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(1/2)
Latest Coastal Waters Forecast by KBOX
Issued 9/21/2026 4:03 PM America/New_York.
Valid through 9/22/2026 5:00 AM America/New_York.
fzus51 kbox 212003
cwfbox
expires:202609220900;;835040
coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
403 pm edt mon sep 21 2026
coastal waters from the merrimack river ma to watch hill ri out
to 60 nm
anz230-220900-
boston harbor-
403 pm edt mon sep 21 2026
.tonight...ne winds 5 to 10 kt, increasing to 15 to 20 kt after
midnight. waves 1 foot or less, then 2 to 3 ft after midnight.
.tue...ne winds 15 to 20 kt. waves 2 to 3 ft.
.tue night...ne winds 10 to 15 kt, increasing to 15 to 20 kt
after midnight. gusts up to 25 kt. waves 2 to 3 ft.
.wed...ne winds 15 to 20 kt with gusts up to 30 kt. waves 2 to
3 ft.
.wed night and thu...ne winds 20 to 25 kt with gusts up to 30 kt.
waves 2 to 3 ft, except 4 to 6 ft at the outer harbor entrance.
.thu night...ne winds 15 to 20 kt, increasing to 25 to 30 kt
after midnight. waves 2 to 3 ft, except 4 to 6 ft at the outer
harbor entrance. a chance of showers after midnight.
.fri and fri night...ne winds 25 to 30 kt with gusts up to 45 kt.
waves 2 to 3 ft, except 5 to 7 ft at the outer harbor entrance.
showers likely.
.sat and sat night...n winds 25 to 30 kt with gusts up to 40 kt.
waves around 2 ft, except 5 to 7 ft at the outer harbor entrance.
showers likely.
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.
$$
(2/2)
Latest Coastal Waters Forecast by KBOX
Issued 9/21/2026 4:03 PM America/New_York.
Valid through 9/22/2026 5:00 AM America/New_York.
fzus51 kbox 212003
cwfbox
expires:202609220900;;835029
coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
403 pm edt mon sep 21 2026
coastal waters from the merrimack river ma to watch hill ri out
to 60 nm
anz250-220900-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
403 pm edt mon sep 21 2026
.tonight...ne winds 5 to 10 kt, increasing to 15 to 20 kt with
gusts up to 25 kt after midnight. seas 2 to 4 ft. wave detail: ne
4 ft at 6 seconds and se 2 ft at 9 seconds.
.tue...ne winds 15 to 20 kt with gusts up to 25 kt. seas 4 to
5 ft. wave detail: n 5 ft at 5 seconds and se 1 foot at
15 seconds.
.tue night...ne winds 10 to 15 kt, increasing to 15 to 20 kt
after midnight. gusts up to 25 kt. seas 4 to 5 ft. wave detail: n
5 ft at 6 seconds and s 1 foot at 14 seconds.
.wed...ne winds 15 to 20 kt with gusts up to 30 kt. seas 5 to
8 ft. wave detail: e 8 ft at 10 seconds and e 7 ft at 7 seconds.
.wed night and thu...ne winds 20 to 25 kt with gusts up to 30 kt.
seas 6 to 9 ft. wave detail: e 9 ft at 10 seconds and ne 8 ft at
7 seconds.
.thu night...ne winds 20 to 25 kt, increasing to 25 to 30 kt
after midnight. gusts up to 40 kt. seas 8 to 11 ft. wave detail:
e 11 ft at 12 seconds and n 9 ft at 6 seconds. a chance of
showers after midnight.
.fri...ne winds 30 to 40 kt with gusts up to 50 kt. seas 10 to
14 ft. a chance of showers.
.fri night and sat...ne winds 30 to 35 kt with gusts up to 50 kt.
seas 12 to 15 ft. showers likely.
.sat night...ne winds 25 to 30 kt with gusts up to 45 kt. seas
9 to 13 ft. showers likely.
seas are reported as significant wave height, which is the
average of the highest third of the waves. individual wave
heights may be more than twice the significant wave height.
$$
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