fzus51 kbox 211405
cwfbox
expires:202605220300;;403061

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1005 am edt thu may 21 2026

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


anz230-220300-
boston harbor-
1005 am edt thu may 21 2026

.this afternoon...ne winds 5 to 10 kt, becoming e. waves 1 foot
or less. a slight chance of showers. 
.tonight...s winds 5 to 10 kt, becoming n after midnight. waves
1 foot or less. 
.fri...ne winds around 10 kt, becoming e in the afternoon. waves
1 foot or less. 
.fri night...se winds 5 to 10 kt, becoming sw after midnight.
waves 1 foot or less. 
.sat...ne winds 5 to 10 kt, becoming e in the afternoon. waves
1 foot or less. 
.sat night...se winds 5 to 10 kt. waves 1 foot or less, then
around 2 ft after midnight. showers likely after midnight. 
.sun and sun night...e winds 10 to 15 kt with gusts up to 20 kt.
waves 2 to 3 ft. showers.
.mon and mon night...ne winds 5 to 10 kt, becoming sw. waves
1 foot or less. a chance of showers.  

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 211405
cwfbox
expires:202605220300;;403050

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1005 am edt thu may 21 2026

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


anz250-220300-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
1005 am edt thu may 21 2026

.this afternoon...ne winds around 10 kt with gusts up to 20 kt,
becoming e. seas 2 to 3 ft. wave detail: nw 2 ft at 4 seconds and
se 2 ft at 9 seconds. a slight chance of showers. 
.tonight...s winds around 5 kt, becoming n after midnight. seas
around 2 ft. wave detail: w 1 foot at 3 seconds and ne 1 foot at
5 seconds. 
.fri...ne winds around 10 kt, becoming e in the afternoon. seas
around 2 ft. wave detail: n 2 ft at 3 seconds and se 1 foot at
9 seconds. 
.fri night...s winds around 5 kt, becoming w around 5 kt after
midnight. seas around 2 ft. wave detail: n 2 ft at 4 seconds and
se 1 foot at 10 seconds. 
.sat...e winds around 5 kt. seas 1 foot or less. wave detail: w
1 foot at 2 seconds and ne 1 foot at 3 seconds. 
.sat night...se winds 5 to 10 kt. seas 1 foot or less, then
around 2 ft after midnight. wave detail: nw 1 foot at 2 seconds
and e 1 foot at 3 seconds, becoming se 2 ft at 10 seconds and ne
1 foot at 3 seconds. a chance of showers after midnight. 
.sun and sun night...e winds 15 to 20 kt with gusts up to 25 kt.
seas 2 to 4 ft. showers likely. 
.mon and mon night...ne winds 5 to 10 kt with gusts up to 20 kt,
becoming w. seas 3 to 5 ft. a chance of showers.  

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.

$$