fzus51 kbox 200505
cwfbox
expires:202604201800;;672004

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 am edt mon apr 20 2026

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


anz230-201800-
boston harbor-
104 am edt mon apr 20 2026

.rest of tonight...w winds 10 to 15 kt. waves around 2 ft. 
.mon...w winds 5 to 10 kt. waves 1 foot or less. a chance of
showers in the afternoon. 
.mon night...nw winds 5 to 10 kt, becoming n 10 to 15 kt after
midnight. waves 1 foot or less, then around 2 ft after midnight. 
.tue...n winds 10 to 15 kt, becoming e 5 to 10 kt in the
afternoon. waves around 2 ft in the morning, then 1 foot or less.
.tue night and wed...s winds around 10 kt. waves around 2 ft. 
.wed night...s winds 5 to 10 kt, becoming sw after midnight.
waves 1 foot or less. 
.thu through fri night...ne 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 200505
cwfbox
expires:202604201800;;671993

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 am edt mon apr 20 2026

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


anz250-201800-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
104 am edt mon apr 20 2026

.rest of tonight...w winds 10 to 15 kt with gusts up to 20 kt.
seas 3 to 5 ft. wave detail: nw 3 ft at 4 seconds and se 3 ft at
7 seconds. 
.mon...w winds 5 to 10 kt, becoming sw in the afternoon. seas
2 to 4 ft. wave detail: se 3 ft at 7 seconds and w 2 ft at
4 seconds. 
.mon night...n winds 5 to 10 kt, increasing to 15 to 20 kt after
midnight. seas 2 to 4 ft. wave detail: ne 4 ft at 8 seconds and
nw 3 ft at 4 seconds. 
.tue...n winds 10 to 15 kt with gusts up to 20 kt, becoming ne
5 to 10 kt in the afternoon. seas 2 to 4 ft. wave detail: n 4 ft
at 5 seconds and se 1 foot at 7 seconds. 
.tue night through wed night...sw winds 10 to 15 kt. seas 2 to
3 ft. wave detail: e 3 ft at 9 seconds and se 3 ft at 16 seconds.
.thu through fri night...ne winds 5 to 10 kt. seas 2 to 3 ft.
wave detail: s 3 ft at 7 seconds and e 3 ft at 9 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.

$$