437
FZUS51 KBOX 251704
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
103 PM EDT Wed Sep 25 2024

Coastal waters from the Merrimack River MA to Watch Hill RI out
to 25 NM

ANZ200-260600-
103 PM EDT Wed Sep 25 2024

.Synopsis for Massachusetts and Rhode Island coastal waters...
High pres moves offshore tonight. A warm front will cross the waters
Thu followed by a cold front Thu night. High pres builds across New
Eng and the waters from Fri through next Mon.

$$

ANZ250-260600-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
103 PM EDT Wed Sep 25 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING...

.THIS AFTERNOON...E winds around 10 kt. Seas 5 to 6 ft. Wave
Detail: E 6 ft at 10 seconds.
.TONIGHT...SE winds around 10 kt. Seas 5 to 6 ft. Wave Detail: E
6 ft at 11 seconds.
.THU...SE winds 10 to 15 kt, becoming S 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas 5 to 6 ft. Wave Detail: E 6 ft
at 11 seconds and S 2 ft at 4 seconds.
.THU NIGHT...S winds 15 to 20 kt, becoming W around 10 kt after
midnight. Seas 4 to 6 ft. Wave Detail: E 6 ft at 11 seconds and S
2 ft at 4 seconds. Showers likely in the evening. A chance of
showers after midnight. Vsby 1 to 3 NM in the evening.
.FRI AND FRI NIGHT...N winds 5 to 10 kt. Seas 3 to 5 ft. Wave
Detail: E 5 ft at 10 seconds and N 1 foot at 3 seconds.
.SAT THROUGH SUN NIGHT...NE winds 5 to 10 kt. Seas 3 to 4 ft.
Wave Detail: NE 3 ft at 6 seconds and E 3 ft at 10 seconds.

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.

$$

ANZ251-260600-
Massachusetts Bay and Ipswich Bay-
103 PM EDT Wed Sep 25 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING...

.THIS AFTERNOON...E winds around 10 kt. Seas 4 to 5 ft. Wave
Detail: E 5 ft at 10 seconds.
.TONIGHT...SE winds 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: E
5 ft at 11 seconds.
.THU...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
6 ft. Wave Detail: E 6 ft at 11 seconds and SE 2 ft at 4 seconds.
A chance of showers in the afternoon.
.THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt,
becoming W 5 to 10 kt after midnight. Seas 3 to 5 ft. Wave
Detail: E 5 ft at 11 seconds and S 2 ft at 4 seconds. Showers
likely in the evening. A chance of showers after midnight. Vsby
1 to 3 NM in the evening.
.FRI AND FRI NIGHT...N winds 5 to 10 kt. Seas 2 to 4 ft. Wave
Detail: E 4 ft at 11 seconds and N 1 foot at 3 seconds.
.SAT THROUGH SUN NIGHT...NE winds 5 to 10 kt. Seas 2 to 3 ft.
Wave Detail: E 3 ft at 6 seconds and E 3 ft at 10 seconds.

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.

$$

ANZ231-260600-
Cape Cod Bay-
103 PM EDT Wed Sep 25 2024

.THIS AFTERNOON...E winds around 10 kt. Seas around 3 ft. Wave
Detail: E 3 ft at 10 seconds and E 1 foot at 3 seconds.
.TONIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 11 seconds and E 1 foot at 2 seconds.
.THU...SE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 2 to 4 ft. Wave Detail: E 4 ft at 11 seconds and SE 2 ft at
3 seconds.
.THU NIGHT...S winds 10 to 15 kt with gusts up to 20 kt, becoming
W 5 to 10 kt after midnight. Seas 2 to 4 ft. Wave Detail: E 4 ft
at 11 seconds and SE 2 ft at 3 seconds. A chance of showers. Vsby
1 to 3 NM in the evening.
.FRI AND FRI NIGHT...N winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: E 3 ft at 11 seconds and NW 1 foot at 2 seconds.
.SAT THROUGH SUN NIGHT...NE winds 5 to 10 kt. Seas 2 to 3 ft.
Wave Detail: E 2 ft at 10 seconds and N 1 foot at 3 seconds.

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.

$$

ANZ254-260600-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
103 PM EDT Wed Sep 25 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING...

.THIS AFTERNOON...E winds around 10 kt with gusts up to 20 kt.
Seas 5 to 6 ft. Wave Detail: E 6 ft at 11 seconds.
.TONIGHT...E winds 5 to 10 kt. Gusts up to 20 kt in the evening.
Seas 5 to 7 ft. Wave Detail: E 7 ft at 12 seconds.
.THU...SE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 5 to 7 ft. Wave Detail: E 7 ft at 12 seconds and S 1 foot at
3 seconds.
.THU NIGHT...S winds 10 to 15 kt, becoming SW after midnight.
Gusts up to 20 kt. Seas 4 to 6 ft. Wave Detail: E 6 ft at
11 seconds and SW 2 ft at 4 seconds. A chance of showers. Vsby
1 to 3 NM.
.FRI...NW winds 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: E 5 ft
at 11 seconds and SW 2 ft at 4 seconds. A chance of showers in
the morning.
.FRI NIGHT...NW winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E
4 ft at 10 seconds and SW 1 foot at 3 seconds.
.SAT THROUGH SUN NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 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.

$$

ANZ255-260600-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
103 PM EDT Wed Sep 25 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING...

.THIS AFTERNOON...E winds around 10 kt with gusts up to 20 kt.
Seas 4 to 6 ft. Wave Detail: E 5 ft at 10 seconds and E 1 foot at
3 seconds.
.TONIGHT...E winds around 10 kt. Gusts up to 20 kt in the
evening. Seas 4 to 6 ft. Wave Detail: E 5 ft at 11 seconds and E
1 foot at 2 seconds.
.THU...SE winds 10 to 15 kt. Seas 4 to 6 ft. Wave Detail: E 5 ft
at 11 seconds and S 2 ft at 4 seconds.
.THU NIGHT...SW winds 10 to 15 kt. Seas 3 to 5 ft. Wave Detail: E
5 ft at 11 seconds and S 3 ft at 4 seconds. A chance of showers.
.FRI...W winds 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: E 4 ft at
11 seconds and SW 2 ft at 4 seconds. A chance of showers in the
morning.
.FRI NIGHT...NW winds 5 to 10 kt, becoming N after midnight. Seas
2 to 4 ft. Wave Detail: E 4 ft at 10 seconds and SW 1 foot at
4 seconds.
.SAT THROUGH SUN NIGHT...NE winds 10 to 15 kt. Seas 2 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.

$$

ANZ256-260600-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
103 PM EDT Wed Sep 25 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING...

.THIS AFTERNOON...E winds 10 to 15 kt with gusts up to 20 kt.
Seas 4 to 5 ft. Wave Detail: E 5 ft at 10 seconds.
.TONIGHT...E winds 10 to 15 kt. Gusts up to 20 kt in the evening.
Seas 4 to 5 ft. Wave Detail: E 5 ft at 10 seconds.
.THU...SE winds 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: E 5 ft
at 12 seconds and S 2 ft at 4 seconds.
.THU NIGHT...S winds 10 to 15 kt with gusts up to 20 kt, becoming
W after midnight. Seas 3 to 5 ft. Wave Detail: E 5 ft at
11 seconds and S 3 ft at 4 seconds. A chance of showers.
.FRI...NW winds 5 to 10 kt, becoming W in the afternoon. Seas
2 to 4 ft. Wave Detail: E 4 ft at 11 seconds and SW 2 ft at
5 seconds. A chance of showers in the morning.
.FRI NIGHT...W winds 5 to 10 kt, becoming NE after midnight. Seas
2 to 3 ft. Wave Detail: E 3 ft at 10 seconds.
.SAT THROUGH SUN NIGHT...NE winds 10 to 15 kt with gusts up to
20 kt. Seas 2 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.

$$

ANZ232-260600-
Nantucket Sound-
103 PM EDT Wed Sep 25 2024

.THIS AFTERNOON...E winds around 10 kt with gusts up to 20 kt.
Seas 2 to 4 ft. Wave Detail: E 3 ft at 10 seconds and E 2 ft at
3 seconds.
.TONIGHT...SE winds around 10 kt. Gusts up to 20 kt in the
evening. Seas 2 to 4 ft. Wave Detail: E 3 ft at 11 seconds and E
2 ft at 3 seconds.
.THU...SE winds 10 to 15 kt. Seas 2 to 4 ft. Wave Detail: E 3 ft
at 12 seconds and SE 2 ft at 3 seconds.
.THU NIGHT...S winds 10 to 15 kt with gusts up to 20 kt, becoming
SW after midnight. Seas 2 to 4 ft. Wave Detail: E 3 ft at
12 seconds and S 2 ft at 4 seconds. A chance of showers in the
evening. Showers likely after midnight. Vsby 1 to 3 NM in the
evening.
.FRI...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft
at 3 seconds and E 2 ft at 11 seconds. A chance of showers in the
morning.
.FRI NIGHT...SW winds 5 to 10 kt, becoming N after midnight. Seas
around 2 ft. Wave Detail: E 2 ft at 10 seconds and N 1 foot at
2 seconds.
.SAT THROUGH SUN NIGHT...NE winds 10 to 15 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.

$$

ANZ233-260600-
Vineyard Sound-
103 PM EDT Wed Sep 25 2024

.THIS AFTERNOON...E winds around 10 kt. Seas around 2 ft. Wave
Detail: E 2 ft at 10 seconds and E 1 foot at 2 seconds.
.TONIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E
2 ft at 11 seconds and E 1 foot at 2 seconds.
.THU...SE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft
at 3 seconds and SE 2 ft at 11 seconds.
.THU NIGHT...S winds 10 to 15 kt, becoming SW 5 to 10 kt after
midnight. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and SE
2 ft at 11 seconds. A chance of showers in the evening. Showers
likely after midnight. Vsby 1 to 3 NM in the evening.
.FRI...W winds 5 to 10 kt. Seas around 2 ft in the morning, then
1 foot or less. Wave Detail: SW 2 ft at 4 seconds and E 2 ft at
11 seconds, becoming SW 1 foot at 4 seconds and SE 1 foot at
10 seconds. A chance of showers in the morning.
.FRI NIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas
1 foot or less. Wave Detail: N 1 foot at 2 seconds and SW 1 foot
at 4 seconds.
.SAT THROUGH SUN NIGHT...NE winds 10 to 15 kt. Seas 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.

$$

ANZ234-260600-
Buzzards Bay-
103 PM EDT Wed Sep 25 2024

.THIS AFTERNOON...E winds around 10 kt. Seas 2 to 3 ft. Wave
Detail: E 2 ft at 10 seconds and SE 1 foot at 3 seconds.
.TONIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
2 ft at 11 seconds and E 1 foot at 2 seconds.
.THU...SE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 2 to 3 ft. Wave Detail: SE 2 ft at 3 seconds and E 2 ft at
11 seconds.
.THU NIGHT...S winds 10 to 15 kt with gusts up to 20 kt, becoming
SW 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: S 2 ft
at 4 seconds and E 2 ft at 12 seconds. A chance of showers in the
evening. Showers likely after midnight. Vsby 1 to 3 NM in the
evening.
.FRI...NW winds 5 to 10 kt, becoming W in the afternoon. Seas
around 2 ft. Wave Detail: E 2 ft at 11 seconds and SW 1 foot at
4 seconds.
.FRI NIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas
around 2 ft in the evening, then 1 foot or less. Wave Detail: E
2 ft at 10 seconds and SW 1 foot at 4 seconds, becoming N 1 foot
at 2 seconds and W 1 foot at 4 seconds.
.SAT THROUGH SUN NIGHT...NE winds 10 to 15 kt with gusts up to
20 kt. Seas 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.

$$

ANZ235-260600-
Rhode Island Sound-
103 PM EDT Wed Sep 25 2024

.THIS AFTERNOON...E winds around 10 kt. Seas around 3 ft. Wave
Detail: SE 3 ft at 10 seconds and E 1 foot at 3 seconds.
.TONIGHT...SE winds 10 to 15 kt. Seas around 3 ft. Wave Detail:
SE 3 ft at 10 seconds and SE 1 foot at 4 seconds.
.THU...SE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 2 to 3 ft. Wave Detail: SE 3 ft at 4 seconds and SE 3 ft at
12 seconds.
.THU NIGHT...S winds 10 to 15 kt with gusts up to 20 kt, becoming
W after midnight. Seas 2 to 3 ft. Wave Detail: S 3 ft at
5 seconds and SE 3 ft at 12 seconds. A chance of showers in the
evening. Showers likely after midnight. Vsby 1 to 3 NM in the
evening.
.FRI...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas
2 to 3 ft. Wave Detail: SE 3 ft at 11 seconds and S 2 ft at
5 seconds.
.FRI NIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas
around 2 ft. Wave Detail: SE 2 ft at 10 seconds and N 1 foot at
2 seconds.
.SAT THROUGH SUN NIGHT...NE winds 10 to 15 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.

$$

ANZ237-260600-
Block Island Sound-
103 PM EDT Wed Sep 25 2024

.THIS AFTERNOON...E winds around 10 kt with gusts up to 20 kt.
Seas around 3 ft. Wave Detail: E 3 ft at 10 seconds and NE 1 foot
at 3 seconds.
.TONIGHT...SE winds 10 to 15 kt. Seas around 3 ft. Wave Detail: E
3 ft at 10 seconds and NE 1 foot at 3 seconds.
.THU...SE winds 10 to 15 kt. Seas around 3 ft. Wave Detail: SE
3 ft at 12 seconds and S 2 ft at 4 seconds.
.THU NIGHT...SW winds 10 to 15 kt, becoming W 5 to 10 kt after
midnight. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 12 seconds and
S 2 ft at 4 seconds. A chance of showers.
.FRI...NW winds 5 to 10 kt, becoming W in the afternoon. Seas
2 to 3 ft. Wave Detail: SE 3 ft at 11 seconds and SW 1 foot at
4 seconds.
.FRI NIGHT...W winds around 5 kt, becoming NE after midnight.
Seas around 2 ft. Wave Detail: SE 2 ft at 10 seconds and SW
1 foot at 4 seconds.
.SAT THROUGH SUN NIGHT...NE winds 10 to 15 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.

$$

ANZ230-260600-
Boston Harbor-
103 PM EDT Wed Sep 25 2024

.THIS AFTERNOON...E winds around 10 kt. Waves 1 foot or less,
except 2 to 4 ft at the outer harbor entrance.
.TONIGHT...SE winds 5 to 10 kt. Waves 1 foot or less, except 2 to
4 ft at the outer harbor entrance.
.THU...SE winds 10 to 15 kt. Waves 2 to 3 ft. A chance of
showers.
.THU NIGHT...SW winds 5 to 10 kt. Waves around 2 ft in the
evening, then 1 foot or less. At the outer harbor entrance, waves
2 to 4 ft. Showers likely in the evening. A chance of showers
after midnight. Vsby 1 to 3 NM in the evening.
.FRI AND FRI NIGHT...N winds 5 to 10 kt. Waves 1 foot or less,
except 2 to 4 ft at the outer harbor entrance.
.SAT THROUGH SUN NIGHT...N winds 5 to 10 kt. Waves 1 foot or
less.

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.

$$

ANZ236-260600-
Narragansett Bay-
103 PM EDT Wed Sep 25 2024

.THIS AFTERNOON...E winds around 10 kt. Waves 2 to 3 ft.
.TONIGHT...SE winds 5 to 10 kt. Waves 2 to 3 ft.
.THU...SE winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up
to 20 kt in the afternoon. Waves 2 to 3 ft.
.THU NIGHT...SW winds around 10 kt, becoming W after midnight.
Waves 2 to 3 ft. A chance of showers. Vsby 1 to 3 NM in the
evening.
.FRI...NW winds 5 to 10 kt, becoming W in the afternoon. Waves
2 to 3 ft.
.FRI NIGHT...W winds around 5 kt, becoming N after midnight.
Waves around 2 ft.
.SAT THROUGH SUN NIGHT...NE winds 5 to 10 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.

$$

For the latest updates...please visit our webpage at
www.weather.gov/boston

You can follow us on Facebook at
www.facebook.com/NWSBoston

You can follow us on Twitter at
@NWSBoston