Coastal Waters Forecast
Issued by NWS Boston, MA

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FZUS51 KBOX 150915
CWFBOX

Coastal Waters Forecast
National Weather Service Boston/Norton MA
415 AM EST Tue Jan 15 2019

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

ANZ200-152215-
415 AM EST Tue Jan 15 2019

.Synopsis for Massachusetts and Rhode Island coastal waters...
High pressure dominates today through Thursday. Gusty winds during
the day Wednesday into Wednesday night. Weak low pressure will
move across the waters Friday bringing some rain or snow.

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.

$$

ANZ250-152215-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
415 AM EST Tue Jan 15 2019

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

.TODAY...NW winds 5 to 10 kt. Seas around 6 ft.
.TONIGHT...W winds around 5 kt, becoming SW 10 to 15 kt with
gusts up to 20 kt after midnight. Seas around 5 ft.
.WED...SW winds 15 to 20 kt with gusts up to 30 kt. Seas around
5 ft.
.WED NIGHT...W winds 20 to 25 kt, becoming NW 15 to 20 kt after
midnight. Gusts up to 30 kt. Seas around 6 ft.
.THU...NW winds 15 to 20 kt, diminishing to 5 to 10 kt in the
afternoon. Seas around 5 ft, subsiding to 3 ft in the afternoon.
.THU 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. Snow likely
after midnight with vsby 1 to 3 NM.
.FRI...S winds 10 to 15 kt, becoming SW 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas 5 to 6 ft. A chance of rain.
Snow likely in the morning with vsby 1 NM or less.
.FRI NIGHT...NW winds 10 to 15 kt, increasing to 15 to 20 kt
after midnight. Gusts up to 25 kt. Seas around 5 ft.
.SAT...N winds 10 to 15 kt. Gusts up to 20 kt in the morning.
Seas 3 to 4 ft. A chance of snow in the afternoon.
.SAT NIGHT...E winds 10 to 15 kt with gusts up to 20 kt, becoming
SE 15 to 20 kt with gusts up to 30 kt after midnight. Seas around
4 ft, building to 7 ft after midnight. Snow. Rain after midnight.
Vsby 1 NM 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.

$$

ANZ251-152215-
Massachusetts Bay and Ipswich Bay-
415 AM EST Tue Jan 15 2019

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

.TODAY...NW winds 5 to 10 kt. Seas around 5 ft.
.TONIGHT...W winds around 5 kt, becoming SW 10 to 15 kt with
gusts up to 20 kt after midnight. Seas 4 to 5 ft.
.WED...SW winds 10 to 15 kt with gusts up to 30 kt. Seas around
4 ft.
.WED NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas
3 to 4 ft.
.THU...NW winds 10 to 15 kt with gusts up to 20 kt, diminishing
to 5 to 10 kt in the afternoon. Seas 2 to 3 ft.
.THU NIGHT...S winds 5 to 10 kt. Gusts up to 20 kt after
midnight. Seas 1 foot or less, then around 2 ft after midnight.
Snow likely after midnight with vsby 1 to 3 NM.
.FRI...S winds 10 to 15 kt, becoming SW in the afternoon. Gusts
up to 20 kt. Seas around 4 ft. Snow likely with a chance of rain
in the morning with vsby 1 NM or less.
.FRI NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas
around 4 ft.
.SAT...N winds 10 to 15 kt, becoming NE 5 to 10 kt in the
afternoon. Seas 2 to 3 ft. A chance of snow in the afternoon.
.SAT NIGHT...E winds 10 to 15 kt with gusts up to 25 kt. Seas
around 3 ft, building to 5 ft after midnight. Snow. Rain after
midnight. Vsby 1 NM 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.

$$

ANZ231-152215-
Cape Cod Bay-
415 AM EST Tue Jan 15 2019

...SMALL CRAFT ADVISORY IN EFFECT FROM WEDNESDAY MORNING THROUGH
WEDNESDAY EVENING...

.TODAY...NW winds 5 to 10 kt. Seas around 3 ft.
.TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft.
.WED...SW winds 10 to 15 kt with gusts up to 30 kt. Seas around
2 ft.
.WED NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas
3 to 4 ft.
.THU...NW winds 10 to 15 kt with gusts up to 20 kt, becoming N
5 to 10 kt in the afternoon. Seas around 4 ft, subsiding to 2 ft
in the afternoon.
.THU NIGHT...SE winds 5 to 10 kt. Gusts up to 20 kt after
midnight. Seas 1 foot or less, then around 2 ft after midnight.
Snow likely after midnight with vsby 1 to 3 NM.
.FRI...S winds 10 to 15 kt, becoming SW in the afternoon. Gusts
up to 20 kt. Seas around 3 ft. Snow likely with a chance of rain
in the morning with vsby 1 NM or less.
.FRI NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas
around 3 ft.
.SAT...N winds 10 to 15 kt, becoming NE 5 to 10 kt in the
afternoon. Seas 2 to 3 ft. A chance of snow in the afternoon.
.SAT NIGHT...SE winds 10 to 15 kt. Gusts up to 30 kt. Seas 3 to
4 ft. Snow. Rain after midnight. Vsby 1 NM 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.

$$

ANZ254-152215-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
415 AM EST Tue Jan 15 2019

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

.TODAY...NW winds 10 to 15 kt, diminishing to 5 to 10 kt this
afternoon. Seas 6 to 7 ft.
.TONIGHT...W winds around 5 kt, becoming SW 10 to 15 kt with
gusts up to 20 kt after midnight. Seas around 5 ft.
.WED...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to
6 ft.
.WED NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas
around 6 ft.
.THU...NW winds 15 to 20 kt with gusts up to 25 kt, becoming N
5 to 10 kt in the afternoon. Seas around 6 ft, subsiding to 4 ft
in the afternoon.
.THU NIGHT...SE winds 5 to 10 kt, increasing to 10 to 15 kt with
gusts up to 20 kt after midnight. Seas around 3 ft. Snow likely
after midnight with vsby 1 to 3 NM.
.FRI...SE winds 10 to 15 kt, becoming SW 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas 5 to 6 ft. Rain likely, mainly
in the morning with vsby 1 to 3 NM.
.FRI NIGHT...NW winds 10 to 15 kt, increasing to 15 to 20 kt
after midnight. Gusts up to 25 kt. Seas around 5 ft.
.SAT...N winds 10 to 15 kt with gusts up to 20 kt, becoming NE
5 to 10 kt in the afternoon. Seas 4 to 5 ft. A chance of snow in
the afternoon.
.SAT NIGHT...E winds 10 to 15 kt with gusts up to 20 kt, becoming
SE 15 to 20 kt with gusts up to 30 kt after midnight. Seas around
4 ft, building to 7 ft after midnight. Rain with snow likely.
Vsby 1 NM 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.

$$

ANZ255-152215-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
415 AM EST Tue Jan 15 2019

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON...

.TODAY...NW winds 5 to 10 kt. Seas 5 to 6 ft.
.TONIGHT...W winds around 5 kt, becoming SW 10 to 15 kt with
gusts up to 20 kt after midnight. Seas around 4 ft.
.WED...W winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to
6 ft.
.WED NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas
6 to 7 ft.
.THU...N winds 10 to 15 kt with gusts up to 20 kt, becoming NE
5 to 10 kt in the afternoon. Seas around 5 ft, subsiding to 3 ft
in the afternoon.
.THU NIGHT...SE winds 5 to 10 kt, increasing to 10 to 15 kt with
gusts up to 20 kt after midnight. Seas 2 to 3 ft. Rain likely
with a chance of snow after midnight with vsby 1 to 3 NM.
.FRI...S winds 10 to 15 kt, becoming SW in the afternoon. Gusts
up to 20 kt. Seas around 5 ft. Rain likely in the morning.
.FRI NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas
around 6 ft.
.SAT...NE winds 10 to 15 kt. Gusts up to 20 kt in the morning.
Seas 3 to 4 ft. A chance of snow in the afternoon.
.SAT NIGHT...E winds 10 to 15 kt with gusts up to 20 kt, becoming
SE 15 to 20 kt with gusts up to 30 kt after midnight. Seas around
4 ft, building to 7 ft after midnight. Rain. Snow likely in the
evening with vsby 1 NM 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.

$$

ANZ256-152215-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
415 AM EST Tue Jan 15 2019

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON...

.TODAY...NW winds 5 to 10 kt. Seas 4 to 5 ft.
.TONIGHT...W winds 5 to 10 kt, increasing to 10 to 15 kt with
gusts up to 20 kt after midnight. Seas 3 to 4 ft.
.WED...W winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to
6 ft.
.WED NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas
5 to 6 ft.
.THU...N winds 10 to 15 kt with gusts up to 20 kt, becoming NE
5 to 10 kt in the afternoon. Seas around 4 ft, subsiding to 2 ft
in the afternoon.
.THU NIGHT...SE 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
snow. Rain likely after midnight with vsby 1 to 3 NM.
.FRI...S winds 10 to 15 kt, becoming W in the afternoon. Gusts up
to 25 kt. Seas around 5 ft. Rain likely in the morning.
.FRI NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas
around 5 ft.
.SAT...NE winds 10 to 15 kt. Gusts up to 20 kt in the morning.
Seas 3 to 4 ft. A chance of snow in the afternoon.
.SAT NIGHT...E winds 10 to 15 kt with gusts up to 20 kt, becoming
SE 15 to 20 kt with gusts up to 30 kt after midnight. Seas around
4 ft, building to 7 ft after midnight. Rain. Snow likely in the
evening. Vsby 1 to 3 NM.

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.

$$

ANZ232-152215-
Nantucket Sound-
415 AM EST Tue Jan 15 2019

...SMALL CRAFT ADVISORY IN EFFECT FROM WEDNESDAY MORNING THROUGH
WEDNESDAY EVENING...

.TODAY...NW winds 5 to 10 kt. Seas 2 to 3 ft.
.TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft.
.WED...SW winds 15 to 20 kt with gusts up to 30 kt. Seas around
3 ft.
.WED NIGHT...NW winds 10 to 15 kt with gusts up to 30 kt. Seas
3 to 4 ft.
.THU...N winds 10 to 15 kt with gusts up to 20 kt, diminishing to
5 to 10 kt in the afternoon. Seas 2 to 3 ft.
.THU NIGHT...SE winds 5 to 10 kt. Gusts up to 20 kt after
midnight. Seas 1 foot or less, then around 2 ft after midnight.
Snow likely after midnight with vsby 1 to 3 NM.
.FRI...S winds 10 to 15 kt, becoming SW in the afternoon. Gusts
up to 20 kt. Seas around 3 ft. Rain and snow likely in the
morning with vsby 1 to 3 NM.
.FRI NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas
around 3 ft.
.SAT...N winds 10 to 15 kt with gusts up to 20 kt, becoming NE
5 to 10 kt in the afternoon. Seas 2 to 3 ft. A chance of snow in
the afternoon.
.SAT NIGHT...E winds 10 to 15 kt with gusts up to 20 kt, becoming
SE 15 to 20 kt with gusts up to 30 kt after midnight. Seas around
3 ft, building to 5 ft after midnight. Rain with snow likely.
Vsby 1 NM or less, increasing to 1 to 3 NM after midnight.

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.

$$

ANZ233-152215-
Vineyard Sound-
415 AM EST Tue Jan 15 2019

...SMALL CRAFT ADVISORY IN EFFECT FROM WEDNESDAY MORNING THROUGH
WEDNESDAY EVENING...

.TODAY...NW winds 5 to 10 kt. Seas 1 foot or less.
.TONIGHT...W winds 5 to 10 kt. Gusts up to 20 kt after midnight.
Seas 1 foot or less.
.WED...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to
4 ft.
.WED NIGHT...NW winds 10 to 15 kt with gusts up to 30 kt. Seas
3 to 4 ft.
.THU...N winds 10 to 15 kt with gusts up to 20 kt, becoming NE
5 to 10 kt in the afternoon. Seas around 2 ft in the morning,
then 1 foot or less.
.THU NIGHT...SE winds 5 to 10 kt. Gusts up to 20 kt after
midnight. Seas 1 foot or less, then around 2 ft after midnight.
Snow likely after midnight with vsby 1 to 3 NM.
.FRI...S winds 10 to 15 kt, becoming W in the afternoon. Gusts up
to 20 kt. Seas around 3 ft. Rain likely in the morning.
.FRI NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas
around 3 ft.
.SAT...NE winds 10 to 15 kt. Seas around 2 ft. A chance of snow
in the afternoon.
.SAT NIGHT...SE winds 10 to 15 kt. Gusts up to 30 kt. Seas 3 to
4 ft. Snow in the evening, then rain after midnight. Vsby 1 NM or
less, increasing to 1 to 3 NM after midnight.

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.

$$

ANZ234-152215-
Buzzards Bay-
415 AM EST Tue Jan 15 2019

...SMALL CRAFT ADVISORY IN EFFECT FROM WEDNESDAY MORNING THROUGH
WEDNESDAY EVENING...

.TODAY...NW winds 5 to 10 kt. Seas 1 foot or less.
.TONIGHT...W winds 5 to 10 kt. Seas 1 foot or less.
.WED...SW winds 15 to 20 kt, becoming W 10 to 15 kt in the
afternoon. Gusts up to 30 kt. Seas 2 to 3 ft.
.WED NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas
2 to 3 ft.
.THU...N winds 5 to 10 kt, becoming NE in the afternoon. Seas
around 2 ft in the morning, then 1 foot or less.
.THU NIGHT...SE winds 5 to 10 kt. Gusts up to 20 kt after
midnight. Seas 1 foot or less, then around 2 ft after midnight.
Snow likely after midnight with vsby 1 to 3 NM.
.FRI...S winds 5 to 10 kt, becoming W in the afternoon. Gusts up
to 20 kt. Seas around 3 ft. Snow likely with a chance of rain in
the morning with vsby 1 NM or less.
.FRI NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft.
.SAT...NE winds 5 to 10 kt. Seas around 2 ft. A chance of snow in
the afternoon.
.SAT NIGHT...SE winds 10 to 15 kt with gusts up to 25 kt. Seas
2 to 3 ft. Snow likely. Rain after midnight. Vsby 1 NM 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.

$$

ANZ235-152215-
Rhode Island Sound-
415 AM EST Tue Jan 15 2019

...SMALL CRAFT ADVISORY IN EFFECT FROM WEDNESDAY MORNING THROUGH
WEDNESDAY EVENING...

.TODAY...NW winds 5 to 10 kt. Seas 3 to 4 ft.
.TONIGHT...W winds 5 to 10 kt, increasing to 10 to 15 kt with
gusts up to 20 kt after midnight. Seas 2 to 3 ft.
.WED...W winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to
5 ft.
.WED NIGHT...W winds 15 to 20 kt, becoming NW 10 to 15 kt after
midnight. Gusts up to 30 kt. Seas 4 to 5 ft.
.THU...N winds 10 to 15 kt with gusts up to 20 kt, becoming NE
5 to 10 kt in the afternoon. Seas around 2 ft.
.THU NIGHT...SE 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
snow. Rain likely after midnight with vsby 1 to 3 NM.
.FRI...S winds 10 to 15 kt, becoming W in the afternoon. Gusts up
to 20 kt. Seas around 4 ft. Rain likely in the morning.
.FRI NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas
around 4 ft.
.SAT...N winds 10 to 15 kt with gusts up to 20 kt, becoming NE
5 to 10 kt in the afternoon. Seas 2 to 3 ft. A chance of snow in
the afternoon.
.SAT NIGHT...E winds 10 to 15 kt with gusts up to 20 kt, becoming
SE 15 to 20 kt with gusts up to 30 kt after midnight. Seas around
3 ft, building to 6 ft after midnight. Rain. Snow likely in the
evening. Vsby 1 NM or less, increasing to 1 to 3 NM after
midnight.

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.

$$

ANZ237-152215-
Block Island Sound-
415 AM EST Tue Jan 15 2019

...SMALL CRAFT ADVISORY IN EFFECT FROM WEDNESDAY MORNING THROUGH
WEDNESDAY EVENING...

.TODAY...NW winds 5 to 10 kt. Seas 3 to 4 ft.
.TONIGHT...W winds 5 to 10 kt. Gusts up to 20 kt after midnight.
Seas around 2 ft.
.WED...SW winds 15 to 20 kt, becoming W 10 to 15 kt in the
afternoon. Gusts up to 30 kt. Seas around 4 ft.
.WED NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas
3 to 4 ft.
.THU...N winds 5 to 10 kt, becoming E in the afternoon. Seas
around 2 ft in the morning, then 1 foot or less.
.THU NIGHT...SE 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
snow in the evening, then snow and rain likely after midnight
with vsby 1 to 3 NM.
.FRI...S winds 10 to 15 kt, becoming W in the afternoon. Gusts up
to 20 kt. Seas around 4 ft. Rain likely in the morning.
.FRI NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 4 ft.
.SAT...N winds 10 to 15 kt, becoming E 5 to 10 kt in the
afternoon. Seas 2 to 3 ft. A chance of snow in the afternoon.
.SAT NIGHT...E winds 10 to 15 kt with gusts up to 20 kt, becoming
SE 15 to 20 kt with gusts up to 30 kt after midnight. Seas around
3 ft, building to 6 ft after midnight. Rain. Snow likely in the
evening. Vsby 1 NM or less, increasing to 1 to 3 NM after
midnight.

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.

$$

ANZ230-152215-
Boston Harbor-
415 AM EST Tue Jan 15 2019

.TODAY...NW winds 5 to 10 kt. Waves 3 to 4 ft.
.TONIGHT...SW winds 5 to 10 kt. Waves around 3 ft.
.WED...SW winds 10 to 15 kt with gusts up to 25 kt. Waves around
3 ft.
.WED NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Waves
2 to 3 ft.
.THU...NW winds 5 to 10 kt, diminishing to around 5 kt in the
afternoon. Waves around 2 ft in the morning, then 1 foot or less.
.THU NIGHT...SE winds 5 to 10 kt. Waves 1 foot or less. Snow
likely after midnight with vsby 1 to 3 NM.
.FRI...S winds 5 to 10 kt, becoming SW with gusts up to 20 kt in
the afternoon. Waves around 2 ft. Snow likely in the morning with
vsby 1 NM or less.
.FRI NIGHT...NW winds around 10 kt with gusts up to 20 kt. Waves
around 2 ft.
.SAT...N winds 5 to 10 kt. Waves 1 foot or less. A chance of snow
in the afternoon.
.SAT NIGHT...E winds 5 to 10 kt. Gusts up to 20 kt after
midnight. Waves 2 to 3 ft. Snow. Rain after midnight. Vsby 1 NM
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.

$$

ANZ236-152215-
Narragansett Bay-
415 AM EST Tue Jan 15 2019

.TODAY...NW winds 5 to 10 kt. Waves around 2 ft.
.TONIGHT...W winds 5 to 10 kt. Waves 1 foot or less.
.WED...SW winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to
3 ft.
.WED NIGHT...NW winds around 10 kt with gusts up to 20 kt. Waves
2 to 3 ft.
.THU...N winds 5 to 10 kt, becoming E in the afternoon. Waves
1 foot or less.
.THU NIGHT...SE winds 5 to 10 kt. Waves 1 foot or less, then
around 2 ft after midnight. A chance of snow in the evening, then
snow likely after midnight with vsby 1 to 3 NM.
.FRI...S winds 5 to 10 kt, becoming W in the afternoon. Waves
around 3 ft. A chance of rain and snow likely in the morning with
vsby 1 NM or less.
.FRI NIGHT...NW winds around 10 kt. Waves 2 to 3 ft.
.SAT...NE winds 5 to 10 kt. Waves around 2 ft. A chance of snow
in the afternoon.
.SAT NIGHT...E winds 5 to 10 kt, becoming SE 10 to 15 kt with
gusts up to 25 kt after midnight. Waves 2 to 3 ft. Snow likely.
Rain after midnight. Vsby 1 NM 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.

$$

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