fzus51 kbox 210804
cwfbox
expires:202603212100;;047952

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

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


anz230-212100-
boston harbor-
404 am edt sat mar 21 2026

.today...nw winds 10 to 15 kt with gusts up to 20 kt. waves
around 2 ft. 
.tonight...n winds 5 to 10 kt, becoming e after midnight. waves
around 2 ft in the evening, then 1 foot or less. 
.sun...s winds 10 to 15 kt with gusts up to 20 kt. waves around
2 ft. a chance of rain in the morning, then rain likely in the
afternoon. patchy fog in the afternoon. 
.sun night...w winds around 10 kt, becoming n 15 to 20 kt after
midnight. waves around 2 ft. rain likely. patchy fog in the
evening with vsby 1 to 3 nm. 
.mon...n winds 15 to 20 kt. waves around 2 ft. snow and rain
likely in the morning, then a chance of snow in the afternoon. 
.mon night...n winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. waves around 2 ft. 
.tue through wed night...nw winds 15 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 210804
cwfbox
expires:202603212100;;047941

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

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


anz250-212100-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
404 am edt sat mar 21 2026

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

.today...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 2 ft at 4 seconds. 
.tonight...n winds around 10 kt, becoming ne after midnight. seas
2 to 4 ft. wave detail: e 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. gusts up to 25 kt. seas 2 to 4 ft. wave detail: s 4 ft
at 5 seconds and se 3 ft at 8 seconds. patchy fog. a chance of
rain and snow in the morning. rain likely in the afternoon. vsby
1 to 3 nm. 
.sun night...w winds 10 to 15 kt, becoming n 15 to 20 kt after
midnight. gusts up to 25 kt. seas 3 to 5 ft. wave detail: e 5 ft
at 8 seconds and sw 3 ft at 4 seconds. rain likely. patchy fog in
the evening with vsby 1 nm or less. 
.mon...n winds around 20 kt with gusts up to 25 kt. seas 5 to
7 ft. wave detail: n 7 ft at 6 seconds. a chance of snow. rain
likely in the morning. 
.mon night...n winds 15 to 20 kt with gusts up to 25 kt. seas
6 to 7 ft. wave detail: ne 7 ft at 8 seconds. 
.tue...n winds 15 to 20 kt. seas 5 to 7 ft. 
.tue night and wed...sw winds 20 to 25 kt. seas 3 to 5 ft. 
.wed night...nw winds 20 to 25 kt. seas 2 to 4 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.

$$