fzus51 kbox 210504
cwfbox
expires:202603211800;;039682

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 am edt sat mar 21 2026

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


anz230-211800-
boston harbor-
104 am edt sat mar 21 2026

...small craft advisory in effect until 2 am edt early this
morning...

.rest of tonight...sw winds 10 to 15 kt with gusts up to 25 kt.
waves around 2 ft. a chance of showers. 
.sat...nw winds 10 to 15 kt with gusts up to 20 kt. waves around
2 ft. 
.sat night...n winds 5 to 10 kt, becoming e after midnight. waves
1 foot or less. 
.sun...s winds 10 to 15 kt. gusts up to 20 kt in the afternoon.
waves around 2 ft. a chance of rain in the morning, then rain
likely in the afternoon. 
.sun night...w winds 10 to 15 kt, becoming n 15 to 20 kt after
midnight. waves around 2 ft. rain likely. 
.mon...n winds 15 to 20 kt. waves around 2 ft. a chance of rain. 
.mon night...n winds 15 to 20 kt. waves around 2 ft, except 3 to
5 ft at the outer harbor entrance. 
.tue and tue night...nw winds 10 to 15 kt, becoming sw 15 to
20 kt. waves around 2 ft. 
.wed and wed night...sw winds 15 to 20 kt, becoming w. gusts up
to 25 kt. waves around 2 ft. a chance of rain.  

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 210504
cwfbox
expires:202603211800;;039671

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 am edt sat mar 21 2026

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


anz250-211800-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
104 am edt sat mar 21 2026

...small craft advisory in effect through this evening...

.rest of tonight...sw winds 15 to 20 kt with gusts up to 30 kt.
seas 4 to 6 ft. wave detail: sw 4 ft at 5 seconds and se 4 ft at
9 seconds. showers.
.sat...nw winds 10 to 15 kt with gusts up to 25 kt. seas 3 to
5 ft. wave detail: se 4 ft at 8 seconds and w 3 ft at 4 seconds. 
.sat night...n winds around 10 kt with gusts up to 20 kt,
becoming ne after midnight. seas 3 to 4 ft. wave detail: se 3 ft
at 8 seconds and nw 2 ft at 4 seconds. 
.sun...s winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. seas 2 to 3 ft. wave detail: s 3 ft at 4 seconds and
se 3 ft at 7 seconds. a chance of rain and snow in the morning,
then rain likely in the afternoon. 
.sun night...sw winds 10 to 15 kt, becoming n 15 to 20 kt after
midnight. gusts up to 25 kt. seas 2 to 3 ft, building to 3 to
5 ft after midnight. wave detail: sw 3 ft at 5 seconds and se
3 ft at 8 seconds, becoming ne 5 ft at 8 seconds and nw 2 ft at
3 seconds. rain likely. 
.mon...n winds around 20 kt with gusts up to 25 kt. seas 5 to
8 ft. wave detail: ne 7 ft at 7 seconds. a chance of rain. 
.mon night...n winds 20 to 25 kt. seas 6 to 8 ft. 
.tue...nw winds 20 to 25 kt. seas 5 to 7 ft. 
.tue night...sw winds 20 to 25 kt. seas 4 to 5 ft. 
.wed and wed night...sw winds 20 to 25 kt, becoming nw. seas 3 to
5 ft. a chance of rain.  

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.

$$