fzus51 kbox 201704
cwfbox
expires:202605210600;;354086

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 pm edt wed may 20 2026

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


anz230-210600-
boston harbor-
103 pm edt wed may 20 2026

...small craft advisory in effect until 8 pm edt this evening...

.this afternoon...w winds 10 to 15 kt with gusts up to 25 kt.
waves around 2 ft. a chance of showers with a slight chance of
tstms. 
.tonight...w winds 10 to 15 kt with gusts up to 20 kt, becoming
nw after midnight. waves around 2 ft in the evening, then 1 foot
or less. 
.thu...n winds 5 to 10 kt, becoming e in the afternoon. waves
1 foot or less. 
.thu night...s winds 5 to 10 kt, becoming n after midnight. waves
1 foot or less. 
.fri...ne winds 5 to 10 kt, becoming se in the afternoon. waves
1 foot or less. 
.fri night...s winds 5 to 10 kt, becoming sw after midnight.
waves 1 foot or less. 
.sat through sun night...e winds 10 to 15 kt with gusts up to
20 kt. waves around 2 ft. a chance of showers.  

winds and waves higher in and near tstms.

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 201704
cwfbox
expires:202605210600;;354075

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
103 pm edt wed may 20 2026

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


anz250-210600-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
103 pm edt wed may 20 2026

.this afternoon...w winds 10 to 15 kt with gusts up to 20 kt.
seas 2 to 3 ft. wave detail: w 2 ft at 3 seconds and se 2 ft at
9 seconds. a slight chance of showers and tstms. 
.tonight...w winds 10 to 15 kt, becoming n after midnight. gusts
up to 20 kt. seas 2 to 3 ft. wave detail: w 2 ft at 4 seconds and
se 2 ft at 9 seconds. 
.thu...n winds around 10 kt with gusts up to 20 kt, becoming e in
the afternoon. seas 2 to 3 ft. wave detail: ne 3 ft at 8 seconds
and nw 2 ft at 3 seconds. 
.thu night...s winds around 5 kt, becoming n after midnight. seas
around 2 ft. wave detail: ne 2 ft at 7 seconds and w 1 foot at
3 seconds. 
.fri...n winds 5 to 10 kt, becoming se in the afternoon. seas
around 2 ft. wave detail: ne 2 ft at 7 seconds and w 1 foot at
3 seconds. 
.fri night...sw winds 5 to 10 kt. seas around 2 ft. wave detail:
e 2 ft at 8 seconds and s 1 foot at 3 seconds. 
.sat through sun...e winds 10 to 15 kt with gusts up to 20 kt.
seas around 2 ft. a chance of showers. 
.sun night...e winds 10 to 15 kt with gusts up to 20 kt. seas
3 to 5 ft. a chance of showers.  

winds and seas higher in and near tstms.

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.

$$