fzus51 kbox 202004
cwfbox
expires:202607210900;;306913

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 pm edt mon jul 20 2026

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


anz230-210900-
boston harbor-
404 pm edt mon jul 20 2026

.tonight...s winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. waves around 2 ft this
evening, then 1 foot or less. 
.tue...s winds 5 to 10 kt, becoming se 10 to 15 kt with gusts up
to 20 kt in the afternoon. waves 2 to 3 ft. 
.tue night...s winds 10 to 15 kt with gusts up to 20 kt. waves
2 to 3 ft. showers with a chance of tstms. 
.wed...sw winds 10 to 15 kt with gusts up to 20 kt. waves around
2 ft. showers likely. a chance of tstms in the morning. 
.wed night...sw winds 10 to 15 kt with gusts up to 20 kt,
becoming w 5 to 10 kt after midnight. waves around 2 ft in the
evening, then 1 foot or less. a chance of showers in the evening.
.thu and thu night...w winds 5 to 10 kt. waves 1 foot or less. 
.fri through sat night...s winds 5 to 10 kt. waves 1 foot or
less.  

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 202004
cwfbox
expires:202607210900;;306902

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
404 pm edt mon jul 20 2026

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


anz250-210900-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
404 pm edt mon jul 20 2026

...gale watch in effect from tuesday afternoon through wednesday
evening...

.tonight...s winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
3 ft. wave detail: s 2 ft at 4 seconds and se 2 ft at 8 seconds. 
.tue...s winds 10 to 15 kt with gusts up to 25 kt. seas 2 to
3 ft. wave detail: s 3 ft at 4 seconds and e 1 foot at
12 seconds. 
.tue night...s winds 15 to 20 kt with gusts up to 30 kt. seas
3 to 5 ft. wave detail: s 4 ft at 5 seconds and se 1 foot at
11 seconds. showers with a chance of tstms. 
.wed...s winds 15 to 20 kt with gusts up to 30 kt. seas 3 to
5 ft. wave detail: s 5 ft at 6 seconds and e 2 ft at 10 seconds.
showers likely with a chance of tstms in the morning, then a
chance of showers in the afternoon. 
.wed night...sw winds 15 to 20 kt with gusts up to 30 kt,
becoming w around 10 kt with gusts up to 20 kt after midnight.
seas 4 to 6 ft. wave detail: s 5 ft at 7 seconds and se 5 ft at
10 seconds. a chance of showers. 
.thu and thu night...w winds 5 to 10 kt. seas 2 to 4 ft. wave
detail: se 4 ft at 7 seconds and e 2 ft at 10 seconds. 
.fri through sat night...s winds around 5 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.

$$