineyard sound-
1005 am edt sat may 23 2026

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

.this afternoon...e winds 5 to 10 kt. seas around 2 ft. wave
detail: se 2 ft at 10 seconds and ne 1 foot at 3 seconds. 
.tonight...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 rain after midnight. 
.sun...e winds 15 to 20 kt, becoming se 20 to 25 kt in the
afternoon. gusts up to 30 kt. seas 3 to 5 ft. wave detail: se
5 ft at 9 seconds and e 3 ft at 4 seconds. patchy fog. rain. 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 6 ft
at 9 seconds and sw 4 ft at 7 seconds. patchy fog. rain. vsby
1 to 3 nm. 
.mon...w winds 5 to 10 kt. seas 2 to 3 ft. wave detail: sw 3 ft
at 8 seconds and se 3 ft at 9 seconds. rain likely in the
morning, then a chance of showers in the afternoon. 
.mon night...sw winds 5 to 10 kt. seas 2 to 3 ft. wave detail: se
2 ft at 8 seconds and w 1 foot at 2 seconds. 
.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 231405
cwfbox
expires:202605240300;;512023

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1005 am edt sat may 23 2026

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


anz234-240300-
buzzards bay-
1005 am edt sat may 23 2026

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

.this afternoon...e winds 5 to 10 kt. seas 1 foot or less, then
around 2 ft. wave detail: e 1 foot at 2 seconds and nw 1 foot at
4 seconds, becoming e 1 foot at 2 seconds and n 1 foot at
4 seconds. 
.tonight...se winds 10 to 15 kt. seas around 2 ft. wave detail: s
2 ft at 8 seconds and e 1 foot at 2 seconds. a chance of rain
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 9 seconds and e 2 ft at 3 seconds.
patchy fog. rain. vsby 1 to 3 nm.
.sun night...se winds 20 to 25 kt, becoming s 15 to 20 kt after
midnight. gusts up to 30 kt. seas 2 to 4 ft. wave detail: s 4 ft
at 8 seconds and e 3 ft at 4 seconds. patchy fog. rain. vsby 1 to
3 nm. 
.mon...w winds 5 to 10 kt. seas around 2 ft. wave detail: sw 2 ft
at 6 seconds and se 2 ft at 9 seconds. rain likely in the
morning, then a chance of showers in the afternoon. 
.mon night...sw winds 5 to 10 kt. seas around 2 ft. wave detail:
se 2 ft at 8 seconds and w 1 foot at 2 seconds. 
.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 231405
cwfbox
expires:202605240300;;512024

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1005 am edt sat may 23 2026

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


anz235-240300-
rhode island sound-
1005 am edt sat may 23 2026

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

.this afternoon...e winds around 10 kt. seas 2 to 3 ft. wave
detail: se 3 ft at 8 seconds and e 2 ft at 4 seconds. 
.tonight...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 8 seconds and ne 1 foot at 3 seconds,
becoming se 4 ft at 8 seconds and ne 2 ft at 5 seconds. rain
likely 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 5 seconds.
patchy fog. rain. vsby 1 to 3 nm.
.sun night...se winds 20 to 25 kt, becoming s 15 to 20 kt after
midnight. gusts up to 30 kt. seas 5 to 8 ft. wave detail: se 8 ft
at 9 seconds and sw 5 ft at 9 seconds. patchy fog. rain. vsby
1 to 3 nm. 
.mon...w winds 5 to 10 kt. seas 3 to 5 ft. wave detail: se 5 ft
at 9 seconds and sw 4 ft at 10 seconds. rain likely in the
morning, then a chance of showers in the afternoon. 
.mon night...w winds 5 to 10 kt. seas 3 to 4 ft. wave detail: se
4 ft at 8 seconds and s 2 ft at 7 seconds. 
.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.

$$

fzus51 kbox 231405
cwfbox
expires:202605240300;;512027

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1005 am edt sat may 23 2026

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


anz236-240300-
narragansett bay-
1005 am edt sat may 23 2026

.this afternoon...e winds 5 to 10 kt. waves around 2 ft. 
.tonight...se winds 10 to 15 kt. gusts up to 20 kt after
midnight. waves 2 to 3 ft. rain likely after midnight. 
.sun...e winds 15 to 20 kt with gusts up to 25 kt. waves 3 to
5 ft. patchy fog. rain. vsby 1 to 3 nm. 
.sun night...se winds 15 to 20 kt, becoming s 10 to 15 kt after
midnight. gusts up to 25 kt. waves 3 to 5 ft. patchy fog. rain.
vsby 1 to 3 nm. 
.mon...nw winds 5 to 10 kt, becoming w in the afternoon. waves
2 to 3 ft. a chance of rain in the morning. 
.mon night...w winds around 5 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 231405
cwfbox
expires:202605240300;;512015

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1005 am edt sat may 23 2026

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


anz250-240300-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
1005 am edt sat may 23 2026

...small craft advisory in effect from sunday afternoon through
monday evening...

.this afternoon...e winds 5 to 10 kt. seas 1 foot or less, then
around 2 ft. wave detail: nw 1 foot at 2 seconds and s 1 foot at
3 seconds, becoming nw 1 foot at 2 seconds and e 1 foot at
3 seconds. 
.tonight...se winds 5 to 10 kt. seas around 2 ft. wave detail: se
2 ft at 9 seconds and e 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 4 ft. wave detail: se
3 ft at 5 seconds. a chance of rain in the morning, then rain 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 30 kt. seas
4 to 6 ft. wave detail: se 6 ft at 8 seconds and se 4 ft at
5 seconds. patchy fog. rain. vsby 1 to 3 nm. 
.mon...w winds 5 to 10 kt. gusts up to 20 kt in the morning. seas
4 to 6 ft. wave detail: se 6 ft at 9 seconds and e 3 ft at
7 seconds. rain likely in the morning. 
.mon night...sw winds around 5 kt. seas 2 to 4 ft. wave detail:
se 4 ft at 8 seconds and s 2 ft at 7 seconds. 
.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.

$$

fzus51 kbox 231405
cwfbox
expires:202605240300;;512018

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1005 am edt sat may 23 2026

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


anz254-240300-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
1005 am edt sat may 23 2026

...small craft advisory in effect from 8 pm edt this evening
through monday evening...

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

$$

fzus51 kbox 231405
cwfbox
expires:202605240300;;512019

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1005 am edt sat may 23 2026

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


anz255-240300-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
1005 am edt sat may 23 2026

...small craft advisory in effect from 8 pm edt this evening
through monday evening...

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

$$