fzus51 kbox 181703
cwfbox
expires:202609190600;;663256

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 pm edt fri sep 18 2026

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


anz230-190600-
boston harbor-
103 pm edt fri sep 18 2026

.this afternoon...n winds 5 to 10 kt with gusts up to 20 kt.
waves around 2 ft. 
.tonight...n winds 10 to 15 kt with gusts up to 25 kt. waves
around 2 ft. 
.sat...n winds around 10 kt with gusts up to 20 kt, becoming e in
the afternoon. waves around 2 ft in the morning, then 1 foot or
less. 
.sat night...se winds 5 to 10 kt. waves 1 foot or less. 
.sun...se winds 5 to 10 kt. waves 1 foot or less. showers likely
in the afternoon. 
.sun night...se winds 5 to 10 kt, becoming ne after midnight.
waves 1 foot or less. showers.
.mon through tue night...ne winds 20 to 25 kt with gusts up to
30 kt. waves 2 to 3 ft. a chance of showers.  

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 181703
cwfbox
expires:202609190600;;663245

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 pm edt fri sep 18 2026

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


anz250-190600-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
103 pm edt fri sep 18 2026

...small craft advisory in effect from 8 pm edt this evening
through saturday morning...

.this afternoon...nw winds around 5 kt with gusts up to 20 kt.
seas around 2 ft. wave detail: e 2 ft at 8 seconds and w 1 foot
at 3 seconds. 
.tonight...n winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. gusts up to 25 kt. seas 2 to 4 ft. wave detail: w 4 ft
at 5 seconds and ne 4 ft at 6 seconds. 
.sat...n winds 10 to 15 kt with gusts up to 25 kt, becoming ne
5 to 10 kt in the afternoon. seas 2 to 4 ft. wave detail: ne 4 ft
at 6 seconds and w 2 ft at 5 seconds. 
.sat night...se winds around 5 kt. seas 2 to 3 ft. wave detail: n
3 ft at 6 seconds. 
.sun...s winds 5 to 10 kt. seas around 2 ft. wave detail: e 2 ft
at 8 seconds and s 1 foot at 2 seconds. a chance of showers in
the afternoon. 
.sun night...se winds 5 to 10 kt, becoming ne after midnight.
seas around 2 ft. wave detail: e 2 ft at 6 seconds and s 1 foot
at 3 seconds. patchy fog. showers likely. vsby 1 to 3 nm. 
.mon...ne winds 10 to 15 kt with gusts up to 25 kt. seas 2 to
3 ft. a chance of showers. 
.mon night and tue...ne winds 15 to 20 kt with gusts up to 30 kt.
seas 2 to 4 ft. 
.tue night...ne winds 15 to 20 kt with gusts up to 30 kt. seas
4 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.

$$