Coastal Waters Forecast
Issued by NWS Boston, MA

Home |  Current Version |  Previous Version |  Text Only |  Print | Product List |  Glossary Off
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
595
FZUS51 KBOX 131958
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
358 PM EDT Thu Jun 13 2024

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

ANZ200-140815-
358 PM EDT Thu Jun 13 2024

.Synopsis for Massachusetts and Rhode Island coastal waters...
High pressure provides dry weather and southwest winds through
Friday.  Then very late Fri into Fri night, an approaching cold
front will be accompanied by scattered showers and thunderstorms,
possibly accompanied by strong winds, downpours and frequent
lightning, especially near shore. Saturday morning a few showers may
linger, before the cold front exits offshore Saturday afternoon.
Meanwhile, a tropical low will likely track southeast of the 40N/70W
benchmark Saturday, then across eastern Georges Bank Sat night and
finally out to sea. High pressure builds over New England Sunday,
then offshore Monday. This will yield a prolong period of SSW flow
next week along with a very warm airmass.

$$

ANZ250-140815-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
358 PM EDT Thu Jun 13 2024

.TONIGHT...SW winds around 15 kt with gusts up to 20 kt. Seas
2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 3 ft at
7 seconds.
.FRI...S winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 3 ft at 7 seconds.
.FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt,
becoming W 5 to 10 kt after midnight. Seas 2 to 4 ft. Wave
Detail: SE 3 ft at 7 seconds and SW 2 ft at 4 seconds. Patchy
fog. Showers likely. Vsby 1 to 3 NM.
.SAT...N winds around 10 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft
at 4 seconds and SE 2 ft at 8 seconds. Showers likely, mainly in
the morning.
.SAT NIGHT...N winds 5 to 10 kt, increasing to 10 to 15 kt with
gusts up to 20 kt after midnight. Seas 2 to 4 ft. Wave Detail: N
3 ft at 4 seconds and SE 2 ft at 8 seconds.
.SUN AND SUN NIGHT...SW winds 10 to 15 kt. Seas 2 to 4 ft. Wave
Detail: N 3 ft at 5 seconds and SE 2 ft at 9 seconds.
.MON THROUGH TUE NIGHT...SW 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.

$$

ANZ251-140815-
Massachusetts Bay and Ipswich Bay-
358 PM EDT Thu Jun 13 2024

.TONIGHT...SW 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 2 ft at
6 seconds.
.FRI...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: SE 3 ft at 6 seconds and SW 1 foot at
3 seconds. A chance of showers in the afternoon.
.FRI NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
SE 2 ft at 7 seconds and SW 1 foot at 3 seconds. Patchy fog.
Showers likely. Vsby 1 to 3 NM.
.SAT...N winds around 10 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft
at 4 seconds and E 2 ft at 7 seconds. Showers likely, mainly in
the morning.
.SAT NIGHT...N winds 5 to 10 kt, increasing to 10 to 15 kt after
midnight. Seas 2 to 3 ft. Wave Detail: N 2 ft at 4 seconds and E
1 foot at 7 seconds.
.SUN AND SUN NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave
Detail: NE 2 ft at 5 seconds and E 1 foot at 14 seconds.
.MON THROUGH TUE NIGHT...SW 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.

$$

ANZ231-140815-
Cape Cod Bay-
358 PM EDT Thu Jun 13 2024

.TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
around 2 ft. Wave Detail: SW 1 foot at 3 seconds and SE 1 foot at
7 seconds.
.FRI...SW winds 10 to 15 kt with gusts up to 25 kt. Seas around
2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 2 ft at 7 seconds.
.FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt,
becoming W 5 to 10 kt after midnight. Seas around 2 ft. Wave
Detail: SW 2 ft at 3 seconds and SE 2 ft at 7 seconds. Patchy
fog. Showers likely.
.SAT...N winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: N
1 foot at 4 seconds and SE 1 foot at 7 seconds. Showers likely,
mainly in the morning. Patchy fog in the morning.
.SAT NIGHT...N winds 5 to 10 kt, increasing to 10 to 15 kt after
midnight. Seas around 2 ft. Wave Detail: N 2 ft at 4 seconds and
SE 1 foot at 7 seconds.
.SUN AND SUN NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: N 2 ft at 4 seconds and SE 2 ft at 8 seconds.
.MON THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to
20 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.

$$

ANZ254-140815-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
358 PM EDT Thu Jun 13 2024

.TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: SE 3 ft at 8 seconds and SW 2 ft at 4 seconds.
Patchy dense fog. Vsby 1 NM or less.
.FRI...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: SE 3 ft at 8 seconds and SW 2 ft at 4 seconds.
Patchy dense fog in the morning with vsby 1 NM or less.
.FRI NIGHT...S winds around 10 kt with gusts up to 20 kt,
becoming W after midnight. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 7 seconds and SW 2 ft at 4 seconds. Patchy fog. A chance of
showers in the evening, then showers likely after midnight. Vsby
1 NM or less in the evening.
.SAT...N winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: N 2 ft
at 4 seconds and SE 2 ft at 7 seconds. Showers likely, mainly in
the morning. Patchy fog in the morning.
.SAT NIGHT AND SUN...NE winds 10 to 15 kt with gusts up to 20 kt.
Seas 3 to 4 ft. Wave Detail: N 3 ft at 5 seconds and SE 3 ft at
9 seconds.
.SUN NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
3 ft at 8 seconds and N 2 ft at 4 seconds.
.MON THROUGH TUE NIGHT...SW 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.

$$

ANZ255-140815-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
358 PM EDT Thu Jun 13 2024

.TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: SE 3 ft at 8 seconds and SW 2 ft at 4 seconds.
Patchy dense fog. Vsby 1 NM or less.
.FRI...S winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 8 seconds and SW 2 ft at 4 seconds. Patchy dense fog in the
morning. Patchy fog in the afternoon. Vsby 1 NM or less,
increasing to 1 to 3 NM in the afternoon.
.FRI NIGHT...S winds 5 to 10 kt, becoming W after midnight. Seas
2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and SW 2 ft at
4 seconds. Patchy fog. Showers likely. Vsby 1 NM or less in the
evening.
.SAT...N winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: N 2 ft
at 3 seconds and W 2 ft at 5 seconds. Showers likely, mainly in
the morning. Patchy fog in the morning.
.SAT NIGHT...N winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: S
3 ft at 8 seconds and NE 2 ft at 4 seconds.
.SUN AND SUN NIGHT...SW winds 10 to 15 kt. Seas 2 to 4 ft. Wave
Detail: SE 3 ft at 8 seconds and N 2 ft at 4 seconds.
.MON THROUGH TUE NIGHT...SW 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.

$$

ANZ256-140815-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
358 PM EDT Thu Jun 13 2024

.TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
around 3 ft. Wave Detail: SE 3 ft at 8 seconds and SW 2 ft at
4 seconds. Patchy dense fog. Vsby 1 NM or less.
.FRI...S winds 10 to 15 kt. Seas around 3 ft. Wave Detail: SE
3 ft at 8 seconds and SW 2 ft at 5 seconds.
.FRI NIGHT...S winds 5 to 10 kt, becoming W after midnight. Seas
2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at
8 seconds. Patchy fog. Showers likely.
.SAT...N winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft
at 3 seconds and W 2 ft at 5 seconds. Showers likely in the
morning.
.SAT NIGHT...NE winds 5 to 10 kt, becoming N 10 to 15 kt after
midnight. Seas 3 to 4 ft. Wave Detail: S 3 ft at 8 seconds and NE
2 ft at 3 seconds.
.SUN AND SUN NIGHT...S winds 10 to 15 kt. Seas 2 to 4 ft. Wave
Detail: SE 3 ft at 8 seconds and N 2 ft at 4 seconds.
.MON THROUGH TUE NIGHT...SW winds 10 to 15 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.

$$

ANZ232-140815-
Nantucket Sound-
358 PM EDT Thu Jun 13 2024

.TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
around 2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 1 foot at
8 seconds. Patchy dense fog. Vsby 1 NM or less.
.FRI...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft. Wave Detail: SW 2 ft at 3 seconds and S 1 foot at
8 seconds.
.FRI NIGHT...SW winds around 10 kt, becoming W after midnight.
Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 1 foot
at 7 seconds. A chance of showers in the evening, then showers
likely after midnight. Patchy fog after midnight. Vsby 1 to 3 NM
in the evening.
.SAT...N winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: N
2 ft at 4 seconds and SE 1 foot at 7 seconds. Showers likely,
mainly in the morning. Patchy fog in the morning.
.SAT NIGHT...N winds 10 to 15 kt. Seas around 2 ft. Wave Detail:
N 2 ft at 3 seconds and SE 1 foot at 8 seconds.
.SUN AND SUN NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Wave
Detail: N 2 ft at 4 seconds and SE 1 foot at 8 seconds.
.MON THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to
20 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.

$$

ANZ233-140815-
Vineyard Sound-
358 PM EDT Thu Jun 13 2024

.TONIGHT...SW winds around 10 kt. Gusts up to 20 kt this evening.
Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and S 2 ft at
7 seconds. Patchy dense fog. Vsby 1 NM or less.
.FRI...SW winds 10 to 15 kt with gusts up to 25 kt. Seas around
2 ft. Wave Detail: SW 2 ft at 4 seconds and S 2 ft at 7 seconds.
.FRI NIGHT...SW winds around 10 kt, becoming W after midnight.
Seas around 2 ft. Wave Detail: S 2 ft at 6 seconds. Patchy fog.
Showers likely.
.SAT...N winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: N
1 foot at 2 seconds and NW 1 foot at 5 seconds. Showers likely,
mainly in the morning.
.SAT NIGHT...N winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S
2 ft at 8 seconds and NE 1 foot at 3 seconds.
.SUN AND SUN NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: S 2 ft at 8 seconds and N 1 foot at 3 seconds.
.MON THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to
20 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.

$$

ANZ234-140815-
Buzzards Bay-
358 PM EDT Thu Jun 13 2024

.TONIGHT...SW winds around 10 kt. Gusts up to 20 kt this evening.
Seas around 2 ft. Wave Detail: SW 1 foot at 4 seconds and S
1 foot at 8 seconds. Patchy dense fog. Vsby 1 NM or less.
.FRI...SW winds 10 to 15 kt with gusts up to 25 kt. Seas around
2 ft. Wave Detail: SW 2 ft at 4 seconds and S 1 foot at
7 seconds. Patchy fog in the morning with vsby 1 NM or less.
.FRI NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas
around 2 ft. Wave Detail: S 2 ft at 6 seconds. Patchy fog.
Showers likely.
.SAT...N winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: N
1 foot at 2 seconds and NW 1 foot at 5 seconds. Showers likely,
mainly in the morning.
.SAT NIGHT...N winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
NE 1 foot at 3 seconds and SW 1 foot at 5 seconds.
.SUN AND SUN NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: S 2 ft at 8 seconds and N 1 foot at 3 seconds.
.MON THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to
20 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.

$$

ANZ235-140815-
Rhode Island Sound-
358 PM EDT Thu Jun 13 2024

.TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt this evening.
Seas 2 to 3 ft. Wave Detail: S 3 ft at 8 seconds and SW 2 ft at
4 seconds. Patchy dense fog. Vsby 1 NM or less.
.FRI...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 2 to 3 ft. Wave Detail: S 3 ft at 6 seconds. Patchy dense
fog in the morning with vsby 1 NM or less.
.FRI NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas
2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at
7 seconds. Patchy fog. Showers likely.
.SAT...N winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft at
3 seconds and W 2 ft at 5 seconds. Showers likely in the morning.
.SAT NIGHT...N winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S
3 ft at 8 seconds and NE 1 foot at 3 seconds.
.SUN AND SUN NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: SE 3 ft at 8 seconds and N 2 ft at 3 seconds.
.MON THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to
20 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.

$$

ANZ237-140815-
Block Island Sound-
358 PM EDT Thu Jun 13 2024

.TONIGHT...SW winds around 10 kt with gusts up to 20 kt. Seas
2 to 3 ft. Wave Detail: S 3 ft at 8 seconds and SW 2 ft at
4 seconds. Patchy dense fog this evening with vsby 1 NM or less.
.FRI...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and S 2 ft at
8 seconds.
.FRI NIGHT...SW winds 5 to 10 kt, becoming NW after midnight.
Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at
7 seconds. Patchy fog. Showers likely.
.SAT...N winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft
at 7 seconds and W 1 foot at 5 seconds. Showers likely in the
morning.
.SAT NIGHT...N winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S
2 ft at 8 seconds and NE 1 foot at 3 seconds.
.SUN AND SUN NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: SE 3 ft at 8 seconds and N 1 foot at 3 seconds.
.MON THROUGH TUE NIGHT...SW winds 10 to 15 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.

$$

ANZ230-140815-
Boston Harbor-
358 PM EDT Thu Jun 13 2024

.TONIGHT...SW winds around 10 kt. Waves 1 foot or less, then
around 2 ft after midnight.
.FRI...SW winds around 10 kt with gusts up to 20 kt. Waves around
2 ft. A chance of showers in the afternoon.
.FRI NIGHT...W winds 5 to 10 kt. Waves around 2 ft in the
evening, then 1 foot or less. Patchy fog. Showers. Vsby 1 to
3 NM.
.SAT...N winds around 10 kt. Waves around 2 ft. Showers likely,
mainly in the morning.
.SAT NIGHT...N winds 5 to 10 kt. Waves 1 foot or less.
.SUN AND SUN NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less.
.MON THROUGH TUE NIGHT...SW winds 10 to 15 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.

$$

ANZ236-140815-
Narragansett Bay-
358 PM EDT Thu Jun 13 2024

.TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt this evening.
Waves around 2 ft.
.FRI...SW winds 10 to 15 kt with gusts up to 20 kt. Waves around
2 ft.
.FRI NIGHT...SW winds 5 to 10 kt, becoming W after midnight.
Waves around 2 ft. Patchy fog. Showers likely.
.SAT...N winds 5 to 10 kt. Waves around 2 ft. Showers likely in
the morning.
.SAT NIGHT...N winds 5 to 10 kt. Waves 2 to 3 ft.
.SUN AND SUN NIGHT...SW winds 5 to 10 kt. Waves 2 to 3 ft.
.MON THROUGH TUE NIGHT...SW winds 10 to 15 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.

$$

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