fzus51 kbox 210904
cwfbox
expires:202601212200;;259394

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 am est wed jan 21 2026

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


anz231-212200-
cape cod bay-
404 am est wed jan 21 2026

.today...sw winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. wave detail: w 2 ft at 4 seconds and se 1 foot at
9 seconds. 
.tonight...sw winds 15 to 20 kt with gusts up to 25 kt. seas 2 to
4 ft. wave detail: sw 2 ft at 3 seconds and se 1 foot at
10 seconds. a chance of rain. 
.thu...sw winds 15 to 20 kt with gusts up to 25 kt. seas 2 to
4 ft. wave detail: sw 2 ft at 3 seconds and se 1 foot at
10 seconds. 
.thu night...w winds 10 to 15 kt with gusts up to 20 kt. seas
2 to 3 ft. wave detail: w 2 ft at 3 seconds and se 1 foot at
10 seconds. 
.fri...w 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: w 3 ft
at 4 seconds and se 1 foot at 11 seconds. 
.fri night...w winds 20 to 25 kt, becoming nw 25 to 30 kt after
midnight. seas 3 to 5 ft. wave detail: nw 5 ft at 6 seconds and
se 1 foot at 11 seconds. heavy freezing spray. 
.sat...nw winds 20 to 25 kt with gusts up to 30 kt. seas 3 to
5 ft. heavy freezing spray. 
.sat night...nw winds 15 to 20 kt with gusts up to 25 kt. seas
2 to 4 ft. heavy freezing spray. a chance of snow. 
.sun...n winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. snow likely. vsby 1 nm or less. 
.sun night...ne winds 15 to 20 kt. seas 2 to 3 ft. heavy freezing
spray. snow likely. vsby 1 nm or less.  

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 210904
cwfbox
expires:202601212200;;259398

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 am est wed jan 21 2026

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


anz232-212200-
nantucket sound-
404 am est wed jan 21 2026

...small craft advisory in effect from this evening through
thursday evening...

.today...w winds 10 to 15 kt, becoming sw 15 to 20 kt this
afternoon. seas 2 to 3 ft. wave detail: sw 3 ft at 4 seconds and
se 1 foot at 9 seconds. 
.tonight...sw winds 15 to 20 kt with gusts up to 25 kt. seas 3 to
4 ft. wave detail: sw 4 ft at 4 seconds and se 1 foot at
10 seconds. a chance of rain after midnight. 
.thu...sw winds 15 to 20 kt with gusts up to 25 kt. seas 3 to
5 ft. wave detail: sw 4 ft at 5 seconds and se 1 foot at
10 seconds. 
.thu night...w winds 15 to 20 kt with gusts up to 25 kt. seas
3 to 5 ft. wave detail: w 4 ft at 5 seconds and se 1 foot at
10 seconds. 
.fri...w winds 15 to 20 kt, increasing to 20 to 25 kt in the
afternoon. gusts up to 30 kt. seas 2 to 4 ft. wave detail: w 4 ft
at 5 seconds and se 1 foot at 11 seconds. 
.fri night...nw winds 25 to 30 kt. seas 3 to 5 ft. wave detail: w
5 ft at 5 seconds and se 1 foot at 11 seconds. light freezing
spray in the evening. heavy freezing spray after midnight. 
.sat...nw winds 20 to 25 kt with gusts up to 30 kt. seas 3 to
5 ft. heavy freezing spray. 
.sat night...nw winds 15 to 20 kt. seas 2 to 3 ft. a chance of
snow. 
.sun...n winds 15 to 20 kt. seas 2 to 3 ft. snow likely. vsby
1 nm or less. 
.sun night...ne winds 15 to 20 kt. seas 2 to 3 ft. freezing
spray. snow likely. vsby 1 nm or less.  

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 210904
cwfbox
expires:202601212200;;259399

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 am est wed jan 21 2026

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


anz233-212200-
vineyard sound-
404 am est wed jan 21 2026

...small craft advisory in effect from this evening through
thursday evening...

.today...w winds 10 to 15 kt, becoming sw 15 to 20 kt this
afternoon. seas 2 to 4 ft. wave detail: sw 3 ft at 5 seconds and
s 1 foot at 8 seconds. 
.tonight...sw winds 20 to 25 kt, diminishing to 15 to 20 kt after
midnight. seas 4 to 6 ft. wave detail: sw 5 ft at 6 seconds and
se 1 foot at 10 seconds. a chance of rain. 
.thu...sw winds 20 to 25 kt with gusts up to 30 kt. seas 4 to
6 ft. wave detail: sw 5 ft at 7 seconds and s 2 ft at 10 seconds.
.thu night...w winds 15 to 20 kt with gusts up to 25 kt. seas
3 to 5 ft. wave detail: sw 5 ft at 7 seconds and se 1 foot at
11 seconds. 
.fri...w winds 15 to 20 kt, increasing to 20 to 25 kt in the
afternoon. gusts up to 30 kt. seas 2 to 4 ft. wave detail: sw
4 ft at 6 seconds and se 1 foot at 11 seconds. 
.fri night...nw winds 25 to 30 kt. seas 3 to 5 ft. wave detail: w
4 ft at 6 seconds and se 1 foot at 11 seconds. heavy freezing
spray. 
.sat...nw winds 20 to 25 kt with gusts up to 30 kt. seas 2 to
4 ft. heavy freezing spray. 
.sat night...n winds 15 to 20 kt. seas 2 to 3 ft. a chance of
snow. 
.sun...n winds 15 to 20 kt. seas 2 to 3 ft. snow likely. vsby
1 nm or less. 
.sun night...ne winds 15 to 20 kt with gusts up to 25 kt. seas
2 to 4 ft. heavy freezing spray. snow likely. vsby 1 nm or less. 

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 210904
cwfbox
expires:202601212200;;259400

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 am est wed jan 21 2026

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


anz234-212200-
buzzards bay-
404 am est wed jan 21 2026

.today...w winds 10 to 15 kt, becoming sw 15 to 20 kt this
afternoon. seas 2 to 3 ft. wave detail: sw 3 ft at 4 seconds and
s 1 foot at 9 seconds. 
.tonight...sw winds 20 to 25 kt, diminishing to 15 to 20 kt after
midnight. seas 3 to 5 ft. wave detail: sw 4 ft at 5 seconds and
se 1 foot at 10 seconds. a chance of rain. 
.thu...sw winds 20 to 25 kt. seas 3 to 4 ft. wave detail: sw 4 ft
at 7 seconds and s 2 ft at 10 seconds. 
.thu night...w 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:
sw 4 ft at 7 seconds and se 1 foot at 10 seconds. 
.fri...w winds 15 to 20 kt, increasing to 20 to 25 kt in the
afternoon. seas 2 to 4 ft. wave detail: sw 4 ft at 5 seconds and
se 1 foot at 10 seconds. 
.fri night...nw winds 20 to 25 kt with gusts up to 30 kt. seas
around 3 ft. wave detail: w 3 ft at 5 seconds and se 1 foot at
11 seconds. heavy freezing spray. 
.sat...nw winds 20 to 25 kt with gusts up to 30 kt. seas 2 to
3 ft. heavy freezing spray. 
.sat night...nw winds 10 to 15 kt with gusts up to 20 kt. seas
around 2 ft. a chance of snow. 
.sun...n winds 15 to 20 kt. seas around 2 ft. snow likely. vsby
1 nm or less. 
.sun night...ne winds 15 to 20 kt. seas 2 to 3 ft. heavy freezing
spray. snow likely. vsby 1 nm or less.  

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 210904
cwfbox
expires:202601212200;;259401

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 am est wed jan 21 2026

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


anz235-212200-
rhode island sound-
404 am est wed jan 21 2026

...small craft advisory in effect from this evening through
thursday evening...

.today...w winds 10 to 15 kt, becoming sw 15 to 20 kt with gusts
up to 25 kt this afternoon. seas 2 to 4 ft. wave detail: sw 4 ft
at 5 seconds and se 2 ft at 8 seconds. 
.tonight...sw winds 20 to 25 kt. seas 5 to 7 ft. wave detail: sw
7 ft at 7 seconds and se 2 ft at 10 seconds. a chance of rain. 
.thu...sw winds 20 to 25 kt with gusts up to 30 kt. seas 4 to
6 ft. wave detail: sw 6 ft at 7 seconds and s 6 ft at 11 seconds.
.thu night...w winds 20 to 25 kt, diminishing to 15 to 20 kt
after midnight. seas 4 to 6 ft. wave detail: sw 6 ft at 7 seconds
and se 2 ft at 11 seconds. 
.fri...w 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: w 5 ft
at 6 seconds and se 1 foot at 10 seconds. 
.fri night...nw winds 20 to 25 kt with gusts up to 30 kt. seas
3 to 5 ft. wave detail: w 5 ft at 6 seconds and se 1 foot at
11 seconds. heavy freezing spray. 
.sat...nw winds 20 to 25 kt with gusts up to 30 kt. seas 3 to
5 ft. heavy freezing spray. 
.sat night...n winds around 15 kt with gusts up to 20 kt. seas
2 to 3 ft. a chance of snow. 
.sun and sun night...ne winds 15 to 20 kt, increasing to 20 to
25 kt. seas 2 to 4 ft. heavy freezing spray. snow likely. vsby
1 nm or less.  

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 210904
cwfbox
expires:202601212200;;259404

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 am est wed jan 21 2026

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


anz236-212200-
narragansett bay-
404 am est wed jan 21 2026

.today...w winds 5 to 10 kt, becoming sw 10 to 15 kt with gusts
up to 20 kt this afternoon. waves 2 to 3 ft. 
.tonight...sw winds 15 to 20 kt with gusts up to 25 kt. waves
2 to 4 ft. a chance of rain. a chance of snow in the evening. 
.thu...sw winds 15 to 20 kt with gusts up to 25 kt. waves 2 to
4 ft. 
.thu night...w winds 10 to 15 kt. gusts up to 20 kt in the
evening. waves 2 to 4 ft. 
.fri...w winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. gusts up to 25 kt. waves 2 to 3 ft. 
.fri night...nw winds 15 to 20 kt with gusts up to 25 kt. waves
2 to 3 ft. heavy freezing spray. 
.sat...nw winds 15 to 20 kt with gusts up to 25 kt. waves 2 to
3 ft. 
.sat night...nw winds 10 to 15 kt. waves around 2 ft. a chance of
snow. 
.sun and sun night...n winds 10 to 15 kt with gusts up to 20 kt.
waves 2 to 3 ft. snow likely. vsby 1 nm or less.  

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 210904
cwfbox
expires:202601212200;;259392

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 am est wed jan 21 2026

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


anz250-212200-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
404 am est wed jan 21 2026

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

.today...sw winds 15 to 20 kt with gusts up to 25 kt. seas 2 to
4 ft. wave detail: w 4 ft at 5 seconds and se 2 ft at 9 seconds. 
.tonight...sw winds 20 to 25 kt with gusts up to 30 kt. seas 3 to
5 ft. wave detail: sw 5 ft at 5 seconds and se 2 ft at
10 seconds. a chance of rain. a chance of snow in the evening
with vsby 1 to 3 nm. 
.thu...sw winds 15 to 20 kt with gusts up to 25 kt. seas 3 to
5 ft. wave detail: sw 5 ft at 5 seconds and se 2 ft at
11 seconds. 
.thu night...w winds 15 to 20 kt with gusts up to 25 kt. seas
3 to 5 ft. wave detail: w 4 ft at 5 seconds and se 2 ft at
11 seconds. 
.fri...w 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: w 5 ft
at 5 seconds and se 2 ft at 11 seconds. 
.fri night...nw winds 25 to 30 kt with gusts up to 35 kt. seas
5 to 8 ft. wave detail: w 7 ft at 5 seconds and se 1 foot at
11 seconds. heavy freezing spray. 
.sat...nw winds 25 to 30 kt. seas 5 to 7 ft. heavy freezing
spray. 
.sat night...nw winds 15 to 20 kt with gusts up to 25 kt. seas
3 to 5 ft. heavy freezing spray. 
.sun...n winds around 15 kt with gusts up to 20 kt. seas around
3 ft. a chance of snow. vsby 1 nm or less. 
.sun night...ne winds 15 to 20 kt. seas 3 to 4 ft. heavy freezing
spray. a chance of snow. vsby 1 nm or less.  

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 210904
cwfbox
expires:202601212200;;259395

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 am est wed jan 21 2026

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


anz254-212200-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
404 am est wed jan 21 2026

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

.today...w winds 10 to 15 kt, becoming sw 15 to 20 kt this
afternoon. gusts up to 25 kt. seas 2 to 4 ft. wave detail: w 3 ft
at 6 seconds and se 2 ft at 9 seconds. 
.tonight...sw winds 15 to 20 kt with gusts up to 25 kt. seas 3 to
5 ft. wave detail: s 5 ft at 5 seconds and se 2 ft at 10 seconds.
a chance of rain after midnight. 
.thu...sw winds 15 to 20 kt with gusts up to 25 kt. seas 4 to
6 ft. wave detail: sw 5 ft at 7 seconds and se 3 ft at
10 seconds. 
.thu night...w winds 15 to 20 kt with gusts up to 25 kt. seas
4 to 6 ft. wave detail: w 5 ft at 5 seconds and se 3 ft at
10 seconds. 
.fri...w 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: w 5 ft
at 5 seconds and se 2 ft at 10 seconds. 
.fri night...nw winds 25 to 30 kt. seas 5 to 8 ft. wave detail:
nw 7 ft at 6 seconds and se 2 ft at 11 seconds. heavy freezing
spray. 
.sat...nw winds 25 to 30 kt. seas 5 to 7 ft. heavy freezing
spray. 
.sat night...nw winds 15 to 20 kt with gusts up to 25 kt. seas
4 to 6 ft. heavy freezing spray. a chance of snow. 
.sun...n winds 15 to 20 kt. seas 3 to 4 ft. snow likely. vsby
1 nm or less. 
.sun night...ne winds 15 to 20 kt. seas 3 to 5 ft. light freezing
spray. snow likely. vsby 1 nm or less.  

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 210904
cwfbox
expires:202601212200;;259396

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 am est wed jan 21 2026

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


anz255-212200-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
404 am est wed jan 21 2026

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

.today...w winds 10 to 15 kt, becoming sw 15 to 20 kt this
afternoon. seas 3 to 5 ft. wave detail: sw 4 ft at 5 seconds and
se 2 ft at 8 seconds. 
.tonight...sw winds 20 to 25 kt with gusts up to 30 kt. seas 5 to
8 ft. wave detail: sw 7 ft at 6 seconds and se 2 ft at
10 seconds. 
.thu...sw winds 20 to 25 kt with gusts up to 30 kt. seas 6 to
8 ft. wave detail: sw 8 ft at 8 seconds and se 3 ft at
11 seconds. 
.thu night...w 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:
sw 8 ft at 7 seconds and se 1 foot at 11 seconds. 
.fri...w winds 15 to 20 kt, increasing to 25 to 30 kt in the
afternoon. seas 4 to 5 ft, building to 5 to 7 ft in the
afternoon. wave detail: w 5 ft at 7 seconds and se 1 foot at
11 seconds, becoming sw 7 ft at 7 seconds and se 1 foot at
11 seconds. 
.fri night...nw winds 25 to 30 kt with gusts up to 35 kt. seas
6 to 9 ft. wave detail: w 8 ft at 7 seconds and se 1 foot at
11 seconds. heavy freezing spray after midnight. 
.sat...nw winds 25 to 30 kt. seas 5 to 7 ft. heavy freezing
spray. 
.sat night...n winds 15 to 20 kt. seas 3 to 5 ft. heavy freezing
spray. a chance of snow. 
.sun and sun night...ne winds 20 to 25 kt. seas 3 to 5 ft. light
freezing spray. snow likely. vsby 1 nm or less.  

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.

$$