fzus51 kbox 210503
cwfbox
expires:202605211800;;381459

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

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


anz230-211800-
boston harbor-
103 am edt thu may 21 2026

.rest of tonight...n winds around 10 kt. waves 1 foot or less. 
.thu...ne 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 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 210503
cwfbox
expires:202605211800;;381460

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

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


anz236-211800-
narragansett bay-
103 am edt thu may 21 2026

.rest of tonight...n winds 5 to 10 kt. waves around 2 ft. a
chance of showers. 
.thu...ne winds around 10 kt, becoming se in the afternoon. waves
around 2 ft. a chance of showers in the morning. 
.thu night...s winds 5 to 10 kt, becoming n after midnight. waves
around 2 ft. 
.fri...ne winds around 10 kt, becoming e in the afternoon. waves
around 2 ft. 
.fri night and sat...e winds 5 to 10 kt. waves around 2 ft. 
.sat night...e winds 10 to 15 kt. gusts up to 20 kt after
midnight. waves 2 to 3 ft. a chance of showers in the evening,
then showers likely after midnight. 
.sun and sun night...e winds 15 to 20 kt, diminishing to 10 to
15 kt. gusts up to 25 kt. waves 2 to 4 ft. showers.
.mon and mon night...nw winds 5 to 10 kt, becoming sw. waves 2 to
3 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.

$$