233
FZUS51 KBOX 190505
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
105 AM EDT Thu Jun 19 2025

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

ANZ200-191800-
105 AM EDT Thu Jun 19 2025

.Synopsis for Massachusetts and Rhode Island coastal waters...
Low pres lifts northeast across the Great Lakes Wed into Wed
night and into Quebec on Thu. This will drag a cold front across the
region Thu night. This will be followed by a weak ridge of high pres
Fri into Sat. A Bermuda high will then take control of our weather
early next week.

$$

ANZ250-191800-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
105 AM EDT Thu Jun 19 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS AFTERNOON THROUGH
FRIDAY MORNING...

.REST OF TONIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: SE 3 ft at 7 seconds and SW 1 foot at 3 seconds. Patchy
fog. A slight chance of showers. Vsby 1 NM or less.
.THU...SW winds 5 to 10 kt, becoming S 15 to 20 kt with gusts up
to 25 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: S 3 ft at
4 seconds and SE 3 ft at 8 seconds. Patchy fog. Vsby 1 NM or less
in the morning.
.THU NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas
3 to 4 ft. Wave Detail: S 4 ft at 5 seconds and E 3 ft at
8 seconds.
.FRI...W winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: SW
4 ft at 4 seconds and SE 3 ft at 8 seconds.
.FRI 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 E 2 ft at
8 seconds.
.SAT...W winds around 10 kt, becoming S in the afternoon. Seas
2 to 3 ft. Wave Detail: W 2 ft at 4 seconds and E 2 ft at
8 seconds.
.SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. A chance of showers after midnight.
.SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Seas around
3 ft. A chance of showers.
.SUN NIGHT THROUGH MON 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.

$$

ANZ251-191800-
Massachusetts Bay and Ipswich Bay-
105 AM EDT Thu Jun 19 2025

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

$$

ANZ231-191800-
Cape Cod Bay-
105 AM EDT Thu Jun 19 2025

.REST OF TONIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: SE 2 ft at 7 seconds and S 1 foot at 2 seconds. Patchy
fog. A slight chance of showers. Vsby 1 NM or less.
.THU...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 25 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: SW
2 ft at 3 seconds and E 2 ft at 7 seconds. Patchy fog in the
morning with vsby 1 NM or less.
.THU NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 4 ft. Wave Detail: SW 2 ft at 3 seconds and E 2 ft at
8 seconds.
.FRI...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
4 ft. Wave Detail: W 2 ft at 3 seconds and E 2 ft at 8 seconds.
.FRI NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas around 2 ft. Wave Detail: W 2 ft at 4 seconds and E
1 foot at 8 seconds.
.SAT AND SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft. Wave Detail: W 1 foot at 3 seconds and E 1 foot
at 8 seconds.
.SUN...SW winds around 15 kt with gusts up to 25 kt. Seas 2 to
3 ft. A chance of showers.
.SUN NIGHT THROUGH MON 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.

$$

ANZ254-191800-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
105 AM EDT Thu Jun 19 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS AFTERNOON THROUGH
FRIDAY MORNING...

.REST OF TONIGHT...S winds around 10 kt. Seas 2 to 3 ft. Wave
Detail: S 3 ft at 7 seconds. Patchy fog. A slight chance of
showers. Vsby 1 NM or less.
.THU...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 25 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: S 3 ft
at 7 seconds. Patchy fog. Vsby 1 NM or less, increasing to 1 to
3 NM in the afternoon.
.THU NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 5 ft. Wave Detail: SW 5 ft at 5 seconds and E 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 5 ft at 7 seconds and E 2 ft at 8 seconds.
.FRI NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft. Wave Detail: W 4 ft at 7 seconds and E 2 ft at
8 seconds.
.SAT AND SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: W 3 ft at 6 seconds and E 2 ft at
8 seconds.
.SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
3 ft. A chance of showers.
.SUN NIGHT THROUGH MON 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.

$$

ANZ255-191800-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
105 AM EDT Thu Jun 19 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS AFTERNOON THROUGH
FRIDAY MORNING...

.REST OF TONIGHT...SW winds around 10 kt. Seas 2 to 3 ft. Wave
Detail: SE 2 ft at 6 seconds. Patchy fog. A slight chance of
showers. Vsby 1 NM or less.
.THU...SW winds 10 to 15 kt, increasing to 15 to 20 kt with gusts
up to 25 kt in the afternoon. Seas 2 to 3 ft, building to 3 to
5 ft in the afternoon. Wave Detail: SE 2 ft at 7 seconds,
becoming SW 4 ft at 6 seconds and E 2 ft at 7 seconds. Patchy
fog. Vsby 1 NM or less, increasing to 1 to 3 NM in the afternoon.
.THU NIGHT...SW winds 20 to 25 kt with gusts up to 30 kt. Seas
4 to 6 ft. Wave Detail: SW 6 ft at 6 seconds and E 2 ft at
8 seconds. Patchy fog in the evening with vsby 1 to 3 NM.
.FRI...W winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to
5 ft. Wave Detail: SW 5 ft at 7 seconds and E 2 ft at 8 seconds.
.FRI NIGHT...W winds 10 to 15 kt. Gusts up to 25 kt in the
evening. Seas 3 to 5 ft. Wave Detail: SW 5 ft at 7 seconds and E
2 ft at 8 seconds.
.SAT AND SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: SW 3 ft at 7 seconds and E 1 foot at
8 seconds.
.SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
4 ft. A chance of showers.
.SUN NIGHT THROUGH MON NIGHT...SW winds 15 to 20 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.

$$

ANZ256-191800-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
105 AM EDT Thu Jun 19 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS AFTERNOON THROUGH
FRIDAY MORNING...

.REST OF TONIGHT...SW winds around 10 kt. Seas around 3 ft. Wave
Detail: SE 3 ft at 7 seconds. Patchy fog. A slight chance of
showers. Vsby 1 NM or less.
.THU...SW winds 10 to 15 kt, increasing to 15 to 20 kt with gusts
up to 25 kt in the afternoon. Seas 3 to 5 ft. Wave Detail: SE
4 ft at 7 seconds. Patchy fog. Vsby 1 NM or less, increasing to
1 to 3 NM in the afternoon.
.THU NIGHT...SW winds 20 to 25 kt with gusts up to 30 kt. Seas
4 to 6 ft. Wave Detail: S 6 ft at 6 seconds and E 2 ft at
8 seconds. Patchy fog in the evening with vsby 1 to 3 NM.
.FRI...W winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to
5 ft. Wave Detail: SW 5 ft at 7 seconds and E 2 ft at 8 seconds.
.FRI NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 3 to 5 ft. Wave Detail: SW 5 ft at 7 seconds and E
2 ft at 8 seconds.
.SAT AND SAT NIGHT...SW winds 15 to 20 kt. Seas 2 to 3 ft. Wave
Detail: SW 3 ft at 7 seconds and E 2 ft at 8 seconds.
.SUN THROUGH MON NIGHT...SW winds 15 to 20 kt with gusts up to
25 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.

$$

ANZ232-191800-
Nantucket Sound-
105 AM EDT Thu Jun 19 2025

.REST OF TONIGHT...SW winds around 10 kt. Seas around 2 ft. Wave
Detail: S 1 foot at 3 seconds and E 1 foot at 7 seconds. Patchy
fog. A slight chance of showers. Vsby 1 NM or less.
.THU...SW winds 10 to 15 kt, increasing to 15 to 20 kt with gusts
up to 25 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SW
3 ft at 4 seconds and E 1 foot at 7 seconds. Patchy fog. Vsby
1 NM or less in the morning.
.THU NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas
3 to 4 ft. Wave Detail: SW 4 ft at 5 seconds and E 1 foot at
8 seconds. Patchy fog in the evening with vsby 1 to 3 NM.
.FRI...W winds 15 to 20 kt with gusts up to 25 kt. Seas around
3 ft. Wave Detail: SW 3 ft at 5 seconds and E 1 foot at
8 seconds.
.FRI NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 3 ft. Wave Detail: W 3 ft at 5 seconds and E
1 foot at 8 seconds.
.SAT AND SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: W 2 ft at 4 seconds and E 1 foot at
8 seconds.
.SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
3 ft. A chance of showers.
.SUN NIGHT THROUGH MON 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.

$$

ANZ233-191800-
Vineyard Sound-
105 AM EDT Thu Jun 19 2025

.REST OF TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: SW 1 foot at 4 seconds and SE 1 foot at 7 seconds. Patchy
fog. A slight chance of showers. Vsby 1 NM or less.
.THU...SW winds 10 to 15 kt, increasing to 15 to 20 kt with gusts
up to 25 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: SW
3 ft at 4 seconds and SE 1 foot at 7 seconds. Patchy fog. Vsby
1 NM or less, increasing to 1 to 3 NM in the afternoon.
.THU NIGHT...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 1 foot at
7 seconds. Patchy fog in the evening with vsby 1 to 3 NM.
.FRI...W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
4 ft. Wave Detail: SW 4 ft at 6 seconds and E 1 foot at
8 seconds.
.FRI 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 7 seconds and E
1 foot at 8 seconds.
.SAT AND SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: SW 2 ft at 6 seconds and E 1 foot at
8 seconds.
.SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft. A chance of showers.
.SUN NIGHT THROUGH MON 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.

$$

ANZ234-191800-
Buzzards Bay-
105 AM EDT Thu Jun 19 2025

.REST OF TONIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. Wave
Detail: SW 1 foot at 3 seconds and SE 1 foot at 7 seconds. Patchy
fog. A slight chance of showers. Vsby 1 NM or less.
.THU...SW winds 5 to 10 kt, increasing to 15 to 20 kt with gusts
up to 25 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: SW
3 ft at 4 seconds and SE 1 foot at 7 seconds. Patchy fog. Vsby
1 NM or less in the morning.
.THU NIGHT...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 SE 1 foot at
7 seconds. Patchy fog in the evening with vsby 1 to 3 NM.
.FRI...W 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 1 foot at
8 seconds.
.FRI 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 7 seconds and E
1 foot at 8 seconds.
.SAT AND SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft. Wave Detail: SW 2 ft at 6 seconds and E 1 foot
at 8 seconds.
.SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft. A chance of showers.
.SUN NIGHT THROUGH MON 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.

$$

ANZ235-191800-
Rhode Island Sound-
105 AM EDT Thu Jun 19 2025

.REST OF TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: S 2 ft at 7 seconds. Patchy fog. A slight chance of
showers. Vsby 1 NM or less.
.THU...SW winds 10 to 15 kt, increasing to 15 to 20 kt with gusts
up to 25 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: S 4 ft
at 7 seconds. Patchy fog. Vsby 1 NM or less, increasing to 1 to
3 NM in the afternoon.
.THU NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 5 ft. Wave Detail: SW 5 ft at 7 seconds and SE 1 foot at
7 seconds. Patchy fog in the evening with vsby 1 to 3 NM.
.FRI...W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
4 ft. Wave Detail: SW 4 ft at 7 seconds and SE 1 foot at
8 seconds.
.FRI NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 4 ft. Wave Detail: SW 4 ft at 7 seconds and SE
1 foot at 8 seconds.
.SAT AND SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: SW 3 ft at 7 seconds and SE 1 foot
at 8 seconds.
.SUN THROUGH MON NIGHT...SW winds 15 to 20 kt with gusts up to
25 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.

$$

ANZ237-191800-
Block Island Sound-
105 AM EDT Thu Jun 19 2025

.REST OF TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: SE 2 ft at 7 seconds. Patchy fog. A slight chance of
showers. Vsby 1 NM or less.
.THU...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 25 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: S 3 ft
at 7 seconds. Patchy fog in the morning with vsby 1 NM or less.
.THU NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 4 ft. Wave Detail: SW 4 ft at 6 seconds and SE 1 foot at
7 seconds.
.FRI...W winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: W 4 ft
at 6 seconds and SE 1 foot at 8 seconds.
.FRI NIGHT...W winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas 2 to 4 ft. Wave
Detail: W 4 ft at 7 seconds and SE 1 foot at 8 seconds.
.SAT AND SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: W 3 ft at 6 seconds and SE 1 foot at
8 seconds.
.SUN THROUGH MON 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.

$$

ANZ230-191800-
Boston Harbor-
105 AM EDT Thu Jun 19 2025

.REST OF TONIGHT...S winds around 5 kt. Waves 1 foot or less.
Patchy fog. Vsby 1 NM or less.
.THU...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Waves 1 foot or less, then around
2 ft in the afternoon. Patchy fog in the morning with vsby 1 NM
or less.
.THU NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Waves
around 2 ft.
.FRI...W winds 15 to 20 kt with gusts up to 25 kt. Waves around
2 ft.
.FRI NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Waves around 2 ft.
.SAT...W winds 5 to 10 kt, becoming S in the afternoon. Waves
1 foot or less, then around 2 ft in the afternoon.
.SAT NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt after
midnight. Waves around 2 ft. A chance of showers after midnight.
.SUN...SW winds 10 to 15 kt with gusts up to 20 kt. Waves around
2 ft. A chance of showers.
.SUN NIGHT THROUGH MON NIGHT...SW winds 10 to 15 kt with gusts up
to 20 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.

$$

ANZ236-191800-
Narragansett Bay-
105 AM EDT Thu Jun 19 2025

.REST OF TONIGHT...S winds around 5 kt. Waves around 2 ft. Patchy
fog. Vsby 1 NM or less.
.THU...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Waves 2 to 3 ft. Patchy fog in the
morning with vsby 1 NM or less.
.THU NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Waves
2 to 3 ft.
.FRI...W winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to
3 ft.
.FRI NIGHT THROUGH SAT NIGHT...SW winds 10 to 15 kt with gusts up
to 20 kt. Waves around 2 ft.
.SUN THROUGH MON NIGHT...SW 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.

$$

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