fzus51 kbox 182005
cwfbox
expires:202509190900;;208497

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 pm edt thu sep 18 2025

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


anz230-190900-
boston harbor-
404 pm edt thu sep 18 2025

.tonight...s winds 5 to 10 kt, becoming w after midnight. waves
1 foot or less. 
.fri...nw winds around 10 kt. waves around 2 ft. 
.fri night...n winds 10 to 15 kt. waves around 2 ft. 
.sat...ne 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.
.sat night...se winds 5 to 10 kt, becoming sw after midnight.
waves 1 foot or less. 
.sun and sun night...sw winds 5 to 10 kt. waves around 2 ft. 
.mon through tue night...w winds 10 to 15 kt with gusts up to
20 kt. waves 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 182005
cwfbox
expires:202509190900;;208486

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 pm edt thu sep 18 2025

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


anz250-190900-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
404 pm edt thu sep 18 2025

.tonight...s winds 5 to 10 kt, becoming w after midnight. seas
2 to 3 ft. wave detail: se 3 ft at 7 seconds and sw 2 ft at
3 seconds. patchy fog. vsby 1 to 3 nm, decreasing to 1 nm or less
after midnight. 
.fri...nw winds 10 to 15 kt with gusts up to 20 kt, becoming n
5 to 10 kt in the afternoon. seas 2 to 3 ft. wave detail: se 3 ft
at 7 seconds and w 2 ft at 3 seconds. 
.fri night...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: n 4 ft
at 4 seconds and se 2 ft at 7 seconds. 
.sat...ne winds 10 to 15 kt with gusts up to 20 kt, diminishing
to 5 to 10 kt in the afternoon. seas 2 to 4 ft. wave detail: n
3 ft at 5 seconds and se 2 ft at 8 seconds. 
.sat night through sun night...s winds 10 to 15 kt with gusts up
to 20 kt. seas 2 to 4 ft. wave detail: se 3 ft at 12 seconds and
se 2 ft at 3 seconds.
.mon...s winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
4 ft. wave detail: se 3 ft at 11 seconds and se 2 ft at
4 seconds. 
.mon night through tue night...w winds 10 to 15 kt with gusts up
to 20 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.

$$