fzus51 kbox 181405
cwfbox
expires:202604190300;;583000

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1005 am edt sat apr 18 2026

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


anz230-190300-
boston harbor-
1005 am edt sat apr 18 2026

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

$$

fzus51 kbox 181405
cwfbox
expires:202604190300;;582989

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
1005 am edt sat apr 18 2026

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


anz250-190300-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
1005 am edt sat apr 18 2026

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

$$