fzus51 kbox 182107
cwfbox
expires:202512191000;;819148

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

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


anz230-191000-
boston harbor-
406 pm est thu dec 18 2025

...storm warning in effect from friday morning through friday
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. a chance of rain after midnight. 
.fri...s winds 25 to 30 kt with gusts up to 45 kt. waves around
2 ft. rain. vsby 1 nm or less. 
.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 and sun night...nw winds 20 to 25 kt with gusts up to 30 kt.
waves around 2 ft. 
.mon and mon night...nw winds 20 to 25 kt with gusts up to 30 kt,
becoming w 10 to 15 kt with gusts up to 20 kt. waves around 2 ft.
.tue...sw winds 10 to 15 kt with gusts up to 20 kt. waves around
2 ft. snow likely with a chance of rain. vsby 1 to 3 nm. 
.tue night...w winds 15 to 20 kt. waves around 2 ft. a chance of
rain.  

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 182107
cwfbox
expires:202512191000;;819137

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

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


anz250-191000-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
406 pm est thu dec 18 2025

...storm warning in effect from friday morning through friday
afternoon...

.tonight...s winds 15 to 20 kt, increasing to 20 to 25 kt after
midnight. gusts up to 30 kt. seas 3 to 5 ft, building to 5 to
7 ft after midnight. wave detail: se 4 ft at 5 seconds and w
1 foot at 4 seconds, becoming s 6 ft at 5 seconds and se 1 foot
at 11 seconds. a chance of rain after midnight. 
.fri...s winds 30 to 40 kt with gusts up to 55 kt. seas 6 to
9 ft, building to 8 to 11 ft in the afternoon. wave detail: se
9 ft at 6 seconds and se 1 foot at 11 seconds, becoming s 11 ft
at 7 seconds and se 11 ft at 9 seconds. rain. vsby 1 nm or less. 
.fri night...w winds 25 to 30 kt with gusts up to 45 kt. seas
8 to 11 ft. wave detail: se 9 ft at 10 seconds and sw 8 ft at
7 seconds. a chance of rain in the evening. 
.sat...w winds 25 to 30 kt with gusts up to 35 kt, diminishing to
15 to 20 kt with gusts up to 25 kt in the afternoon. seas 6 to
9 ft, subsiding to 5 to 7 ft in the afternoon. wave detail: w
8 ft at 7 seconds and se 5 ft at 11 seconds, becoming w 6 ft at
7 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 6 ft at 5 seconds and se 4 ft at 11 seconds. 
.sun...w winds 20 to 25 kt with gusts up to 30 kt. seas 4 to
6 ft. wave detail: sw 6 ft at 6 seconds and se 4 ft at
10 seconds. 
.sun night...nw winds 25 to 30 kt. seas 5 to 8 ft.
.mon...nw winds 25 to 30 kt. seas 5 to 8 ft. 
.mon night...nw winds 15 to 20 kt with gusts up to 30 kt. seas
4 to 6 ft. 
.tue...sw winds 15 to 20 kt with gusts up to 25 kt. seas 3 to
4 ft. rain likely with a chance of snow. vsby 1 to 3 nm. 
.tue night...w winds around 20 kt with gusts up to 25 kt. seas
3 to 5 ft. a chance of rain.  

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.

$$