fzus51 kbox 191807
cwfbox
expires:202512200700;;871374

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
107 pm est fri dec 19 2025

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


anz237-200700-
block island sound-
107 pm est fri dec 19 2025

...gale warning in effect through saturday morning...

.this afternoon...sw winds 25 to 35 kt with gusts up to 45 kt.
seas 9 to 13 ft. wave detail: s 12 ft at 9 seconds and w 4 ft at
5 seconds. patchy fog. rain likely. vsby 1 nm or less. 
.tonight...w winds 30 to 35 kt, diminishing to 25 to 30 kt after
midnight. gusts up to 45 kt. seas 9 to 13 ft, subsiding to 8 to
11 ft after midnight. wave detail: s 12 ft at 11 seconds and w
7 ft at 7 seconds, becoming s 10 ft at 11 seconds and w 6 ft at
7 seconds. 
.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. seas 6 to
9 ft, subsiding to 4 to 6 ft in the afternoon. wave detail: s
8 ft at 11 seconds and w 5 ft at 6 seconds, becoming s 6 ft at
11 seconds and w 3 ft at 4 seconds. 
.sat night...sw 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: s 4 ft at 10 seconds and
sw 3 ft at 4 seconds, becoming sw 6 ft at 6 seconds and s 3 ft at
10 seconds. 
.sun...w winds 20 to 25 kt with gusts up to 30 kt. seas 5 to
7 ft. wave detail: s 6 ft at 8 seconds and w 4 ft at 5 seconds. 
.sun night...nw winds 20 to 25 kt with gusts up to 30 kt. seas
4 to 6 ft. wave detail: w 4 ft at 5 seconds and s 4 ft at
8 seconds. 
.mon...nw winds 20 to 25 kt with gusts up to 30 kt. seas 3 to
5 ft. 
.mon night...w winds 10 to 15 kt. seas 2 to 3 ft. a chance of
snow. 
.tue...sw winds 20 to 25 kt with gusts up to 30 kt. seas 3 to
5 ft. rain with a chance of snow. vsby 1 to 3 nm. 
.tue night...w winds 20 to 25 kt with gusts up to 30 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.

$$

fzus51 kbox 191807
cwfbox
expires:202512200700;;871368

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
107 pm est fri dec 19 2025

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


anz255-200700-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
107 pm est fri dec 19 2025

...storm warning in effect until 4 pm est this afternoon...

.this afternoon...s winds 35 to 40 kt with gusts up to 50 kt.
seas 12 to 16 ft. wave detail: s 16 ft at 9 seconds and sw 1 foot
at 4 seconds. patchy fog. rain with isolated tstms. vsby 1 nm or
less. 
.tonight...w winds 30 to 40 kt with gusts up to 45 kt. seas 12 to
17 ft. wave detail: sw 17 ft at 11 seconds and w 12 ft at
9 seconds. 
.sat...w winds 25 to 30 kt with gusts up to 40 kt, diminishing to
15 to 20 kt in the afternoon. seas 9 to 13 ft, subsiding to 6 to
9 ft in the afternoon. wave detail: sw 13 ft at 11 seconds and w
9 ft at 9 seconds, becoming sw 9 ft at 10 seconds and w 5 ft at
9 seconds. 
.sat night...sw winds 20 to 25 kt, increasing to 25 to 30 kt with
gusts up to 35 kt after midnight. seas 4 to 6 ft, building to
6 to 9 ft after midnight. wave detail: s 6 ft at 10 seconds and
sw 5 ft at 9 seconds, becoming sw 9 ft at 7 seconds and se 4 ft
at 10 seconds. 
.sun and sun night...nw winds 25 to 30 kt with gusts up to 35 kt.
seas 7 to 10 ft. wave detail: sw 10 ft at 8 seconds and nw 4 ft
at 5 seconds. 
.mon...nw winds 25 to 30 kt. seas 5 to 7 ft. wave detail: nw 7 ft
at 6 seconds and se 2 ft at 10 seconds. 
.mon night...nw winds 15 to 20 kt. seas 3 to 5 ft.
.tue...sw winds 25 to 30 kt. seas 4 to 6 ft. rain. vsby 1 to
3 nm. 
.tue night...w winds 25 to 35 kt. seas 6 to 9 ft. rain likely.  

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.

$$