National Weather Service National Headquarters

• Home
• Site Map
• News
• Organization
• Search for: NWS All NOAA 

000
FZUS51 KBOX 110743
CWFBOX

Coastal Waters Forecast for Massachusetts
National Weather Service Boston/Norton MA
343 AM EDT Wed Sep 11 2019

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

ANZ200-112015-
343 AM EDT Wed Sep 11 2019

.Synopsis for Massachusetts and Rhode Island coastal waters...
South to southwest winds will continue across the waters today. A
weak trough will bring the chance for showers and a few
thunderstorms this afternoon and evening. A cold front crosses the
waters overnight into early Thu morning. High pres will build
across New England and the waters through Fri. The high shifts
offshore Fri night. Another cold front will push across late Sat
night into Sunday morning, followed by high pressure.

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.

$$

ANZ250-112015-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
343 AM EDT Wed Sep 11 2019

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.TODAY...SW winds 10 to 15 kt, increasing to 15 to 20 kt this
afternoon. Gusts up to 25 kt. Seas around 5 ft.
.TONIGHT...SW winds 10 to 15 kt with gusts up to 25 kt, becoming
NW after midnight. Seas 4 to 5 ft.
.THU...NE winds 10 to 15 kt with gusts up to 20 kt. Seas around
4 ft.
.THU NIGHT...NE winds 10 to 15 kt. Seas around 4 ft.
.FRI...E winds 10 to 15 kt. Seas around 4 ft.
.FRI NIGHT...SE winds 10 to 15 kt. Gusts up to 20 kt after
midnight. Seas 3 to 4 ft.
.SAT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
5 ft. A chance of showers in the afternoon.
.SAT NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 4 to 5 ft. A chance of showers.
.SUN...W winds 5 to 10 kt. Seas around 3 ft.
.SUN NIGHT...W winds 5 to 10 kt. Seas 3 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.

$$

ANZ251-112015-
Massachusetts Bay and Ipswich Bay-
343 AM EDT Wed Sep 11 2019

.TODAY...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around
3 ft.
.TONIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas
2 to 3 ft.
.THU...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
4 ft.
.THU NIGHT...NE winds 5 to 10 kt. Seas around 3 ft.
.FRI...E winds around 10 kt. Seas around 3 ft.
.FRI NIGHT...SE winds 5 to 10 kt. Seas around 3 ft.
.SAT...S winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas around 4 ft. A chance of showers in the afternoon.
.SAT NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of
showers in the evening.
.SUN...W winds 5 to 10 kt. Seas around 2 ft.
.SUN NIGHT...W 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.

$$

ANZ231-112015-
Cape Cod Bay-
343 AM EDT Wed Sep 11 2019

...SMALL CRAFT ADVISORY IN EFFECT FROM 9 AM EDT THIS MORNING
THROUGH THIS EVENING...

.TODAY...SW winds 10 to 15 kt, increasing to 15 to 20 kt this
afternoon. Gusts up to 25 kt. Seas 2 to 3 ft.
.TONIGHT...SW winds 10 to 15 kt with gusts up to 25 kt, becoming
W 5 to 10 kt after midnight. Seas 2 to 3 ft.
.THU...NE winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft.
.THU NIGHT...NE winds 10 to 15 kt, diminishing to 5 to 10 kt with
gusts up to 20 kt after midnight. Seas around 2 ft.
.FRI...NE winds around 10 kt. Gusts up to 20 kt in the morning.
Seas around 2 ft.
.FRI NIGHT...SE winds around 10 kt. Seas around 2 ft.
.SAT...S winds 10 to 15 kt with gusts up to 20 kt. Seas around
3 ft. A chance of showers in the afternoon.
.SAT NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. A chance of
showers.
.SUN...W winds 5 to 10 kt. Seas around 2 ft.
.SUN NIGHT...W 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.

$$

ANZ254-112015-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
343 AM EDT Wed Sep 11 2019

...SMALL CRAFT ADVISORY IN EFFECT FROM 9 AM EDT THIS MORNING
THROUGH LATE TONIGHT...

.TODAY...SW winds 10 to 15 kt, increasing to 15 to 20 kt this
afternoon. Gusts up to 25 kt. Seas around 4 ft, building to 6 ft
this afternoon.
.TONIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to
5 ft. Patchy fog after midnight with vsby 1 NM or less.
.THU...N winds 10 to 15 kt with gusts up to 20 kt. Seas around
4 ft. Patchy fog in the morning with vsby 1 NM or less.
.THU NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas
4 to 5 ft.
.FRI...NE winds 10 to 15 kt with gusts up to 20 kt. Seas around
5 ft.
.FRI NIGHT...SE winds around 10 kt. Seas around 4 ft.
.SAT...S winds 10 to 15 kt. Seas around 4 ft. A chance of showers
in the afternoon.
.SAT NIGHT...SW winds 10 to 15 kt. Seas around 4 ft. A chance of
showers.
.SUN...W winds 5 to 10 kt. Seas 3 to 4 ft. A chance of showers in
the morning.
.SUN NIGHT...W winds 5 to 10 kt. Seas 3 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.

$$

ANZ255-112015-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
343 AM EDT Wed Sep 11 2019

...SMALL CRAFT ADVISORY IN EFFECT FROM NOON EDT TODAY THROUGH
THURSDAY MORNING...

.TODAY...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to
5 ft.
.TONIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas
around 5 ft. Patchy fog. Vsby 1 to 3 NM, decreasing to 1 NM or
less after midnight.
.THU...N winds 10 to 15 kt with gusts up to 25 kt. Seas around
4 ft. A chance of showers. Patchy fog in the morning with vsby
1 NM or less.
.THU NIGHT...NE winds 10 to 15 kt, increasing to 15 to 20 kt
after midnight. Gusts up to 25 kt. Seas 4 to 5 ft.
.FRI...NE winds 15 to 20 kt, becoming E 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas around 5 ft.
.FRI NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas
around 4 ft.
.SAT...S winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas around 4 ft.
.SAT NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas around 4 ft. A chance of showers.
.SUN...SW winds 5 to 10 kt. Seas 3 to 4 ft. A chance of showers
in the morning.
.SUN NIGHT...W winds 5 to 10 kt. Seas 4 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.

$$

ANZ256-112015-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
343 AM EDT Wed Sep 11 2019

...SMALL CRAFT ADVISORY IN EFFECT FROM NOON EDT TODAY THROUGH
THURSDAY MORNING...

.TODAY...SW winds 10 to 15 kt, increasing to 15 to 20 kt this
afternoon. Gusts up to 25 kt. Seas 4 to 5 ft.
.TONIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to
5 ft. A chance of showers in the evening. Patchy fog after
midnight. Vsby 1 to 3 NM, decreasing to 1 NM or less after
midnight.
.THU...NE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas around 4 ft. Patchy fog in the morning. A chance of showers
in the morning with vsby 1 NM or less.
.THU NIGHT...NE winds 10 to 15 kt, increasing to 15 to 20 kt
after midnight. Gusts up to 25 kt. Seas 4 to 5 ft.
.FRI...E winds 15 to 20 kt with gusts up to 25 kt. Seas around
5 ft.
.FRI NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas
4 to 5 ft.
.SAT...S winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas around 4 ft. A chance of showers in the afternoon.
.SAT NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas around 4 ft. A chance of showers.
.SUN...W winds 5 to 10 kt. Seas 3 to 4 ft. A chance of showers in
the morning.
.SUN NIGHT...W winds 5 to 10 kt. Seas 4 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.

$$

ANZ232-112015-
Nantucket Sound-
343 AM EDT Wed Sep 11 2019

...SMALL CRAFT ADVISORY IN EFFECT FROM 9 AM EDT THIS MORNING
THROUGH THIS EVENING...

.TODAY...SW winds 10 to 15 kt, increasing to 15 to 20 kt this
afternoon. Gusts up to 25 kt. Seas around 2 ft, building to 4 ft
this afternoon.
.TONIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
3 ft. Patchy fog after midnight with vsby 1 to 3 NM.
.THU...NE winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft. Patchy fog in the morning. A chance of showers in the
morning with vsby 1 to 3 NM.
.THU NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas
around 3 ft.
.FRI...NE winds 10 to 15 kt with gusts up to 25 kt. Seas around
3 ft.
.FRI NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft.
.SAT...SE winds 5 to 10 kt, becoming S 10 to 15 kt in the
afternoon. Gusts up to 20 kt. Seas around 3 ft. A chance of
showers in the afternoon.
.SAT NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas around 3 ft. A chance of showers.
.SUN...SW winds 5 to 10 kt. Seas around 2 ft. A chance of showers
in the morning.
.SUN NIGHT...W 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.

$$

ANZ233-112015-
Vineyard Sound-
343 AM EDT Wed Sep 11 2019

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM EDT THIS MORNING
THROUGH THIS EVENING...

.TODAY...SW winds 10 to 15 kt, increasing to 15 to 20 kt this
afternoon. Gusts up to 25 kt. Seas 3 to 4 ft.
.TONIGHT...SW winds 10 to 15 kt with gusts up to 25 kt, becoming
W 5 to 10 kt after midnight. Seas 3 to 4 ft. Patchy fog after
midnight with vsby 1 to 3 NM.
.THU...N winds 5 to 10 kt, becoming NE 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas around 2 ft. Patchy fog in the
morning. A chance of showers in the morning with vsby 1 to 3 NM.
.THU NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas
around 3 ft.
.FRI...E winds 10 to 15 kt with gusts up to 20 kt. Seas around
3 ft.
.FRI NIGHT...SE winds around 10 kt. Seas 2 to 3 ft.
.SAT...S winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 3 to 4 ft. A chance of showers in the afternoon.
.SAT NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 3 to 4 ft. A chance of showers.
.SUN...SW winds 5 to 10 kt. Seas 2 to 3 ft.
.SUN NIGHT...W 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.

$$

ANZ234-112015-
Buzzards Bay-
343 AM EDT Wed Sep 11 2019

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM EDT THIS MORNING
THROUGH THIS EVENING...

.TODAY...SW winds 10 to 15 kt, increasing to 15 to 20 kt this
afternoon. Gusts up to 30 kt. Seas 3 to 4 ft.
.TONIGHT...SW winds 10 to 15 kt with gusts up to 25 kt, becoming
W 5 to 10 kt after midnight. Seas 2 to 3 ft. Patchy fog after
midnight with vsby 1 NM or less.
.THU...N winds 5 to 10 kt, becoming NE 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas around 2 ft. Patchy fog in the
morning with vsby 1 to 3 NM.
.THU NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas
around 2 ft.
.FRI...E winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft.
.FRI NIGHT...SE winds 5 to 10 kt. Seas around 2 ft.
.SAT...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Seas around 3 ft. A chance of
showers in the afternoon.
.SAT NIGHT...SW winds 10 to 15 kt, diminishing to 5 to 10 kt
after midnight. Seas around 3 ft. A chance of showers.
.SUN...W winds 5 to 10 kt. Seas around 2 ft.
.SUN NIGHT...W 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.

$$

ANZ235-112015-
Rhode Island Sound-
343 AM EDT Wed Sep 11 2019

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM EDT THIS MORNING
THROUGH THIS EVENING...

.TODAY...SW winds 10 to 15 kt, increasing to 15 to 20 kt this
afternoon. Gusts up to 25 kt. Seas 4 to 5 ft.
.TONIGHT...SW winds 10 to 15 kt with gusts up to 25 kt, becoming
W 5 to 10 kt after midnight. Seas 4 to 5 ft. Patchy fog after
midnight with vsby 1 NM or less.
.THU...N winds 5 to 10 kt, becoming NE 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas around 3 ft. Patchy fog in the
morning. A chance of showers in the morning with vsby 1 NM or
less.
.THU NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas
around 3 ft.
.FRI...E winds 10 to 15 kt with gusts up to 20 kt. Seas around
4 ft.
.FRI NIGHT...SE winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas around 4 ft.
.SAT...S winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas around 4 ft. A chance of showers in the afternoon.
.SAT NIGHT...SW winds 10 to 15 kt. Seas around 4 ft. A chance of
showers.
.SUN...W winds 5 to 10 kt. Seas 3 to 4 ft.
.SUN NIGHT...W winds 5 to 10 kt. Seas 3 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.

$$

ANZ237-112015-
Block Island Sound-
343 AM EDT Wed Sep 11 2019

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM EDT THIS MORNING
THROUGH THIS EVENING...

.TODAY...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to
4 ft.
.TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming
W 5 to 10 kt after midnight. Seas 3 to 4 ft. Patchy fog. A chance
of showers in the evening. Vsby 1 to 3 NM, decreasing to 1 NM or
less after midnight.
.THU...N winds 5 to 10 kt, becoming NE 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas around 3 ft. Patchy fog in the
morning. A chance of showers in the morning with vsby 1 NM or
less.
.THU NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas
around 3 ft.
.FRI...E winds 10 to 15 kt with gusts up to 20 kt. Seas around
4 ft.
.FRI NIGHT...E winds 10 to 15 kt with gusts up to 20 kt, becoming
SE 5 to 10 kt after midnight. Seas around 4 ft.
.SAT...S winds 5 to 10 kt. Seas around 4 ft. A chance of showers
in the afternoon.
.SAT NIGHT...SW winds 5 to 10 kt. Seas around 4 ft. A chance of
showers.
.SUN...W winds 5 to 10 kt. Seas 3 to 4 ft.
.SUN NIGHT...W winds 5 to 10 kt. Seas 3 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.

$$

ANZ230-112015-
Boston Harbor-
343 AM EDT Wed Sep 11 2019

.TODAY...SW winds around 10 kt with gusts up to 20 kt. Waves
around 2 ft.
.TONIGHT...SW winds around 10 kt, becoming NW after midnight.
Waves around 2 ft in the evening, then 1 foot or less.
.THU...NE winds 5 to 10 kt. Waves 2 to 3 ft.
.THU NIGHT...NE winds 5 to 10 kt. Waves around 3 ft in the
evening, then 1 foot or less.
.FRI...E winds 5 to 10 kt. Waves 1 foot or less.
.FRI NIGHT...SE winds 5 to 10 kt. Waves around 2 ft in the
evening, then 1 foot or less.
.SAT...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Waves around 2 ft. A chance of
showers in the afternoon.
.SAT NIGHT...SW winds around 10 kt. Waves around 2 ft in the
evening, then 1 foot or less. A chance of showers in the evening.
.SUN...W winds 5 to 10 kt. Waves 1 foot or less.
.SUN NIGHT...W winds 5 to 10 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.

$$

ANZ236-112015-
Narragansett Bay-
343 AM EDT Wed Sep 11 2019

...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH THIS AFTERNOON...

.TODAY...SW winds 10 to 15 kt with gusts up to 25 kt. Waves 3 to
4 ft.
.TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming
W 5 to 10 kt after midnight. Waves around 3 ft. Patchy fog after
midnight with vsby 1 to 3 NM.
.THU...NE winds 5 to 10 kt. Waves around 2 ft.
.THU NIGHT...NE winds 5 to 10 kt. Waves around 2 ft.
.FRI...E winds 5 to 10 kt with gusts up to 20 kt. Waves around
2 ft.
.FRI NIGHT...SE winds 5 to 10 kt. Waves 2 to 3 ft.
.SAT...S winds 5 to 10 kt. Waves around 4 ft. A chance of showers
in the afternoon.
.SAT NIGHT...SW winds 5 to 10 kt. Waves around 3 ft. A chance of
showers.
.SUN...W winds 5 to 10 kt. Waves around 3 ft.
.SUN NIGHT...W 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/us.nationalweatherservice.boston.gov

You can follow us on Twitter at
@NWSBoston