fzus51 kbox 200504
cwfbox
expires:202610201800;;865917

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt tue oct 20 2026

coastal waters from the merrimack river ma to watch hill ri out
to 60 nm


anz231-201800-
cape cod bay-
103 am edt tue oct 20 2026

...gale warning in effect through wednesday evening...

.rest of tonight...n winds 15 to 20 kt with gusts up to 30 kt.
seas 3 to 4 ft. wave detail: n 3 ft at 4 seconds and e 2 ft at
11 seconds. 
.tue...ne winds 20 to 25 kt with gusts up to 35 kt. seas 3 to
5 ft. wave detail: e 5 ft at 10 seconds and n 4 ft at 4 seconds. 
.tue night...ne winds 25 to 30 kt with gusts up to 40 kt. seas
4 to 6 ft. wave detail: n 6 ft at 5 seconds and e 6 ft at
9 seconds. 
.wed...ne winds 25 to 30 kt, diminishing to 20 to 25 kt in the
afternoon. seas 4 to 6 ft. wave detail: n 6 ft at 5 seconds and e
6 ft at 9 seconds. 
.wed night...ne winds 20 to 25 kt with gusts up to 30 kt. seas
4 to 6 ft. wave detail: n 5 ft at 5 seconds and ne 5 ft at
9 seconds. a chance of showers after midnight. 
.thu...n winds 20 to 25 kt, diminishing to 15 to 20 kt in the
afternoon. gusts up to 30 kt. seas 3 to 5 ft. wave detail: n 5 ft
at 5 seconds and e 4 ft at 10 seconds. a chance of showers in the
morning. 
.thu night...n winds 20 to 25 kt, increasing to 25 to 30 kt after
midnight. seas 3 to 5 ft. 
.fri...n winds 20 to 25 kt with gusts up to 30 kt. seas 4 to
6 ft. 
.fri night and sat...n winds 15 to 20 kt with gusts up to 25 kt,
diminishing to 10 to 15 kt. seas 3 to 5 ft. 
.sat night...w winds 5 to 10 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 200504
cwfbox
expires:202610201800;;865921

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt tue oct 20 2026

coastal waters from the merrimack river ma to watch hill ri out
to 60 nm


anz232-201800-
nantucket sound-
103 am edt tue oct 20 2026

...gale warning in effect through wednesday evening...

.rest of tonight...ne winds 20 to 25 kt with gusts up to 30 kt.
seas 3 to 5 ft. wave detail: n 4 ft at 4 seconds and e 3 ft at
10 seconds. 
.tue...ne winds 25 to 30 kt with gusts up to 40 kt. seas 4 to
6 ft. wave detail: n 5 ft at 5 seconds and e 4 ft at 10 seconds. 
.tue night...ne winds 25 to 30 kt with gusts up to 40 kt. seas
5 to 7 ft. wave detail: n 7 ft at 5 seconds and e 4 ft at
10 seconds. 
.wed...ne winds 25 to 30 kt with gusts up to 35 kt. seas 5 to
7 ft. wave detail: n 6 ft at 5 seconds and e 5 ft at 9 seconds. 
.wed night and thu...n winds 25 to 30 kt with gusts up to 35 kt.
seas 5 to 7 ft. wave detail: n 5 ft at 6 seconds and e 5 ft at
10 seconds. a chance of showers. 
.thu night...n winds 20 to 25 kt, increasing to 25 to 30 kt after
midnight. seas 4 to 6 ft. wave detail: n 5 ft at 4 seconds and e
3 ft at 9 seconds. 
.fri...n winds 25 to 30 kt. seas 4 to 6 ft. 
.fri night and sat...n winds 15 to 20 kt with gusts up to 25 kt,
diminishing to 10 to 15 kt. seas 3 to 5 ft. 
.sat night...nw winds 5 to 10 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 200504
cwfbox
expires:202610201800;;865922

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt tue oct 20 2026

coastal waters from the merrimack river ma to watch hill ri out
to 60 nm


anz233-201800-
vineyard sound-
103 am edt tue oct 20 2026

...gale warning in effect through wednesday evening...

.rest of tonight...ne winds 20 to 25 kt with gusts up to 30 kt.
seas 3 to 5 ft. wave detail: n 3 ft at 4 seconds and se 2 ft at
12 seconds. 
.tue...ne winds 20 to 25 kt with gusts up to 35 kt. seas 4 to
6 ft. wave detail: n 4 ft at 4 seconds and se 1 foot at
11 seconds. 
.tue night...ne winds 20 to 25 kt, increasing to 25 to 30 kt
after midnight. seas 4 to 6 ft. wave detail: n 6 ft at 5 seconds
and se 1 foot at 10 seconds. 
.wed...ne winds 25 to 30 kt with gusts up to 35 kt. seas 4 to
6 ft. wave detail: ne 5 ft at 6 seconds and e 2 ft at 9 seconds. 
.wed night and thu...n winds 20 to 25 kt with gusts up to 30 kt.
seas 3 to 5 ft. wave detail: ne 5 ft at 6 seconds and se 2 ft at
11 seconds. a chance of showers through the day. 
.thu night...n winds 15 to 20 kt, increasing to 20 to 25 kt after
midnight. seas 2 to 4 ft. wave detail: n 3 ft at 4 seconds and e
2 ft at 10 seconds. 
.fri through sat...n winds 20 to 25 kt. seas 2 to 4 ft. 
.sat night...w winds around 5 kt. seas around 2 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 200504
cwfbox
expires:202610201800;;865923

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt tue oct 20 2026

coastal waters from the merrimack river ma to watch hill ri out
to 60 nm


anz234-201800-
buzzards bay-
103 am edt tue oct 20 2026

...gale warning in effect through wednesday evening...

.rest of tonight...n winds 20 to 25 kt with gusts up to 30 kt.
seas 3 to 4 ft. wave detail: n 3 ft at 4 seconds and se 2 ft at
13 seconds. 
.tue...ne winds 20 to 25 kt, increasing to 25 to 30 kt in the
afternoon. seas 4 to 6 ft. wave detail: n 5 ft at 4 seconds and
se 2 ft at 12 seconds. 
.tue night...ne winds 20 to 25 kt, increasing to 25 to 30 kt
after midnight. seas 4 to 6 ft. wave detail: n 6 ft at 5 seconds
and e 2 ft at 10 seconds. 
.wed...ne winds 25 to 30 kt with gusts up to 35 kt. seas 3 to
5 ft. wave detail: n 4 ft at 5 seconds and e 2 ft at 9 seconds. 
.wed night...ne winds 20 to 25 kt with gusts up to 30 kt. seas
3 to 5 ft. wave detail: n 5 ft at 5 seconds and e 2 ft at
11 seconds. a chance of showers after midnight. 
.thu...n winds 20 to 25 kt, diminishing to 15 to 20 kt in the
afternoon. seas 2 to 3 ft. wave detail: n 3 ft at 5 seconds and e
2 ft at 11 seconds. a chance of showers in the morning. 
.thu night...n winds 15 to 20 kt with gusts up to 25 kt. seas
2 to 3 ft. 
.fri through sat 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 200504
cwfbox
expires:202610201800;;865924

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt tue oct 20 2026

coastal waters from the merrimack river ma to watch hill ri out
to 60 nm


anz235-201800-
rhode island sound-
103 am edt tue oct 20 2026

...gale warning in effect through wednesday evening...

.rest of tonight...n winds 20 to 25 kt with gusts up to 30 kt.
seas 5 to 7 ft. wave detail: se 5 ft at 12 seconds and n 4 ft at
4 seconds. 
.tue...ne winds 20 to 25 kt with gusts up to 35 kt. seas 5 to
7 ft. wave detail: n 5 ft at 5 seconds and se 5 ft at 11 seconds.
.tue night...ne winds 20 to 25 kt, increasing to 25 to 30 kt
after midnight. gusts up to 40 kt. seas 5 to 7 ft. wave detail: n
6 ft at 5 seconds and e 5 ft at 10 seconds. 
.wed...ne winds 25 to 30 kt with gusts up to 35 kt. seas 5 to
7 ft. wave detail: n 6 ft at 5 seconds and se 5 ft at 9 seconds. 
.wed night and thu...n winds 20 to 25 kt with gusts up to 30 kt.
seas 5 to 7 ft. wave detail: n 6 ft at 6 seconds and e 5 ft at
10 seconds. a chance of showers through the day. 
.thu night...n winds 20 to 25 kt. seas 3 to 5 ft. wave detail: n
4 ft at 4 seconds and se 3 ft at 9 seconds. 
.fri...n winds 20 to 25 kt. seas 3 to 5 ft. 
.fri night through sat night...w winds 15 to 20 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 200504
cwfbox
expires:202610201800;;865927

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt tue oct 20 2026

coastal waters from the merrimack river ma to watch hill ri out
to 60 nm


anz236-201800-
narragansett bay-
103 am edt tue oct 20 2026

...small craft advisory in effect from 8 am edt this morning
through wednesday afternoon...

.rest of tonight...n winds 15 to 20 kt with gusts up to 25 kt.
waves 2 to 3 ft. 
.tue...n winds 15 to 20 kt with gusts up to 30 kt. waves 2 to
3 ft. 
.tue night...ne winds 15 to 20 kt, increasing to 20 to 25 kt
after midnight. gusts up to 30 kt. waves 2 to 3 ft. 
.wed...ne winds 20 to 25 kt with gusts up to 30 kt. waves around
3 ft. 
.wed night through thu night...n winds 15 to 20 kt with gusts up
to 25 kt. waves 2 to 3 ft. 
.fri through sat night...w winds 15 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 200504
cwfbox
expires:202610201800;;865915

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt tue oct 20 2026

coastal waters from the merrimack river ma to watch hill ri out
to 60 nm


anz250-201800-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
103 am edt tue oct 20 2026

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

.rest of tonight...n winds 10 to 15 kt with gusts up to 25 kt.
seas 5 to 7 ft. wave detail: e 7 ft at 10 seconds and n 2 ft at
4 seconds. 
.tue...ne winds 15 to 20 kt with gusts up to 30 kt. seas 6 to
8 ft. wave detail: e 8 ft at 10 seconds and n 7 ft at 6 seconds. 
.tue night...ne winds 20 to 25 kt with gusts up to 35 kt. seas
6 to 9 ft. wave detail: e 8 ft at 10 seconds and n 7 ft at
6 seconds. 
.wed...ne winds 20 to 25 kt, diminishing to 15 to 20 kt in the
afternoon. gusts up to 30 kt. seas 7 to 9 ft. wave detail: e 8 ft
at 9 seconds and n 7 ft at 6 seconds. 
.wed night through thu night...n winds 20 to 25 kt with gusts up
to 30 kt. seas 5 to 8 ft. wave detail: n 8 ft at 6 seconds and e
8 ft at 9 seconds. 
.fri through sat...nw winds 20 to 25 kt with gusts up to 30 kt.
seas 5 to 8 ft. wave detail: n 7 ft at 7 seconds and e 7 ft at
9 seconds. 
.sat night...w winds 5 to 10 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 200504
cwfbox
expires:202610201800;;865918

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt tue oct 20 2026

coastal waters from the merrimack river ma to watch hill ri out
to 60 nm


anz254-201800-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
103 am edt tue oct 20 2026

...gale warning in effect through wednesday evening...

.rest of tonight...ne winds 20 to 25 kt with gusts up to 35 kt.
seas 6 to 9 ft. wave detail: e 8 ft at 10 seconds and n 4 ft at
4 seconds. 
.tue...ne winds 20 to 25 kt, increasing to 25 to 30 kt in the
afternoon. gusts up to 40 kt. seas 7 to 10 ft. wave detail: e
9 ft at 10 seconds and n 6 ft at 5 seconds. 
.tue night...ne winds 25 to 30 kt with gusts up to 40 kt. seas
8 to 11 ft. wave detail: ne 10 ft at 9 seconds and ne 8 ft at
7 seconds. 
.wed...ne winds 25 to 30 kt with gusts up to 40 kt. seas 8 to
11 ft. wave detail: ne 10 ft at 9 seconds and n 7 ft at
6 seconds. a chance of showers in the afternoon. 
.wed night...ne winds 25 to 30 kt. seas 8 to 11 ft. wave detail:
e 10 ft at 10 seconds and n 7 ft at 8 seconds. a chance of
showers. 
.thu...n winds 25 to 30 kt, diminishing to 20 to 25 kt in the
afternoon. seas 7 to 10 ft. wave detail: e 9 ft at 10 seconds and
n 6 ft at 6 seconds. a chance of showers in the morning. 
.thu night...n winds 20 to 25 kt, increasing to 25 to 30 kt after
midnight. seas 6 to 9 ft. 
.fri through sat...n winds 25 to 30 kt. seas 6 to 9 ft. 
.sat night...nw winds 5 to 10 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 200504
cwfbox
expires:202610201800;;865919

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 am edt tue oct 20 2026

coastal waters from the merrimack river ma to watch hill ri out
to 60 nm


anz255-201800-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
103 am edt tue oct 20 2026

...gale warning in effect through wednesday evening...

.rest of tonight...ne winds 25 to 30 kt with gusts up to 35 kt.
seas 6 to 9 ft. wave detail: e 8 ft at 11 seconds and n 6 ft at
5 seconds. a slight chance of showers. 
.tue...ne winds 25 to 30 kt with gusts up to 40 kt. seas 7 to
10 ft. wave detail: e 8 ft at 10 seconds and n 7 ft at 6 seconds.
.tue night...ne winds 30 to 35 kt with gusts up to 40 kt. seas
8 to 11 ft. wave detail: e 11 ft at 9 seconds and n 8 ft at
6 seconds. 
.wed...ne winds 30 to 35 kt with gusts up to 40 kt. seas 8 to
11 ft. wave detail: e 11 ft at 9 seconds and n 7 ft at 6 seconds.
a chance of showers in the afternoon. 
.wed night...ne winds 30 to 35 kt. seas 8 to 11 ft. wave detail:
e 11 ft at 10 seconds and n 7 ft at 6 seconds. a chance of
showers. 
.thu...n winds 25 to 30 kt with gusts up to 35 kt. seas 8 to
11 ft, subsiding to 6 to 9 ft in the afternoon. wave detail: e
8 ft at 10 seconds and n 7 ft at 6 seconds, becoming e 7 ft at
9 seconds and n 6 ft at 6 seconds. a chance of showers in the
morning. 
.thu night...n winds 20 to 25 kt, increasing to 25 to 30 kt after
midnight. seas 6 to 9 ft. 
.fri...n winds 25 to 30 kt. seas 6 to 9 ft. 
.fri night and sat...n winds 20 to 25 kt, diminishing to 10 to
15 kt. seas 5 to 7 ft. 
.sat night...nw winds around 5 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.

$$