fzus51 kbox 210803
cwfbox
expires:202609212100;;807587

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
403 am edt mon sep 21 2026

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


anz230-212100-
boston harbor-
403 am edt mon sep 21 2026

.today...ne winds 10 to 15 kt with gusts up to 20 kt. waves 2 to
3 ft. 
.tonight...ne winds 5 to 10 kt, increasing to 15 to 20 kt after
midnight. waves 1 foot or less, then 2 to 3 ft after midnight. 
.tue...ne winds 15 to 20 kt with gusts up to 25 kt. waves 2 to
3 ft. 
.tue night...ne winds 10 to 15 kt, increasing to 15 to 20 kt
after midnight. gusts up to 25 kt. waves 2 to 3 ft. 
.wed and wed night...ne winds 15 to 20 kt with gusts up to 30 kt.
waves 2 to 3 ft. 
.thu and thu night...ne winds 20 to 25 kt with gusts up to 30 kt.
waves 2 to 3 ft, except 4 to 6 ft at the outer harbor entrance. 
.fri...ne winds 25 to 30 kt with gusts up to 40 kt. waves 2 to
3 ft, except 4 to 6 ft at the outer harbor entrance. a chance of
showers. 
.fri night...ne winds 25 to 30 kt with gusts up to 40 kt. waves
2 to 3 ft, except 5 to 7 ft at the outer harbor entrance. showers
likely.  

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 210803
cwfbox
expires:202609212100;;807578

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
403 am edt mon sep 21 2026

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


anz231-212100-
cape cod bay-
403 am edt mon sep 21 2026

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

.today...ne winds 15 to 20 kt with gusts up to 25 kt. seas 2 to
4 ft. wave detail: n 3 ft at 4 seconds and e 1 foot at 9 seconds.
patchy fog this morning. a chance of showers this morning with
vsby 1 to 3 nm. 
.tonight...ne winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. gusts up to 25 kt. seas 2 to 3 ft. wave detail: n 3 ft
at 5 seconds and e 1 foot at 10 seconds. 
.tue...ne winds 15 to 20 kt with gusts up to 25 kt. seas 3 to
4 ft. wave detail: n 3 ft at 4 seconds and se 1 foot at
14 seconds. 
.tue night...ne winds 15 to 20 kt with gusts up to 30 kt. seas
3 to 4 ft. wave detail: n 3 ft at 4 seconds and se 1 foot at
10 seconds. 
.wed and wed night...ne winds 20 to 25 kt with gusts up to 30 kt.
seas 3 to 5 ft. wave detail: e 5 ft at 10 seconds and ne 4 ft at
4 seconds. 
.thu...ne winds 20 to 25 kt with gusts up to 35 kt. seas 4 to
6 ft. wave detail: e 6 ft at 10 seconds and n 5 ft at 5 seconds. 
.thu night...ne winds 25 to 30 kt with gusts up to 40 kt. seas
4 to 6 ft. a chance of showers. 
.fri...ne winds around 30 kt with gusts up to 45 kt. seas 5 to
7 ft. a chance of showers. 
.fri night...ne winds 25 to 35 kt with gusts up to 45 kt. seas
5 to 7 ft. showers likely.  

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 210803
cwfbox
expires:202609212100;;807576

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
403 am edt mon sep 21 2026

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


anz250-212100-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
403 am edt mon sep 21 2026

.today...ne winds 15 to 20 kt with gusts up to 25 kt. seas 2 to
4 ft. wave detail: ne 4 ft at 5 seconds and s 1 foot at
4 seconds. patchy fog this morning. a slight chance of showers
this morning. 
.tonight...ne winds 10 to 15 kt, increasing to 15 to 20 kt with
gusts up to 25 kt after midnight. seas 2 to 4 ft. wave detail: ne
4 ft at 5 seconds and se 2 ft at 9 seconds. 
.tue...ne winds 15 to 20 kt with gusts up to 25 kt. seas 4 to
5 ft. wave detail: n 5 ft at 5 seconds and se 2 ft at 12 seconds.
.tue night...ne winds 15 to 20 kt with gusts up to 30 kt. seas
4 to 6 ft. wave detail: e 5 ft at 7 seconds and se 2 ft at
10 seconds. 
.wed...ne winds 20 to 25 kt with gusts up to 30 kt. seas 5 to
8 ft. wave detail: e 8 ft at 9 seconds and n 1 foot at 4 seconds.
.wed night...ne winds 15 to 20 kt, increasing to 20 to 25 kt
after midnight. gusts up to 30 kt. seas 7 to 9 ft. wave detail: e
8 ft at 9 seconds. 
.thu and thu night...ne winds 20 to 25 kt with gusts up to 35 kt.
seas 7 to 10 ft. 
.fri...ne winds 25 to 30 kt with gusts up to 45 kt. seas 9 to
12 ft. a chance of showers. 
.fri night...ne winds 25 to 35 kt with gusts up to 45 kt. seas
10 to 13 ft. showers likely.  

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 kgyx 210638
cwfgyx
expires:202609212045;;804713

coastal waters forecast
national weather service gray me
238 am edt mon sep 21 2026

coastal waters from stonington me to merrimack river ma out to 60 nm


anz154-212045-
coastal waters from cape elizabeth, me to merrimack river, ma out
25 nm-
238 am edt mon sep 21 2026

.rest of tonight...ne winds 5 to 10 kt, increasing to 10 to 15 kt
with gusts up to 20 kt towards daybreak. seas 2 to 3 ft. wave
detail: s 2 ft at 4 seconds. a slight chance of showers. patchy fog.
patchy fog towards daybreak. vsby 1 to 3 nm. 
.mon...n winds 10 to 15 kt, becoming ne 5 to 10 kt in the afternoon.
seas 2 to 3 ft. wave detail: ne 2 ft at 4 seconds. 
.mon night...ne winds 5 to 10 kt, increasing to 10 to 15 kt after
midnight. gusts up to 25 kt. seas 2 to 3 ft. wave detail: ne 3 ft at
5 seconds. 
.tue...ne winds 10 to 15 kt with gusts up to 25 kt. seas 3 to 4 ft.
wave detail: ne 3 ft at 5 seconds. 
.tue night...ne winds 5 to 10 kt, increasing to 15 to 20 kt after
midnight. seas 3 to 4 ft. wave detail: e 3 ft at 7 seconds. 
.wed...ne winds 15 to 20 kt with gusts up to 30 kt. seas 4 to 6 ft.
wave detail: e 6 ft at 7 seconds. 
.wed night...ne winds 10 to 15 kt with gusts up to 25 kt. seas 5 to
7 ft. 
.thu...ne winds 15 to 20 kt with gusts up to 25 kt. seas 6 to 8 ft. 
.thu night...ne winds 5 to 10 kt with gusts up to 20 kt, increasing
to 15 to 20 kt with gusts up to 30 kt after midnight. seas 7 to
9 ft. 
.fri...ne winds 15 to 20 kt, increasing to 20 to 25 kt in the
afternoon. gusts up to 35 kt. seas 8 to 11 ft. a chance of showers
in the afternoon. 
.fri night...ne winds 25 to 30 kt with gusts up to 40 kt. seas 9 to
11 ft. a chance of showers in the evening, then showers likely after
midnight.  

$$