fzus51 kbox 211704
cwfbox
expires:202603220600;;066011

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 pm edt sat mar 21 2026

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


anz231-220600-
cape cod bay-
104 pm edt sat mar 21 2026

.this afternoon...n winds 10 to 15 kt with gusts up to 25 kt.
seas 2 to 3 ft. wave detail: e 2 ft at 8 seconds and nw 1 foot at
4 seconds. 
.tonight...ne winds around 5 kt, becoming e after midnight. seas
around 2 ft. wave detail: nw 1 foot at 4 seconds and e 1 foot at
7 seconds. 
.sun...s winds 10 to 15 kt with gusts up to 25 kt. seas 2 to
3 ft. wave detail: s 2 ft at 3 seconds and ne 1 foot at
6 seconds. rain.
.sun night...w winds around 10 kt with gusts up to 20 kt,
becoming n with gusts up to 30 kt after midnight. seas 2 to 3 ft.
wave detail: sw 2 ft at 3 seconds and e 2 ft at 6 seconds. rain.
.mon...n winds 15 to 20 kt with gusts up to 30 kt. seas 3 to
4 ft. wave detail: n 4 ft at 5 seconds. a chance of rain in the
morning, then a chance of snow showers in the afternoon. 
.mon night...n 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: n
4 ft at 6 seconds. a chance of snow showers.
.tue...n winds 10 to 15 kt with gusts up to 20 kt. seas 3 to
5 ft. 
.tue night 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 211704
cwfbox
expires:202603220600;;066015

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 pm edt sat mar 21 2026

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


anz232-220600-
nantucket sound-
104 pm edt sat mar 21 2026

.this afternoon...n winds 10 to 15 kt with gusts up to 25 kt.
seas 2 to 3 ft. wave detail: nw 2 ft at 5 seconds and e 1 foot at
8 seconds. 
.tonight...ne winds 5 to 10 kt with gusts up to 20 kt, becoming
se after midnight. seas 2 to 3 ft. wave detail: w 2 ft at
6 seconds and ne 1 foot at 8 seconds. 
.sun...s winds 15 to 20 kt with gusts up to 25 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 morning, then rain in the
afternoon. 
.sun night...w winds 10 to 15 kt, becoming n after midnight.
gusts up to 25 kt. seas 2 to 3 ft. wave detail: sw 3 ft at
5 seconds and e 1 foot at 8 seconds. rain.
.mon...n winds 15 to 20 kt with gusts up to 25 kt. seas 3 to
4 ft. wave detail: ne 3 ft at 5 seconds and sw 2 ft at 7 seconds.
a chance of rain in the morning, then a chance of showers in the
afternoon. 
.mon night...n 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: n
3 ft at 5 seconds. a chance of snow showers in the evening. 
.tue through wed night...w 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 211704
cwfbox
expires:202603220600;;066016

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 pm edt sat mar 21 2026

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


anz233-220600-
vineyard sound-
104 pm edt sat mar 21 2026

.this afternoon...n winds around 10 kt with gusts up to 20 kt.
seas 2 to 4 ft. wave detail: sw 3 ft at 7 seconds and se 2 ft at
8 seconds. 
.tonight...e winds around 5 kt. seas 2 to 3 ft. wave detail: sw
2 ft at 7 seconds and se 2 ft at 8 seconds. 
.sun...s winds 10 to 15 kt with gusts up to 25 kt. seas 2 to
3 ft. wave detail: sw 3 ft at 5 seconds and se 1 foot at
8 seconds. a chance of rain in the morning, then rain in the
afternoon. 
.sun night...w winds around 10 kt, becoming n with gusts up to
25 kt after midnight. seas 2 to 3 ft. wave detail: s 3 ft at
7 seconds. rain.
.mon...n winds 15 to 20 kt with gusts up to 25 kt. seas 3 to
4 ft. wave detail: ne 3 ft at 4 seconds and sw 2 ft at 7 seconds.
a chance of rain in the morning, then a chance of showers in the
afternoon. 
.mon night...n winds 10 to 15 kt with gusts up to 20 kt. seas
2 to 3 ft. wave detail: ne 2 ft at 5 seconds and nw 2 ft at
6 seconds. a chance of snow showers in the evening. 
.tue through wed night...nw 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 211704
cwfbox
expires:202603220600;;066017

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 pm edt sat mar 21 2026

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


anz234-220600-
buzzards bay-
104 pm edt sat mar 21 2026

.this afternoon...n winds 5 to 10 kt with gusts up to 20 kt. seas
2 to 3 ft. wave detail: w 3 ft at 8 seconds and se 2 ft at
8 seconds. 
.tonight...e winds around 5 kt. seas around 2 ft. wave detail: sw
2 ft at 7 seconds and e 1 foot at 7 seconds. 
.sun...s winds 10 to 15 kt with gusts up to 25 kt. seas 2 to
3 ft. wave detail: sw 3 ft at 4 seconds and se 1 foot at
8 seconds. a chance of rain in the morning, then rain in the
afternoon. 
.sun night...w winds around 10 kt, becoming n with gusts up to
25 kt after midnight. seas 2 to 3 ft. wave detail: sw 2 ft at
6 seconds and se 2 ft at 8 seconds. rain.
.mon...n winds 15 to 20 kt with gusts up to 25 kt. seas 3 to
4 ft. wave detail: ne 2 ft at 3 seconds and sw 2 ft at 7 seconds.
a chance of rain in the morning. 
.mon night...n winds 10 to 15 kt. gusts up to 20 kt in the
evening. seas 2 to 3 ft. wave detail: n 2 ft at 5 seconds. a
chance of snow showers in the evening. 
.tue...nw winds 10 to 15 kt. seas around 2 ft. 
.tue night through wed night...w 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 211704
cwfbox
expires:202603220600;;066018

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 pm edt sat mar 21 2026

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


anz235-220600-
rhode island sound-
104 pm edt sat mar 21 2026

.this afternoon...n winds 5 to 10 kt. seas 3 to 5 ft. wave
detail: s 5 ft at 8 seconds and se 5 ft at 8 seconds. 
.tonight...se winds 5 to 10 kt. seas 2 to 4 ft. wave detail: s
4 ft at 7 seconds and se 3 ft at 8 seconds. 
.sun...se winds 10 to 15 kt, becoming s 15 to 20 kt in the
afternoon. gusts up to 25 kt. seas 2 to 4 ft. wave detail: s 4 ft
at 7 seconds. a chance of rain in the morning, then rain likely
in the afternoon. 
.sun night...w winds around 10 kt, becoming n with gusts up to
30 kt after midnight. seas 3 to 4 ft. wave detail: s 4 ft at
7 seconds. rain.
.mon...n winds 15 to 20 kt with gusts up to 30 kt. seas 3 to
5 ft. wave detail: ne 5 ft at 7 seconds and sw 3 ft at 7 seconds.
a chance of rain in the morning, then a chance of showers in the
afternoon. 
.mon night...n winds 10 to 15 kt with gusts up to 25 kt. seas
2 to 4 ft. wave detail: n 4 ft at 6 seconds. 
.tue through wed night...w 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 211704
cwfbox
expires:202603220600;;066021

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 pm edt sat mar 21 2026

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


anz236-220600-
narragansett bay-
104 pm edt sat mar 21 2026

.this afternoon...n winds around 10 kt with gusts up to 20 kt.
waves 2 to 3 ft. 
.tonight...ne winds around 5 kt, becoming se after midnight.
waves 2 to 3 ft. 
.sun...s winds 10 to 15 kt with gusts up to 25 kt. waves 2 to
3 ft. a chance of rain in the morning, then rain in the
afternoon. 
.sun night...w winds 5 to 10 kt, becoming n 10 to 15 kt with
gusts up to 25 kt after midnight. waves 2 to 3 ft. rain.
.mon...n winds 10 to 15 kt with gusts up to 25 kt. waves around
3 ft. a chance of rain in the morning. 
.mon night...n winds 10 to 15 kt. gusts up to 20 kt in the
evening. waves 2 to 3 ft. a chance of snow showers in the
evening. 
.tue through wed night...w 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 211704
cwfbox
expires:202603220600;;066009

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 pm edt sat mar 21 2026

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


anz250-220600-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
104 pm edt sat mar 21 2026

...small craft advisory in effect until 8 pm edt this evening...

.this afternoon...n winds 10 to 15 kt with gusts up to 25 kt.
seas 3 to 4 ft. wave detail: se 4 ft at 8 seconds and nw 2 ft at
4 seconds. 
.tonight...n winds 5 to 10 kt with gusts up to 20 kt, becoming ne
after midnight. seas 2 to 4 ft. wave detail: e 3 ft at 8 seconds
and nw 2 ft at 4 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: s 4 ft
at 5 seconds and se 3 ft at 8 seconds. a chance of rain in the
morning, then rain in the afternoon. 
.sun night...nw winds 10 to 15 kt, becoming n 15 to 20 kt after
midnight. gusts up to 30 kt. seas 3 to 5 ft. wave detail: e 5 ft
at 8 seconds and sw 3 ft at 4 seconds. rain.
.mon...n winds around 20 kt with gusts up to 30 kt. seas 5 to
7 ft. wave detail: n 7 ft at 6 seconds. a chance of snow showers.
a chance of rain in the morning. 
.mon night...n winds 15 to 20 kt with gusts up to 25 kt. seas
6 to 7 ft. wave detail: ne 7 ft at 8 seconds. a chance of snow
showers in the evening. 
.tue...n winds 10 to 15 kt with gusts up to 20 kt. seas 5 to
7 ft. 
.tue night and wed...sw winds 20 to 25 kt. seas 3 to 5 ft. 
.wed night...nw winds 20 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 211704
cwfbox
expires:202603220600;;066012

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 pm edt sat mar 21 2026

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


anz254-220600-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
104 pm edt sat mar 21 2026

...small craft advisory in effect until 8 pm edt this evening...

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

$$

fzus51 kbox 211704
cwfbox
expires:202603220600;;066013

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 pm edt sat mar 21 2026

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


anz255-220600-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
104 pm edt sat mar 21 2026

...small craft advisory in effect until 8 pm edt this evening...

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

$$