Coastal Waters Forecast
Issued by NWS Boston, MA

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FZUS51 KBOX 230517
CWFBOX

Coastal Waters Forecast
National Weather Service Taunton MA
116 AM EDT Mon Oct 23 2017

COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT TO
25 NM

ANZ200-231800-
116 AM EDT Mon Oct 23 2017

.Synopsis for Massachusetts and Rhode Island coastal waters...
Strong high pressure will move farther east of New England tonight.
A strong cold front approaches from the west late  Tuesday, then
lingers around the region into Thu.

For information on possible hazardous weather beyond the 24-36
hour forecast period, please visit www.weather.gov/boston and
follow the Current Hazards link above the map on the left.

$$

ANZ250-231800-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
116 AM EDT Mon Oct 23 2017

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH
TUESDAY AFTERNOON...

.REST OF TONIGHT...S winds around 5 kt. Seas 2 to 3 ft. Areas of
fog. Vsby 1 NM or less.
.MON...S winds 5 to 10 kt. Seas around 2 ft. Areas of fog. Vsby
1 NM or less.
.MON NIGHT...S winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. Gusts up to 25 kt. Seas 2 to 4 ft.
.TUE...S winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to
7 ft. A chance of rain.
.TUE NIGHT...S winds 20 to 25 kt with gusts up to 40 kt. Seas
6 to 9 ft. Rain likely.
.WED...S winds 25 to 30 kt, diminishing to 20 to 25 kt in the
afternoon. Gusts up to 40 kt. Seas 7 to 10 ft. Rain. Vsby 1 to
3 NM.
.WED NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 6 to 9 ft. Rain. Vsby 1 to 3 NM.
.THU...SW winds 10 to 15 kt. Seas 5 to 8 ft. Showers likely.
.THU NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas
6 to 9 ft.
.FRI...W winds 10 to 15 kt with gusts up to 25 kt. Seas 5 to
8 ft.
.FRI NIGHT...SW winds 5 to 10 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.

$$

ANZ251-231800-
Massachusetts Bay and Ipswich Bay-
116 AM EDT Mon Oct 23 2017

...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY MORNING THROUGH
TUESDAY AFTERNOON...

.REST OF TONIGHT...S winds around 5 kt. Seas around 2 ft. Areas
of fog. Vsby 1 NM or less.
.MON...S winds 5 to 10 kt. Seas around 2 ft. Areas of fog. Vsby
1 NM or less.
.MON NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft. Patchy fog. Vsby 1 to 3 NM.
.TUE...S winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to
5 ft. Patchy fog. A chance of rain. Vsby 1 to 3 NM.
.TUE NIGHT...S winds 15 to 20 kt. Gusts up to 30 kt, increasing
to 40 kt after midnight. Seas 4 to 7 ft. Rain.
.WED...S winds 20 to 25 kt, becoming SE 15 to 20 kt in the
afternoon. Gusts up to 40 kt. Seas 4 to 7 ft. Rain. Vsby 1 to
3 NM.
.WED NIGHT...S winds 5 to 10 kt. Seas 3 to 5 ft. Rain. Vsby 1 to
3 NM.
.THU...SW winds 5 to 10 kt. Seas 3 to 5 ft. Showers likely.
.THU NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas
4 to 6 ft.
.FRI...SW winds 5 to 10 kt with gusts up to 20 kt. Seas 3 to
5 ft.
.FRI NIGHT...SW winds 5 to 10 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.

$$

ANZ231-231800-
Cape Cod Bay-
116 AM EDT Mon Oct 23 2017

...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY MORNING THROUGH
TUESDAY AFTERNOON...

.REST OF TONIGHT...S winds around 5 kt. Seas 1 foot or less.
Areas of fog. Vsby 1 NM or less.
.MON...S winds 5 to 10 kt. Seas 1 foot or less. Areas of fog.
Vsby 1 NM or less.
.MON NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas
around 2 ft.
.TUE...S winds 15 to 20 kt with gusts up to 35 kt. Seas 2 to
3 ft. A chance of rain.
.TUE NIGHT...S winds 15 to 20 kt with gusts up to 40 kt. Seas
3 to 4 ft. Rain.
.WED...S winds 15 to 20 kt with gusts up to 40 kt. Seas 2 to
4 ft. Rain. Vsby 1 to 3 NM.
.WED NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Rain. Vsby 1 to
3 NM.
.THU...SW winds 5 to 10 kt. Seas 2 to 3 ft. Showers likely.
.THU NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas
2 to 4 ft.
.FRI...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft.
.FRI 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.

$$

ANZ254-231800-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
116 AM EDT Mon Oct 23 2017

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH
TUESDAY AFTERNOON...

.REST OF TONIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Areas of
fog. Vsby 1 NM or less.
.MON...S winds 5 to 10 kt. Seas 2 to 3 ft. Areas of fog. Vsby
1 NM or less.
.MON NIGHT...S winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. Gusts up to 25 kt. Seas 2 to 4 ft.
.TUE...S winds 15 to 20 kt with gusts up to 35 kt. Seas 4 to
7 ft.
.TUE NIGHT...S winds 20 to 25 kt with gusts up to 40 kt. Seas
6 to 9 ft. Rain likely.
.WED...S winds 20 to 25 kt with gusts up to 40 kt. Seas 8 to
11 ft. Rain. Vsby 1 to 3 NM.
.WED NIGHT...S winds 10 to 15 kt. Gusts up to 25 kt in the
evening. Seas 7 to 10 ft. Rain. Vsby 1 to 3 NM.
.THU...SW winds 5 to 10 kt. Seas 7 to 10 ft. Showers.
.THU NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas
7 to 10 ft.
.FRI...W winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to
8 ft.
.FRI NIGHT...SW winds 5 to 10 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.

$$

ANZ255-231800-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
116 AM EDT Mon Oct 23 2017

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH
TUESDAY AFTERNOON...

.REST OF TONIGHT...SE winds around 5 kt. Seas around 2 ft. Areas
of fog. Vsby 1 NM or less.
.MON...S winds 5 to 10 kt. Seas 2 to 3 ft. Areas of fog. Vsby
1 NM or less.
.MON NIGHT...S winds 10 to 15 kt with gusts up to 25 kt. Seas
2 to 4 ft.
.TUE...S winds 15 to 20 kt with gusts up to 35 kt. Seas 5 to
8 ft. Patchy fog. Vsby 1 to 3 NM.
.TUE NIGHT...S winds 20 to 25 kt with gusts up to 40 kt. Seas
8 to 11 ft. Rain likely.
.WED...S winds 20 to 25 kt with gusts up to 40 kt. Seas 9 to
14 ft. Rain. Vsby 1 to 3 NM.
.WED NIGHT...SW winds 5 to 10 kt with gusts up to 20 kt, becoming
S 10 to 15 kt after midnight. Seas 8 to 11 ft. Rain. Vsby 1 to
3 NM.
.THU...SW winds 10 to 15 kt. Seas 7 to 10 ft. Showers likely.
.THU NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas
7 to 10 ft.
.FRI...W winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to
8 ft.
.FRI NIGHT...SW winds 5 to 10 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.

$$

ANZ256-231800-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
116 AM EDT Mon Oct 23 2017

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH
TUESDAY AFTERNOON...

.REST OF TONIGHT...SE winds around 5 kt. Seas around 2 ft. Areas
of fog. Vsby 1 NM or less.
.MON...SE winds 5 to 10 kt. Seas 2 to 3 ft. Areas of fog. Vsby
1 NM or less.
.MON NIGHT...SE winds 10 to 15 kt, becoming S 15 to 20 kt after
midnight. Gusts up to 25 kt. Seas 3 to 5 ft.
.TUE...S winds 20 to 25 kt with gusts up to 35 kt. Seas 6 to
9 ft. Patchy fog. A chance of rain. Vsby 1 to 3 NM.
.TUE NIGHT...S winds 20 to 25 kt with gusts up to 40 kt. Seas
9 to 12 ft. Rain.
.WED...S winds 20 to 25 kt. Gusts up to 40 kt, decreasing to
30 kt in the afternoon. Seas 9 to 13 ft. Rain. Vsby 1 to 3 NM.
.WED NIGHT...SW winds 5 to 10 kt, increasing to 10 to 15 kt after
midnight. Seas 8 to 11 ft. Rain. Vsby 1 to 3 NM.
.THU...W winds 10 to 15 kt with gusts up to 20 kt. Seas 7 to
9 ft. A chance of showers.
.THU NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas
6 to 9 ft.
.FRI...W winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to
8 ft.
.FRI NIGHT...SW winds 5 to 10 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.

$$

ANZ232-231800-
Nantucket Sound-
116 AM EDT Mon Oct 23 2017

...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY MORNING THROUGH
TUESDAY AFTERNOON...

.REST OF TONIGHT...S winds around 5 kt. Seas 1 foot or less.
Areas of fog. Vsby 1 NM or less.
.MON...S winds 5 to 10 kt. Seas 1 foot or less. Areas of fog.
Vsby 1 NM or less.
.MON NIGHT...S winds 10 to 15 kt with gusts up to 25 kt. Seas
2 to 3 ft.
.TUE...S winds 15 to 20 kt with gusts up to 35 kt. Seas 2 to
4 ft. A chance of rain.
.TUE NIGHT...S winds 15 to 20 kt with gusts up to 40 kt. Seas
3 to 5 ft. A chance of rain.
.WED...S winds 20 to 25 kt, diminishing to 15 to 20 kt in the
afternoon. Gusts up to 40 kt. Seas 4 to 6 ft. Rain. Vsby 1 to
3 NM.
.WED NIGHT...SW winds 5 to 10 kt, becoming S 10 to 15 kt after
midnight. Seas 3 to 5 ft. Rain. Vsby 1 to 3 NM.
.THU...SW winds 10 to 15 kt. Seas 2 to 4 ft. Showers likely.
.THU NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas
3 to 5 ft.
.FRI...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft.
.FRI NIGHT...SW winds 5 to 10 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.

$$

ANZ233-231800-
Vineyard Sound-
116 AM EDT Mon Oct 23 2017

...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY MORNING THROUGH
TUESDAY AFTERNOON...

.REST OF TONIGHT...S winds around 5 kt. Seas 1 foot or less.
Areas of fog. Vsby 1 NM or less.
.MON...S winds 5 to 10 kt. Seas 1 foot or less. Areas of fog.
Vsby 1 NM or less.
.MON NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas
around 2 ft.
.TUE...S winds 15 to 20 kt, increasing to 20 to 25 kt in the
afternoon. Gusts up to 35 kt. Seas 3 to 5 ft. Patchy fog. A
chance of rain. Vsby 1 to 3 NM.
.TUE NIGHT...S winds 20 to 25 kt with gusts up to 40 kt. Seas
4 to 6 ft. Rain.
.WED...S winds 20 to 25 kt. Gusts up to 40 kt, decreasing to
30 kt in the afternoon. Seas 3 to 5 ft. Rain. Vsby 1 to 3 NM.
.WED NIGHT...SW winds 5 to 10 kt. Seas 2 to 4 ft. Rain. Vsby 1 to
3 NM.
.THU...W winds 10 to 15 kt. Seas 2 to 4 ft. Showers likely.
.THU NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas
2 to 4 ft.
.FRI...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft.
.FRI NIGHT...SW winds 5 to 10 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.

$$

ANZ234-231800-
Buzzards Bay-
116 AM EDT Mon Oct 23 2017

...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY MORNING THROUGH
TUESDAY AFTERNOON...

.REST OF TONIGHT...S winds around 5 kt. Seas 1 foot or less.
Areas of fog. Vsby 1 NM or less.
.MON...S winds 5 to 10 kt. Seas 1 foot or less. Areas of fog.
Vsby 1 NM or less.
.MON NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft.
.TUE...S winds 15 to 20 kt with gusts up to 35 kt. Seas 2 to
4 ft. Patchy fog. A chance of rain. Vsby 1 to 3 NM.
.TUE NIGHT...S winds 15 to 20 kt with gusts up to 40 kt. Seas
3 to 4 ft. Rain.
.WED...S winds 20 to 25 kt with gusts up to 40 kt, diminishing to
15 to 20 kt with gusts up to 30 kt in the afternoon. Seas 2 to
4 ft. Rain. Vsby 1 to 3 NM.
.WED NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Rain. Vsby 1 to
3 NM.
.THU...W winds 5 to 10 kt. Seas 2 to 3 ft. Showers likely. Vsby
1 to 3 NM.
.THU NIGHT...W winds around 10 kt with gusts up to 20 kt. Seas
2 to 3 ft.
.FRI...W winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft.
.FRI 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.

$$

ANZ235-231800-
Rhode Island Sound-
116 AM EDT Mon Oct 23 2017

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH
TUESDAY AFTERNOON...

.REST OF TONIGHT...S winds around 5 kt. Seas around 2 ft. Areas
of fog. Vsby 1 NM or less.
.MON...S winds 5 to 10 kt. Seas around 2 ft. Areas of fog. Vsby
1 NM or less.
.MON NIGHT...S winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. Gusts up to 25 kt. Seas 2 to 4 ft.
.TUE...S winds 20 to 25 kt with gusts up to 35 kt. Seas 4 to
7 ft. Patchy fog. A chance of rain. Vsby 1 to 3 NM.
.TUE NIGHT...S winds 20 to 25 kt with gusts up to 40 kt. Seas
7 to 10 ft. Rain.
.WED...S winds 20 to 25 kt with gusts up to 40 kt, diminishing to
15 to 20 kt with gusts up to 30 kt in the afternoon. Seas 7 to
10 ft. Rain. Vsby 1 to 3 NM.
.WED NIGHT...SW winds 5 to 10 kt, increasing to 10 to 15 kt after
midnight. Seas 6 to 9 ft. Rain. Vsby 1 to 3 NM.
.THU...W winds 10 to 15 kt. Seas 5 to 7 ft. A chance of showers.
.THU NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas
4 to 7 ft.
.FRI...W winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
6 ft.
.FRI NIGHT...SW winds 5 to 10 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.

$$

ANZ237-231800-
Block Island Sound-
116 AM EDT Mon Oct 23 2017

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH
TUESDAY AFTERNOON...

.REST OF TONIGHT...S winds around 5 kt. Seas around 2 ft. Areas
of fog. Vsby 1 to 3 NM.
.MON...SE winds 5 to 10 kt. Seas around 2 ft. Areas of fog. Vsby
1 NM or less.
.MON NIGHT...S winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. Gusts up to 25 kt. Seas 2 to 4 ft. Patchy fog. A chance
of showers. Vsby 1 to 3 NM.
.TUE...S winds 15 to 20 kt with gusts up to 35 kt. Seas 4 to
7 ft. Patchy fog. Rain likely. Vsby 1 to 3 NM.
.TUE NIGHT...S winds 20 to 25 kt with gusts up to 40 kt. Seas
7 to 10 ft. Rain.
.WED...S winds 20 to 25 kt with gusts up to 35 kt, becoming SW
10 to 15 kt with gusts up to 25 kt in the afternoon. Seas 7 to
10 ft. Rain. Vsby 1 to 3 NM.
.WED NIGHT...SW winds 5 to 10 kt. Seas 5 to 8 ft. Rain. Vsby 1 to
3 NM.
.THU...W winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to
7 ft. A chance of showers.
.THU NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
4 to 7 ft.
.FRI...W winds around 10 kt with gusts up to 20 kt. Seas 3 to
5 ft.
.FRI NIGHT...SW winds 5 to 10 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.

$$

ANZ230-231800-
Boston Harbor-
116 AM EDT Mon Oct 23 2017

...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY MORNING THROUGH
TUESDAY AFTERNOON...

.REST OF TONIGHT...S winds around 5 kt. Waves 1 foot or less.
Areas of fog. Vsby 1 NM or less.
.MON...S winds 5 to 10 kt. Waves 1 foot or less. Areas of fog.
Vsby 1 NM or less.
.MON NIGHT...S winds 5 to 10 kt. Waves around 2 ft. Patchy fog.
Vsby 1 to 3 NM.
.TUE...S winds 10 to 15 kt with gusts up to 30 kt. Waves around
2 ft. Patchy fog. A chance of rain. Vsby 1 to 3 NM.
.TUE NIGHT...S winds around 15 kt with gusts up to 35 kt. Waves
around 2 ft, except 3 to 5 ft at the outer harbor entrance. Rain.
.WED...S winds 15 to 20 kt, becoming SE 10 to 15 kt in the
afternoon. Gusts up to 35 kt. Waves 2 to 4 ft. Rain. Vsby 1 to
3 NM.
.WED NIGHT...S winds around 5 kt. Waves 1 foot or less, except
2 to 4 ft at the outer harbor entrance. Patchy fog. Rain. Vsby
1 to 3 NM.
.THU...SW winds 5 to 10 kt. Waves 1 foot or less, except 2 to
4 ft at the outer harbor entrance. Showers likely. Vsby 1 to
3 NM.
.THU NIGHT...W winds 5 to 10 kt with gusts up to 20 kt. Waves
around 2 ft.
.FRI...SW winds 5 to 10 kt with gusts up to 20 kt. Waves around
2 ft.
.FRI NIGHT...SW winds around 5 kt. Waves 1 foot or less.

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.

$$

ANZ236-231800-
Narragansett Bay-
116 AM EDT Mon Oct 23 2017

...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY MORNING THROUGH
TUESDAY AFTERNOON...

.REST OF TONIGHT...S winds around 5 kt. Waves 1 foot or less.
Areas of fog. Vsby 1 NM or less.
.MON...S winds 5 to 10 kt. Waves around 2 ft. Areas of fog. Vsby
1 NM or less.
.MON NIGHT...S winds 5 to 10 kt, increasing to 10 to 15 kt after
midnight. Gusts up to 20 kt. Waves 2 to 3 ft. Patchy fog. A
chance of showers. Vsby 1 to 3 NM.
.TUE...S winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Gusts up to 35 kt. Waves 3 to 5 ft. Patchy fog. Rain
likely. Vsby 1 to 3 NM.
.TUE NIGHT...S winds 15 to 20 kt. Gusts up to 30 kt, increasing
to 40 kt after midnight. Waves 4 to 6 ft. Rain.
.WED...S winds 15 to 20 kt with gusts up to 35 kt, diminishing to
10 to 15 kt with gusts up to 25 kt in the afternoon. Waves 4 to
6 ft. Rain. Vsby 1 to 3 NM.
.WED NIGHT...SW winds 5 to 10 kt. Waves 3 to 5 ft, except 5 to
8 ft at the bay entrance. Patchy fog. Rain likely. Vsby 1 to
3 NM.
.THU...W winds 5 to 10 kt. Waves 2 to 4 ft. A chance of showers.
Vsby 1 to 3 NM.
.THU NIGHT...W winds 5 to 10 kt with gusts up to 20 kt. Waves
2 to 4 ft.
.FRI...W winds 5 to 10 kt with gusts up to 20 kt. Waves 2 to
3 ft.
.FRI NIGHT...SW winds 5 to 10 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.

$$

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