322
FZUS51 KBOX 160504
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
104 AM EDT Mon Sep 16 2024

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

ANZ200-161800-
104 AM EDT Mon Sep 16 2024

.Synopsis for Massachusetts and Rhode Island coastal waters...
Other than late night and/or early morning fog, high pressure over
New England provides dry, tranquil boating weather through at least
Tuesday. Then mid to late next week, low pressure develops off the
Mid Atlantic coast and may drift northward. This may yield an
increase in the risk for showers and building southeast swells.

$$

ANZ250-161800-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
104 AM EDT Mon Sep 16 2024

.REST OF TONIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: S 2 ft at 3 seconds and E 2 ft at 7 seconds.
.MON...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft
at 8 seconds and S 1 foot at 4 seconds.
.MON NIGHT...S winds 10 to 15 kt, becoming SW 5 to 10 kt after
midnight. Seas 2 to 3 ft. Wave Detail: S 2 ft at 3 seconds and E
2 ft at 8 seconds.
.TUE...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft
at 8 seconds and SW 1 foot at 3 seconds.
.TUE NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
3 ft at 8 seconds and S 1 foot at 2 seconds.
.WED...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 8 seconds and SE 2 ft at 12 seconds.
.WED NIGHT...E winds around 10 kt. Seas 2 to 3 ft. A chance of
showers.
.THU AND THU NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt.
Seas 2 to 4 ft. A chance of showers.
.FRI...NE winds around 15 kt with gusts up to 20 kt. Seas 4 to
6 ft.
.FRI NIGHT...NE winds 15 to 20 kt. Seas 6 to 7 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.

$$

ANZ251-161800-
Massachusetts Bay and Ipswich Bay-
104 AM EDT Mon Sep 16 2024

.REST OF TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: E 2 ft at 8 seconds and SE 1 foot at 4 seconds.
.MON...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft
at 8 seconds and S 1 foot at 4 seconds.
.MON NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
SE 2 ft at 3 seconds and E 2 ft at 8 seconds.
.TUE...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.
.TUE NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E
2 ft at 7 seconds and SE 1 foot at 3 seconds.
.WED...SE 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...E winds around 10 kt. Seas around 2 ft. A chance of
showers.
.THU AND THU NIGHT...NE winds 10 to 15 kt. Seas 2 to 3 ft. A
chance of showers.
.FRI AND FRI NIGHT...NE winds 10 to 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.

$$

ANZ231-161800-
Cape Cod Bay-
104 AM EDT Mon Sep 16 2024

.REST OF TONIGHT...S winds around 5 kt. Seas 1 foot or less. Wave
Detail: S 1 foot at 2 seconds and E 1 foot at 5 seconds.
.MON...S winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: S
1 foot at 3 seconds and E 1 foot at 7 seconds.
.MON NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas
1 foot or less. Wave Detail: S 1 foot at 2 seconds and E 1 foot
at 7 seconds. Patchy fog after midnight with vsby 1 to 3 NM.
.TUE...S winds around 5 kt, becoming SE in the afternoon. Seas
1 foot or less. Wave Detail: SW 1 foot at 2 seconds and E 1 foot
at 7 seconds. Patchy fog in the morning with vsby 1 to 3 NM.
.TUE NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E
2 ft at 7 seconds and S 1 foot at 2 seconds.
.WED...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE
2 ft at 8 seconds and SE 1 foot at 3 seconds. A chance of showers
in the afternoon.
.WED NIGHT...E winds 5 to 10 kt. Seas around 2 ft. A chance of
showers in the evening, then showers likely after midnight.
.THU AND THU NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt.
Seas 2 to 3 ft. A chance of showers.
.FRI AND FRI NIGHT...NE winds 10 to 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.

$$

ANZ254-161800-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
104 AM EDT Mon Sep 16 2024

.REST OF TONIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: E 2 ft at 8 seconds and S 1 foot at 7 seconds.
.MON...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft
at 8 seconds and E 2 ft at 8 seconds. Patchy fog in the afternoon
with vsby 1 to 3 NM.
.MON NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
2 ft at 7 seconds and SE 2 ft at 8 seconds. Patchy fog. Vsby 1 NM
or less.
.TUE...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 8 seconds and E 2 ft at 7 seconds. Patchy fog in the morning
with vsby 1 to 3 NM.
.TUE NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
3 ft at 8 seconds and SE 1 foot at 12 seconds.
.WED...SE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SE 3 ft
at 8 seconds and SE 2 ft at 12 seconds. A chance of showers in
the afternoon.
.WED NIGHT...E winds around 10 kt. Seas 3 to 4 ft. A chance of
showers in the evening, then showers likely after midnight.
.THU...E winds around 10 kt. Seas 3 to 4 ft. Showers likely.
.THU NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas
4 to 5 ft. A chance of showers.
.FRI AND FRI NIGHT...NE winds 15 to 20 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.

$$

ANZ255-161800-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
104 AM EDT Mon Sep 16 2024

.REST OF TONIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: SE 3 ft at 7 seconds.
.MON...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at
7 seconds and SE 2 ft at 8 seconds. Patchy fog in the afternoon
with vsby 1 to 3 NM.
.MON NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
3 ft at 9 seconds and E 2 ft at 7 seconds. Patchy fog. Vsby 1 NM
or less.
.TUE...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 9 seconds and E 1 foot at 7 seconds. Patchy fog in the morning
with vsby 1 to 3 NM.
.TUE NIGHT...E winds around 10 kt. Seas 2 to 4 ft. Wave Detail:
SE 3 ft at 8 seconds and SE 1 foot at 12 seconds.
.WED...E winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SE 3 ft
at 8 seconds and SE 1 foot at 12 seconds. A chance of showers.
.WED NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. Showers likely.
.THU...NE winds 10 to 15 kt. Seas 3 to 4 ft. Showers likely.
.THU NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas
4 to 6 ft. A chance of showers.
.FRI...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to
7 ft. A chance of showers.
.FRI NIGHT...NE 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.

$$

ANZ256-161800-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
104 AM EDT Mon Sep 16 2024

.REST OF TONIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: E 3 ft at 7 seconds.
.MON...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at
8 seconds. Patchy fog in the afternoon with vsby 1 to 3 NM.
.MON NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
3 ft at 9 seconds and E 2 ft at 7 seconds. Patchy fog. Vsby 1 NM
or less.
.TUE...E winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: SE 4 ft
at 9 seconds. Patchy fog in the morning with vsby 1 to 3 NM.
.TUE NIGHT AND WED...E winds 10 to 15 kt. Seas 3 to 5 ft. Wave
Detail: SE 4 ft at 8 seconds and SE 1 foot at 13 seconds. A
chance of showers.
.WED NIGHT...E winds around 10 kt. Seas 4 to 5 ft. Wave Detail:
SE 4 ft at 8 seconds and S 2 ft at 7 seconds. Showers likely.
.THU AND THU NIGHT...NE winds 10 to 15 kt, increasing to 15 to
20 kt. Seas 4 to 6 ft. A chance of showers.
.FRI...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to
7 ft. A chance of showers.
.FRI NIGHT...NE winds 20 to 25 kt. Seas 6 to 7 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.

$$

ANZ232-161800-
Nantucket Sound-
104 AM EDT Mon Sep 16 2024

.REST OF TONIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: SE 1 foot at 7 seconds.
.MON...SE winds around 5 kt. Seas around 2 ft. Wave Detail: SE
1 foot at 7 seconds.
.MON NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S
1 foot at 4 seconds and E 1 foot at 7 seconds. Patchy fog. Vsby
1 to 3 NM, decreasing to 1 NM or less after midnight.
.TUE...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE
2 ft at 8 seconds and SE 1 foot at 3 seconds. Patchy fog in the
morning with vsby 1 to 3 NM.
.TUE NIGHT...SE winds around 10 kt. Seas around 2 ft. Wave
Detail: SE 2 ft at 8 seconds and SE 1 foot at 4 seconds.
.WED...E winds 10 to 15 kt. Seas around 2 ft. Wave Detail: E 2 ft
at 3 seconds and SE 2 ft at 7 seconds. A chance of showers in the
afternoon.
.WED NIGHT...E winds 10 to 15 kt. Seas around 2 ft. Showers
likely.
.THU...NE winds 10 to 15 kt. Seas 2 to 3 ft. Showers likely.
.THU NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft. A chance of showers.
.FRI...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft. A chance of showers.
.FRI NIGHT...NE winds 15 to 20 kt with gusts up to 25 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.

$$

ANZ233-161800-
Vineyard Sound-
104 AM EDT Mon Sep 16 2024

.REST OF TONIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: SE 2 ft at 8 seconds and SE 1 foot at 4 seconds.
.MON...SE winds around 5 kt. Seas around 2 ft. Wave Detail: E
2 ft at 7 seconds.
.MON NIGHT...SE winds around 5 kt. Seas around 2 ft in the
evening, then 1 foot or less. Wave Detail: E 1 foot at 7 seconds
and SE 1 foot at 9 seconds. Patchy fog. Vsby 1 to 3 NM,
decreasing to 1 NM or less after midnight.
.TUE...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE
2 ft at 9 seconds and SE 1 foot at 3 seconds. Patchy fog in the
morning with vsby 1 to 3 NM.
.TUE NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
SE 2 ft at 9 seconds and SE 1 foot at 4 seconds.
.WED...E winds around 10 kt. Seas around 2 ft. Wave Detail: S
2 ft at 7 seconds and E 1 foot at 2 seconds. A chance of showers.
.WED NIGHT...E winds around 10 kt. Seas around 2 ft. Showers
likely.
.THU...NE winds around 10 kt. Seas around 2 ft. Showers likely.
.THU NIGHT AND FRI...NE winds 10 to 15 kt, increasing to 15 to
20 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of
showers.
.FRI NIGHT...NE 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.

$$

ANZ234-161800-
Buzzards Bay-
104 AM EDT Mon Sep 16 2024

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

$$

ANZ235-161800-
Rhode Island Sound-
104 AM EDT Mon Sep 16 2024

.REST OF TONIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: SE 2 ft at 8 seconds and E 1 foot at 4 seconds.
.MON...E winds 5 to 10 kt, becoming SE in the afternoon. Seas
around 2 ft. Wave Detail: SE 2 ft at 8 seconds and E 1 foot at
5 seconds.
.MON NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
SE 2 ft at 9 seconds and E 1 foot at 7 seconds. Patchy fog. Vsby
1 NM or less.
.TUE...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 9 seconds and E 1 foot at 7 seconds. Patchy fog in the morning
with vsby 1 to 3 NM.
.TUE NIGHT AND WED...E winds around 10 kt. Seas 2 to 3 ft. Wave
Detail: SE 3 ft at 8 seconds and SE 1 foot at 13 seconds. A
chance of showers.
.WED NIGHT...E winds around 10 kt. Seas 2 to 3 ft. Wave Detail:
SE 3 ft at 8 seconds and S 2 ft at 7 seconds. Showers likely.
.THU AND THU NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt.
Seas 2 to 4 ft. A chance of showers.
.FRI...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft. A chance of showers.
.FRI NIGHT...NE winds 15 to 20 kt with gusts up to 25 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.

$$

ANZ237-161800-
Block Island Sound-
104 AM EDT Mon Sep 16 2024

.REST OF TONIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: SE 2 ft at 8 seconds and E 1 foot at 4 seconds.
.MON...E winds 5 to 10 kt, becoming SE in the afternoon. Seas
around 2 ft. Wave Detail: SE 2 ft at 8 seconds and E 1 foot at
5 seconds.
.MON NIGHT...SE winds around 5 kt. Seas around 2 ft. Wave Detail:
SE 2 ft at 8 seconds and E 1 foot at 7 seconds. Patchy fog. Vsby
1 NM or less.
.TUE...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 9 seconds. Patchy fog in the morning with vsby 1 to 3 NM.
.TUE NIGHT AND WED...E winds around 10 kt. Seas 2 to 4 ft. Wave
Detail: SE 4 ft at 8 seconds. A chance of showers.
.WED NIGHT...E winds around 10 kt. Seas 3 to 4 ft. Wave Detail: S
4 ft at 7 seconds and E 1 foot at 4 seconds. Showers likely.
.THU THROUGH FRI...NE winds 15 to 20 kt with gusts up to 25 kt.
Seas 3 to 5 ft. A chance of showers.
.FRI NIGHT...NE winds 15 to 20 kt with gusts up to 25 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.

$$

ANZ230-161800-
Boston Harbor-
104 AM EDT Mon Sep 16 2024

.REST OF TONIGHT...SW winds around 5 kt. Waves 1 foot or less.
.MON...SW winds around 5 kt, becoming SE in the afternoon. Waves
1 foot or less.
.MON NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less.
.TUE...SW winds around 5 kt, becoming SE in the afternoon. Waves
1 foot or less.
.TUE NIGHT...S winds 5 to 10 kt. Waves 1 foot or less.
.WED...SE winds 5 to 10 kt. Waves 1 foot or less.
.WED NIGHT...E winds 5 to 10 kt. Waves 1 foot or less. A chance
of showers.
.THU AND THU NIGHT...NE winds 10 to 15 kt. Waves 2 to 3 ft. A
chance of showers.
.FRI AND FRI NIGHT...NE 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.

$$

ANZ236-161800-
Narragansett Bay-
104 AM EDT Mon Sep 16 2024

.REST OF TONIGHT...SE winds around 5 kt. Waves around 2 ft.
.MON...E winds around 5 kt, becoming S in the afternoon. Waves
around 2 ft.
.MON NIGHT...S winds around 5 kt. Waves around 2 ft. Patchy fog.
Vsby 1 to 3 NM.
.TUE...E winds around 5 kt, becoming SE in the afternoon. Waves
2 to 3 ft. Patchy fog in the morning with vsby 1 to 3 NM.
.TUE NIGHT...SE winds 5 to 10 kt. Waves 2 to 3 ft.
.WED...E winds 5 to 10 kt. Waves 2 to 3 ft. A chance of showers.
.WED NIGHT...E winds 5 to 10 kt. Waves 2 to 3 ft. A chance of
showers in the evening, then showers likely after midnight.
.THU THROUGH FRI...NE winds 10 to 15 kt with gusts up to 20 kt.
Waves 2 to 3 ft. A chance of showers.
.FRI NIGHT...NE 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