Text Products for CWF Issued by BOX

Coastal Waters Forecast
Issued by NWS Boston, MA
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
000
FZUS51 KBOX 201702
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
101 PM EDT Sat Apr 20 2024

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

ANZ200-210600-
101 PM EDT Sat Apr 20 2024

.Synopsis for Massachusetts and Rhode Island coastal waters...
A cold front brings showers and a period of breezy conditions for
today. High pres then returns for Sun and Mon bringing westerly
winds. The high moves overhead on Tue.

$$

ANZ250-210600-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
101 PM EDT Sat Apr 20 2024

.THIS AFTERNOON...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: SE 3 ft at 7 seconds and SW 1 ft at 3 seconds. Patchy
fog. A chance of showers. Vsby 1 NM or less.
.TONIGHT...W winds 10 to 15 kt, becoming NW after midnight. Gusts
up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 2 ft at 3 seconds
and SE 2 ft at 7 seconds. Patchy fog in the evening. A chance of
showers in the evening with vsby 1 NM or less.
.SUN...W winds around 10 kt with gusts up to 20 kt, becoming SW
in the afternoon. Seas 2 to 4 ft. Wave Detail: W 2 ft at
3 seconds and SE 2 ft at 7 seconds.
.SUN NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. Wave Detail: W 3 ft at 4 seconds and SE 2 ft at
7 seconds.
.MON...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: W 3 ft at 4 seconds and SE 2 ft at 7 seconds.
.MON NIGHT...W winds around 10 kt with gusts up to 20 kt. Seas
2 to 3 ft. Wave Detail: NW 2 ft at 4 seconds and SE 1 ft at
7 seconds.
.TUE AND TUE NIGHT...S winds 15 to 20 kt with gusts up to 30 kt.
Seas 2 to 4 ft.
.WED AND WED NIGHT...S winds 15 to 20 kt, becoming SW. Gusts up
to 30 kt. Seas 3 to 5 ft. A chance of showers.

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.

$$

ANZ251-210600-
Massachusetts Bay and Ipswich Bay-
101 PM EDT Sat Apr 20 2024

.THIS AFTERNOON...SW winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: SE 2 ft at 7 seconds and SW 1 ft at 2 seconds. Patchy
fog. A slight chance of showers. Vsby 1 to 3 NM.
.TONIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
around 2 ft. Wave Detail: W 2 ft at 3 seconds and SE 2 ft at
7 seconds. A chance of showers in the evening with vsby 1 to
3 NM.
.SUN...W winds around 10 kt. Seas around 2 ft. Wave Detail: W
2 ft at 3 seconds and SE 1 ft at 7 seconds.
.SUN NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
around 2 ft. Wave Detail: W 2 ft at 3 seconds and SE 1 ft at
7 seconds.
.MON...NW winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft. Wave Detail: W 2 ft at 3 seconds and SE 1 ft at 7 seconds.
.MON NIGHT...NW winds 5 to 10 kt, becoming W after midnight. Seas
around 2 ft. Wave Detail: NW 2 ft at 3 seconds and SE 1 ft at
7 seconds.
.TUE AND TUE NIGHT...S winds 10 to 15 kt with gusts up to 25 kt.
Seas 2 to 3 ft.
.WED...S winds around 15 kt with gusts up to 25 kt. Seas 2 to
3 ft. A chance of showers.
.WED NIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Seas
2 to 4 ft. Showers likely.

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.

$$

ANZ231-210600-
Cape Cod Bay-
101 PM EDT Sat Apr 20 2024

.THIS AFTERNOON...SW winds around 5 kt. Seas around 2 ft. Wave
Detail: SE 2 ft at 7 seconds and SW 1 ft at 2 seconds. Patchy
fog. Showers. Vsby 1 NM or less.
.TONIGHT...W winds 5 to 10 kt, becoming NW after midnight. Gusts
up to 20 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds
and W 1 ft at 2 seconds. Patchy fog in the evening with vsby 1 NM
or less.
.SUN...W winds 5 to 10 kt, becoming SW with gusts up to 20 kt in
the afternoon. Seas around 2 ft. Wave Detail: NW 1 ft at
3 seconds and SE 1 ft at 7 seconds.
.SUN NIGHT...W winds around 10 kt. Gusts up to 20 kt after
midnight. Seas around 2 ft. Wave Detail: SW 1 ft at 3 seconds and
SE 1 ft at 7 seconds.
.MON...NW winds 10 to 15 kt with gusts up to 20 kt, becoming N in
the afternoon. Seas around 2 ft. Wave Detail: NW 2 ft at
3 seconds and SE 1 ft at 7 seconds.
.MON NIGHT...SE winds 5 to 10 kt. Seas 1 foot or less. Wave
Detail: NW 1 ft at 4 seconds and SE 1 ft at 7 seconds.
.TUE...S winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft.
.TUE NIGHT...S winds around 15 kt with gusts up to 25 kt. Seas
2 to 4 ft.
.WED...S winds around 15 kt with gusts up to 25 kt. Seas around
2 ft. A chance of showers.
.WED NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas
2 to 4 ft. A chance of showers.

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.

$$

ANZ254-210600-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
101 PM EDT Sat Apr 20 2024

.THIS AFTERNOON...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: SE 3 ft at 7 seconds and E 2 ft at 10 seconds. Patchy
fog. Showers. Vsby 1 NM or less.
.TONIGHT...W winds 5 to 10 kt, becoming NW after midnight. Gusts
up to 20 kt. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 7 seconds
and W 1 ft at 2 seconds. Patchy fog in the evening with vsby 1 NM
or less.
.SUN...NW winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas 3 to 4 ft. Wave Detail: SE 3 ft
at 7 seconds and W 2 ft at 4 seconds.
.SUN NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft. Wave Detail: W 2 ft at 4 seconds and SE 2 ft at
7 seconds.
.MON...NW winds 10 to 15 kt with gusts up to 20 kt, becoming N in
the afternoon. Seas 2 to 3 ft. Wave Detail: NW 2 ft at 4 seconds
and SE 2 ft at 7 seconds.
.MON NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NW
2 ft at 4 seconds and SE 1 ft at 7 seconds.
.TUE AND TUE NIGHT...S winds 10 to 15 kt with gusts up to 25 kt.
Seas 2 to 3 ft.
.WED AND WED NIGHT...S winds around 15 kt, becoming SW. Gusts up
to 25 kt. Seas 3 to 5 ft. A chance of showers.

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.

$$

ANZ255-210600-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
101 PM EDT Sat Apr 20 2024

.THIS AFTERNOON...W winds around 10 kt. Seas 2 to 3 ft. Wave
Detail: SE 3 ft at 7 seconds and E 1 ft at 10 seconds. Patchy
fog. Showers likely. Vsby 1 NM or less.
.TONIGHT...W winds around 10 kt, becoming NW after midnight.
Gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: SE 3 ft at
7 seconds and W 1 ft at 2 seconds. Patchy fog in the evening. A
chance of showers in the evening with vsby 1 NM or less.
.SUN...NW winds around 10 kt, becoming W with gusts up to 20 kt
in the afternoon. Seas 2 to 3 ft. Wave Detail: SE 3 ft at
7 seconds and W 2 ft at 4 seconds.
.SUN NIGHT...W 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
7 seconds.
.MON...W winds 10 to 15 kt. Gusts up to 20 kt in the morning.
Seas 2 to 3 ft. Wave Detail: W 3 ft at 5 seconds and SE 2 ft at
7 seconds.
.MON NIGHT...S winds around 10 kt, becoming SE after midnight.
Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 ft
at 7 seconds.
.TUE THROUGH WED...S winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 4 ft.
.WED NIGHT...SW 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.

$$

ANZ256-210600-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
101 PM EDT Sat Apr 20 2024

.THIS AFTERNOON...W winds around 10 kt. Seas around 3 ft. Wave
Detail: SE 3 ft at 8 seconds and E 1 ft at 10 seconds. Patchy
fog. A chance of showers. Vsby 1 NM or less.
.TONIGHT...W winds 10 to 15 kt, becoming NW after midnight. Gusts
up to 25 kt. Seas around 3 ft. Wave Detail: SE 3 ft at 7 seconds
and NW 2 ft at 3 seconds. Patchy fog in the evening. A chance of
showers in the evening with vsby 1 NM or less.
.SUN...NW winds around 10 kt, becoming W with gusts up to 20 kt
in the afternoon. Seas 2 to 3 ft. Wave Detail: W 2 ft at
4 seconds and SE 2 ft at 7 seconds.
.SUN NIGHT...W 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
7 seconds.
.MON...W winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: NW 2 ft
at 4 seconds and SE 2 ft at 7 seconds.
.MON NIGHT...W winds 10 to 15 kt, becoming E after midnight. Seas
around 2 ft. Wave Detail: W 2 ft at 4 seconds and SE 1 ft at
7 seconds.
.TUE AND TUE NIGHT...S winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft.
.WED...S winds around 15 kt with gusts up to 25 kt. Seas 3 to
4 ft. A chance of showers.
.WED 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.

$$

ANZ232-210600-
Nantucket Sound-
101 PM EDT Sat Apr 20 2024

.THIS AFTERNOON...W winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: W 1 ft at 2 seconds and SE 1 ft at 7 seconds. Patchy fog.
Showers. Vsby 1 NM or less.
.TONIGHT...W winds 5 to 10 kt, becoming NW after midnight. Gusts
up to 20 kt. Seas around 2 ft. Wave Detail: W 1 ft at 2 seconds
and SE 1 ft at 7 seconds. Patchy fog in the evening. A chance of
showers in the evening with vsby 1 NM or less.
.SUN...NW winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: W 2 ft
at 3 seconds and SE 1 ft at 7 seconds.
.SUN NIGHT...W 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 ft at
7 seconds.
.MON...NW winds 10 to 15 kt, diminishing to 5 to 10 kt in the
afternoon. Seas 1 foot or less. Wave Detail: W 1 ft at 3 seconds
and SE 1 ft at 7 seconds.
.MON NIGHT...SE winds around 10 kt. Seas 1 foot or less. Wave
Detail: SW 1 ft at 4 seconds and SE 1 ft at 7 seconds.
.TUE AND TUE NIGHT...S winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft.
.WED AND WED NIGHT...S winds around 15 kt, becoming SW. Gusts up
to 25 kt. Seas 2 to 3 ft. A chance of showers.

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.

$$

ANZ233-210600-
Vineyard Sound-
101 PM EDT Sat Apr 20 2024

.THIS AFTERNOON...SW winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: SE 2 ft at 7 seconds and W 1 ft at 2 seconds. Patchy fog.
A chance of showers. Vsby 1 to 3 NM.
.TONIGHT...W winds around 10 kt, becoming NW after midnight.
Gusts up to 20 kt. Seas around 2 ft. Wave Detail: S 2 ft at
7 seconds and SW 1 ft at 3 seconds. A chance of showers in the
evening.
.SUN...W winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: SW 2 ft
at 4 seconds and SE 2 ft at 7 seconds.
.SUN NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 4 ft. Wave Detail: SW 2 ft at 4 seconds and SE
1 ft at 7 seconds.
.MON...W winds 10 to 15 kt. Seas 1 foot or less. Wave Detail: W
1 ft at 4 seconds and SE 1 ft at 7 seconds.
.MON NIGHT...S winds around 10 kt, becoming SE after midnight.
Seas 1 foot or less. Wave Detail: SW 1 ft at 4 seconds and SE
1 ft at 7 seconds.
.TUE AND TUE NIGHT...S winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft.
.WED...S winds around 15 kt with gusts up to 20 kt. Seas around
2 ft. A chance of showers.
.WED NIGHT...W winds around 15 kt with gusts up to 25 kt. Seas
2 to 4 ft. A chance of showers.

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.

$$

ANZ234-210600-
Buzzards Bay-
101 PM EDT Sat Apr 20 2024

.THIS AFTERNOON...SW winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: SE 2 ft at 7 seconds and SW 1 ft at 2 seconds. Patchy
fog. Showers. Vsby 1 to 3 NM.
.TONIGHT...W winds around 10 kt, becoming NW after midnight.
Gusts up to 20 kt. Seas around 2 ft. Wave Detail: SE 2 ft at
7 seconds and SW 1 ft at 2 seconds. A chance of showers in the
evening.
.SUN...W winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: SW 2 ft
at 3 seconds and SE 1 ft at 7 seconds.
.SUN NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE
1 ft at 7 seconds.
.MON...W winds around 10 kt. Seas 1 foot or less. Wave Detail: W
1 ft at 4 seconds and SE 1 ft at 7 seconds.
.MON NIGHT...S winds 5 to 10 kt, becoming SE after midnight. Seas
1 foot or less. Wave Detail: SW 1 ft at 4 seconds and SE 1 ft at
7 seconds.
.TUE AND TUE NIGHT...S winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft.
.WED AND WED NIGHT...S winds around 15 kt, becoming W. Gusts up
to 25 kt. Seas 2 to 4 ft. A chance of showers.

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.

$$

ANZ235-210600-
Rhode Island Sound-
101 PM EDT Sat Apr 20 2024

.THIS AFTERNOON...SW winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: SE 2 ft at 8 seconds and SW 1 ft at 2 seconds. Patchy
fog. A chance of showers. Vsby 1 to 3 NM.
.TONIGHT...W winds around 10 kt with gusts up to 20 kt. Seas
around 2 ft. Wave Detail: SE 2 ft at 7 seconds and W 1 ft at
3 seconds. Patchy fog in the evening. A chance of showers in the
evening with vsby 1 NM or less.
.SUN...NW winds around 10 kt, becoming SW with gusts up to 20 kt
in the afternoon. Seas 2 to 3 ft. Wave Detail: SW 3 ft at
4 seconds and SE 2 ft at 7 seconds.
.SUN NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and SE
2 ft at 7 seconds.
.MON...W winds 10 to 15 kt. Gusts up to 20 kt in the morning.
Seas around 2 ft. Wave Detail: W 2 ft at 4 seconds and SE 1 ft at
7 seconds.
.MON NIGHT...W winds 5 to 10 kt, becoming E after midnight. Seas
around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 ft at
7 seconds.
.TUE AND TUE NIGHT...S winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft.
.WED AND WED NIGHT...S winds around 15 kt, becoming W. Gusts up
to 25 kt. Seas 2 to 4 ft. A chance of showers.

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.

$$

ANZ237-210600-
Block Island Sound-
101 PM EDT Sat Apr 20 2024

.THIS AFTERNOON...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: SE 3 ft at 8 seconds. Patchy fog. A chance of showers.
Vsby 1 to 3 NM.
.TONIGHT...NW winds 5 to 10 kt with gusts up to 20 kt. Seas
around 2 ft. Wave Detail: SE 2 ft at 8 seconds and W 1 ft at
2 seconds. Patchy fog in the evening. A chance of showers in the
evening with vsby 1 NM or less.
.SUN...W winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: W 2 ft
at 3 seconds and SE 2 ft at 7 seconds.
.SUN NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE
2 ft at 7 seconds.
.MON...W winds 10 to 15 kt. Seas around 2 ft. Wave Detail: SW
2 ft at 4 seconds and SE 1 ft at 7 seconds.
.MON NIGHT...W winds 10 to 15 kt, becoming N 5 to 10 kt after
midnight. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and
SE 1 ft at 7 seconds.
.TUE AND TUE NIGHT...S winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft.
.WED AND WED NIGHT...S winds around 15 kt, becoming W. Gusts up
to 25 kt. Seas 2 to 4 ft. A chance of showers.

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.

$$

ANZ230-210600-
Boston Harbor-
101 PM EDT Sat Apr 20 2024

.THIS AFTERNOON...SW winds 5 to 10 kt. Waves 1 foot or less.
Showers likely.
.TONIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Waves
around 2 ft. A chance of showers in the evening.
.SUN...W winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Waves around 2 ft.
.SUN NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Waves
around 2 ft.
.MON...NW winds 10 to 15 kt. Gusts up to 20 kt in the morning.
Waves around 2 ft.
.MON NIGHT...NW winds 5 to 10 kt, becoming W after midnight.
Waves 1 foot or less.
.TUE AND TUE NIGHT...S winds 10 to 15 kt with gusts up to 25 kt.
Waves around 2 ft.
.WED...S winds around 15 kt with gusts up to 25 kt. Waves around
2 ft. A chance of showers.
.WED NIGHT...W winds around 15 kt with gusts up to 25 kt. Waves
around 2 ft. Showers likely.

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.

$$

ANZ236-210600-
Narragansett Bay-
101 PM EDT Sat Apr 20 2024

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

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
National Weather Service Regional Headquarters
