fzus51 kbox 200804
cwfbox
expires:202610202100;;874559

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

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


anz231-202100-
cape cod bay-
403 am edt tue oct 20 2026

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

.today...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. 
.tonight...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 10 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
3 to 5 ft. wave detail: n 5 ft at 5 seconds and e 5 ft at
9 seconds. showers, mainly in the evening. 
.thu...n 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 5 ft at 9 seconds. 
.thu night...n winds 25 to 30 kt with gusts up to 35 kt. seas
4 to 6 ft. wave detail: n 6 ft at 6 seconds and e 5 ft at
9 seconds. 
.fri...n winds 20 to 25 kt with gusts up to 30 kt. seas 4 to
6 ft. 
.fri night...n winds 15 to 20 kt with gusts up to 30 kt. seas
3 to 5 ft. 
.sat and sat night...nw winds 10 to 15 kt with gusts up to 20 kt,
becoming w 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 200804
cwfbox
expires:202610202100;;874563

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

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


anz232-202100-
nantucket sound-
403 am edt tue oct 20 2026

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

.today...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 5 ft at 10 seconds. 
.tonight...ne winds 25 to 30 kt with gusts up to 40 kt. seas 5 to
7 ft. wave detail: n 6 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...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 4 ft at
9 seconds. a chance of showers. 
.thu...n 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
4 ft at 9 seconds. a chance of showers in the morning. 
.thu night...n winds 25 to 30 kt with gusts up to 35 kt. seas
4 to 6 ft. wave detail: n 5 ft at 5 seconds and e 3 ft at
9 seconds. 
.fri...n winds 25 to 30 kt. seas 4 to 6 ft. 
.fri night...n winds 20 to 25 kt. seas 3 to 5 ft. 
.sat and sat night...n winds 15 to 20 kt, becoming w 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 200804
cwfbox
expires:202610202100;;874564

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

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


anz233-202100-
vineyard sound-
403 am edt tue oct 20 2026

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

.today...ne winds 20 to 25 kt with gusts up to 35 kt. seas 4 to
6 ft. wave detail: n 5 ft at 5 seconds and se 2 ft at 11 seconds.
.tonight...ne winds 20 to 25 kt, increasing to 25 to 30 kt after
midnight. seas 4 to 6 ft. wave detail: ne 5 ft at 5 seconds and e
2 ft at 9 seconds. 
.wed...ne winds 25 to 30 kt with gusts up to 35 kt. seas 4 to
6 ft. wave detail: n 5 ft at 6 seconds and se 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 7 seconds and ne 4 ft at
4 seconds. a chance of showers.
.thu...n 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 1 foot at
10 seconds. 
.thu night...n winds 20 to 25 kt with gusts up to 30 kt. seas
2 to 4 ft. wave detail: n 3 ft at 4 seconds and se 1 foot at
9 seconds. 
.fri and fri night...n winds 20 to 25 kt, diminishing to 15 to
20 kt. seas 2 to 4 ft. 
.sat and sat night...nw winds 10 to 15 kt with gusts up to 20 kt,
becoming w 5 to 10 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 200804
cwfbox
expires:202610202100;;874565

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

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


anz234-202100-
buzzards bay-
403 am edt tue oct 20 2026

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

.today...ne winds 20 to 25 kt, increasing to 25 to 30 kt this
afternoon. seas 4 to 6 ft. wave detail: n 6 ft at 5 seconds and
se 2 ft at 12 seconds. 
.tonight...ne winds 20 to 25 kt, increasing to 25 to 30 kt after
midnight. seas 4 to 6 ft. wave detail: n 5 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 5 ft at 5 seconds and e 2 ft at 10 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
12 seconds. 
.thu and thu night...n winds 20 to 25 kt with gusts up to 30 kt.
seas 2 to 4 ft. wave detail: n 4 ft at 5 seconds and e 2 ft at
10 seconds. 
.fri through sat night...w winds 20 to 25 kt. seas 2 to 3 ft.
wave detail: n 3 ft at 5 seconds and e 1 foot at 10 seconds.  

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 200804
cwfbox
expires:202610202100;;874566

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

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


anz235-202100-
rhode island sound-
403 am edt tue oct 20 2026

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

.today...ne winds 20 to 25 kt with gusts up to 35 kt. seas 5 to
7 ft. wave detail: se 6 ft at 11 seconds and n 5 ft at 5 seconds.
.tonight...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 6 seconds and e 5 ft at 9 seconds. 
.wed night...ne winds 20 to 25 kt with gusts up to 30 kt. seas
5 to 7 ft. wave detail: n 5 ft at 6 seconds and e 5 ft at
10 seconds. 
.thu...n winds 20 to 25 kt, diminishing to 15 to 20 kt in the
afternoon. gusts up to 30 kt. seas 4 to 6 ft. wave detail: n 6 ft
at 5 seconds and se 4 ft at 10 seconds. 
.thu night...n 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 se 3 ft at
9 seconds. 
.fri...n winds 20 to 25 kt. seas 3 to 5 ft. 
.fri night and sat...n winds 15 to 20 kt, becoming nw 10 to
15 kt. seas 2 to 4 ft. 
.sat night...w winds around 10 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 200804
cwfbox
expires:202610202100;;874569

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

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


anz236-202100-
narragansett bay-
403 am edt tue oct 20 2026

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

.today...n winds 15 to 20 kt with gusts up to 30 kt. waves 2 to
3 ft. 
.tonight...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...n winds 15 to 20 kt with gusts up to 25 kt. waves
2 to 3 ft. 
.thu and 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 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 200804
cwfbox
expires:202610202100;;874557

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

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


anz250-202100-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
403 am edt tue oct 20 2026

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

.today...ne winds 15 to 20 kt with gusts up to 30 kt. seas 5 to
8 ft, building to 7 to 8 ft this afternoon. wave detail: e 8 ft
at 11 seconds and n 4 ft at 4 seconds, becoming e 8 ft at
10 seconds and n 7 ft at 6 seconds. 
.tonight...ne winds 20 to 25 kt with gusts up to 35 kt. seas 6 to
8 ft. wave detail: n 8 ft at 6 seconds and e 8 ft at 10 seconds. 
.wed...ne winds 20 to 25 kt, diminishing to 15 to 20 kt in the
afternoon. gusts up to 30 kt. seas 6 to 9 ft. wave detail: e 8 ft
at 9 seconds and n 7 ft at 6 seconds. 
.wed night...ne winds 15 to 20 kt with gusts up to 30 kt. seas
6 to 8 ft. wave detail: n 8 ft at 6 seconds and e 7 ft at
9 seconds. 
.thu and thu night...n winds 20 to 25 kt with gusts up to 35 kt.
seas 5 to 8 ft. wave detail: n 7 ft at 6 seconds and e 7 ft at
9 seconds. 
.fri and fri night...n winds 20 to 25 kt, diminishing to 15 to
20 kt. gusts up to 30 kt. seas 5 to 8 ft. wave detail: n 8 ft at
7 seconds and e 8 ft at 9 seconds. 
.sat...nw winds 10 to 15 kt with gusts up to 20 kt. seas 4 to
6 ft. 
.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 200804
cwfbox
expires:202610202100;;874560

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

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


anz254-202100-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
403 am edt tue oct 20 2026

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

.today...ne winds 20 to 25 kt, increasing to 25 to 30 kt this
afternoon. gusts up to 40 kt. seas 6 to 9 ft. wave detail: e 9 ft
at 10 seconds and n 6 ft at 5 seconds. 
.tonight...ne winds 25 to 30 kt with gusts up to 40 kt. seas 8 to
11 ft. wave detail: e 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: e 10 ft at 9 seconds and ne 8 ft at
7 seconds. showers likely in the afternoon. 
.wed night...ne winds 25 to 30 kt with gusts up to 35 kt. seas
7 to 10 ft. wave detail: e 9 ft at 9 seconds and n 6 ft at
6 seconds. a chance of showers. a chance of tstms after midnight.
patchy fog after midnight. 
.thu...n winds 25 to 30 kt with gusts up to 40 kt. seas 7 to
10 ft. wave detail: e 8 ft at 9 seconds and n 7 ft at 6 seconds.
a chance of showers in the morning. 
.thu night...n winds 25 to 30 kt with gusts up to 35 kt. seas
6 to 9 ft. wave detail: n 7 ft at 7 seconds and e 6 ft at
9 seconds. 
.fri and fri night...n winds 25 to 30 kt, diminishing to 20 to
25 kt. seas 6 to 9 ft. a chance of showers. 
.sat...n winds 15 to 20 kt. seas 5 to 7 ft. 
.sat night...w winds 5 to 10 kt. seas 4 to 6 ft.  

winds and seas higher in and near tstms.

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 200804
cwfbox
expires:202610202100;;874561

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

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


anz255-202100-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
403 am edt tue oct 20 2026

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

.today...ne winds 25 to 30 kt with gusts up to 40 kt. seas 6 to
9 ft. wave detail: n 7 ft at 6 seconds and e 7 ft at 10 seconds. 
.tonight...ne winds 30 to 35 kt with gusts up to 40 kt. seas 8 to
11 ft. wave detail: n 9 ft at 6 seconds and e 9 ft at 9 seconds. 
.wed...ne winds 30 to 35 kt with gusts up to 40 kt. seas 8 to
11 ft. wave detail: e 10 ft at 9 seconds and n 9 ft at 7 seconds.
patchy fog in the afternoon. showers likely in the afternoon. 
.wed night...ne winds 30 to 35 kt. seas 8 to 11 ft. wave detail:
n 8 ft at 7 seconds and e 8 ft at 10 seconds. a chance of
showers. a chance of tstms after midnight. patchy fog after
midnight. 
.thu...n winds 25 to 35 kt with gusts up to 40 kt. seas 7 to
10 ft. wave detail: n 8 ft at 6 seconds and e 6 ft at 9 seconds.
a chance of showers in the morning. 
.thu night...n winds 25 to 30 kt with gusts up to 35 kt. seas
6 to 9 ft. wave detail: n 7 ft at 6 seconds and e 6 ft at
9 seconds. 
.fri and fri night...n winds 25 to 30 kt, diminishing to 20 to
25 kt. seas 5 to 8 ft. 
.sat...n winds 15 to 20 kt. seas 4 to 6 ft. 
.sat night...nw winds 5 to 10 kt. seas 3 to 5 ft.  

winds and seas higher in and near tstms.

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.

$$