947
FZUS51 KBOX 121405
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
1005 AM EDT Sun May 12 2024

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

ANZ200-130300-
1005 AM EDT Sun May 12 2024

.Synopsis for Massachusetts and Rhode Island coastal waters...
Relatively calm winds over the marine zones for Sunday. Seas over
the southeastern marine zones remain somewhat elevated in the 4 to 5
foot range but will gradually diminish early next week with high
pressure building over the region. Rain chances increase middle of
next week as another low pressure system passes to the south.

$$

ANZ250-130300-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
1005 AM EDT Sun May 12 2024

.THIS AFTERNOON...SW winds 5 to 10 kt. Seas 3 to 4 ft. Wave
Detail: E 4 ft at 8 seconds and SE 1 foot at 8 seconds.
.TONIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas
3 to 4 ft. Wave Detail: E 4 ft at 9 seconds and SE 2 ft at
10 seconds.
.MON...SW winds 5 to 10 kt, becoming S 10 to 15 kt in the
afternoon. Seas 3 to 4 ft. Wave Detail: E 3 ft at 9 seconds and S
2 ft at 3 seconds.
.MON NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft. Wave Detail: S 3 ft at 4 seconds and E 2 ft at
8 seconds.
.TUE...S winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft
at 4 seconds and SE 2 ft at 7 seconds.
.TUE NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 4 ft. Wave Detail: SE 3 ft at 6 seconds and SE 1 foot at
12 seconds. A chance of showers in the evening, then showers
likely after midnight.
.WED AND WED NIGHT...S winds 10 to 15 kt, becoming E. Gusts up to
25 kt. Seas 2 to 4 ft. Showers likely.
.THU...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
5 ft. A chance of showers.
.THU NIGHT...NE winds 10 to 15 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.

$$

ANZ251-130300-
Massachusetts Bay and Ipswich Bay-
1005 AM EDT Sun May 12 2024

.THIS AFTERNOON...S winds around 5 kt, increasing to 5 to 10 kt.
Seas 2 to 3 ft. Wave Detail: E 3 ft at 9 seconds and S 1 foot at
8 seconds.
.TONIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas
2 to 3 ft. Wave Detail: E 3 ft at 9 seconds and SE 1 foot at
11 seconds.
.MON...SW winds 5 to 10 kt, becoming SE 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: E 3 ft at
9 seconds and SE 2 ft at 3 seconds.
.MON NIGHT...S winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 5 seconds
and E 2 ft at 8 seconds.
.TUE...S winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft
at 3 seconds and SE 2 ft at 7 seconds.
.TUE NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas
2 to 3 ft. Wave Detail: SE 3 ft at 5 seconds and E 1 foot at
8 seconds. A chance of showers in the evening, then showers
likely after midnight.
.WED AND WED NIGHT...S winds 10 to 15 kt, becoming E. Gusts up to
20 kt. Seas 2 to 4 ft. Showers likely.
.THU...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
4 ft. A chance of showers.
.THU NIGHT...NE winds 10 to 15 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.

$$

ANZ231-130300-
Cape Cod Bay-
1005 AM EDT Sun May 12 2024

.THIS AFTERNOON...W winds around 5 kt, becoming S. Seas around
2 ft. Wave Detail: E 2 ft at 8 seconds and SW 1 foot at
3 seconds.
.TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E
2 ft at 9 seconds and SW 1 foot at 3 seconds.
.MON...SW winds 5 to 10 kt, becoming S in the afternoon. Seas
around 2 ft. Wave Detail: E 2 ft at 9 seconds and W 1 foot at
2 seconds.
.MON NIGHT...SW winds around 10 kt. Seas around 2 ft. Wave
Detail: E 2 ft at 8 seconds and SW 1 foot at 2 seconds.
.TUE...S winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft. Wave Detail: S 2 ft at 3 seconds and SE 1 foot at
7 seconds.
.TUE NIGHT...S winds 10 to 15 kt with gusts up to 25 kt. Seas
2 to 3 ft. Wave Detail: S 2 ft at 3 seconds and SE 2 ft at
7 seconds. A chance of showers.
.WED AND WED NIGHT...S winds 10 to 15 kt, becoming E. Gusts up to
25 kt. Seas 2 to 3 ft. Showers likely.
.THU...NE winds around 15 kt with gusts up to 20 kt. Seas around
3 ft. A chance of showers.
.THU 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.

$$

ANZ254-130300-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
1005 AM EDT Sun May 12 2024

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING...

.THIS AFTERNOON...N winds around 5 kt, becoming SW. Seas 4 to
5 ft. Wave Detail: E 5 ft at 8 seconds and S 1 foot at 8 seconds.
.TONIGHT...W winds 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: E
5 ft at 9 seconds and S 2 ft at 10 seconds.
.MON...SW winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft
at 9 seconds and S 2 ft at 8 seconds.
.MON NIGHT...SW winds around 10 kt. Seas 2 to 3 ft. Wave Detail:
E 3 ft at 8 seconds and SW 1 foot at 3 seconds.
.TUE...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
4 ft. Wave Detail: S 2 ft at 3 seconds and E 2 ft at 8 seconds.
.TUE NIGHT...S winds 10 to 15 kt with gusts up to 25 kt. Seas
3 to 4 ft. Wave Detail: SE 3 ft at 6 seconds and SE 1 foot at
12 seconds. A chance of showers after midnight.
.WED...S winds around 15 kt with gusts up to 25 kt. Seas 3 to
5 ft. Showers likely.
.WED NIGHT...E winds around 15 kt with gusts up to 25 kt. Seas
5 to 7 ft. Showers likely.
.THU...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to
7 ft. A chance of showers.
.THU NIGHT...NE winds around 15 kt with gusts up to 20 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.

$$

ANZ255-130300-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
1005 AM EDT Sun May 12 2024

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING...

.THIS AFTERNOON...E winds around 5 kt, becoming SW. Seas 3 to
5 ft. Wave Detail: E 4 ft at 8 seconds and S 2 ft at 9 seconds.
.TONIGHT...W winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: E
4 ft at 9 seconds and S 2 ft at 9 seconds.
.MON...W winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft
at 9 seconds and W 2 ft at 4 seconds.
.MON NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail:
SW 3 ft at 4 seconds and S 2 ft at 7 seconds.
.TUE...S winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 7 seconds and SE 1 foot at 13 seconds.
.TUE NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 4 ft. Wave Detail: S 4 ft at 6 seconds and SE 1 foot at
12 seconds. A chance of showers after midnight.
.WED...SE winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to
6 ft. Showers likely. Vsby 1 to 3 NM.
.WED NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas
5 to 7 ft. Showers likely.
.THU...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to
7 ft. A chance of showers.
.THU NIGHT...NE winds around 15 kt with gusts up to 25 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.

$$

ANZ256-130300-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
1005 AM EDT Sun May 12 2024

.THIS AFTERNOON...SE winds around 5 kt, becoming S. Seas 2 to
4 ft. Wave Detail: E 4 ft at 8 seconds and S 2 ft at 9 seconds.
.TONIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 9 seconds and S 2 ft at 9 seconds.
.MON...W winds 5 to 10 kt, becoming SW 10 to 15 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: E 3 ft at 9 seconds and W
2 ft at 3 seconds.
.MON NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail:
SE 3 ft at 7 seconds and SE 1 foot at 13 seconds.
.TUE...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Wave Detail: SE 4 ft at 7 seconds and SE 1 foot at
13 seconds.
.TUE NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 4 ft. Wave Detail: S 4 ft at 7 seconds and SE 1 foot at
12 seconds. A chance of showers in the evening, then showers
likely after midnight.
.WED...SE winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to
6 ft. Showers likely. Vsby 1 to 3 NM.
.WED NIGHT...E winds around 15 kt with gusts up to 25 kt. Seas
5 to 7 ft. Showers likely.
.THU...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to
7 ft. A chance of showers.
.THU NIGHT...NE winds around 15 kt with gusts up to 20 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.

$$

ANZ232-130300-
Nantucket Sound-
1005 AM EDT Sun May 12 2024

.THIS AFTERNOON...SE winds around 5 kt, becoming SW. Seas around
2 ft. Wave Detail: E 2 ft at 8 seconds and SW 1 foot at
2 seconds.
.TONIGHT...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E
2 ft at 9 seconds and SW 1 foot at 3 seconds.
.MON...W winds 5 to 10 kt, becoming SW 10 to 15 kt in the
afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds
and E 2 ft at 9 seconds.
.MON NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Wave Detail:
SW 2 ft at 3 seconds and SE 1 foot at 7 seconds.
.TUE...S winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft. Wave Detail: S 2 ft at 4 seconds and SE 1 foot at
7 seconds.
.TUE NIGHT...S winds around 15 kt with gusts up to 25 kt. Seas
2 to 3 ft. Wave Detail: SE 3 ft at 5 seconds and E 1 foot at
8 seconds. A chance of showers.
.WED AND WED NIGHT...SE winds around 15 kt, becoming E. Gusts up
to 25 kt. Seas 2 to 4 ft. Showers likely. Vsby 1 to 3 NM.
.THU...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
4 ft. A chance of showers.
.THU 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.

$$

ANZ233-130300-
Vineyard Sound-
1005 AM EDT Sun May 12 2024

.THIS AFTERNOON...SE winds around 5 kt, becoming SW. Seas 1 foot
or less. Wave Detail: SW 1 foot at 2 seconds and S 1 foot at
8 seconds.
.TONIGHT...W winds 5 to 10 kt. Seas 1 foot or less. Wave Detail:
SW 1 foot at 3 seconds and E 1 foot at 9 seconds.
.MON...W winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas 1 foot or less. Wave Detail: SW
1 foot at 4 seconds and S 1 foot at 8 seconds.
.MON NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and
S 1 foot at 7 seconds.
.TUE...S winds 15 to 20 kt. Seas around 2 ft. Wave Detail: SE
2 ft at 7 seconds and SE 1 foot at 13 seconds.
.TUE NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas
2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and SE 1 foot at
12 seconds. A chance of showers in the evening, then showers
likely after midnight.
.WED AND WED NIGHT...SE winds 15 to 20 kt, becoming E. Gusts up
to 25 kt. Seas 2 to 4 ft. Showers likely. Vsby 1 to 3 NM.
.THU...NE winds around 15 kt with gusts up to 25 kt. Seas 3 to
4 ft. A chance of showers.
.THU 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.

$$

ANZ234-130300-
Buzzards Bay-
1005 AM EDT Sun May 12 2024

.THIS AFTERNOON...S winds around 5 kt, becoming SW. Seas 1 foot
or less. Wave Detail: SW 1 foot at 2 seconds and S 1 foot at
7 seconds.
.TONIGHT...W winds 5 to 10 kt. Seas 1 foot or less. Wave Detail:
SW 1 foot at 3 seconds and E 1 foot at 9 seconds.
.MON...SW winds 5 to 10 kt, increasing to 15 to 20 kt in the
afternoon. Seas 1 foot or less. Wave Detail: SW 1 foot at
4 seconds and S 1 foot at 8 seconds.
.MON NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and
SE 1 foot at 7 seconds.
.TUE...S winds 15 to 20 kt. Seas around 2 ft. Wave Detail: SW
2 ft at 4 seconds and SE 1 foot at 7 seconds.
.TUE NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas
2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and SE 1 foot at
12 seconds. A chance of showers in the evening, then showers
likely after midnight.
.WED AND WED NIGHT...SE winds around 15 kt, becoming E. Gusts up
to 25 kt. Seas 2 to 4 ft. Showers likely. Vsby 1 to 3 NM.
.THU...NE winds around 15 kt with gusts up to 20 kt. Seas 3 to
4 ft. A chance of showers.
.THU 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.

$$

ANZ235-130300-
Rhode Island Sound-
1005 AM EDT Sun May 12 2024

.THIS AFTERNOON...S winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: E 2 ft at 8 seconds and SW 1 foot at 2 seconds.
.TONIGHT...W winds around 10 kt. Seas around 2 ft. Wave Detail: W
2 ft at 3 seconds and S 2 ft at 9 seconds.
.MON...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and S 2 ft at
7 seconds.
.MON NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and
SE 2 ft at 8 seconds.
.TUE...S winds around 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: SE 3 ft at 7 seconds and SE 1 foot at
13 seconds.
.TUE NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas
around 3 ft. Wave Detail: S 3 ft at 7 seconds and SE 1 foot at
12 seconds. A chance of showers in the evening, then showers
likely after midnight.
.WED...SE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft. Showers likely. Vsby 1 to 3 NM.
.WED NIGHT...NE winds around 15 kt with gusts up to 25 kt. Seas
4 to 6 ft. Showers likely.
.THU...NE winds around 15 kt with gusts up to 25 kt. Seas 4 to
6 ft. A chance of showers.
.THU 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.

$$

ANZ237-130300-
Block Island Sound-
1005 AM EDT Sun May 12 2024

.THIS AFTERNOON...S winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: E 2 ft at 8 seconds and SW 1 foot at 2 seconds.
.TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E
2 ft at 9 seconds and SW 1 foot at 2 seconds.
.MON...SW winds 10 to 15 kt. Seas around 2 ft. Wave Detail: SW
2 ft at 3 seconds and E 2 ft at 9 seconds.
.MON NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Wave Detail:
S 2 ft at 3 seconds and E 2 ft at 8 seconds.
.TUE...S winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 2 to 3 ft. Wave Detail: S 2 ft at 7 seconds and SE 1 foot at
13 seconds.
.TUE NIGHT...S winds 10 to 15 kt with gusts up to 25 kt. Seas
2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and SE 1 foot at
12 seconds. A chance of showers in the evening, then showers
likely after midnight.
.WED AND WED NIGHT...SE winds 10 to 15 kt, becoming NE. Gusts up
to 25 kt. Seas 3 to 5 ft. Showers likely.
.THU...NE winds around 15 kt with gusts up to 25 kt. Seas 4 to
5 ft. A chance of showers.
.THU 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.

$$

ANZ230-130300-
Boston Harbor-
1005 AM EDT Sun May 12 2024

.THIS AFTERNOON...SE winds around 5 kt, increasing to 5 to 10 kt.
Waves 1 foot or less.
.TONIGHT...S winds 5 to 10 kt, becoming SW after midnight. Waves
1 foot or less.
.MON...SW winds 5 to 10 kt, becoming SE 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.
.MON NIGHT...S winds 15 to 20 kt. Waves around 2 ft.
.TUE...S winds 15 to 20 kt with gusts up to 25 kt. Waves around
2 ft.
.TUE NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Waves
around 2 ft. A chance of showers in the evening, then showers
likely after midnight.
.WED AND WED NIGHT...S winds 15 to 20 kt, becoming NE around
10 kt. Waves 2 to 3 ft. Showers likely.
.THU...NE winds around 10 kt with gusts up to 20 kt. Waves 2 to
3 ft. A chance of showers.
.THU NIGHT...N 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.

$$

ANZ236-130300-
Narragansett Bay-
1005 AM EDT Sun May 12 2024

.THIS AFTERNOON...S winds 5 to 10 kt. Waves around 2 ft.
.TONIGHT...SW winds 5 to 10 kt. Waves around 2 ft.
.MON...SW winds 5 to 10 kt, increasing to 15 to 20 kt in the
afternoon. Waves around 2 ft.
.MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Waves
around 2 ft.
.TUE...S winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to
3 ft.
.TUE NIGHT...S winds 10 to 15 kt with gusts up to 25 kt. Waves
2 to 3 ft. A chance of showers in the evening, then showers
likely after midnight.
.WED AND WED NIGHT...SE winds around 15 kt, becoming NE. Gusts up
to 25 kt. Waves 2 to 4 ft. Showers likely.
.THU...NE winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to
3 ft. A chance of showers.
.THU NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Waves
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.

$$

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