fzus51 kbox 180904
cwfbox
expires:202512182200;;787770

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
403 am est thu dec 18 2025

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


anz230-182200-
boston harbor-
403 am est thu dec 18 2025

...gale warning in effect from late tonight through saturday
morning...

.today...sw winds around 5 kt, becoming s 10 to 15 kt with gusts
up to 20 kt this afternoon. waves 1 foot or less, then around
2 ft this afternoon. 
.tonight...s winds 10 to 15 kt with gusts up to 20 kt, increasing
to 20 to 25 kt with gusts up to 30 kt after midnight. waves
around 2 ft. 
.fri...s winds 25 to 30 kt with gusts up to 40 kt. waves around
2 ft. rain. vsby 1 nm or less, increasing to 1 to 3 nm in the
afternoon. 
.fri night...w winds 25 to 30 kt with gusts up to 40 kt. waves
around 2 ft. a chance of rain in the evening. 
.sat...w winds 20 to 25 kt with gusts up to 30 kt, diminishing to
10 to 15 kt with gusts up to 20 kt in the afternoon. waves around
2 ft. 
.sat night...sw winds 15 to 20 kt with gusts up to 25 kt. waves
around 2 ft. 
.sun through mon night...nw winds 20 to 25 kt with gusts up to
30 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 180904
cwfbox
expires:202512182200;;787759

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
403 am est thu dec 18 2025

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


anz250-182200-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
403 am est thu dec 18 2025

...gale warning in effect from late tonight through saturday
morning...

.today...sw winds 5 to 10 kt, becoming s 15 to 20 kt with gusts
up to 25 kt this afternoon. seas 2 to 4 ft. wave detail: s 3 ft
at 4 seconds and se 1 foot at 10 seconds. 
.tonight...s winds 15 to 20 kt with gusts up to 25 kt, increasing
to 20 to 25 kt with gusts up to 35 kt after midnight. seas 3 to
5 ft, building to 5 to 7 ft after midnight. wave detail: s 4 ft
at 5 seconds and se 1 foot at 10 seconds, becoming s 6 ft at
5 seconds and se 1 foot at 11 seconds. a chance of rain after
midnight with vsby 1 nm or less. 
.fri...s winds 25 to 35 kt, increasing to 30 to 40 kt in the
afternoon. gusts up to 50 kt. seas 6 to 9 ft, building to 8 to
11 ft in the afternoon. wave detail: se 9 ft at 11 seconds and s
7 ft at 6 seconds, becoming se 11 ft at 9 seconds and s 7 ft at
7 seconds. rain. vsby 1 nm or less. 
.fri night...w winds 25 to 30 kt with gusts up to 40 kt. seas
8 to 11 ft. wave detail: se 9 ft at 10 seconds and w 8 ft at
6 seconds. a chance of rain in the evening. 
.sat...w winds 25 to 30 kt with gusts up to 35 kt, diminishing to
around 15 kt with gusts up to 20 kt in the afternoon. seas 6 to
9 ft, subsiding to 5 to 7 ft in the afternoon. wave detail: w
8 ft at 6 seconds and se 5 ft at 11 seconds, becoming w 5 ft at
6 seconds and se 4 ft at 11 seconds. 
.sat night...sw winds 15 to 20 kt, increasing to 20 to 25 kt
after midnight. gusts up to 30 kt. seas 4 to 6 ft. wave detail:
sw 5 ft at 5 seconds and se 3 ft at 11 seconds. 
.sun...w winds 20 to 25 kt with gusts up to 30 kt. seas 4 to
6 ft. 
.sun night and mon...nw winds 25 to 30 kt with gusts up to 35 kt.
seas 5 to 8 ft. 
.mon night...nw winds 15 to 20 kt with gusts up to 25 kt. seas
4 to 6 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.

$$