fzus51 kbox 210604
cwfbox
expires:202512211900;;954896

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 am est sun dec 21 2025

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


anz235-211900-
rhode island sound-
104 am est sun dec 21 2025

...gale warning in effect through monday morning...

.rest of tonight...sw winds 25 to 30 kt with gusts up to 40 kt.
seas 6 to 9 ft. wave detail: sw 9 ft at 7 seconds and se 3 ft at
10 seconds. 
.sun...sw winds 25 to 30 kt with gusts up to 40 kt, becoming w
20 to 25 kt with gusts up to 30 kt in the afternoon. seas 6 to
9 ft, subsiding to 5 to 7 ft in the afternoon. wave detail: sw
9 ft at 8 seconds and s 5 ft at 9 seconds, becoming w 7 ft at
7 seconds and se 3 ft at 10 seconds. 
.sun night...nw winds 20 to 25 kt with gusts up to 30 kt. seas
4 to 6 ft. wave detail: w 6 ft at 6 seconds and se 2 ft at
10 seconds. 
.mon...nw winds 15 to 20 kt with gusts up to 30 kt. seas 3 to
5 ft. wave detail: nw 5 ft at 5 seconds and se 1 foot at
10 seconds. 
.mon night...w winds 10 to 15 kt. gusts up to 20 kt in the
evening. seas 2 to 3 ft. wave detail: w 3 ft at 4 seconds and se
1 foot at 9 seconds. a chance of snow after midnight. 
.tue...sw winds 10 to 15 kt, becoming s 15 to 20 kt in the
afternoon. seas 2 to 3 ft, building to 4 to 6 ft in the
afternoon. wave detail: sw 3 ft at 4 seconds and se 1 foot at
10 seconds, becoming sw 6 ft at 6 seconds and se 1 foot at
10 seconds. rain. a chance of snow in the morning with vsby 1 to
3 nm. 
.tue night...w winds 15 to 20 kt, becoming nw 20 to 25 kt with
gusts up to 30 kt after midnight. seas 5 to 7 ft. rain likely in
the evening. 
.wed...nw winds 20 to 25 kt with gusts up to 30 kt. seas 4 to
6 ft. 
.wed night and thu...nw winds 10 to 15 kt, becoming w. gusts up
to 20 kt. seas 2 to 3 ft. 
.thu night...w winds 10 to 15 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 210604
cwfbox
expires:202512211900;;954899

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 am est sun dec 21 2025

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


anz236-211900-
narragansett bay-
104 am est sun dec 21 2025

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

.rest of tonight...sw winds 20 to 25 kt with gusts up to 35 kt.
waves 4 to 6 ft. 
.sun...sw winds 20 to 25 kt, becoming nw 15 to 20 kt in the
afternoon. gusts up to 35 kt. waves 4 to 6 ft, subsiding to 3 ft
in the afternoon. 
.sun night...nw winds 15 to 20 kt with gusts up to 30 kt. waves
2 to 3 ft. 
.mon...nw winds 10 to 15 kt. gusts up to 30 kt, decreasing to
20 kt in the afternoon. waves 2 to 3 ft. 
.mon night...w winds 5 to 10 kt. gusts up to 20 kt in the
evening. waves around 2 ft. a chance of snow after midnight. 
.tue...sw winds 5 to 10 kt, becoming s 10 to 15 kt in the
afternoon. waves 2 to 3 ft. rain. snow likely in the morning.
vsby 1 to 3 nm. 
.tue night...w winds 10 to 15 kt, becoming nw 15 to 20 kt after
midnight. gusts up to 25 kt. waves 2 to 3 ft. rain likely in the
evening with vsby 1 to 3 nm. 
.wed through thu...sw winds 15 to 20 kt with gusts up to 25 kt.
waves 2 to 3 ft. 
.thu night...w winds 5 to 10 kt. waves around 2 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 210604
cwfbox
expires:202512211900;;954897

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 am est sun dec 21 2025

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


anz237-211900-
block island sound-
104 am est sun dec 21 2025

...gale warning in effect through monday morning...

.rest of tonight...sw winds 20 to 25 kt with gusts up to 40 kt.
seas 5 to 8 ft. wave detail: sw 7 ft at 6 seconds and s 3 ft at
10 seconds. 
.sun...w winds 20 to 25 kt with gusts up to 35 kt. seas 5 to
8 ft. wave detail: w 7 ft at 6 seconds and s 5 ft at 9 seconds. 
.sun night...nw winds around 20 kt with gusts up to 35 kt. seas
4 to 6 ft. wave detail: w 5 ft at 6 seconds and se 3 ft at
10 seconds. 
.mon...nw winds 15 to 20 kt with gusts up to 30 kt. seas 2 to
4 ft. wave detail: nw 4 ft at 5 seconds and se 2 ft at
10 seconds. 
.mon night...w winds 10 to 15 kt. gusts up to 20 kt in the
evening. seas 2 to 3 ft. wave detail: w 2 ft at 4 seconds and se
1 foot at 10 seconds. a chance of snow after midnight. 
.tue...sw winds 10 to 15 kt. gusts up to 20 kt in the afternoon.
seas 2 to 3 ft, building to 3 to 5 ft in the afternoon. wave
detail: sw 3 ft at 4 seconds and se 1 foot at 9 seconds, becoming
sw 4 ft at 6 seconds and se 1 foot at 10 seconds. rain. a chance
of snow in the morning with vsby 1 to 3 nm. 
.tue night...w winds 15 to 20 kt, becoming nw 20 to 25 kt with
gusts up to 30 kt after midnight. seas 4 to 6 ft. rain likely in
the evening. 
.wed...nw winds 20 to 25 kt with gusts up to 30 kt. seas 3 to
5 ft. 
.wed night and thu...nw winds 10 to 15 kt, becoming w with gusts
up to 20 kt. seas 2 to 3 ft. 
.thu night...w winds around 10 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 210604
cwfbox
expires:202512211900;;954891

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 am est sun dec 21 2025

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


anz255-211900-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
104 am est sun dec 21 2025

...gale warning in effect through monday morning...

.rest of tonight...sw winds 25 to 30 kt with gusts up to 35 kt.
seas 8 to 11 ft. wave detail: sw 11 ft at 8 seconds and se 4 ft
at 9 seconds. 
.sun...sw winds 25 to 30 kt, becoming w 20 to 25 kt in the
afternoon. gusts up to 40 kt. seas 8 to 11 ft. wave detail: sw
11 ft at 8 seconds and se 2 ft at 9 seconds. 
.sun night...nw winds 25 to 30 kt with gusts up to 35 kt. seas
6 to 9 ft. wave detail: w 9 ft at 8 seconds and se 2 ft at
10 seconds. 
.mon...nw winds 20 to 25 kt. gusts up to 35 kt, decreasing to
25 kt in the afternoon. seas 5 to 8 ft, subsiding to 4 to 6 ft in
the afternoon. wave detail: nw 8 ft at 7 seconds and e 2 ft at
10 seconds, becoming w 6 ft at 7 seconds and e 2 ft at
10 seconds. 
.mon night...nw winds 15 to 20 kt with gusts up to 25 kt. seas
3 to 5 ft. wave detail: w 5 ft at 6 seconds and e 1 foot at
9 seconds. 
.tue...sw winds 10 to 15 kt, becoming s 15 to 20 kt in the
afternoon. seas 2 to 4 ft, building to 4 to 6 ft in the
afternoon. wave detail: sw 4 ft at 5 seconds and e 1 foot at
10 seconds, becoming sw 6 ft at 7 seconds and e 1 foot at
10 seconds. a chance of rain in the morning, then rain in the
afternoon. vsby 1 to 3 nm. 
.tue night...sw winds 20 to 25 kt, becoming nw 25 to 30 kt with
gusts up to 35 kt after midnight. seas 6 to 9 ft, building to
8 to 11 ft after midnight. rain likely, mainly in the evening. 
.wed...nw winds 25 to 35 kt with gusts up to 40 kt. seas 6 to
9 ft. 
.wed night...nw winds 15 to 20 kt with gusts up to 25 kt. seas
4 to 6 ft. 
.thu...w winds 10 to 15 kt with gusts up to 20 kt. seas 3 to
5 ft. 
.thu night...sw winds 10 to 15 kt. seas 4 to 6 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.

$$