Coastal Waters Forecast
Issued by NWS Boston, MA

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109
FZUS51 KBOX 081104
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
703 AM EDT Tue Oct 8 2024

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

ANZ200-090000-
703 AM EDT Tue Oct 8 2024

.Synopsis for Massachusetts and Rhode Island coastal waters...
A cold front moves E of the waters today as high pres builds across
the Midwest through Wed, leading to W-NW flow. Long period easterly
swell will begin to subside tonight. A cold front crosses the waters
Wed night followed by high pres moving from the Gt Lakes Thu to the
mid Atlc region Fri. Another cold front will move across the waters
Sat. High pres moves E of the waters Sun as low pres approaches from
Gt Lakes.

$$

ANZ250-090000-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
703 AM EDT Tue Oct 8 2024

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

.TODAY...NW winds 10 to 15 kt. Gusts up to 20 kt this morning.
Seas 5 to 7 ft. Wave Detail: E 7 ft at 15 seconds and W 3 ft at
4 seconds.
.TONIGHT...W winds 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: E
5 ft at 12 seconds and NW 2 ft at 4 seconds.
.WED...W winds 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: E 5 ft at
12 seconds.
.WED NIGHT...W winds 5 to 10 kt, becoming NW 10 to 15 kt with
gusts up to 20 kt after midnight. Seas 3 to 4 ft. Wave Detail: SE
4 ft at 11 seconds and W 3 ft at 4 seconds. A chance of showers.
.THU AND THU NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt.
Seas 3 to 5 ft. Wave Detail: NW 4 ft at 5 seconds and E 3 ft at
11 seconds.
.FRI THROUGH SAT...W winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 4 ft. Wave Detail: NW 4 ft at 5 seconds and E 3 ft at
11 seconds.
.SAT NIGHT...NW winds around 15 kt with gusts up to 25 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.

$$

ANZ251-090000-
Massachusetts Bay and Ipswich Bay-
703 AM EDT Tue Oct 8 2024

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

.TODAY...NW winds 10 to 15 kt. Gusts up to 20 kt this morning.
Seas 4 to 5 ft. Wave Detail: E 5 ft at 15 seconds and NW 2 ft at
3 seconds.
.TONIGHT...W winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E
4 ft at 13 seconds and NW 1 foot at 4 seconds.
.WED...W winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: E 4 ft at
12 seconds.
.WED NIGHT...W winds 5 to 10 kt, increasing to 10 to 15 kt with
gusts up to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: E
3 ft at 12 seconds and W 2 ft at 3 seconds.
.THU AND THU NIGHT...NW winds 15 to 20 kt. Seas 2 to 3 ft. Wave
Detail: NW 3 ft at 3 seconds and E 3 ft at 11 seconds.
.FRI THROUGH SAT NIGHT...NW winds 10 to 15 kt with gusts up to
20 kt. Seas 2 to 3 ft. Wave Detail: NW 3 ft at 4 seconds and NE
2 ft at 8 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.

$$

ANZ231-090000-
Cape Cod Bay-
703 AM EDT Tue Oct 8 2024

.TODAY...NW winds 10 to 15 kt. Gusts up to 20 kt this morning.
Seas 2 to 4 ft. Wave Detail: E 4 ft at 13 seconds and NW 2 ft at
4 seconds.
.TONIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 12 seconds and NW 1 foot at 4 seconds.
.WED...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft
at 10 seconds and NW 1 foot at 4 seconds.
.WED NIGHT...W winds 5 to 10 kt, becoming NW 10 to 15 kt with
gusts up to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: NW
2 ft at 3 seconds and E 2 ft at 9 seconds.
.THU AND THU NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 4 ft. Wave Detail: NW 3 ft at 4 seconds and E 2 ft at
11 seconds.
.FRI THROUGH SAT NIGHT...NW winds 10 to 15 kt with gusts up to
25 kt. Seas 2 to 3 ft. Wave Detail: NW 3 ft at 5 seconds and NE
2 ft at 9 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.

$$

ANZ254-090000-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
703 AM EDT Tue Oct 8 2024

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

.TODAY...NW winds 10 to 15 kt. Seas 5 to 7 ft. Wave Detail: E
7 ft at 14 seconds and SW 2 ft at 5 seconds.
.TONIGHT...W winds 5 to 10 kt. Seas 4 to 6 ft. Wave Detail: E
6 ft at 13 seconds and NW 2 ft at 4 seconds.
.WED...W winds 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: E 5 ft at
12 seconds and NW 1 foot at 4 seconds.
.WED NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt after
midnight. Seas 3 to 4 ft. Wave Detail: E 4 ft at 12 seconds and W
3 ft at 4 seconds. A chance of showers after midnight.
.THU AND THU NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt.
Seas 3 to 5 ft. Wave Detail: NW 4 ft at 5 seconds and E 3 ft at
11 seconds.
.FRI THROUGH SAT NIGHT...NW winds 15 to 20 kt with gusts up to
25 kt. Seas 3 to 5 ft. Wave Detail: NW 4 ft at 6 seconds and NE
3 ft at 11 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.

$$

ANZ255-090000-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
703 AM EDT Tue Oct 8 2024

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

.TODAY...NW winds 10 to 15 kt. Seas 4 to 6 ft. Wave Detail: E
5 ft at 15 seconds and W 3 ft at 5 seconds.
.TONIGHT...W winds 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: E
5 ft at 13 seconds and W 2 ft at 5 seconds.
.WED...W winds 10 to 15 kt. Seas 3 to 5 ft. Wave Detail: E 4 ft
at 12 seconds and W 3 ft at 4 seconds.
.WED NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt after
midnight. Seas 2 to 4 ft. Wave Detail: W 4 ft at 5 seconds and E
3 ft at 12 seconds.
.THU AND THU NIGHT...NW winds 15 to 20 kt. Seas 2 to 4 ft. Wave
Detail: W 4 ft at 5 seconds and E 3 ft at 11 seconds.
.FRI AND FRI NIGHT...W winds 15 to 20 kt. Seas 2 to 4 ft. Wave
Detail: NW 4 ft at 5 seconds and E 2 ft at 10 seconds.
.SAT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to
6 ft.
.SAT NIGHT...NW winds 15 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.

$$

ANZ256-090000-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
703 AM EDT Tue Oct 8 2024

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

.TODAY...NW winds 10 to 15 kt. Seas 3 to 5 ft. Wave Detail: SE
5 ft at 15 seconds and NW 4 ft at 5 seconds.
.TONIGHT...W winds around 10 kt. Seas 3 to 4 ft. Wave Detail: E
4 ft at 13 seconds and W 2 ft at 4 seconds.
.WED...W winds 10 to 15 kt. Seas 2 to 4 ft. Wave Detail: E 4 ft
at 12 seconds and W 3 ft at 4 seconds.
.WED NIGHT...W winds 10 to 15 kt, becoming NW 15 to 20 kt after
midnight. Seas 2 to 4 ft. Wave Detail: W 4 ft at 4 seconds and E
3 ft at 12 seconds.
.THU AND THU NIGHT...NW winds 15 to 20 kt. Seas 2 to 4 ft. Wave
Detail: NW 4 ft at 5 seconds and E 3 ft at 11 seconds.
.FRI AND FRI NIGHT...NW winds 10 to 15 kt, becoming W 15 to
20 kt. Seas 2 to 4 ft. Wave Detail: NW 4 ft at 4 seconds and E
2 ft at 10 seconds.
.SAT AND SAT NIGHT...W winds 15 to 20 kt, becoming NW. Gusts up
to 25 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.

$$

ANZ232-090000-
Nantucket Sound-
703 AM EDT Tue Oct 8 2024

.TODAY...NW winds 10 to 15 kt. Seas 2 to 4 ft. Wave Detail: E
3 ft at 15 seconds and NW 2 ft at 4 seconds.
.TONIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 13 seconds and W 2 ft at 3 seconds.
.WED...W winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: W 2 ft
at 3 seconds and E 2 ft at 13 seconds.
.WED NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt after
midnight. Seas 2 to 3 ft. Wave Detail: W 2 ft at 3 seconds and E
2 ft at 12 seconds.
.THU AND THU NIGHT...NW winds 15 to 20 kt. Seas 2 to 3 ft. Wave
Detail: NW 3 ft at 4 seconds and E 2 ft at 11 seconds.
.FRI THROUGH SAT NIGHT...NW winds 15 to 20 kt with gusts up to
25 kt. Seas 2 to 3 ft. Wave Detail: NW 3 ft at 4 seconds and E
1 foot at 11 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.

$$

ANZ233-090000-
Vineyard Sound-
703 AM EDT Tue Oct 8 2024

.TODAY...NW winds 10 to 15 kt. Seas around 2 ft. Wave Detail: NW
2 ft at 5 seconds and SE 2 ft at 15 seconds.
.TONIGHT...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE
2 ft at 13 seconds and W 1 foot at 5 seconds.
.WED...NW winds 5 to 10 kt, becoming W in the afternoon. Seas
around 2 ft. Wave Detail: SW 2 ft at 4 seconds and E 1 foot at
12 seconds.
.WED NIGHT...W winds 10 to 15 kt. Seas around 2 ft. Wave Detail:
SW 2 ft at 4 seconds and E 1 foot at 11 seconds.
.THU AND THU NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft. Wave Detail: NW 2 ft at 4 seconds and E 1 foot
at 11 seconds.
.FRI THROUGH SAT NIGHT...NW winds 15 to 20 kt. Seas 2 to 3 ft.
Wave Detail: SW 3 ft at 5 seconds and SE 1 foot at 9 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.

$$

ANZ234-090000-
Buzzards Bay-
703 AM EDT Tue Oct 8 2024

.TODAY...NW winds around 10 kt. Seas 2 to 3 ft. Wave Detail: NW
2 ft at 4 seconds and E 2 ft at 15 seconds.
.TONIGHT...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E
2 ft at 13 seconds and SW 1 foot at 5 seconds.
.WED...NW winds 5 to 10 kt, becoming W in the afternoon. Seas
around 2 ft. Wave Detail: E 2 ft at 12 seconds and W 1 foot at
3 seconds.
.WED NIGHT...W winds 10 to 15 kt. Seas around 2 ft. Wave Detail:
W 2 ft at 4 seconds and E 1 foot at 11 seconds.
.THU AND THU NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft. Wave Detail: NW 2 ft at 4 seconds and E 1 foot
at 11 seconds.
.FRI THROUGH SAT NIGHT...NW winds 10 to 15 kt with gusts up to
20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 5 seconds and E
1 foot at 9 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.

$$

ANZ235-090000-
Rhode Island Sound-
703 AM EDT Tue Oct 8 2024

.TODAY...NW winds 10 to 15 kt, becoming W this afternoon. Seas
2 to 4 ft. Wave Detail: SE 4 ft at 15 seconds and W 3 ft at
5 seconds.
.TONIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
3 ft at 13 seconds and W 2 ft at 4 seconds.
.WED...NW winds 5 to 10 kt, becoming W 10 to 15 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: W 2 ft at 4 seconds and
SE 2 ft at 12 seconds.
.WED NIGHT...NW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: W
3 ft at 4 seconds and SE 2 ft at 12 seconds.
.THU AND THU NIGHT...NW winds 15 to 20 kt. Seas 2 to 3 ft. Wave
Detail: NW 3 ft at 4 seconds and SE 1 foot at 11 seconds.
.FRI THROUGH SAT NIGHT...NW winds 15 to 20 kt. Seas 2 to 4 ft.
Wave Detail: SW 4 ft at 5 seconds and S 2 ft at 11 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.

$$

ANZ237-090000-
Block Island Sound-
703 AM EDT Tue Oct 8 2024

.TODAY...NW winds 10 to 15 kt, becoming W this afternoon. Seas
2 to 4 ft. Wave Detail: SE 4 ft at 15 seconds and W 2 ft at
5 seconds.
.TONIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
3 ft at 14 seconds and W 1 foot at 3 seconds.
.WED...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: W 2 ft
at 4 seconds and SE 2 ft at 12 seconds.
.WED NIGHT...NW winds 10 to 15 kt. Seas around 2 ft. Wave Detail:
W 2 ft at 4 seconds and E 2 ft at 12 seconds.
.THU AND THU NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft. Wave Detail: NW 2 ft at 4 seconds and E 2 ft at
12 seconds.
.FRI THROUGH SAT NIGHT...NW winds 10 to 15 kt with gusts up to
20 kt. Seas 2 to 4 ft. Wave Detail: W 3 ft at 4 seconds and SE
2 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.

$$

ANZ230-090000-
Boston Harbor-
703 AM EDT Tue Oct 8 2024

.TODAY...NW winds 10 to 15 kt with gusts up to 20 kt, diminishing
to 5 to 10 kt this afternoon. Waves around 2 ft this morning,
then 1 foot or less. At the outer harbor entrance, waves 2 to
4 ft.
.TONIGHT...W winds 5 to 10 kt. Waves 1 foot or less, except 2 to
4 ft at the outer harbor entrance.
.WED...W winds 5 to 10 kt. Waves 1 foot or less.
.WED NIGHT...W winds 10 to 15 kt. Waves 1 foot or less, then
around 2 ft after midnight.
.THU AND THU NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt.
Waves around 2 ft.
.FRI THROUGH SAT 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.

$$

ANZ236-090000-
Narragansett Bay-
703 AM EDT Tue Oct 8 2024

.TODAY...NW winds 5 to 10 kt. Waves 2 to 3 ft.
.TONIGHT...W winds 5 to 10 kt. Waves 2 to 3 ft.
.WED...W winds 5 to 10 kt. Waves around 2 ft.
.WED NIGHT...W winds 5 to 10 kt. Waves around 2 ft.
.THU AND THU NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt.
Waves around 2 ft.
.FRI THROUGH SAT NIGHT...NW 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.

$$

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