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
043
FZUS51 KBOX 182003
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
403 PM EDT Fri Apr 18 2025

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

ANZ200-190900-
403 PM EDT Fri Apr 18 2025

.Synopsis for Massachusetts and Rhode Island coastal waters...
High pressure moves offshore for Saturday. A cold front will cross
the waters late Saturday night. Another high pressure builds over
the region for Monday, with another front passing through on
Tuesday.

$$

ANZ250-190900-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
403 PM EDT Fri Apr 18 2025

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

.TONIGHT...S winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to
5 ft. Wave Detail: S 4 ft at 4 seconds and SE 2 ft at 8 seconds.
.SAT...S winds 15 to 20 kt, becoming SW 20 to 25 kt in the
afternoon. Gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: S 4 ft
at 6 seconds.
.SAT NIGHT...SW winds 15 to 20 kt, becoming W after midnight.
Gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: S 4 ft at
6 seconds.
.SUN...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to
5 ft. Wave Detail: NW 4 ft at 4 seconds and SE 2 ft at 8 seconds.
.SUN NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft. Wave Detail: NW 3 ft at 4 seconds and SE 1 foot at
7 seconds.
.MON...N winds 5 to 10 kt, becoming SE in the afternoon. Seas
2 to 3 ft. Wave Detail: NW 2 ft at 4 seconds and E 2 ft at
7 seconds.
.MON NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. A chance of showers after midnight.
.TUE...S winds around 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. A chance of showers.
.TUE NIGHT AND WED...W winds 10 to 15 kt with gusts up to 20 kt,
becoming N 5 to 10 kt. Seas 2 to 4 ft.
.WED NIGHT...S winds around 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.

$$

ANZ251-190900-
Massachusetts Bay and Ipswich Bay-
403 PM EDT Fri Apr 18 2025

.TONIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
3 ft. Wave Detail: S 3 ft at 4 seconds and E 1 foot at 8 seconds.
.SAT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
3 ft. Wave Detail: S 3 ft at 4 seconds and SE 2 ft at 8 seconds.
.SAT NIGHT...SW winds 10 to 15 kt, becoming W 15 to 20 kt after
midnight. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft
at 4 seconds and SE 2 ft at 7 seconds.
.SUN...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 SE 1 foot at
8 seconds.
.SUN NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas around 2 ft. Wave
Detail: NW 2 ft at 4 seconds and NE 1 foot at 7 seconds.
.MON...N winds 5 to 10 kt, becoming SE in the afternoon. Seas
1 foot or less, then around 2 ft in the afternoon. Wave Detail: N
1 foot at 4 seconds, becoming SE 1 foot at 2 seconds and NE
1 foot at 6 seconds.
.MON NIGHT...S winds 10 to 15 kt. Seas around 2 ft. Showers
likely after midnight.
.TUE...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. A chance of showers.
.TUE NIGHT THROUGH WED NIGHT...S 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.

$$

ANZ231-190900-
Cape Cod Bay-
403 PM EDT Fri Apr 18 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 11 PM EDT THIS EVENING
THROUGH SATURDAY EVENING...

.TONIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft. Wave Detail: S 2 ft at 4 seconds.
.SAT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to
4 ft. Wave Detail: SW 3 ft at 4 seconds and S 3 ft at 9 seconds.
.SAT NIGHT...SW winds 15 to 20 kt, becoming W 10 to 15 kt after
midnight. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft
at 4 seconds and S 3 ft at 8 seconds.
.SUN...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
3 ft. Wave Detail: NW 2 ft at 4 seconds and S 2 ft at 8 seconds.
.SUN NIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NW
2 ft at 5 seconds and S 1 foot at 8 seconds.
.MON...N winds 5 to 10 kt, becoming SE in the afternoon. Seas
around 2 ft in the morning, then 1 foot or less. Wave Detail: N
1 foot at 5 seconds.
.MON NIGHT...S winds 10 to 15 kt. Seas 1 foot or less, then
around 2 ft after midnight. A chance of showers after midnight.
.TUE...S winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft. A chance of showers.
.TUE NIGHT THROUGH WED NIGHT...S 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.

$$

ANZ254-190900-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
403 PM EDT Fri Apr 18 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 11 PM EDT THIS EVENING
THROUGH SATURDAY EVENING...

.TONIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft, building to 4 to 6 ft after midnight. Wave Detail: S 3 ft
at 4 seconds and SE 1 foot at 8 seconds, becoming S 5 ft at
5 seconds and SE 1 foot at 8 seconds.
.SAT...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to
8 ft. Wave Detail: SW 7 ft at 6 seconds and S 5 ft at 12 seconds.
.SAT NIGHT...SW winds 20 to 25 kt, becoming W 15 to 20 kt after
midnight. Gusts up to 30 kt. Seas 5 to 8 ft. Wave Detail: S 7 ft
at 8 seconds and SW 4 ft at 5 seconds.
.SUN...NW winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: S 4 ft
at 8 seconds and NW 3 ft at 4 seconds.
.SUN NIGHT...NW winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 3 to 5 ft. Wave Detail: NW 3 ft at 5 seconds and S
3 ft at 8 seconds.
.MON...N winds 5 to 10 kt, becoming S in the afternoon. Seas 2 to
3 ft. Wave Detail: NW 2 ft at 5 seconds and SE 2 ft at 7 seconds.
.MON NIGHT...S winds 5 to 10 kt, increasing to 10 to 15 kt with
gusts up to 20 kt after midnight. Seas 2 to 3 ft. A chance of
showers after midnight.
.TUE AND TUE NIGHT...S winds around 15 kt, becoming W. Gusts up
to 20 kt. Seas 3 to 4 ft. A chance of showers.
.WED AND WED NIGHT...N winds 5 to 10 kt, becoming S. 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.

$$

ANZ255-190900-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
403 PM EDT Fri Apr 18 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 11 PM EDT THIS EVENING
THROUGH SATURDAY EVENING...

.TONIGHT...S winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to
4 ft, building to 4 to 6 ft after midnight. Wave Detail: SW 4 ft
at 5 seconds and SE 1 foot at 8 seconds, becoming SW 6 ft at
6 seconds and SE 1 foot at 9 seconds.
.SAT...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 6 to
9 ft. Wave Detail: SW 8 ft at 7 seconds and S 8 ft at 10 seconds.
.SAT NIGHT...SW winds 20 to 25 kt, becoming W 15 to 20 kt after
midnight. Gusts up to 30 kt. Seas 5 to 8 ft. Wave Detail: SW 8 ft
at 8 seconds and SW 3 ft at 5 seconds.
.SUN...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 5 to
7 ft. Wave Detail: SW 6 ft at 8 seconds and NW 1 foot at
4 seconds.
.SUN NIGHT...NW winds around 10 kt. Seas 3 to 5 ft. Wave Detail:
SW 4 ft at 8 seconds and SW 3 ft at 7 seconds.
.MON...N winds 5 to 10 kt, becoming S in the afternoon. Seas 2 to
3 ft. Wave Detail: SW 2 ft at 7 seconds and E 2 ft at 7 seconds.
.MON NIGHT...S winds 5 to 10 kt, increasing to 10 to 15 kt with
gusts up to 20 kt after midnight. Seas 2 to 3 ft. A chance of
showers after midnight.
.TUE...S winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft. A chance of showers.
.TUE NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 ft.
.WED AND WED NIGHT...NW winds 5 to 10 kt, becoming S. 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.

$$

ANZ256-190900-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
403 PM EDT Fri Apr 18 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 11 PM EDT THIS EVENING
THROUGH SATURDAY EVENING...

.TONIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to
4 ft, building to 4 to 6 ft after midnight. Wave Detail: SW 4 ft
at 5 seconds and SE 1 foot at 9 seconds, becoming SW 6 ft at
6 seconds and SE 1 foot at 9 seconds.
.SAT...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 6 to
8 ft. Wave Detail: SW 8 ft at 8 seconds.
.SAT NIGHT...SW winds 20 to 25 kt, becoming W 15 to 20 kt after
midnight. Gusts up to 30 kt. Seas 6 to 8 ft. Wave Detail: SW 8 ft
at 8 seconds and SW 1 foot at 4 seconds.
.SUN...NW winds 10 to 15 kt. Gusts up to 25 kt in the morning.
Seas 5 to 7 ft, subsiding to 4 to 5 ft in the afternoon. Wave
Detail: S 6 ft at 8 seconds and NW 2 ft at 4 seconds, becoming S
5 ft at 8 seconds and NW 2 ft at 4 seconds.
.SUN NIGHT...NW winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: S
4 ft at 8 seconds and W 3 ft at 7 seconds.
.MON...NE winds 5 to 10 kt, becoming S in the afternoon. Seas
2 to 3 ft. Wave Detail: S 2 ft at 7 seconds.
.MON NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt after
midnight. Seas 2 to 4 ft. A chance of showers after midnight.
.TUE...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft. A chance of showers.
.TUE NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 ft.
.WED AND WED NIGHT...W winds 5 to 10 kt, becoming SW. 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.

$$

ANZ232-190900-
Nantucket Sound-
403 PM EDT Fri Apr 18 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 3 AM EDT SATURDAY THROUGH
SATURDAY EVENING...

.TONIGHT...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
8 seconds.
.SAT...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to
5 ft. Wave Detail: SW 4 ft at 5 seconds and S 3 ft at 8 seconds.
.SAT NIGHT...SW winds 20 to 25 kt, becoming W 10 to 15 kt after
midnight. Gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: SW 4 ft
at 5 seconds and S 3 ft at 8 seconds.
.SUN...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: W 2 ft at 3 seconds and S 2 ft at 8 seconds.
.SUN NIGHT...NW winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
NW 2 ft at 3 seconds and S 2 ft at 8 seconds.
.MON...N winds 5 to 10 kt, becoming S in the afternoon. Seas
1 foot or less. Wave Detail: NW 1 foot at 4 seconds and NE 1 foot
at 6 seconds.
.MON NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt after
midnight. Seas 1 foot or less, then around 2 ft after midnight. A
chance of showers after midnight.
.TUE...S winds around 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. A chance of showers.
.TUE NIGHT THROUGH WED NIGHT...S 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.

$$

ANZ233-190900-
Vineyard Sound-
403 PM EDT Fri Apr 18 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 11 PM EDT THIS EVENING
THROUGH SATURDAY EVENING...

.TONIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft. Wave Detail: S 4 ft at 7 seconds.
.SAT...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to
6 ft. Wave Detail: S 6 ft at 10 seconds and SW 5 ft at 6 seconds.
.SAT NIGHT...SW winds 15 to 20 kt, becoming W 10 to 15 kt after
midnight. Gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: SW 6 ft
at 7 seconds.
.SUN...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Wave Detail: S 4 ft at 8 seconds and W 2 ft at 5 seconds.
.SUN NIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S
3 ft at 8 seconds and NW 1 foot at 5 seconds.
.MON...NE winds around 5 kt, becoming S in the afternoon. Seas
1 foot or less. Wave Detail: S 1 foot at 6 seconds.
.MON NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt after
midnight. Seas 1 foot or less, then around 2 ft after midnight. A
chance of showers after midnight.
.TUE...S winds 15 to 20 kt. Seas 2 to 3 ft. A chance of showers.
.TUE NIGHT THROUGH WED 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.

$$

ANZ234-190900-
Buzzards Bay-
403 PM EDT Fri Apr 18 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 3 AM EDT SATURDAY THROUGH
SATURDAY EVENING...

.TONIGHT...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
8 seconds.
.SAT...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to
5 ft. Wave Detail: SW 5 ft at 6 seconds and S 4 ft at 9 seconds.
.SAT NIGHT...SW winds 15 to 20 kt, becoming W 10 to 15 kt after
midnight. Gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: SW 4 ft
at 7 seconds.
.SUN...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: S 3 ft at 8 seconds and W 2 ft at 5 seconds.
.SUN NIGHT...NW winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
NW 2 ft at 5 seconds and S 2 ft at 8 seconds.
.MON...NE winds around 5 kt, becoming S in the afternoon. Seas
1 foot or less. Wave Detail: S 1 foot at 6 seconds.
.MON NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt after
midnight. Seas 1 foot or less, then around 2 ft after midnight. A
chance of showers after midnight.
.TUE...SW winds around 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. A chance of showers.
.TUE NIGHT THROUGH WED 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.

$$

ANZ235-190900-
Rhode Island Sound-
403 PM EDT Fri Apr 18 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 11 PM EDT THIS EVENING
THROUGH SATURDAY EVENING...

.TONIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft. Wave Detail: S 5 ft at 7 seconds.
.SAT...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to
7 ft. Wave Detail: S 7 ft at 8 seconds.
.SAT NIGHT...SW winds 20 to 25 kt, becoming W 15 to 20 kt after
midnight. Gusts up to 30 kt. Seas 5 to 7 ft. Wave Detail: S 7 ft
at 8 seconds and SW 2 ft at 5 seconds.
.SUN...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. Wave Detail: S 5 ft at 8 seconds and W 2 ft at 4 seconds.
.SUN NIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW
3 ft at 8 seconds.
.MON...NE winds 5 to 10 kt, becoming S in the afternoon. Seas
around 2 ft in the morning, then 1 foot or less. Wave Detail: S
2 ft at 7 seconds, becoming S 1 foot at 7 seconds.
.MON NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt after
midnight. Seas 2 to 3 ft. A chance of showers after midnight.
.TUE...SW winds around 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. A chance of showers.
.TUE NIGHT AND WED...W winds 10 to 15 kt. Gusts up to 20 kt. Seas
2 to 4 ft.
.WED NIGHT...SW 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.

$$

ANZ237-190900-
Block Island Sound-
403 PM EDT Fri Apr 18 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 3 AM EDT SATURDAY THROUGH
SATURDAY EVENING...

.TONIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft. Wave Detail: S 4 ft at 7 seconds.
.SAT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to
6 ft. Wave Detail: S 5 ft at 7 seconds.
.SAT NIGHT...SW winds 15 to 20 kt, becoming W 10 to 15 kt after
midnight. Gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: S 5 ft
at 8 seconds and SW 2 ft at 4 seconds.
.SUN...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. Wave Detail: S 4 ft at 8 seconds and W 2 ft at 3 seconds.
.SUN NIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW
3 ft at 7 seconds.
.MON...NE winds around 5 kt, becoming S in the afternoon. Seas
around 2 ft in the morning, then 1 foot or less. Wave Detail: S
2 ft at 7 seconds, becoming S 1 foot at 7 seconds.
.MON NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt after
midnight. Seas 2 to 3 ft. A chance of showers after midnight.
.TUE...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. A chance of showers.
.TUE NIGHT AND WED...W winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt. Seas 2 to 4 ft.
.WED NIGHT...SW 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.

$$

ANZ230-190900-
Boston Harbor-
403 PM EDT Fri Apr 18 2025

.TONIGHT...SW winds around 15 kt with gusts up to 25 kt. Waves
around 2 ft.
.SAT...SW winds 10 to 15 kt with gusts up to 25 kt. Waves around
2 ft.
.SAT NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Waves
around 2 ft.
.SUN...NW winds 15 to 20 kt with gusts up to 25 kt. Waves around
2 ft.
.SUN NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Waves around 2 ft in
the evening, then 1 foot or less.
.MON...N winds around 5 kt, becoming SE in the afternoon. Waves
1 foot or less.
.MON NIGHT...S winds around 10 kt. Waves around 2 ft. Showers
likely after midnight.
.TUE...SW winds 10 to 15 kt. Waves around 2 ft. Showers likely.
.TUE NIGHT THROUGH WED NIGHT...S 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.

$$

ANZ236-190900-
Narragansett Bay-
403 PM EDT Fri Apr 18 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 3 AM EDT SATURDAY THROUGH
SATURDAY EVENING...

.TONIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Waves
2 to 4 ft.
.SAT...SW winds 15 to 20 kt with gusts up to 30 kt. Waves 3 to
5 ft.
.SAT NIGHT...SW winds 10 to 15 kt, becoming W after midnight.
Gusts up to 25 kt. Waves 3 to 5 ft.
.SUN...NW winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to
3 ft.
.SUN NIGHT...NW winds 5 to 10 kt. Waves 2 to 3 ft.
.MON...NE winds around 5 kt, becoming S in the afternoon. Waves
around 2 ft in the morning, then 1 foot or less.
.MON NIGHT...S winds around 10 kt. Waves 1 foot or less, then
2 to 3 ft after midnight. A chance of showers after midnight.
.TUE...SW winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to
3 ft. A chance of showers.
.TUE NIGHT THROUGH WED NIGHT...SW 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