fzus51 kbox 182304
cwfbox
expires:202603191200;;923189

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
704 pm edt wed mar 18 2026

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


anz230-191200-
boston harbor-
704 pm edt wed mar 18 2026

.tonight...s winds 5 to 10 kt. waves around 2 ft. 
.thu...se winds 5 to 10 kt. waves around 2 ft in the morning,
then 1 foot or less. 
.thu night...s winds around 10 kt. waves 1 foot or less. 
.fri...sw winds 5 to 10 kt, becoming s in the afternoon. waves
1 foot or less. 
.fri night and sat...sw winds 10 to 15 kt with gusts up to 20 kt.
waves around 2 ft. a chance of rain in the evening, then rain
likely through the day. a chance of rain in the afternoon. 
.sat night...sw winds 15 to 20 kt. waves around 2 ft. 
.sun and sun night...w winds 15 to 20 kt, becoming n 20 to 25 kt.
waves around 2 ft. a chance of rain. 
.mon and mon night...n winds 20 to 25 kt, diminishing to 15 to
20 kt. waves around 2 ft, except 3 to 5 ft at the outer harbor
entrance.  

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 182304
cwfbox
expires:202603191200;;923180

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
704 pm edt wed mar 18 2026

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


anz231-191200-
cape cod bay-
704 pm edt wed mar 18 2026

.tonight...se winds around 5 kt. seas around 2 ft. wave detail:
nw 2 ft at 5 seconds and e 2 ft at 8 seconds. 
.thu...se winds 5 to 10 kt. seas around 2 ft. wave detail: e 2 ft
at 6 seconds and n 1 foot at 4 seconds. 
.thu night...s winds 5 to 10 kt. seas around 2 ft. wave detail:
se 2 ft at 9 seconds and se 1 foot at 2 seconds. 
.fri...sw winds 5 to 10 kt. seas around 2 ft. wave detail: se
2 ft at 8 seconds and sw 1 foot at 2 seconds. 
.fri night and sat...sw winds 10 to 15 kt with gusts up to 20 kt.
seas 2 to 3 ft. wave detail: s 2 ft at 3 seconds and e 2 ft at
9 seconds. a chance of rain. 
.sat night...sw winds 10 to 15 kt with gusts up to 20 kt. seas
2 to 3 ft. wave detail: e 2 ft at 9 seconds and sw 1 foot at
3 seconds. 
.sun...sw winds 15 to 20 kt. seas 2 to 3 ft. a chance of rain. 
.sun night...nw winds 20 to 25 kt. seas 2 to 4 ft. a chance of
rain and snow. 
.mon and mon night...n winds 20 to 25 kt, diminishing to 15 to
20 kt. seas 3 to 4 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 182304
cwfbox
expires:202603191200;;923178

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
704 pm edt wed mar 18 2026

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


anz250-191200-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
704 pm edt wed mar 18 2026

.tonight...s winds 5 to 10 kt. seas 3 to 4 ft. wave detail: se
4 ft at 10 seconds and nw 2 ft at 4 seconds. 
.thu...se winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. seas 3 to 4 ft. wave detail: se 4 ft at 10 seconds and
s 2 ft at 3 seconds. 
.thu night...s winds 10 to 15 kt. seas 2 to 4 ft. wave detail: se
3 ft at 9 seconds and s 2 ft at 3 seconds. 
.fri...sw winds 5 to 10 kt. seas 2 to 4 ft. wave detail: se 3 ft
at 8 seconds and sw 2 ft at 3 seconds. 
.fri night...s winds 10 to 15 kt with gusts up to 20 kt. seas
3 to 5 ft. wave detail: e 4 ft at 9 seconds and s 3 ft at
4 seconds. rain likely after midnight. 
.sat...s winds 15 to 20 kt with gusts up to 25 kt. seas 3 to
5 ft. wave detail: s 4 ft at 4 seconds and e 4 ft at 9 seconds. a
chance of rain. 
.sat night...sw winds 15 to 20 kt with gusts up to 25 kt. seas
3 to 5 ft. 
.sun and sun night...sw winds 15 to 20 kt, becoming nw 20 to
25 kt. gusts up to 30 kt. seas 3 to 5 ft. a chance of rain. 
.mon and mon night...n winds 20 to 25 kt with gusts up to 30 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.

$$

fzus51 kgyx 182312
cwfgyx
expires:202603191315;;923966

coastal waters forecast
national weather service gray me
712 pm edt wed mar 18 2026

coastal waters from stonington me to merrimack river ma out to 25 nm


anz154-191315-
coastal waters from cape elizabeth, me to merrimack river, ma out
25 nm-
712 pm edt wed mar 18 2026

...small craft advisory in effect through thursday morning...

.tonight...s winds 5 to 10 kt. seas 4 to 5 ft. wave detail: se 5 ft
at 10 seconds and s 2 ft at 3 seconds. a slight chance of snow
showers towards daybreak. 
.thu...s winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up
to 20 kt in the afternoon. seas around 4 ft. wave detail: se 4 ft at
10 seconds and s 2 ft at 4 seconds. 
.thu night...s winds 10 to 15 kt with gusts up to 20 kt. seas 3 to
4 ft. wave detail: se 4 ft at 9 seconds and s 3 ft at 4 seconds. 
.fri...sw winds 10 to 15 kt, becoming s 5 to 10 kt in the afternoon.
seas 3 to 4 ft. wave detail: s 3 ft at 4 seconds and se 3 ft at
9 seconds. 
.fri night...s winds 10 to 15 kt with gusts up to 25 kt. seas 3 to
5 ft. wave detail: s 3 ft at 4 seconds and se 3 ft at 9 seconds. a
chance of showers in the evening, then showers likely after
midnight. 
.sat...s winds 15 to 20 kt with gusts up to 25 kt. seas 4 to 6 ft.
wave detail: s 5 ft at 6 seconds and e 4 ft at 9 seconds. showers
likely, mainly in the morning. 
.sat night...sw winds 15 to 20 kt with gusts up to 30 kt. seas 4 to
6 ft. 
.sun...sw winds 15 to 20 kt with gusts up to 30 kt. seas 3 to 5 ft.
a chance of rain. 
.sun night...nw winds 15 to 20 kt, becoming n 20 to 25 kt after
midnight. gusts up to 35 kt. seas 4 to 6 ft. a chance of rain in the
evening. 
.mon...n winds 20 to 25 kt, diminishing to 15 to 20 kt in the
afternoon. gusts up to 35 kt. seas 4 to 6 ft. 
.mon night...n winds 15 to 20 kt with gusts up to 30 kt. seas 5 to
7 ft.  

$$