fzus51 kbox 181805
cwfbox
expires:202601190700;;112155

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 pm est sun jan 18 2026

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


anz231-190700-
cape cod bay-
104 pm est sun jan 18 2026

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

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 181805
cwfbox
expires:202601190700;;112159

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 pm est sun jan 18 2026

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


anz232-190700-
nantucket sound-
104 pm est sun jan 18 2026

.this afternoon...ne winds 5 to 10 kt. seas 2 to 3 ft. wave
detail: se 2 ft at 9 seconds and e 1 foot at 6 seconds. rain and
snow. vsby 1 nm or less. 
.tonight...ne winds 10 to 15 kt, becoming nw after midnight. seas
2 to 3 ft. wave detail: nw 2 ft at 5 seconds and e 2 ft at
8 seconds. snow. rain in the evening. vsby 1 nm or less. 
.mon...w winds 15 to 20 kt, becoming sw 25 to 30 kt in the
afternoon. seas 2 to 4 ft, building to 4 to 6 ft in the
afternoon. wave detail: w 2 ft at 4 seconds and se 2 ft at
8 seconds, becoming sw 5 ft at 5 seconds and se 2 ft at
9 seconds. snow likely in the morning. 
.mon night...w winds 25 to 30 kt, diminishing to 15 to 20 kt
after midnight. seas 4 to 6 ft. wave detail: w 5 ft at 5 seconds
and se 2 ft at 9 seconds. light freezing spray after midnight. 
.tue...w winds 15 to 20 kt with gusts up to 30 kt. seas 3 to
5 ft. wave detail: w 3 ft at 4 seconds and s 2 ft at 9 seconds.
light freezing spray. 
.tue night...w winds 15 to 20 kt with gusts up to 25 kt. seas
2 to 4 ft. wave detail: w 3 ft at 4 seconds and se 1 foot at
9 seconds. light freezing spray. 
.wed...sw winds 15 to 20 kt with gusts up to 25 kt. seas 2 to
3 ft. 
.wed night and thu...sw winds 15 to 20 kt with gusts up to 25 kt.
seas 3 to 5 ft. a chance of showers.
.thu night...w winds 20 to 25 kt. seas 3 to 4 ft. light freezing
spray.  

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 181805
cwfbox
expires:202601190700;;112160

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 pm est sun jan 18 2026

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


anz233-190700-
vineyard sound-
104 pm est sun jan 18 2026

.this afternoon...ne winds 5 to 10 kt. seas 2 to 3 ft. wave
detail: s 3 ft at 8 seconds and e 1 foot at 5 seconds. snow. vsby
1 nm or less. 
.tonight...ne winds around 10 kt, becoming nw after midnight.
seas 2 to 3 ft. wave detail: se 3 ft at 8 seconds and nw 2 ft at
5 seconds. snow. vsby 1 nm or less. 
.mon...w winds 15 to 20 kt, becoming sw 25 to 30 kt in the
afternoon. seas 2 to 4 ft, building to 4 to 6 ft in the
afternoon. wave detail: w 3 ft at 4 seconds and s 3 ft at
8 seconds, becoming sw 6 ft at 6 seconds and s 4 ft at 9 seconds.
snow likely in the morning. 
.mon night...w winds 25 to 30 kt, diminishing to 15 to 20 kt
after midnight. seas 5 to 7 ft. wave detail: sw 6 ft at
8 seconds. light freezing spray after midnight. 
.tue...w winds 15 to 20 kt with gusts up to 30 kt. seas 3 to
5 ft. wave detail: sw 4 ft at 8 seconds. light freezing spray. 
.tue night...w winds 15 to 20 kt with gusts up to 30 kt. seas
2 to 4 ft. wave detail: sw 4 ft at 7 seconds and se 1 foot at
9 seconds. light freezing spray. 
.wed...sw winds 15 to 20 kt with gusts up to 25 kt. seas 2 to
4 ft. 
.wed night and thu...sw winds 20 to 25 kt, diminishing to 15 to
20 kt. gusts up to 30 kt. seas 4 to 6 ft. a chance of showers. 
.thu night...w winds 20 to 25 kt with gusts up to 30 kt. seas
3 to 4 ft. light freezing spray.  

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 181805
cwfbox
expires:202601190700;;112161

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 pm est sun jan 18 2026

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


anz234-190700-
buzzards bay-
104 pm est sun jan 18 2026

.this afternoon...ne winds 5 to 10 kt. seas 2 to 3 ft. wave
detail: se 2 ft at 7 seconds. snow. vsby 1 nm or less. 
.tonight...ne winds around 10 kt, becoming nw after midnight.
seas around 2 ft. wave detail: se 2 ft at 7 seconds. snow. vsby
1 nm or less. 
.mon...w winds 15 to 20 kt, becoming sw 20 to 25 kt with gusts up
to 30 kt in the afternoon. seas 2 to 3 ft, building to 3 to 5 ft
in the afternoon. wave detail: w 2 ft at 4 seconds and s 2 ft at
8 seconds, becoming sw 5 ft at 5 seconds and s 2 ft at 9 seconds.
snow likely in the morning. 
.mon night...w winds 20 to 25 kt, diminishing to 15 to 20 kt
after midnight. gusts up to 35 kt. seas 4 to 6 ft. wave detail:
sw 5 ft at 7 seconds. light freezing spray after midnight. 
.tue and tue night...w winds 15 to 20 kt with gusts up to 30 kt.
seas 2 to 4 ft. wave detail: sw 4 ft at 9 seconds and sw 3 ft at
7 seconds. light freezing spray. 
.wed...sw winds 15 to 20 kt with gusts up to 25 kt. seas 2 to
4 ft. wave detail: sw 3 ft at 6 seconds and se 1 foot at
9 seconds. 
.wed night...sw winds 20 to 25 kt with gusts up to 30 kt. seas
3 to 5 ft. a chance of showers. 
.thu...sw winds 15 to 20 kt with gusts up to 25 kt. seas 3 to
4 ft. a chance of showers. 
.thu night...w winds 15 to 20 kt with gusts up to 25 kt. seas
around 3 ft. light freezing spray.  

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 181805
cwfbox
expires:202601190700;;112162

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 pm est sun jan 18 2026

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


anz235-190700-
rhode island sound-
104 pm est sun jan 18 2026

.this afternoon...ne winds 10 to 15 kt. seas 3 to 4 ft. wave
detail: s 4 ft at 8 seconds. rain and snow. vsby 1 nm or less. 
.tonight...ne winds 10 to 15 kt, becoming nw after midnight. seas
3 to 4 ft. wave detail: se 4 ft at 8 seconds and nw 2 ft at
4 seconds. snow. vsby 1 nm or less. 
.mon...w winds 15 to 20 kt, increasing to 25 to 30 kt in the
afternoon. seas 3 to 5 ft, building to 5 to 7 ft in the
afternoon. wave detail: s 4 ft at 8 seconds and w 3 ft at
5 seconds, becoming sw 7 ft at 7 seconds and s 6 ft at 9 seconds.
a chance of snow in the morning. 
.mon night...w winds 25 to 30 kt, diminishing to 20 to 25 kt
after midnight. seas 5 to 8 ft. wave detail: s 8 ft at 9 seconds
and w 7 ft at 7 seconds. light freezing spray after midnight. 
.tue...w winds 15 to 20 kt, increasing to 20 to 25 kt in the
afternoon. gusts up to 30 kt. seas 4 to 6 ft. wave detail: sw
6 ft at 8 seconds. light freezing spray. 
.tue night...w winds 15 to 20 kt with gusts up to 30 kt. seas
3 to 5 ft. wave detail: sw 5 ft at 7 seconds and se 1 foot at
9 seconds. light freezing spray. 
.wed...sw winds 15 to 20 kt with gusts up to 30 kt. seas 2 to
4 ft. 
.wed night and thu...sw winds 20 to 25 kt with gusts up to 30 kt.
seas 5 to 7 ft. a chance of showers.
.thu night...w winds 20 to 25 kt with gusts up to 30 kt. seas
3 to 5 ft. light freezing spray.  

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 181805
cwfbox
expires:202601190700;;112165

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 pm est sun jan 18 2026

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


anz236-190700-
narragansett bay-
104 pm est sun jan 18 2026

.this afternoon...ne winds 5 to 10 kt. waves 2 to 3 ft. snow and
rain. vsby 1 nm or less. 
.tonight...ne winds 5 to 10 kt, becoming nw after midnight. waves
2 to 3 ft. snow. vsby 1 nm or less.
.mon...w winds 10 to 15 kt, becoming sw 15 to 20 kt in the
afternoon. gusts up to 25 kt. waves 2 to 3 ft, building to 3 to
5 ft in the afternoon. a chance of snow in the morning. 
.mon night...w winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. gusts up to 30 kt. waves 3 to 5 ft.
.tue...w winds 10 to 15 kt with gusts up to 25 kt. waves around
3 ft. light freezing spray in the afternoon. 
.tue night...w winds 10 to 15 kt, diminishing to 5 to 10 kt after
midnight. gusts up to 25 kt. waves 2 to 3 ft.
.wed and wed night...sw winds 15 to 20 kt with gusts up to 25 kt.
waves 2 to 4 ft. 
.thu...sw winds 10 to 15 kt with gusts up to 25 kt. waves 2 to
4 ft. a chance of snow showers. 
.thu night...w winds 10 to 15 kt with gusts up to 25 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 181805
cwfbox
expires:202601190700;;112153

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 pm est sun jan 18 2026

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


anz250-190700-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
104 pm est sun jan 18 2026

.this afternoon...n winds 5 to 10 kt. seas 2 to 3 ft. wave
detail: se 3 ft at 9 seconds and w 1 foot at 3 seconds. snow and
rain. vsby 1 nm or less. 
.tonight...n winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
4 ft. wave detail: n 4 ft at 6 seconds and w 1 foot at 3 seconds.
snow. rain in the evening. vsby 1 nm or less. 
.mon...w winds 10 to 15 kt with gusts up to 20 kt, becoming sw
20 to 25 kt with gusts up to 30 kt in the afternoon. seas 3 to
4 ft, building to 4 to 6 ft in the afternoon. wave detail: e 4 ft
at 7 seconds and nw 2 ft at 4 seconds, becoming sw 4 ft at
4 seconds and se 4 ft at 10 seconds. snow in the morning with
vsby 1 to 3 nm. 
.mon night...w winds 25 to 30 kt, diminishing to 20 to 25 kt
after midnight. seas 5 to 7 ft. wave detail: w 6 ft at 5 seconds
and se 4 ft at 10 seconds. light freezing spray after midnight. 
.tue...w winds 20 to 25 kt with gusts up to 30 kt. seas 5 to
7 ft, subsiding to 3 to 5 ft in the afternoon. wave detail: w
5 ft at 5 seconds and se 2 ft at 10 seconds. light freezing
spray. 
.tue night...w winds 20 to 25 kt with 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. light freezing spray. 
.wed...sw winds 15 to 20 kt with gusts up to 30 kt. seas 3 to
4 ft. light freezing spray. 
.wed night...sw winds 20 to 25 kt with gusts up to 30 kt. seas
3 to 5 ft. a chance of showers. 
.thu...sw winds 20 to 25 kt with gusts up to 30 kt. seas 3 to
5 ft. a chance of showers. 
.thu night...w winds 20 to 25 kt with gusts up to 30 kt. seas
4 to 6 ft. light freezing spray.  

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 181805
cwfbox
expires:202601190700;;112156

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 pm est sun jan 18 2026

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


anz254-190700-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
104 pm est sun jan 18 2026

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

.this afternoon...ne winds 10 to 15 kt. seas 3 to 4 ft. wave
detail: s 4 ft at 9 seconds and nw 1 foot at 3 seconds. rain.
vsby 1 nm or less. 
.tonight...ne winds 10 to 15 kt with gusts up to 20 kt, becoming
n after midnight. seas 3 to 4 ft. wave detail: se 4 ft at
8 seconds and n 2 ft at 4 seconds. rain. snow likely after
midnight. vsby 1 nm or less. 
.mon...w winds 15 to 20 kt, becoming sw 20 to 25 kt with gusts up
to 30 kt in the afternoon. seas 5 to 7 ft. wave detail: sw 6 ft
at 5 seconds and se 5 ft at 8 seconds. snow likely in the morning
with vsby 1 to 3 nm. 
.mon night...w winds 25 to 30 kt, diminishing to 20 to 25 kt
after midnight. seas 6 to 9 ft. wave detail: w 6 ft at 5 seconds
and s 6 ft at 10 seconds. 
.tue...w winds 15 to 20 kt, increasing to 20 to 25 kt in the
afternoon. gusts up to 30 kt. seas 5 to 7 ft. wave detail: w 5 ft
at 5 seconds and s 4 ft at 9 seconds. light freezing spray. 
.tue night...w winds 20 to 25 kt, diminishing to 15 to 20 kt
after midnight. gusts up to 30 kt. seas 3 to 5 ft. wave detail:
nw 5 ft at 5 seconds and se 2 ft at 9 seconds. light freezing
spray. 
.wed...sw winds 15 to 20 kt with gusts up to 25 kt. seas 2 to
4 ft. 
.wed night...sw winds 15 to 20 kt with gusts up to 30 kt. seas
4 to 6 ft. a chance of showers. 
.thu...sw winds 15 to 20 kt with gusts up to 25 kt. seas 3 to
5 ft. a chance of showers. 
.thu night...w winds 20 to 25 kt with gusts up to 30 kt. seas
4 to 6 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 181805
cwfbox
expires:202601190700;;112157

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 pm est sun jan 18 2026

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


anz255-190700-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
104 pm est sun jan 18 2026

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

.this afternoon...ne winds 10 to 15 kt. seas 3 to 5 ft. wave
detail: s 5 ft at 8 seconds. rain. vsby 1 nm or less. 
.tonight...ne winds around 15 kt, becoming nw after midnight.
gusts up to 20 kt. seas 3 to 4 ft. wave detail: s 4 ft at
8 seconds and nw 3 ft at 4 seconds. rain. snow likely after
midnight. vsby 1 nm or less. 
.mon...w winds 15 to 20 kt, increasing to 25 to 30 kt in the
afternoon. seas 4 to 6 ft, building to 7 to 10 ft in the
afternoon. wave detail: s 6 ft at 9 seconds and w 4 ft at
5 seconds, becoming sw 10 ft at 8 seconds and s 5 ft at
9 seconds. a chance of snow in the morning. 
.mon night...w winds 25 to 30 kt, diminishing to 20 to 25 kt
after midnight. gusts up to 40 kt. seas 9 to 12 ft. wave detail:
sw 10 ft at 8 seconds and s 9 ft at 9 seconds. 
.tue...w winds 15 to 20 kt, increasing to 20 to 25 kt in the
afternoon. gusts up to 30 kt. seas 6 to 9 ft, subsiding to 5 to
7 ft in the afternoon. wave detail: sw 7 ft at 8 seconds and s
7 ft at 9 seconds, becoming sw 7 ft at 8 seconds and se 2 ft at
9 seconds. light freezing spray. 
.tue night...w winds 20 to 25 kt, becoming nw 15 to 20 kt after
midnight. gusts up to 30 kt. seas 5 to 7 ft. wave detail: sw 7 ft
at 7 seconds and se 1 foot at 9 seconds. light freezing spray. 
.wed...sw winds 15 to 20 kt with gusts up to 25 kt. seas 3 to
5 ft. 
.wed night and thu...sw winds 20 to 25 kt with gusts up to 30 kt.
seas 5 to 8 ft. a chance of showers.
.thu night...w winds 25 to 30 kt. seas 5 to 7 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.

$$