fzus51 kbox 191705
cwfbox
expires:202604200600;;644071

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 pm edt sun apr 19 2026

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


anz230-200600-
boston harbor-
104 pm edt sun apr 19 2026

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

.this afternoon...nw winds 15 to 20 kt with gusts up to 30 kt.
waves around 2 ft. patchy fog. rain with a slight chance of
tstms. vsby 1 to 3 nm. 
.tonight...nw winds 15 to 20 kt with gusts up to 30 kt, becoming
w 10 to 15 kt with gusts up to 20 kt after midnight. waves around
2 ft. a chance of rain in the evening. 
.mon...w winds 5 to 10 kt. waves 1 foot or less. a chance of rain
in the afternoon. 
.mon night...n winds 5 to 10 kt, increasing to 10 to 15 kt after
midnight. waves 1 foot or less, then around 2 ft after midnight. 
.tue...n winds 5 to 10 kt, becoming e in the afternoon. waves
around 2 ft in the morning, then 1 foot or less. 
.tue night...s winds 10 to 15 kt. waves around 2 ft in the
evening, then 1 foot or less. 
.wed through thu night...n winds 5 to 10 kt. waves around 2 ft.  

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 191705
cwfbox
expires:202604200600;;644060

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 pm edt sun apr 19 2026

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


anz250-200600-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
104 pm edt sun apr 19 2026

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

.this afternoon...w winds 20 to 25 kt with gusts up to 30 kt.
seas 3 to 4 ft. wave detail: se 4 ft at 7 seconds and sw 1 foot
at 3 seconds. patchy fog. rain with a slight chance of tstms.
vsby 1 nm or less. 
.tonight...nw winds 20 to 25 kt, becoming w 15 to 20 kt after
midnight. gusts up to 30 kt. seas 3 to 4 ft. wave detail: se 4 ft
at 7 seconds and nw 3 ft at 4 seconds. patchy fog in the evening.
a chance of rain in the evening with vsby 1 to 3 nm. 
.mon...w winds 10 to 15 kt, becoming sw 5 to 10 kt in the
afternoon. seas 2 to 3 ft. wave detail: se 3 ft at 7 seconds and
w 2 ft at 4 seconds. 
.mon night...nw winds 10 to 15 kt, becoming n 15 to 20 kt after
midnight. seas 2 to 4 ft. wave detail: n 3 ft at 4 seconds and ne
3 ft at 8 seconds. 
.tue...n winds 10 to 15 kt with gusts up to 20 kt, becoming e
5 to 10 kt in the afternoon. seas 2 to 4 ft. wave detail: n 4 ft
at 5 seconds and se 1 foot at 7 seconds. 
.tue night...s winds 10 to 15 kt. seas 2 to 3 ft. wave detail: s
2 ft at 4 seconds and ne 2 ft at 6 seconds. 
.wed through thu night...n winds 10 to 15 kt. seas 2 to 3 ft.  

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.

$$