fzus51 kbox 190307
cwfbox
expires:202512191600;;834532

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1007 pm est thu dec 18 2025

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


anz231-191600-
cape cod bay-
1007 pm est thu dec 18 2025

...storm warning in effect from 6 am est friday through friday
afternoon...

.overnight...s winds 15 to 20 kt, increasing to 20 to 25 kt.
gusts up to 30 kt. seas around 3 ft. wave detail: se 3 ft at
4 seconds and w 1 foot at 3 seconds. a slight chance of rain. a
chance of rain. 
.fri...s winds 25 to 35 kt with gusts up to 45 kt, becoming 30 to
35 kt with gusts up to 55 kt in the afternoon. seas 4 to 6 ft.
wave detail: s 6 ft at 5 seconds and s 6 ft at 9 seconds. rain.
vsby 1 nm or less. 
.fri night...w winds 25 to 30 kt with gusts up to 40 kt. seas
4 to 6 ft. wave detail: sw 5 ft at 6 seconds and s 5 ft at
10 seconds. a chance of rain in the evening. 
.sat...w winds 20 to 25 kt with gusts up to 30 kt, diminishing to
10 to 15 kt with gusts up to 20 kt in the afternoon. seas 3 to
5 ft. wave detail: w 5 ft at 5 seconds and sw 4 ft at 8 seconds. 
.sat night...sw winds 15 to 20 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
11 seconds. 
.sun and sun night...nw winds 25 to 30 kt. seas 3 to 5 ft. wave
detail: nw 5 ft at 6 seconds and s 4 ft at 6 seconds. 
.mon...nw winds 25 to 30 kt. seas 3 to 5 ft. 
.mon night...nw winds 15 to 20 kt with gusts up to 25 kt. seas
2 to 4 ft. 
.tue...sw winds 15 to 20 kt with gusts up to 25 kt. seas 2 to
4 ft. rain likely with a chance of snow. 
.tue night...w winds 15 to 20 kt with gusts up to 25 kt. 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.

$$

fzus51 kbox 190307
cwfbox
expires:202512191600;;834536

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1007 pm est thu dec 18 2025

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


anz232-191600-
nantucket sound-
1007 pm est thu dec 18 2025

...storm warning in effect from 6 am est friday through friday
afternoon...

.overnight...s winds 20 to 25 kt with gusts up to 30 kt. seas
3 to 5 ft. wave detail: se 4 ft at 5 seconds and se 1 foot at
10 seconds. a chance of rain with vsby 1 to 3 nm. 
.fri...s winds 25 to 35 kt, becoming 30 to 35 kt in the
afternoon. gusts up to 50 kt. seas 5 to 7 ft, building to 6 to
9 ft in the afternoon. wave detail: se 7 ft at 5 seconds and se
1 foot at 10 seconds, becoming s 9 ft at 10 seconds and s 7 ft at
5 seconds. rain. vsby 1 nm or less. 
.fri night...w winds 30 to 40 kt. seas 6 to 9 ft. wave detail: sw
6 ft at 6 seconds and s 4 ft at 11 seconds. a chance of rain in
the evening. 
.sat...w winds 25 to 30 kt with gusts up to 35 kt, diminishing to
15 to 20 kt with gusts up to 25 kt in the afternoon. seas 4 to
6 ft. wave detail: w 6 ft at 5 seconds and sw 4 ft at 9 seconds. 
.sat night...sw winds 15 to 20 kt, increasing to 20 to 25 kt
after midnight. gusts up to 30 kt. seas 2 to 4 ft, building to
4 to 6 ft after midnight. wave detail: sw 3 ft at 4 seconds and
sw 3 ft at 9 seconds, becoming sw 5 ft at 5 seconds and n 1 foot
at 5 seconds. 
.sun and sun night...nw winds 25 to 30 kt. seas 4 to 6 ft. wave
detail: nw 5 ft at 5 seconds and sw 5 ft at 8 seconds. 
.mon...nw winds 25 to 30 kt. seas 4 to 6 ft. 
.mon night...nw winds 15 to 20 kt with gusts up to 25 kt. seas
2 to 4 ft. 
.tue...sw winds 20 to 25 kt. seas 2 to 3 ft. rain likely with a
chance of snow. 
.tue night...w winds 20 to 25 kt. 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.

$$

fzus51 kbox 190307
cwfbox
expires:202512191600;;834537

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1007 pm est thu dec 18 2025

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


anz233-191600-
vineyard sound-
1007 pm est thu dec 18 2025

...storm warning in effect from 6 am est friday through friday
afternoon...

.overnight...s winds 20 to 25 kt with gusts up to 30 kt. seas
3 to 4 ft, building to 4 to 6 ft. wave detail: s 4 ft at
5 seconds and se 1 foot at 10 seconds, becoming s 5 ft at
5 seconds and se 1 foot at 10 seconds. a chance of rain. 
.fri...s winds 30 to 40 kt with gusts up to 50 kt. seas 7 to
10 ft. wave detail: s 10 ft at 11 seconds and s 9 ft at
5 seconds. rain. vsby 1 nm or less. 
.fri night...w winds 30 to 40 kt, diminishing to 25 to 35 kt
after midnight. seas 7 to 10 ft. wave detail: sw 10 ft at
11 seconds and w 7 ft at 7 seconds. 
.sat...w winds 25 to 30 kt with gusts up to 35 kt, diminishing to
15 to 20 kt in the afternoon. seas 5 to 7 ft, subsiding to 3 to
5 ft in the afternoon. wave detail: sw 7 ft at 11 seconds and w
6 ft at 7 seconds, becoming sw 5 ft at 10 seconds and w 2 ft at
5 seconds. 
.sat night...sw winds 20 to 25 kt, increasing to 25 to 30 kt
after midnight. seas 4 to 6 ft, building to 5 to 8 ft after
midnight. wave detail: s 5 ft at 10 seconds and sw 2 ft at
4 seconds, becoming sw 7 ft at 7 seconds and se 2 ft at
11 seconds. 
.sun...sw winds 25 to 30 kt, becoming w 20 to 25 kt in the
afternoon. seas 5 to 8 ft. wave detail: sw 7 ft at 7 seconds and
w 2 ft at 4 seconds. 
.sun night...nw winds 25 to 30 kt. seas 4 to 6 ft.
.mon...nw winds 25 to 30 kt. seas 3 to 5 ft. 
.mon night...nw winds 15 to 20 kt. seas 2 to 3 ft.
.tue...sw winds 20 to 25 kt with gusts up to 30 kt. seas 2 to
4 ft. rain likely with a chance of snow. 
.tue night...w winds 25 to 30 kt. 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.

$$

fzus51 kbox 190307
cwfbox
expires:202512191600;;834538

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1007 pm est thu dec 18 2025

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


anz234-191600-
buzzards bay-
1007 pm est thu dec 18 2025

...storm warning in effect from 6 am est friday through friday
afternoon...

.overnight...s winds 15 to 20 kt, increasing to 25 to 30 kt. seas
3 to 5 ft. wave detail: s 4 ft at 5 seconds and se 1 foot at
10 seconds. a chance of rain. 
.fri...s winds 30 to 40 kt with gusts up to 50 kt. seas 5 to
8 ft. wave detail: s 8 ft at 11 seconds and s 7 ft at 5 seconds.
rain. vsby 1 nm or less. 
.fri night...w winds 30 to 35 kt, diminishing to 25 to 30 kt
after midnight. seas 5 to 7 ft. wave detail: s 7 ft at 11 seconds
and sw 6 ft at 7 seconds. 
.sat...w winds 25 to 30 kt, diminishing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. seas 4 to 6 ft, subsiding to 2 to
4 ft in the afternoon. wave detail: sw 6 ft at 10 seconds and w
4 ft at 6 seconds, becoming sw 4 ft at 10 seconds and w 2 ft at
5 seconds. 
.sat night...sw winds 20 to 25 kt, increasing to 25 to 30 kt with
gusts up to 35 kt after midnight. seas 4 to 6 ft. wave detail: sw
6 ft at 7 seconds and s 3 ft at 10 seconds. 
.sun...sw winds 25 to 30 kt, becoming w 20 to 25 kt in the
afternoon. seas 4 to 6 ft. wave detail: sw 6 ft at 7 seconds and
w 3 ft at 4 seconds. 
.sun night...nw winds 20 to 25 kt with gusts up to 30 kt. seas
3 to 5 ft. 
.mon...nw winds 20 to 25 kt with gusts up to 30 kt. seas 3 to
4 ft. a chance of light freezing spray. 
.mon night...nw winds 15 to 20 kt. seas 2 to 3 ft.
.tue...sw winds 20 to 25 kt. seas 2 to 4 ft. rain likely with a
chance of snow. 
.tue night...w winds 20 to 25 kt. 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.

$$

fzus51 kbox 190307
cwfbox
expires:202512191600;;834539

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1007 pm est thu dec 18 2025

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


anz235-191600-
rhode island sound-
1007 pm est thu dec 18 2025

...gale warning in effect from 3 am est friday through saturday
morning...

.overnight...s winds 20 to 25 kt with gusts up to 30 kt. seas
4 to 5 ft, building to 5 to 7 ft. wave detail: s 5 ft at
6 seconds and se 1 foot at 10 seconds, becoming s 7 ft at
7 seconds and se 1 foot at 10 seconds. a chance of rain. 
.fri...s winds 30 to 40 kt with gusts up to 50 kt. seas 8 to
11 ft, building to 9 to 13 ft in the afternoon. wave detail: s
11 ft at 9 seconds, becoming s 13 ft at 10 seconds and w 3 ft at
5 seconds. rain. vsby 1 nm or less. 
.fri night...w winds 30 to 40 kt, diminishing to 25 to 35 kt
after midnight. seas 9 to 12 ft. wave detail: s 12 ft at
11 seconds and w 7 ft at 7 seconds. 
.sat...w winds 25 to 30 kt with gusts up to 35 kt, diminishing to
around 15 kt with gusts up to 20 kt in the afternoon. seas 6 to
9 ft, subsiding to 4 to 6 ft in the afternoon. wave detail: s
9 ft at 11 seconds and w 5 ft at 6 seconds, becoming sw 6 ft at
10 seconds and w 2 ft at 5 seconds. 
.sat night...sw winds 20 to 25 kt, increasing to 25 to 30 kt
after midnight. seas 4 to 6 ft, building to 6 to 9 ft after
midnight. wave detail: s 6 ft at 10 seconds and sw 3 ft at
4 seconds, becoming sw 9 ft at 6 seconds and se 3 ft at
10 seconds. 
.sun...w winds 25 to 30 kt. seas 6 to 9 ft. wave detail: sw 9 ft
at 8 seconds and w 4 ft at 5 seconds. 
.sun night...nw winds 25 to 30 kt. seas 5 to 7 ft.
.mon...nw winds 25 to 30 kt. seas 4 to 6 ft. 
.mon night...nw winds 15 to 20 kt. seas 2 to 4 ft.
.tue...sw winds 25 to 30 kt. seas 3 to 5 ft. rain likely with a
chance of snow. 
.tue night...w winds 25 to 30 kt. seas 4 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 190307
cwfbox
expires:202512191600;;834542

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1007 pm est thu dec 18 2025

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


anz236-191600-
narragansett bay-
1007 pm est thu dec 18 2025

...gale warning in effect from 5 am est friday through late
friday night...

.overnight...s winds 15 to 20 kt, increasing to 20 to 25 kt.
gusts up to 30 kt. waves 2 to 3 ft, building to 4 to 6 ft. a
chance of rain. 
.fri...s winds 25 to 35 kt with gusts up to 50 kt. waves 5 to
7 ft, except 7 to 10 ft at the bay entrance. rain. vsby 1 nm or
less. 
.fri night...w winds 25 to 30 kt, diminishing to 20 to 25 kt
after midnight. waves 5 to 7 ft. 
.sat...w winds 15 to 20 kt with gusts up to 30 kt, diminishing to
10 to 15 kt with gusts up to 20 kt in the afternoon. waves 2 to
3 ft. at the bay entrance, waves 4 to 6 ft, subsiding to 3 to
4 ft in the afternoon. 
.sat night...sw winds 15 to 20 kt, increasing to 20 to 25 kt
after midnight. gusts up to 30 kt. waves 3 to 5 ft. 
.sun and sun night...nw winds 20 to 25 kt with gusts up to 30 kt.
waves 3 to 5 ft. 
.mon and mon night...nw winds 15 to 20 kt, diminishing to 10 to
15 kt. gusts up to 25 kt. waves 2 to 3 ft. 
.tue...sw winds 15 to 20 kt with gusts up to 25 kt. waves 2 to
4 ft. rain likely with a chance of snow. vsby 1 to 3 nm. 
.tue night...w winds 15 to 20 kt with gusts up to 25 kt. waves
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 190307
cwfbox
expires:202512191600;;834530

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1007 pm est thu dec 18 2025

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


anz250-191600-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
1007 pm est thu dec 18 2025

...storm warning in effect from 6 am est friday through friday
afternoon...

.overnight...s winds 20 to 25 kt with gusts up to 30 kt. seas
3 to 5 ft, building to 5 to 7 ft. wave detail: se 4 ft at
5 seconds and sw 1 foot at 4 seconds, becoming s 6 ft at
5 seconds and se 1 foot at 11 seconds. a chance of rain. 
.fri...s winds 30 to 40 kt with gusts up to 55 kt. seas 6 to
9 ft, building to 8 to 11 ft in the afternoon. wave detail: se
9 ft at 6 seconds and se 1 foot at 11 seconds, becoming s 11 ft
at 7 seconds and se 11 ft at 9 seconds. rain. vsby 1 nm or less. 
.fri night...w winds 25 to 30 kt with gusts up to 45 kt. seas
8 to 11 ft. wave detail: se 9 ft at 10 seconds and sw 8 ft at
7 seconds. a chance of rain in the evening. 
.sat...w winds 25 to 30 kt with gusts up to 35 kt, diminishing to
15 to 20 kt with gusts up to 25 kt in the afternoon. seas 6 to
9 ft, subsiding to 5 to 7 ft in the afternoon. wave detail: w
8 ft at 7 seconds and se 5 ft at 11 seconds, becoming w 6 ft at
7 seconds and se 4 ft at 11 seconds. 
.sat night...sw winds 15 to 20 kt, increasing to 20 to 25 kt
after midnight. gusts up to 30 kt. seas 4 to 6 ft. wave detail:
sw 6 ft at 5 seconds and se 4 ft at 11 seconds. 
.sun...w winds 20 to 25 kt with gusts up to 30 kt. seas 4 to
6 ft. wave detail: sw 6 ft at 6 seconds and se 4 ft at
10 seconds. 
.sun night...nw winds 25 to 30 kt. seas 5 to 8 ft.
.mon...nw winds 25 to 30 kt. seas 5 to 8 ft. 
.mon night...nw winds 15 to 20 kt with gusts up to 30 kt. seas
4 to 6 ft. 
.tue...sw winds 15 to 20 kt with gusts up to 25 kt. seas 3 to
4 ft. rain likely with a chance of snow. vsby 1 to 3 nm. 
.tue night...w winds around 20 kt with gusts up 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 190307
cwfbox
expires:202512191600;;834533

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1007 pm est thu dec 18 2025

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


anz254-191600-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
1007 pm est thu dec 18 2025

...storm warning in effect from 6 am est friday through friday
afternoon...

.overnight...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 n 1 foot at
5 seconds. a slight chance of rain with vsby 1 to 3 nm. 
.fri...s winds 25 to 35 kt with gusts up to 45 kt, increasing to
30 to 40 kt with gusts up to 55 kt in the afternoon. seas 6 to
9 ft, building to 9 to 13 ft in the afternoon. wave detail: s
9 ft at 7 seconds and se 1 foot at 11 seconds, becoming s 13 ft
at 9 seconds and sw 1 foot at 4 seconds. rain. vsby 1 nm or less.
.fri night...w winds 30 to 35 kt with gusts up to 45 kt. seas
9 to 13 ft, except 12 to 16 ft s and e of nantucket. wave detail:
s 13 ft at 11 seconds and w 7 ft at 7 seconds. a chance of rain
in the evening. 
.sat...w winds 25 to 30 kt with gusts up to 35 kt, diminishing to
15 to 20 kt with gusts up to 25 kt in the afternoon. seas 7 to
10 ft, subsiding to 5 to 7 ft in the afternoon. wave detail: s
8 ft at 11 seconds and w 7 ft at 7 seconds, becoming s 6 ft at
11 seconds and w 5 ft at 6 seconds. 
.sat night...sw winds 15 to 20 kt, increasing to 20 to 25 kt
after midnight. gusts up to 30 kt. seas 5 to 7 ft. wave detail: s
7 ft at 6 seconds and se 5 ft at 10 seconds. 
.sun...sw winds 20 to 25 kt with gusts up to 30 kt. seas 5 to
8 ft. wave detail: s 7 ft at 8 seconds and w 4 ft at 5 seconds. 
.sun night...nw winds 25 to 30 kt. seas 6 to 9 ft.
.mon...nw winds 25 to 30 kt. seas 6 to 9 ft. 
.mon night...nw winds 20 to 25 kt. seas 4 to 6 ft.
.tue...sw winds 15 to 20 kt with gusts up to 25 kt. seas 3 to
5 ft. a chance of rain and snow. 
.tue night...w winds 20 to 25 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.

$$

fzus51 kbox 190307
cwfbox
expires:202512191600;;834534

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1007 pm est thu dec 18 2025

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


anz255-191600-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
1007 pm est thu dec 18 2025

...storm warning in effect from 6 am est friday through friday
afternoon...

.overnight...s winds 20 to 25 kt, increasing to 25 to 30 kt. seas
4 to 6 ft, building to 5 to 8 ft. wave detail: s 6 ft at
6 seconds and se 1 foot at 10 seconds, becoming s 8 ft at
7 seconds and se 1 foot at 11 seconds. a chance of rain with vsby
1 to 3 nm. 
.fri...s winds 30 to 40 kt with gusts up to 50 kt. seas 8 to
11 ft, building to 11 to 15 ft in the afternoon. wave detail: s
11 ft at 8 seconds and se 1 foot at 11 seconds, becoming s 15 ft
at 11 seconds and s 14 ft at 8 seconds. rain. vsby 1 nm or less. 
.fri night...w winds 35 to 45 kt. seas 11 to 15 ft. wave detail:
sw 15 ft at 11 seconds and w 14 ft at 9 seconds. a chance of rain
in the evening. 
.sat...w winds 25 to 35 kt with gusts up to 40 kt, diminishing to
15 to 20 kt with gusts up to 25 kt in the afternoon. seas 9 to
12 ft, subsiding to 5 to 8 ft in the afternoon. wave detail: w
11 ft at 9 seconds and s 11 ft at 11 seconds, becoming sw 8 ft at
10 seconds and s 7 ft at 11 seconds. 
.sat night...sw winds 20 to 25 kt, increasing to 25 to 30 kt
after midnight. seas 5 to 7 ft, building to 7 to 10 ft after
midnight. wave detail: sw 7 ft at 10 seconds and se 3 ft at
10 seconds, becoming sw 10 ft at 6 seconds and se 3 ft at
10 seconds. 
.sun and sun night...nw winds 25 to 35 kt. seas 8 to 11 ft. wave
detail: w 11 ft at 7 seconds and se 2 ft at 10 seconds. 
.mon...nw winds 25 to 30 kt with gusts up to 35 kt. seas 7 to
10 ft. 
.mon night...nw winds 20 to 25 kt. seas 4 to 6 ft.
.tue...sw winds 25 to 30 kt. seas 3 to 5 ft. a chance of rain. 
.tue night...w winds 25 to 30 kt with gusts up to 35 kt. seas
5 to 7 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.

$$