Coastal Waters Forecast
Issued by NWS Boston, MA

Home |  Current Version |  Previous Version |  Text Only |  Print | Product List |  Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
891
FZUS51 KBOX 111105
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
705 AM EDT Tue Jun 11 2024

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

ANZ200-120000-
705 AM EDT Tue Jun 11 2024

.Synopsis for Massachusetts and Rhode Island coastal waters...
Tranquil boating conditions today with light WNW winds turning
southerly this afternoon. Winds remain light southerly through
wednesday. Areas of Fog are possible east of the Cape and Islands
tonight and wednesday. Dry conditions continue Thursday. Low chance
for showers and thunderstorms Friday.

$$

ANZ250-120000-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
705 AM EDT Tue Jun 11 2024

.TODAY...W winds around 5 kt, becoming S this afternoon. Seas
around 2 ft. Wave Detail: SE 2 ft at 8 seconds and NW 1 foot at
3 seconds.
.TONIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE
2 ft at 8 seconds and NW 1 foot at 3 seconds.
.WED...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft
at 8 seconds and SE 1 foot at 3 seconds.
.WED NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
S 2 ft at 7 seconds and SE 2 ft at 8 seconds.
.THU AND THU NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt.
Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 2 ft at
8 seconds.
.FRI AND FRI NIGHT...S winds 15 to 20 kt, becoming SW 10 to
15 kt. Gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: SW 3 ft at
4 seconds and E 2 ft at 8 seconds. A chance of showers. Vsby 1 to
3 NM.
.SAT AND SAT NIGHT...N winds 5 to 10 kt, becoming NW. 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.

$$

ANZ251-120000-
Massachusetts Bay and Ipswich Bay-
705 AM EDT Tue Jun 11 2024

.TODAY...NW winds around 5 kt, becoming SE this afternoon. Seas
1 foot or less. Wave Detail: NW 1 foot at 2 seconds and S 1 foot
at 5 seconds.
.TONIGHT...S winds around 5 kt, becoming SW around 5 kt after
midnight. Seas 1 foot or less. Wave Detail: SE 1 foot at
3 seconds and SE 1 foot at 7 seconds.
.WED...SW winds around 5 kt, becoming SE in the afternoon. Seas
1 foot or less. Wave Detail: SE 1 foot at 6 seconds.
.WED NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
S 1 foot at 3 seconds and E 1 foot at 8 seconds.
.THU AND THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and E 2 ft at
8 seconds.
.FRI AND FRI NIGHT...SW winds around 15 kt, becoming W. Gusts up
to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and E
2 ft at 8 seconds. A chance of showers. Vsby 1 to 3 NM.
.SAT AND SAT NIGHT...NE winds 5 to 10 kt, becoming NW. 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.

$$

ANZ231-120000-
Cape Cod Bay-
705 AM EDT Tue Jun 11 2024

.TODAY...NW winds around 5 kt, becoming SE this afternoon. Seas
1 foot or less. Wave Detail: NW 1 foot at 3 seconds and S 1 foot
at 7 seconds.
.TONIGHT...S winds around 5 kt. Seas 1 foot or less. Wave Detail:
NW 1 foot at 3 seconds and SE 1 foot at 6 seconds.
.WED...S winds around 5 kt, increasing to 5 to 10 kt in the
afternoon. Seas 1 foot or less. Wave Detail: SW 1 foot at
2 seconds and SE 1 foot at 7 seconds.
.WED NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
SW 1 foot at 3 seconds and SE 1 foot at 8 seconds.
.THU AND THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and SE 1 foot
at 8 seconds.
.FRI...SW winds around 15 kt with gusts up to 25 kt. Seas 2 to
4 ft. Wave Detail: SW 2 ft at 4 seconds and E 1 foot at
8 seconds. Scattered showers.
.FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. A chance of showers.
.SAT AND SAT NIGHT...N winds 5 to 10 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.

$$

ANZ254-120000-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
705 AM EDT Tue Jun 11 2024

.TODAY...W winds around 5 kt, becoming S this afternoon. Seas
2 to 3 ft. Wave Detail: S 2 ft at 7 seconds and NW 1 foot at
3 seconds.
.TONIGHT...S winds around 5 kt. Seas around 2 ft. Wave Detail: SE
2 ft at 8 seconds and NW 1 foot at 3 seconds. Patchy fog. Vsby
1 NM or less.
.WED...S winds around 5 kt, increasing to 5 to 10 kt in the
afternoon. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and
SW 1 foot at 2 seconds. Patchy fog. Vsby 1 NM or less, increasing
to 1 to 3 NM in the afternoon.
.WED NIGHT...SW winds around 10 kt. Seas 2 to 3 ft. Wave Detail:
S 2 ft at 7 seconds and SE 2 ft at 8 seconds.
.THU AND THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 2 ft at
8 seconds.
.FRI...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft. Wave Detail: SW 4 ft at 5 seconds and E 2 ft at 8 seconds.
Scattered showers.
.FRI NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas
3 to 5 ft. Showers likely.
.SAT...N winds 5 to 10 kt. Seas 3 to 4 ft. A chance of showers.
.SAT NIGHT...N 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.

$$

ANZ255-120000-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
705 AM EDT Tue Jun 11 2024

.TODAY...W winds around 5 kt, becoming S this afternoon. Seas
2 to 3 ft. Wave Detail: S 2 ft at 7 seconds and SE 2 ft at
8 seconds.
.TONIGHT...S winds around 5 kt. Seas 2 to 3 ft. Wave Detail: S
2 ft at 7 seconds and SE 2 ft at 8 seconds. Patchy dense fog.
Vsby 1 NM or less.
.WED...S winds around 5 kt, becoming SW in the afternoon. Seas
around 2 ft. Wave Detail: S 2 ft at 7 seconds and SW 1 foot at
2 seconds. Patchy fog. Vsby 1 NM or less, increasing to 1 to 3 NM
in the afternoon.
.WED NIGHT...SW winds around 10 kt. Seas around 2 ft. Wave
Detail: SW 2 ft at 3 seconds and S 2 ft at 7 seconds. Patchy fog
in the evening with vsby 1 to 3 NM.
.THU AND THU NIGHT...SW winds 15 to 20 kt. Seas 2 to 4 ft. Wave
Detail: S 4 ft at 6 seconds and SW 2 ft at 3 seconds.
.FRI...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
4 ft. Wave Detail: SW 4 ft at 5 seconds and E 2 ft at 8 seconds.
Scattered showers.
.FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 4 ft. Showers likely.
.SAT...N winds around 10 kt. Seas 3 to 4 ft. A chance of showers.
.SAT NIGHT...N winds around 10 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.

$$

ANZ256-120000-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
705 AM EDT Tue Jun 11 2024

.TODAY...NW winds around 5 kt, becoming SW this afternoon. Seas
2 to 3 ft. Wave Detail: S 2 ft at 7 seconds and SE 2 ft at
8 seconds.
.TONIGHT...SW winds around 5 kt. Seas 2 to 3 ft. Wave Detail: S
2 ft at 7 seconds.
.WED...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE
2 ft at 8 seconds and SW 1 foot at 2 seconds.
.WED NIGHT...SW winds around 10 kt. Seas around 2 ft. Wave
Detail: SE 2 ft at 7 seconds and SW 1 foot at 3 seconds.
.THU AND THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 4 ft. Wave Detail: S 4 ft at 6 seconds and SW 1 foot at
3 seconds.
.FRI...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to
5 ft. Wave Detail: S 4 ft at 7 seconds and W 1 foot at 3 seconds.
Scattered showers.
.FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 ft. A chance of showers.
.SAT AND 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.

$$

ANZ232-120000-
Nantucket Sound-
705 AM EDT Tue Jun 11 2024

.TODAY...W winds around 5 kt, becoming S this afternoon. Seas
around 2 ft. Wave Detail: NW 1 foot at 3 seconds and S 1 foot at
7 seconds.
.TONIGHT...S winds around 5 kt. Seas around 2 ft. Wave Detail: SW
1 foot at 2 seconds and SE 1 foot at 7 seconds.
.WED...SW winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: SW
1 foot at 2 seconds and S 1 foot at 7 seconds.
.WED NIGHT...SW winds around 10 kt. Seas around 2 ft. Wave
Detail: SW 1 foot at 3 seconds and SE 1 foot at 8 seconds.
.THU AND THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot
at 8 seconds.
.FRI...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
3 ft. Wave Detail: SW 3 ft at 4 seconds and E 1 foot at
7 seconds. Scattered showers.
.FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. A chance of showers.
.SAT...N winds around 10 kt. Seas around 2 ft. A chance of
showers.
.SAT NIGHT...N winds 5 to 10 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.

$$

ANZ233-120000-
Vineyard Sound-
705 AM EDT Tue Jun 11 2024

.TODAY...NW winds around 5 kt, becoming SW this afternoon. Seas
around 2 ft. Wave Detail: NW 1 foot at 3 seconds and S 1 foot at
7 seconds.
.TONIGHT...SW winds around 5 kt. Seas around 2 ft. Wave Detail: S
2 ft at 7 seconds and SW 1 foot at 2 seconds.
.WED...SW winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: SW
1 foot at 2 seconds and S 1 foot at 7 seconds.
.WED NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
SW 1 foot at 3 seconds and S 1 foot at 7 seconds.
.THU AND THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: S 3 ft at 6 seconds and SW 1 foot at
3 seconds.
.FRI...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft. Wave Detail: S 3 ft at 5 seconds. Scattered showers.
.FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. A chance of showers.
.SAT AND SAT NIGHT...NE winds 5 to 10 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.

$$

ANZ234-120000-
Buzzards Bay-
705 AM EDT Tue Jun 11 2024

.TODAY...W winds around 5 kt, becoming SW this afternoon. Seas
1 foot or less. Wave Detail: W 1 foot at 3 seconds and S 1 foot
at 7 seconds.
.TONIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. Wave Detail:
SW 1 foot at 2 seconds and S 1 foot at 6 seconds.
.WED...SW winds around 5 kt, increasing to 5 to 10 kt in the
afternoon. Seas 1 foot or less. Wave Detail: SW 1 foot at
2 seconds and S 1 foot at 7 seconds.
.WED NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
SW 1 foot at 3 seconds and S 1 foot at 6 seconds.
.THU AND THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot
at 7 seconds.
.FRI...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 1 foot at
7 seconds. Scattered showers.
.FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. A chance of showers.
.SAT AND SAT NIGHT...NE winds 5 to 10 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.

$$

ANZ235-120000-
Rhode Island Sound-
705 AM EDT Tue Jun 11 2024

.TODAY...NW winds around 5 kt, becoming S this afternoon. Seas
around 2 ft. Wave Detail: S 2 ft at 7 seconds and SE 2 ft at
8 seconds.
.TONIGHT...SW winds around 5 kt. Seas around 2 ft. Wave Detail: S
2 ft at 7 seconds and SW 1 foot at 2 seconds.
.WED...SW winds around 5 kt, increasing to 5 to 10 kt in the
afternoon. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and
SW 1 foot at 2 seconds.
.WED NIGHT...SW winds around 10 kt. Seas around 2 ft. Wave
Detail: S 2 ft at 7 seconds and SW 1 foot at 3 seconds.
.THU AND THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: S 3 ft at 6 seconds and SW 1 foot at
3 seconds.
.FRI...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
4 ft. Wave Detail: SW 4 ft at 5 seconds. Scattered showers.
.FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft. A chance of showers.
.SAT AND 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.

$$

ANZ237-120000-
Block Island Sound-
705 AM EDT Tue Jun 11 2024

.TODAY...NW winds around 5 kt, becoming SW this afternoon. Seas
around 2 ft. Wave Detail: SE 2 ft at 7 seconds and NW 1 foot at
2 seconds.
.TONIGHT...SW winds around 5 kt. Seas around 2 ft. Wave Detail: S
2 ft at 7 seconds and SE 2 ft at 8 seconds.
.WED...W winds around 5 kt, becoming SW in the afternoon. Seas
around 2 ft. Wave Detail: SE 2 ft at 8 seconds and SW 1 foot at
2 seconds.
.WED NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
S 2 ft at 7 seconds and SW 1 foot at 3 seconds.
.THU AND THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds and SW 1 foot at
2 seconds.
.FRI AND FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 4 ft. Wave Detail: S 3 ft at 7 seconds and W 1 foot at
3 seconds. A chance of showers.
.SAT AND 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.

$$

ANZ230-120000-
Boston Harbor-
705 AM EDT Tue Jun 11 2024

.TODAY...NW winds around 5 kt, becoming E this afternoon. Waves
1 foot or less. A slight chance of showers this afternoon.
.TONIGHT...SE winds around 5 kt, becoming SW around 5 kt after
midnight. Waves 1 foot or less.
.WED...W winds around 5 kt, becoming SE in the afternoon. Waves
1 foot or less.
.WED NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less.
.THU AND THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt.
Waves around 2 ft.
.FRI AND FRI NIGHT...SW winds around 15 kt, becoming W. Gusts up
to 20 kt. Waves around 2 ft. A chance of showers and scattered
tstms.
.SAT AND SAT NIGHT...N winds 5 to 10 kt. Waves 1 foot or less.

Winds and waves higher in and near tstms.

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.

$$

ANZ236-120000-
Narragansett Bay-
705 AM EDT Tue Jun 11 2024

.TODAY...NW winds around 5 kt, becoming S this afternoon. Waves
1 foot or less, then around 2 ft this afternoon. A slight chance
of showers this afternoon.
.TONIGHT...S winds 5 to 10 kt, becoming SW after midnight. Waves
around 2 ft in the evening, then 1 foot or less.
.WED...W winds around 5 kt, becoming SW in the afternoon. Waves
1 foot or less.
.WED NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less.
.THU AND THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt.
Waves 2 to 3 ft.
.FRI...SW winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to
4 ft. Scattered showers.
.FRI NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Waves
2 to 4 ft. A chance of showers.
.SAT AND SAT NIGHT...N winds 5 to 10 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