fzus51 kbox 180505
cwfbox
expires:202604181800;;561007

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 am edt sat apr 18 2026

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


anz230-181800-
boston harbor-
104 am edt sat apr 18 2026

.rest of tonight...ne winds 5 to 10 kt. waves 1 foot or less.
areas of fog. vsby 1 nm or less. 
.sat...ne winds 10 to 15 kt. waves around 2 ft. areas of fog in
the morning with vsby 1 nm or less. 
.sat night...e winds 5 to 10 kt, becoming se after midnight.
waves 1 foot or less. a chance of. areas of fog in the evening,
then patchy fog after midnight. a chance of. vsby 1 to 3 nm. 
.sun...s winds 5 to 10 kt, becoming w 10 to 15 kt with gusts up
to 20 kt in the afternoon. waves 1 foot or less, then around 2 ft
in the afternoon. patchy fog. rain. snow likely in the afternoon.
vsby 1 to 3 nm in the morning. 
.sun night...nw winds 15 to 20 kt, becoming w 10 to 15 kt after
midnight. waves around 2 ft. patchy fog in the evening. rain and
snow likely in the evening. 
.mon and mon night...n winds 10 to 15 kt. waves around 2 ft. 
.tue through wed night...nw 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 180505
cwfbox
expires:202604181800;;560996

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
104 am edt sat apr 18 2026

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


anz250-181800-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
104 am edt sat apr 18 2026

.rest of tonight...ne winds 10 to 15 kt. seas 2 to 3 ft. wave
detail: n 2 ft at 4 seconds and se 2 ft at 8 seconds. areas of
fog. vsby 1 nm or less. 
.sat...ne winds 10 to 15 kt. gusts up to 20 kt in the morning.
seas 2 to 4 ft. wave detail: e 3 ft at 7 seconds and n 1 foot at
3 seconds. areas of fog. vsby 1 nm or less, increasing to 1 to
3 nm in the afternoon. 
.sat night...e winds 5 to 10 kt, becoming s after midnight. seas
3 to 4 ft. wave detail: e 4 ft at 8 seconds and n 1 foot at
3 seconds. areas of fog in the evening. patchy fog after
midnight. vsby 1 to 3 nm. 
.sun...s winds 5 to 10 kt, becoming sw 10 to 15 kt with gusts up
to 20 kt in the afternoon. seas 3 to 4 ft. wave detail: e 4 ft at
8 seconds and sw 2 ft at 4 seconds. patchy fog. a chance of rain
in the morning, then rain with snow likely in the afternoon. vsby
1 to 3 nm in the morning. 
.sun night...nw winds 15 to 20 kt with gusts up to 25 kt. seas
3 to 4 ft. wave detail: e 4 ft at 8 seconds and w 3 ft at
4 seconds. patchy fog in the evening. rain and snow likely in the
evening. 
.mon and mon night...n winds 15 to 20 kt. seas 2 to 4 ft. wave
detail: w 3 ft at 4 seconds and se 2 ft at 7 seconds. 
.tue through wed night...w winds 15 to 20 kt. seas 2 to 3 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.

$$