Coastal Waters Forecast
Issued by NWS Boston, MA

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FZUS51 KBOX 040501
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
101 AM EDT Wed Oct 4 2023

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

ANZ200-041800-
101 AM EDT Wed Oct 4 2023

.Synopsis for Massachusetts and Rhode Island coastal waters...
High pressure continues to move overhead this evening into tomorrow,
and then pushing further offshore Thursday. A cold front brings the
next shot for rain showers this coming weekend.

$$

ANZ250-041800-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
101 AM EDT Wed Oct 4 2023

.REST OF TONIGHT...N winds 5 to 10 kt. Seas around 3 ft.
.WED...NE winds 5 to 10 kt. Seas 2 to 3 ft.
.WED NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog.
Vsby 1 NM or less.
.THU...S winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. Vsby 1 NM
or less.
.THU NIGHT AND FRI...SE winds 5 to 10 kt. Seas 2 to 3 ft.
.FRI NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft. A chance of showers.
.SAT...SE winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to
6 ft. A chance of showers.
.SAT NIGHT AND SUN...SE winds 15 to 20 kt, becoming W. Gusts up
to 30 kt. Seas 6 to 9 ft. A chance of showers.
.SUN NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas
5 to 8 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.

$$

ANZ251-041800-
Massachusetts Bay and Ipswich Bay-
101 AM EDT Wed Oct 4 2023

.REST OF TONIGHT...NW winds around 5 kt. Seas 2 to 3 ft.
.WED...NE winds around 5 kt. Seas 2 to 3 ft.
.WED NIGHT...SE winds around 5 kt. Seas around 2 ft. Patchy fog.
Vsby 1 NM or less.
.THU...SE winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. Vsby 1 NM
or less.
.THU NIGHT AND FRI...SE winds 10 to 15 kt. Seas 2 to 3 ft.
.FRI NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. A chance of showers.
.SAT...SE winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to
5 ft. Showers likely.
.SAT NIGHT...SE winds 10 to 15 kt with gusts up to 25 kt. Seas
4 to 7 ft. Showers likely.
.SUN...W winds around 15 kt with gusts up to 25 kt. Seas 5 to
8 ft. A chance of showers.
.SUN NIGHT...SW 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.

$$

ANZ231-041800-
Cape Cod Bay-
101 AM EDT Wed Oct 4 2023

.REST OF TONIGHT...NW winds around 5 kt. Seas around 2 ft.
.WED...NE winds around 5 kt. Seas around 2 ft.
.WED NIGHT...SE winds around 5 kt. Seas around 2 ft. Patchy fog.
Vsby 1 NM or less.
.THU...SE winds 5 to 10 kt. Seas 1 foot or less. Patchy fog. Vsby
1 NM or less.
.THU NIGHT AND FRI...SE winds 5 to 10 kt. Seas around 2 ft.
.FRI NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas
around 2 ft. A chance of showers.
.SAT...SE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
4 ft. A chance of showers.
.SAT NIGHT AND SUN...SE winds 10 to 15 kt, becoming W. Gusts up
to 25 kt. Seas 3 to 5 ft. A chance of showers.
.SUN NIGHT...W 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.

$$

ANZ254-041800-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
101 AM EDT Wed Oct 4 2023

.REST OF TONIGHT...W winds around 5 kt. Seas 3 to 4 ft.
.WED...N winds around 5 kt, becoming E in the afternoon. Seas
2 to 3 ft.
.WED NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog.
Vsby 1 NM or less.
.THU...SE winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. Vsby 1 NM
or less.
.THU NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog.
.FRI...SE winds 5 to 10 kt. Seas 2 to 3 ft.
.FRI NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 ft. A chance of showers.
.SAT...SE winds around 15 kt with gusts up to 25 kt. Seas 4 to
7 ft. A chance of showers.
.SAT NIGHT AND SUN...SE winds 15 to 20 kt, becoming W. Gusts up
to 30 kt. Seas 7 to 10 ft. A chance of showers.
.SUN NIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Seas
6 to 9 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.

$$

ANZ255-041800-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
101 AM EDT Wed Oct 4 2023

.REST OF TONIGHT...W winds 5 to 10 kt. Seas 2 to 4 ft.
.WED...W winds around 5 kt, becoming S in the afternoon. Seas
2 to 3 ft.
.WED NIGHT...SE winds around 5 kt. Seas 2 to 3 ft. Patchy fog.
Vsby 1 NM or less.
.THU...SE winds 5 to 10 kt. Seas around 2 ft. Patchy fog. Vsby
1 NM or less.
.THU NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog.
.FRI...SE winds around 10 kt. Seas 2 to 4 ft.
.FRI NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 ft. A chance of showers.
.SAT...SE winds around 15 kt with gusts up to 25 kt. Seas 4 to
7 ft. A chance of showers.
.SAT NIGHT AND SUN...S winds around 15 kt, becoming W. Gusts up
to 30 kt. Seas 6 to 9 ft. A chance of showers.
.SUN NIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Seas
6 to 9 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.

$$

ANZ256-041800-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
101 AM EDT Wed Oct 4 2023

.REST OF TONIGHT...W winds 5 to 10 kt. Seas 3 to 4 ft.
.WED...W winds around 5 kt, becoming SW in the afternoon. Seas
2 to 3 ft.
.WED NIGHT...SE winds around 5 kt. Seas 2 to 3 ft. Patchy fog.
Vsby 1 NM or less.
.THU...SE winds 5 to 10 kt. Seas around 2 ft. Patchy fog. Vsby
1 to 3 NM.
.THU NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog.
.FRI...E winds 5 to 10 kt. Seas 2 to 3 ft.
.FRI NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 ft. A chance of showers.
.SAT...SE winds around 15 kt with gusts up to 25 kt. Seas 4 to
7 ft. A chance of showers.
.SAT NIGHT...SW winds around 15 kt with gusts up to 25 kt. Seas
6 to 8 ft. A chance of showers.
.SUN...W winds 15 to 20 kt with gusts up to 30 kt. Seas 6 to
8 ft. A chance of showers.
.SUN NIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Seas
5 to 8 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.

$$

ANZ232-041800-
Nantucket Sound-
101 AM EDT Wed Oct 4 2023

.REST OF TONIGHT...W winds 5 to 10 kt. Seas around 2 ft.
.WED...NW winds around 5 kt, becoming SE around 5 kt in the
afternoon. Seas around 2 ft.
.WED NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Patchy fog.
Vsby 1 NM or less.
.THU...SE winds 5 to 10 kt. Seas 1 foot or less. Patchy fog. Vsby
1 NM or less.
.THU NIGHT AND FRI...SE winds 5 to 10 kt. Seas around 2 ft.
.FRI NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. A chance of showers.
.SAT...SE winds around 15 kt with gusts up to 25 kt. Seas 2 to
4 ft. A chance of showers.
.SAT NIGHT AND SUN...S winds around 15 kt, becoming W. Gusts up
to 30 kt. Seas 4 to 6 ft. A chance of showers.
.SUN NIGHT...W winds 15 to 20 kt with gusts up to 30 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.

$$

ANZ233-041800-
Vineyard Sound-
101 AM EDT Wed Oct 4 2023

.REST OF TONIGHT...W winds around 5 kt. Seas around 2 ft.
.WED...NW winds around 5 kt, becoming S around 5 kt in the
afternoon. Seas around 2 ft. Areas of fog. Vsby 1 NM or less.
.WED NIGHT...SE winds around 5 kt. Seas around 2 ft. Patchy fog.
Vsby 1 NM or less.
.THU...SE winds 5 to 10 kt. Seas 1 foot or less. Patchy fog.
.THU NIGHT AND FRI...SE winds 5 to 10 kt. Seas 1 foot or less.
.FRI NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas
around 2 ft. A chance of showers.
.SAT...SE winds around 15 kt with gusts up to 25 kt. Seas 2 to
4 ft. A chance of showers.
.SAT NIGHT AND SUN...S winds around 15 kt, becoming W. Gusts up
to 30 kt. Seas 3 to 5 ft. A chance of showers.
.SUN NIGHT...W winds 15 to 20 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.

$$

ANZ234-041800-
Buzzards Bay-
101 AM EDT Wed Oct 4 2023

.REST OF TONIGHT...W winds around 5 kt. Seas 1 foot or less.
.WED...N winds around 5 kt, becoming S around 5 kt in the
afternoon. Seas 1 foot or less.
.WED NIGHT...SE winds around 5 kt. Seas 1 foot or less. Patchy
fog. Vsby 1 NM or less.
.THU...SE winds around 5 kt, increasing to 5 to 10 kt in the
afternoon. Seas 1 foot or less. Patchy fog.
.THU NIGHT AND FRI...SE winds 10 to 15 kt. Seas 1 foot or less.
.FRI NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas
around 2 ft. A chance of showers.
.SAT AND SAT NIGHT...SE winds 10 to 15 kt, becoming S. Gusts up
to 25 kt. Seas 2 to 4 ft. A chance of showers.
.SUN...W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft. A chance of showers.
.SUN NIGHT...W winds 15 to 20 kt with gusts up to 25 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.

$$

ANZ235-041800-
Rhode Island Sound-
101 AM EDT Wed Oct 4 2023

.REST OF TONIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Areas of
fog. Vsby 1 NM or less.
.WED...NW winds around 5 kt, becoming S in the afternoon. Seas
around 2 ft. Areas of fog. Vsby 1 NM or less.
.WED NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Patchy fog.
Vsby 1 NM or less.
.THU...SE winds 5 to 10 kt. Seas 1 foot or less. Patchy fog. Vsby
1 to 3 NM.
.THU NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Patchy fog.
.FRI...E winds 5 to 10 kt, becoming SE 10 to 15 kt in the
afternoon. Seas around 2 ft.
.FRI NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft. A chance of showers.
.SAT AND SAT NIGHT...SE winds around 15 kt, becoming SW. Gusts up
to 25 kt. Seas 4 to 6 ft. A chance of showers.
.SUN...W winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to
6 ft. A chance of showers.
.SUN NIGHT...W winds 15 to 20 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.

$$

ANZ237-041800-
Block Island Sound-
101 AM EDT Wed Oct 4 2023

.REST OF TONIGHT...W winds around 5 kt. Seas 2 to 3 ft. Areas of
fog. Vsby 1 NM or less.
.WED...NW winds around 5 kt, becoming S in the afternoon. Seas
around 2 ft. Areas of dense fog. Vsby 1 NM or less.
.WED NIGHT...SE winds around 5 kt. Seas around 2 ft. Patchy fog.
Vsby 1 NM or less.
.THU...SE winds 5 to 10 kt. Seas 1 foot or less. Patchy fog. Vsby
1 to 3 NM.
.THU NIGHT AND FRI...E winds 5 to 10 kt. Seas around 2 ft.
.FRI NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft. A chance of showers.
.SAT AND SAT NIGHT...SE winds around 15 kt, becoming SW. Gusts up
to 25 kt. Seas 4 to 6 ft. A chance of showers.
.SUN...W winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to
6 ft. A chance of showers.
.SUN NIGHT...W winds 15 to 20 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.

$$

ANZ230-041800-
Boston Harbor-
101 AM EDT Wed Oct 4 2023

.REST OF TONIGHT...NW winds around 5 kt. Waves 1 foot or less.
.WED...N winds around 5 kt, becoming E in the afternoon. Waves
1 foot or less.
.WED NIGHT...SE winds around 5 kt. Waves 1 foot or less. Patchy
fog. Vsby 1 to 3 NM.
.THU...SE winds 5 to 10 kt. Waves 1 foot or less, then around
2 ft in the afternoon. Patchy fog. Vsby 1 to 3 NM.
.THU NIGHT AND FRI...SE winds 10 to 15 kt. Waves around 2 ft.
.FRI NIGHT...SE winds 10 to 15 kt. Waves 2 to 3 ft. A chance of
showers.
.SAT AND SAT NIGHT...SE winds 10 to 15 kt with gusts up to 25 kt.
Showers likely.
.SUN...W winds around 15 kt with gusts up to 25 kt. A chance of
showers.
.SUN NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt.

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.

$$

ANZ236-041800-
Narragansett Bay-
101 AM EDT Wed Oct 4 2023

.REST OF TONIGHT...W winds around 5 kt. Waves around 2 ft.
.WED...N winds around 5 kt, becoming SE around 5 kt in the
afternoon. Waves around 2 ft.
.WED NIGHT...SE winds around 5 kt. Waves around 2 ft in the
evening, then 1 foot or less. Patchy fog. Vsby 1 NM or less.
.THU...SE winds around 5 kt, increasing to 5 to 10 kt in the
afternoon. Waves 1 foot or less.
.THU NIGHT AND FRI...SE winds 5 to 10 kt. Waves around 2 ft.
.FRI NIGHT...SE winds around 10 kt with gusts up to 20 kt. Waves
2 to 4 ft. A chance of showers.
.SAT AND SAT NIGHT...SE winds 10 to 15 kt, becoming SW. Gusts up
to 20 kt. A chance of showers.
.SUN...W winds around 15 kt with gusts up to 25 kt. A chance of
showers.
.SUN NIGHT...W winds 10 to 15 kt with gusts up to 25 kt.

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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