318
FZUS51 KBOX 232004
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
404 PM EDT Mon Sep 23 2024

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

ANZ200-240900-
404 PM EDT Mon Sep 23 2024

.Synopsis for Massachusetts and Rhode Island coastal waters...
High pres over the Maritimes will give way to low pres tracking
through the Great Lakes into Quebec Wed and Thu. High pres will
build over New England from the upper Midwest through the weekend.

$$

ANZ250-240900-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
404 PM EDT Mon Sep 23 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY MORNING...

.TONIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 7 to
8 ft. Wave Detail: E 7 ft at 10 seconds and NE 1 foot at
2 seconds. A chance of sprinkles this evening.
.TUE...NE winds around 15 kt with gusts up to 20 kt. Seas 6 to
7 ft. Wave Detail: E 6 ft at 10 seconds.
.TUE NIGHT...E winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 5 to 7 ft. Wave Detail: E 6 ft at 10 seconds.
.WED...E winds around 10 kt. Seas 5 to 6 ft. Wave Detail: E 6 ft
at 10 seconds.
.WED NIGHT AND THU...S winds 5 to 10 kt. Seas 5 to 6 ft. Wave
Detail: E 6 ft at 12 seconds. A chance of showers.
.THU NIGHT...SW winds around 10 kt, becoming W after midnight.
Seas 4 to 6 ft. Wave Detail: E 6 ft at 11 seconds. A chance of
showers in the evening.
.FRI THROUGH SAT NIGHT...NE winds 10 to 15 kt with gusts up to
20 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.

$$

ANZ251-240900-
Massachusetts Bay and Ipswich Bay-
404 PM EDT Mon Sep 23 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY MORNING...

.TONIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt this evening.
Seas 5 to 8 ft. Wave Detail: E 7 ft at 10 seconds and NE 1 foot
at 3 seconds. A chance of sprinkles this evening.
.TUE...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to
7 ft. Wave Detail: E 6 ft at 10 seconds and NE 1 foot at
3 seconds.
.TUE NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. Wave Detail: E
6 ft at 10 seconds and NE 1 foot at 3 seconds.
.WED...E winds around 10 kt. Seas 4 to 5 ft. Wave Detail: E 5 ft
at 10 seconds.
.WED NIGHT AND THU...S winds 5 to 10 kt. Seas 4 to 5 ft. Wave
Detail: E 5 ft at 12 seconds. A chance of showers.
.THU NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas
3 to 5 ft. Wave Detail: E 5 ft at 11 seconds.
.FRI THROUGH SAT NIGHT...NE winds 5 to 10 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.

$$

ANZ231-240900-
Cape Cod Bay-
404 PM EDT Mon Sep 23 2024

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT TUESDAY...

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

$$

ANZ254-240900-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
404 PM EDT Mon Sep 23 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY MORNING...

.TONIGHT...NE winds around 15 kt with gusts up to 25 kt. Seas
6 to 9 ft. Wave Detail: E 9 ft at 10 seconds and NE 1 foot at
3 seconds.
.TUE...NE winds around 15 kt with gusts up to 20 kt. Seas 6 to
8 ft. Wave Detail: E 7 ft at 10 seconds and NE 1 foot at
3 seconds.
.TUE NIGHT...E winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 6 to 7 ft. Wave Detail: E 7 ft at 10 seconds and NE
1 foot at 3 seconds.
.WED...E winds around 10 kt. Seas 5 to 7 ft. Wave Detail: E 6 ft
at 10 seconds.
.WED NIGHT...E winds 5 to 10 kt. Seas 5 to 7 ft. Wave Detail: E
7 ft at 12 seconds.
.THU AND THU NIGHT...W winds 5 to 10 kt. Seas 4 to 6 ft. Wave
Detail: E 6 ft at 12 seconds. A chance of showers through the
night.
.FRI THROUGH SAT NIGHT...NE winds 10 to 15 kt with gusts up to
20 kt. Seas 4 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.

$$

ANZ255-240900-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
404 PM EDT Mon Sep 23 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY MORNING...

.TONIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to
8 ft. Wave Detail: E 8 ft at 10 seconds and NE 2 ft at 4 seconds.
.TUE...NE winds 15 to 20 kt. Seas 5 to 7 ft. Wave Detail: E 7 ft
at 10 seconds and NE 2 ft at 4 seconds.
.TUE NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 5 to 7 ft. Wave Detail: E 6 ft at 10 seconds and NE
2 ft at 4 seconds.
.WED...E winds 10 to 15 kt. Seas 4 to 6 ft. Wave Detail: E 5 ft
at 10 seconds and NE 1 foot at 3 seconds.
.WED NIGHT...E winds 5 to 10 kt. Seas 4 to 6 ft. Wave Detail: E
6 ft at 12 seconds and E 1 foot at 3 seconds.
.THU...SE winds 5 to 10 kt. Seas 4 to 6 ft. Wave Detail: E 6 ft
at 12 seconds.
.THU NIGHT...SW winds around 10 kt, becoming W after midnight.
Seas 3 to 5 ft.
.FRI...N winds around 10 kt. Seas 3 to 5 ft.
.FRI NIGHT...NE winds 10 to 15 kt. Seas 2 to 4 ft.
.SAT AND SAT NIGHT...NE winds 10 to 15 kt. Gusts up to 20 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.

$$

ANZ256-240900-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
404 PM EDT Mon Sep 23 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY MORNING...

.TONIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to
7 ft. Wave Detail: E 7 ft at 11 seconds and NE 1 foot at
4 seconds.
.TUE...NE winds 15 to 20 kt. Seas 5 to 6 ft. Wave Detail: E 6 ft
at 10 seconds and NE 1 foot at 3 seconds.
.TUE NIGHT...NE winds 15 to 20 kt, becoming E 10 to 15 kt after
midnight. Seas 4 to 6 ft. Wave Detail: E 6 ft at 10 seconds and
NE 1 foot at 4 seconds.
.WED...E winds 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: E 5 ft
at 10 seconds.
.WED NIGHT...E winds 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: E
5 ft at 10 seconds.
.THU AND THU NIGHT...W winds around 10 kt. Seas 3 to 5 ft. Wave
Detail: E 5 ft at 12 seconds and SW 2 ft at 4 seconds.
.FRI THROUGH SAT 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.

$$

ANZ232-240900-
Nantucket Sound-
404 PM EDT Mon Sep 23 2024

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT TUESDAY...

.TONIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft. Wave Detail: E 5 ft at 10 seconds and NE 2 ft at 4 seconds.
A chance of sprinkles this evening.
.TUE...NE winds around 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Wave Detail: E 4 ft at 10 seconds and NE 2 ft at 4 seconds.
.TUE NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 4 ft. Wave Detail: E 4 ft at 10 seconds and E
2 ft at 4 seconds.
.WED...E winds 10 to 15 kt. Seas 2 to 4 ft. Wave Detail: E 3 ft
at 10 seconds and E 2 ft at 3 seconds.
.WED NIGHT...SE winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: E
3 ft at 11 seconds and E 2 ft at 3 seconds.
.THU AND THU NIGHT...W winds 5 to 10 kt. Seas 2 to 4 ft. Wave
Detail: E 3 ft at 12 seconds and S 1 foot at 3 seconds.
.FRI THROUGH SAT NIGHT...NE winds 10 to 15 kt with gusts up 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.

$$

ANZ233-240900-
Vineyard Sound-
404 PM EDT Mon Sep 23 2024

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT TUESDAY...

.TONIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Wave Detail: E 3 ft at 10 seconds and NE 2 ft at 3 seconds.
A chance of sprinkles this evening.
.TUE...NE winds around 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: NE 2 ft at 3 seconds and E 2 ft at 10 seconds.
.TUE NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 3 seconds and E
2 ft at 10 seconds.
.WED...E winds around 10 kt. Seas around 2 ft. Wave Detail: E
2 ft at 10 seconds and NE 1 foot at 3 seconds.
.WED NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
E 2 ft at 10 seconds and E 1 foot at 2 seconds.
.THU AND THU NIGHT...W winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: SE 2 ft at 11 seconds and SE 1 foot at 2 seconds.
.FRI THROUGH SAT 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.

$$

ANZ234-240900-
Buzzards Bay-
404 PM EDT Mon Sep 23 2024

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT TUESDAY...

.TONIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt this evening.
Seas 2 to 4 ft. Wave Detail: E 3 ft at 11 seconds and NE 2 ft at
3 seconds. A chance of sprinkles this evening.
.TUE...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: E 3 ft at 10 seconds and NE 2 ft at 3 seconds.
.TUE NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 3 seconds and E
2 ft at 10 seconds.
.WED...E winds around 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft
at 10 seconds and E 1 foot at 3 seconds.
.WED NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
2 ft at 10 seconds and E 1 foot at 2 seconds.
.THU AND THU NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: SE 2 ft at 11 seconds and SE 1 foot at 2 seconds.
.FRI THROUGH SAT 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.

$$

ANZ235-240900-
Rhode Island Sound-
404 PM EDT Mon Sep 23 2024

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT TUESDAY...

.TONIGHT...NE winds around 15 kt with gusts up to 20 kt. Seas
3 to 5 ft. Wave Detail: E 4 ft at 11 seconds and NE 2 ft at
4 seconds. A chance of sprinkles this evening.
.TUE...NE winds around 15 kt with gusts up to 20 kt. Seas 3 to
4 ft. Wave Detail: E 4 ft at 11 seconds and NE 2 ft at 4 seconds.
.TUE NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 3 to 4 ft. Wave Detail: E 4 ft at 10 seconds and NE
2 ft at 4 seconds.
.WED...E winds around 10 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft
at 10 seconds and NE 1 foot at 3 seconds.
.WED NIGHT...SE winds 5 to 10 kt. Seas around 3 ft. Wave Detail:
SE 3 ft at 10 seconds and E 1 foot at 3 seconds.
.THU AND THU NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: SE 3 ft at 13 seconds and SW 2 ft at 4 seconds.
.FRI THROUGH SAT 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.

$$

ANZ237-240900-
Block Island Sound-
404 PM EDT Mon Sep 23 2024

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT TUESDAY...

.TONIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. Wave Detail: E 5 ft at 11 seconds and NE 1 foot at
4 seconds.
.TUE...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
4 ft. Wave Detail: E 4 ft at 11 seconds and NE 1 foot at
3 seconds.
.TUE NIGHT...E winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 3 to 4 ft. Wave Detail: E 4 ft at 10 seconds and NE
2 ft at 4 seconds.
.WED...E winds around 10 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft
at 10 seconds and NE 1 foot at 4 seconds.
.WED NIGHT...SE winds 5 to 10 kt. Seas around 3 ft. Wave Detail:
E 3 ft at 10 seconds.
.THU AND THU NIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: SE 3 ft at 13 seconds.
.FRI THROUGH SAT NIGHT...NE winds 5 to 10 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.

$$

ANZ230-240900-
Boston Harbor-
404 PM EDT Mon Sep 23 2024

.TONIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt this evening.
Waves 2 to 3 ft. A chance of sprinkles this evening.
.TUE...NE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Waves 2 to 3 ft.
.TUE NIGHT...E winds 10 to 15 kt, diminishing to 5 to 10 kt after
midnight. Waves 2 to 3 ft in the evening, then 1 foot or less. At
the outer harbor entrance, waves 2 to 4 ft.
.WED...E winds 5 to 10 kt. Waves 1 foot or less, then 2 to 3 ft
in the afternoon. At the outer harbor entrance, waves 2 to 4 ft.
.WED NIGHT AND THU...S winds 5 to 10 kt. Waves around 2 ft. A
chance of showers.
.THU NIGHT...SW winds 5 to 10 kt, becoming W after midnight.
Waves 1 foot or less, except 2 to 4 ft at the outer harbor
entrance.
.FRI THROUGH SAT NIGHT...NE 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.

$$

ANZ236-240900-
Narragansett Bay-
404 PM EDT Mon Sep 23 2024

.TONIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt this evening.
Waves 2 to 3 ft. A chance of sprinkles this evening.
.TUE...NE winds around 10 kt. Gusts up to 20 kt in the afternoon.
Waves 2 to 3 ft.
.TUE NIGHT...NE winds 5 to 10 kt. Waves 2 to 3 ft.
.WED...E winds 5 to 10 kt. Waves 2 to 3 ft.
.WED NIGHT...SE winds 5 to 10 kt. Waves 2 to 3 ft.
.THU AND THU NIGHT...NW winds 5 to 10 kt. Waves 2 to 3 ft.
.FRI THROUGH SAT 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