fzus51 kbox 202004
cwfbox
expires:202603210900;;022049

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 pm edt fri mar 20 2026

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


anz231-210900-
cape cod bay-
404 pm edt fri mar 20 2026

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

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

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 202004
cwfbox
expires:202603210900;;022053

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 pm edt fri mar 20 2026

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


anz232-210900-
nantucket sound-
404 pm edt fri mar 20 2026

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

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

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 202004
cwfbox
expires:202603210900;;022054

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 pm edt fri mar 20 2026

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


anz233-210900-
vineyard sound-
404 pm edt fri mar 20 2026

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

.tonight...sw winds 20 to 25 kt with gusts up to 30 kt. seas 3 to
5 ft. wave detail: sw 5 ft at 7 seconds and se 2 ft at 9 seconds.
patchy fog. rain. vsby 1 to 3 nm after midnight. 
.sat...w winds 10 to 15 kt with gusts up to 20 kt, becoming nw in
the afternoon. seas 2 to 4 ft. wave detail: sw 4 ft at 7 seconds
and se 2 ft at 8 seconds. patchy fog in the morning. a chance of
rain in the morning with vsby 1 to 3 nm. 
.sat night...n winds 5 to 10 kt, becoming se after midnight. seas
2 to 3 ft. wave detail: sw 2 ft at 7 seconds and se 1 foot at
8 seconds. 
.sun...s winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. wave detail: s 3 ft at 5 seconds and se 1 foot at
8 seconds. a chance of rain in the afternoon.
.sun night and mon...n winds 15 to 20 kt. seas 2 to 3 ft. wave
detail: sw 3 ft at 5 seconds and se 2 ft at 8 seconds. rain
likely . 
.mon night...n winds 15 to 20 kt. seas 2 to 3 ft. wave detail: nw
2 ft at 5 seconds and ne 2 ft at 5 seconds. 
.tue and tue night...nw winds 15 to 20 kt, becoming sw. seas 2 to
3 ft. 
.wed...sw winds 15 to 20 kt with gusts up to 25 kt. seas 2 to
4 ft. a chance of rain. 
.wed night...nw winds 20 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 202004
cwfbox
expires:202603210900;;022055

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 pm edt fri mar 20 2026

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


anz234-210900-
buzzards bay-
404 pm edt fri mar 20 2026

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

.tonight...sw winds 20 to 25 kt with gusts up to 30 kt. seas 2 to
4 ft. wave detail: sw 4 ft at 5 seconds and se 2 ft at 8 seconds.
patchy fog. rain. vsby 1 to 3 nm after midnight. 
.sat...w winds 10 to 15 kt, becoming nw in the afternoon. seas
2 to 3 ft. wave detail: sw 3 ft at 7 seconds and se 2 ft at
9 seconds. patchy fog in the morning. a chance of rain in the
morning with vsby 1 to 3 nm. 
.sat night...n winds 5 to 10 kt, becoming s after midnight. seas
around 2 ft. wave detail: sw 2 ft at 7 seconds and e 1 foot at
8 seconds. 
.sun...s winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. wave detail: s 3 ft at 4 seconds and se 1 foot at
8 seconds. a chance of rain in the afternoon.
.sun night and mon...n winds 15 to 20 kt. seas 2 to 3 ft. wave
detail: ne 2 ft at 3 seconds and sw 2 ft at 5 seconds. rain
likely . 
.mon night...n winds around 15 kt with gusts up to 20 kt. seas
2 to 3 ft. wave detail: n 2 ft at 4 seconds. 
.tue and tue night...nw winds 10 to 15 kt, becoming sw 15 to
20 kt. seas 2 to 3 ft. 
.wed...sw winds 15 to 20 kt with gusts up to 25 kt. seas 2 to
3 ft. a chance of rain. 
.wed night...nw winds 15 to 20 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 202004
cwfbox
expires:202603210900;;022056

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 pm edt fri mar 20 2026

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


anz235-210900-
rhode island sound-
404 pm edt fri mar 20 2026

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

.tonight...s winds 20 to 25 kt, becoming sw 15 to 20 kt after
midnight. gusts up to 30 kt. seas 4 to 6 ft. wave detail: s 6 ft
at 7 seconds and se 2 ft at 9 seconds. patchy fog. rain. vsby
1 to 3 nm. 
.sat...w winds 10 to 15 kt with gusts up to 20 kt, becoming nw in
the afternoon. seas 3 to 5 ft. wave detail: sw 5 ft at 8 seconds
and se 3 ft at 8 seconds. patchy fog in the morning. a chance of
rain in the morning with vsby 1 to 3 nm. 
.sat night...ne winds 5 to 10 kt, becoming se after midnight.
seas 2 to 4 ft. wave detail: sw 4 ft at 7 seconds and se 3 ft at
8 seconds. patchy fog after midnight with vsby 1 to 3 nm. 
.sun...s winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. wave detail: s 3 ft at 5 seconds and se 2 ft at 8 seconds.
patchy fog in the morning. a chance of rain in the afternoon.
vsby 1 nm or less in the morning. 
.sun night and mon...n winds 15 to 20 kt. seas 3 to 5 ft. wave
detail: ne 5 ft at 6 seconds and s 4 ft at 6 seconds. rain likely
. 
.mon night...n winds 15 to 20 kt. seas 2 to 4 ft. wave detail: e
4 ft at 7 seconds and nw 3 ft at 3 seconds. 
.tue and tue night...nw winds 15 to 20 kt, becoming sw. gusts up
to 25 kt. seas 2 to 3 ft. 
.wed...sw winds 20 to 25 kt. seas around 3 ft. a chance of rain. 
.wed night...nw winds 20 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 202004
cwfbox
expires:202603210900;;022059

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 pm edt fri mar 20 2026

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


anz236-210900-
narragansett bay-
404 pm edt fri mar 20 2026

...small craft advisory in effect until 2 am edt saturday...

.tonight...sw winds 15 to 20 kt with gusts up to 30 kt. waves
2 to 4 ft. patchy fog. rain. vsby 1 to 3 nm. 
.sat...nw winds around 10 kt. waves 2 to 3 ft. patchy fog in the
morning. 
.sat night...n winds 5 to 10 kt, becoming s after midnight. waves
2 to 3 ft. 
.sun...s winds 10 to 15 kt with gusts up to 20 kt. waves 2 to
3 ft. a chance of rain in the afternoon. 
.sun night and mon...n winds 10 to 15 kt with gusts up to 20 kt.
waves 2 to 3 ft. rain likely . 
.mon night...n winds 10 to 15 kt. gusts up to 20 kt in the
evening. waves 2 to 3 ft. 
.tue and tue night...nw winds 10 to 15 kt, becoming sw with gusts
up to 20 kt. waves around 2 ft. 
.wed...sw winds 10 to 15 kt with gusts up to 20 kt. waves 2 to
3 ft. a chance of rain. 
.wed night...nw 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 202004
cwfbox
expires:202603210900;;022047

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 pm edt fri mar 20 2026

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


anz250-210900-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
404 pm edt fri mar 20 2026

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

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

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 202004
cwfbox
expires:202603210900;;022050

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 pm edt fri mar 20 2026

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


anz254-210900-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
404 pm edt fri mar 20 2026

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

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

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 202004
cwfbox
expires:202603210900;;022051

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 pm edt fri mar 20 2026

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


anz255-210900-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
404 pm edt fri mar 20 2026

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

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

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.

$$