fzus51 kbox 180805
cwfbox
expires:202509182100;;180160

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 am edt thu sep 18 2025

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


anz230-182100-
boston harbor-
405 am edt thu sep 18 2025

.today...n winds 5 to 10 kt, becoming e this afternoon. waves
1 foot or less. patchy fog this morning. a chance of showers this
morning. 
.tonight...s winds 5 to 10 kt, becoming w after midnight. waves
1 foot or less. 
.fri...nw winds around 10 kt. waves around 2 ft. 
.fri night...n winds 10 to 15 kt. waves around 2 ft. 
.sat...ne winds 10 to 15 kt, becoming e 5 to 10 kt in the
afternoon. waves around 2 ft in the morning, then 1 foot or less.
.sat night...se winds 5 to 10 kt, becoming w after midnight.
waves 1 foot or less. 
.sun through mon night...sw winds 10 to 15 kt with gusts up to
20 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 180805
cwfbox
expires:202509182100;;180149

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 am edt thu sep 18 2025

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


anz250-182100-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
405 am edt thu sep 18 2025

.today...n winds 5 to 10 kt. seas 2 to 3 ft. wave detail: se 3 ft
at 8 seconds. patchy fog. a chance of showers with a slight
chance of tstms this morning with vsby 1 nm or less. 
.tonight...s winds 5 to 10 kt, becoming w after midnight. seas
2 to 3 ft. wave detail: se 3 ft at 7 seconds and sw 2 ft at
3 seconds. patchy fog in the evening with vsby 1 nm or less. 
.fri...nw winds 10 to 15 kt, becoming n 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 3 seconds. 
.fri night...n winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. gusts up to 25 kt. seas 2 to 4 ft. wave detail: n 4 ft
at 4 seconds and se 2 ft at 7 seconds. 
.sat...ne 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: n
4 ft at 5 seconds and se 2 ft at 8 seconds. 
.sat night...se winds 5 to 10 kt, becoming sw after midnight.
seas 2 to 3 ft. wave detail: n 2 ft at 5 seconds and se 1 foot at
8 seconds. 
.sun through mon night...sw winds 10 to 15 kt with gusts up to
20 kt. seas 2 to 4 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.

$$