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coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 pm est wed jan 21 2026

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


anz230-220700-
boston harbor-
104 pm est wed jan 21 2026

.this afternoon...sw winds 10 to 15 kt with gusts up to 20 kt.
waves around 2 ft. 
.tonight...sw winds 15 to 20 kt. waves around 2 ft. snow likely
in the evening. a chance of snow after midnight with vsby 1 to
3 nm. 
.thu...sw winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. gusts up to 25 kt. waves around 2 ft. 
.thu night...w winds 10 to 15 kt. gusts up to 20 kt in the
evening. waves around 2 ft. 
.fri and fri night...nw winds 20 to 25 kt with gusts up to 30 kt.
waves around 2 ft. 
.sat and sat night...nw winds 20 to 25 kt, diminishing to 10 to
15 kt. waves around 2 ft. 
.sun and sun night...n winds 10 to 15 kt, increasing to 15 to
20 kt. waves around 2 ft. a chance of snow.  

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 211805
cwfbox
expires:202601220700;;280798

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 pm est wed jan 21 2026

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


anz250-220700-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
104 pm est wed jan 21 2026

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

.this afternoon...sw winds 15 to 20 kt with gusts up to 25 kt.
seas 2 to 4 ft. wave detail: sw 3 ft at 4 seconds and se 2 ft at
10 seconds. 
.tonight...sw winds 20 to 25 kt with gusts up to 30 kt. seas 3 to
5 ft. wave detail: sw 5 ft at 5 seconds and se 2 ft at
10 seconds. a chance of rain. a chance of snow in the evening
with vsby 1 to 3 nm. 
.thu...sw winds 15 to 20 kt with gusts up to 25 kt. seas 3 to
5 ft. wave detail: sw 5 ft at 5 seconds and se 2 ft at
11 seconds. 
.thu night...w winds 15 to 20 kt with gusts up to 25 kt. seas
3 to 5 ft. wave detail: w 4 ft at 5 seconds and se 2 ft at
11 seconds. 
.fri...w winds 15 to 20 kt, increasing to 20 to 25 kt in the
afternoon. gusts up to 30 kt. seas 3 to 5 ft. wave detail: w 5 ft
at 5 seconds and se 2 ft at 11 seconds. 
.fri night...nw winds 25 to 30 kt with gusts up to 35 kt. seas
5 to 8 ft. wave detail: w 7 ft at 5 seconds and se 1 foot at
11 seconds. heavy freezing spray. 
.sat...nw winds 25 to 30 kt. seas 5 to 7 ft. heavy freezing
spray. 
.sat night...nw winds 15 to 20 kt with gusts up to 25 kt. seas
3 to 5 ft. heavy freezing spray. 
.sun...n winds around 15 kt with gusts up to 20 kt. seas around
3 ft. a chance of snow. vsby 1 nm or less. 
.sun night...ne winds 15 to 20 kt. seas 3 to 4 ft. heavy freezing
spray. a chance of snow. vsby 1 nm or less.  

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.

$$