fzus51 kbox 212005
cwfbox
expires:202605220900;;417440

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

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


anz230-220900-
boston harbor-
404 pm edt thu may 21 2026

.tonight...se winds around 5 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, then around 2 ft in the afternoon. 
.fri night...se winds 5 to 10 kt, becoming s after midnight.
waves 1 foot or less. 
.sat...e winds 5 to 10 kt. waves 1 foot or less. 
.sat night through sun night...e winds 15 to 20 kt with gusts up
to 25 kt. waves 2 to 3 ft. showers.
.mon...n winds 5 to 10 kt. waves 1 foot or less. a chance of
showers. 
.mon night through tue night...sw winds 5 to 10 kt. waves 1 foot
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.

$$

fzus51 kbox 212005
cwfbox
expires:202605220900;;417441

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

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


anz236-220900-
narragansett bay-
404 pm edt thu may 21 2026

.tonight...s winds 5 to 10 kt, becoming n after midnight. waves
around 2 ft. 
.fri...ne winds 10 to 15 kt. waves around 2 ft. 
.fri night...e winds 5 to 10 kt, diminishing to around 5 kt after
midnight. waves around 2 ft. 
.sat...e winds 5 to 10 kt. waves around 2 ft. 
.sat night through sun night...ne winds 15 to 20 kt with gusts up
to 25 kt. waves 2 to 4 ft. showers.
.mon...nw winds 5 to 10 kt. waves 2 to 3 ft. a chance of showers.
.mon night through tue night...sw winds 5 to 10 kt. waves 2 to
3 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.

$$