fzus51 kbox 211703
cwfbox
expires:202610220600;;947019

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 pm edt wed oct 21 2026

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


anz230-220600-
boston harbor-
103 pm edt wed oct 21 2026

...small craft advisory in effect through late tonight...

.this afternoon...ne winds 20 to 25 kt. waves 2 to 3 ft. 
.tonight...ne winds 15 to 20 kt with gusts up to 25 kt. waves
2 to 3 ft. 
.thu...n winds 15 to 20 kt with gusts up to 25 kt. waves around
2 ft, except 3 to 5 ft at the outer harbor entrance. 
.thu night...n winds 15 to 20 kt, increasing to 20 to 25 kt after
midnight. waves around 2 ft, except 3 to 5 ft at the outer harbor
entrance. 
.fri and fri night...n winds 15 to 20 kt with gusts up to 25 kt.
waves around 2 ft, except 3 to 5 ft at the outer harbor entrance.
.sat through sun night...sw winds 5 to 10 kt. waves 1 foot 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 211703
cwfbox
expires:202610220600;;947008

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 pm edt wed oct 21 2026

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


anz250-220600-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
103 pm edt wed oct 21 2026

...small craft advisory in effect through thursday afternoon...
...gale watch in effect from thursday afternoon through friday
afternoon...

.this afternoon...ne winds 20 to 25 kt with gusts up to 30 kt.
seas 7 to 9 ft. wave detail: e 9 ft at 9 seconds and nw 2 ft at
5 seconds. 
.tonight...ne winds 20 to 25 kt with gusts up to 30 kt. seas 7 to
9 ft. wave detail: e 9 ft at 10 seconds and nw 3 ft at 5 seconds.
a chance of showers. 
.thu...n winds 20 to 25 kt with gusts up to 30 kt. seas 6 to
9 ft. wave detail: e 9 ft at 9 seconds and n 5 ft at 6 seconds. 
.thu night...n winds 25 to 30 kt with gusts up to 35 kt. seas
6 to 9 ft. wave detail: n 9 ft at 7 seconds. 
.fri...n winds 20 to 25 kt with gusts up to 30 kt. seas 6 to
9 ft. wave detail: ne 9 ft at 9 seconds and n 7 ft at 7 seconds. 
.fri night...n winds 10 to 15 kt with gusts up to 20 kt. seas
5 to 7 ft. wave detail: ne 7 ft at 9 seconds and nw 2 ft at
6 seconds. 
.sat...w winds 5 to 10 kt. seas 3 to 5 ft. 
.sat night through sun night...sw 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.

$$