Coastal Waters Forecast
Issued by NWS Boston, MA

Current Version | Previous Version | Graphics & Text | Print | Product List | Glossary Off
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 241952
CWFBOX

Coastal Waters Forecast
National Weather Service Taunton MA
352 PM EDT Sun Sep 24 2017

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

ANZ200-250815-
352 PM EDT Sun Sep 24 2017

.Synopsis for Massachusetts and Rhode Island coastal waters...
High pressure over the eastern USA will bring light wind and dry
weather to the waters through Tuesday. Southerly swell from
Hurricane Maria will continue to move north into the waters and
linger for much of the week. A cold front from Canada will cross
the waters later Wednesday or early Thursday. Mariners should
monitor the latest forecasts from the National Hurricane Center at
www.nhc.noaa.gov.

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.

$$

ANZ250-250815-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
352 PM EDT Sun Sep 24 2017

.TONIGHT...S winds around 5 kt. Seas 2 to 4 ft. Patchy fog. Vsby
1 NM or less.
.MON...SE winds around 5 kt, becoming E in the afternoon. Seas
2 to 4 ft. Areas of fog. Vsby 1 NM or less.
.MON NIGHT...S winds around 5 kt. Seas 2 to 4 ft. Patchy fog.
Vsby 1 NM or less.
.TUE...S winds around 5 kt. Seas 2 to 4 ft. Patchy fog. Vsby 1 NM
or less.
.TUE NIGHT...S winds 5 to 10 kt. Seas 2 to 4 ft. Patchy fog. Vsby
1 to 3 NM.
.WED...SE winds 5 to 10 kt. Seas 2 to 4 ft. Patchy fog. A chance
of showers. Vsby 1 to 3 NM.
.WED NIGHT...S winds 5 to 10 kt. Seas 2 to 4 ft. A chance of
showers.
.THU...W winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers.
.THU NIGHT...N winds 15 to 20 kt. Seas 4 to 6 ft.
.FRI...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft.
.FRI NIGHT...NE winds 10 to 15 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.

$$

ANZ251-250815-
Massachusetts Bay and Ipswich Bay-
352 PM EDT Sun Sep 24 2017

.TONIGHT...S winds around 5 kt. Seas around 2 ft.
.MON...SE winds around 5 kt, becoming E in the afternoon. Seas
around 2 ft. Patchy fog. Vsby 1 NM or less.
.MON NIGHT...S winds around 5 kt. Seas around 2 ft. Patchy fog.
Vsby 1 NM or less.
.TUE...SE winds around 5 kt. Seas around 2 ft. Patchy fog. Vsby
1 NM or less.
.TUE NIGHT...S winds around 5 kt. Seas around 2 ft. Patchy fog.
Vsby 1 to 3 NM.
.WED...SE winds around 5 kt, increasing to 5 to 10 kt in the
afternoon. Seas 2 to 3 ft. Patchy fog. A chance of showers. Vsby
1 to 3 NM.
.WED NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. A chance of
showers.
.THU...W winds 5 to 10 kt. Seas 2 to 3 ft.
.THU NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft.
.FRI...NE winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to
4 ft.
.FRI NIGHT...NE 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.

$$

ANZ231-250815-
Cape Cod Bay-
352 PM EDT Sun Sep 24 2017

.TONIGHT...SE winds around 5 kt. Seas around 2 ft. Patchy fog
this evening, then areas of fog after midnight. Vsby 1 NM or
less.
.MON...E winds around 5 kt. Seas around 2 ft. Areas of fog. Vsby
1 NM or less.
.MON NIGHT...SE winds around 5 kt. Seas around 2 ft. Patchy fog.
Vsby 1 NM or less.
.TUE...SE winds around 5 kt. Seas around 2 ft. Patchy fog. Vsby
1 NM or less.
.TUE NIGHT...SE winds around 5 kt. Seas around 2 ft. Patchy fog.
Vsby 1 to 3 NM.
.WED...SE winds around 5 kt, increasing to 5 to 10 kt in the
afternoon. Seas around 2 ft. Patchy fog. A chance of showers.
Vsby 1 to 3 NM.
.WED NIGHT...S winds 5 to 10 kt. Seas around 2 ft. A chance of
showers.
.THU...NW winds 5 to 10 kt. Seas around 2 ft. A chance of
showers.
.THU NIGHT...N winds 10 to 15 kt with gusts up to 25 kt. Seas
2 to 4 ft.
.FRI...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft.
.FRI NIGHT...NE winds 5 to 10 kt with gusts up 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.

$$

ANZ254-250815-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
352 PM EDT Sun Sep 24 2017

...SMALL CRAFT ADVISORY FOR HAZARDOUS SEAS IN EFFECT THROUGH
TUESDAY AFTERNOON...

.TONIGHT...NE winds 5 to 10 kt, becoming E after midnight. Seas
3 to 5 ft. Patchy fog this evening, then areas of dense fog after
midnight. Vsby 1 NM or less.
.MON...E winds 5 to 10 kt. Seas 4 to 6 ft. Areas of fog. Vsby
1 NM or less.
.MON NIGHT...SE winds around 5 kt. Seas 4 to 7 ft. Patchy fog. A
chance of showers. Vsby 1 NM or less.
.TUE...SE winds around 5 kt. Seas 4 to 7 ft, except 8 to 11 ft S
and E of Nantucket. Patchy fog. A chance of showers. Vsby 1 NM or
less.
.TUE NIGHT...SE winds around 5 kt. Seas 5 to 8 ft, except 9 to
11 ft S and E of Nantucket. Patchy fog. Vsby 1 to 3 NM.
.WED...SE winds 5 to 10 kt. Seas 5 to 8 ft, except 9 to 11 ft S
and E of Nantucket. Patchy fog. Vsby 1 to 3 NM.
.WED NIGHT...S winds 5 to 10 kt. Seas 5 to 8 ft. A chance of
showers.
.THU...W winds 5 to 10 kt. Seas 5 to 8 ft. A chance of showers.
.THU NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Seas
6 to 9 ft. A chance of showers.
.FRI...N winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to
8 ft. A chance of showers.
.FRI NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas
4 to 6 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.

$$

ANZ255-250815-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
352 PM EDT Sun Sep 24 2017

...SMALL CRAFT ADVISORY FOR HAZARDOUS SEAS IN EFFECT THROUGH
TUESDAY AFTERNOON...

.TONIGHT...NE winds 5 to 10 kt. Seas 4 to 6 ft. Areas of fog this
evening, then areas of dense fog after midnight. Vsby 1 NM or
less.
.MON...E winds 5 to 10 kt. Seas 4 to 7 ft. Areas of fog. Vsby
1 NM or less.
.MON NIGHT...E winds 5 to 10 kt. Seas 5 to 8 ft. Patchy fog. A
chance of showers. Vsby 1 NM or less.
.TUE...E winds around 5 kt. Seas 7 to 10 ft. Patchy fog. A chance
of showers. Vsby 1 NM or less.
.TUE NIGHT...E winds 5 to 10 kt. Seas 8 to 11 ft. Patchy fog.
Vsby 1 to 3 NM.
.WED...SE winds 5 to 10 kt. Seas 8 to 11 ft. Patchy fog. A chance
of showers. Vsby 1 to 3 NM.
.WED NIGHT...S winds 5 to 10 kt. Seas 7 to 10 ft. A chance of
showers.
.THU...NW winds 5 to 10 kt. Seas 7 to 10 ft. A chance of showers.
.THU NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Seas
7 to 10 ft. A chance of showers.
.FRI...N winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to
8 ft. A chance of showers.
.FRI NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas
4 to 7 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.

$$

ANZ256-250815-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
352 PM EDT Sun Sep 24 2017

...SMALL CRAFT ADVISORY FOR HAZARDOUS SEAS IN EFFECT THROUGH
TUESDAY AFTERNOON...

.TONIGHT...NE winds around 5 kt. Seas 4 to 6 ft. Patchy fog this
evening, then areas of fog after midnight. Vsby 1 NM or less.
.MON...E winds 5 to 10 kt. Seas 5 to 8 ft. Areas of fog. Vsby
1 NM or less.
.MON NIGHT...E winds 5 to 10 kt. Seas 6 to 9 ft. Patchy fog. Vsby
1 NM or less.
.TUE...E winds around 5 kt. Seas 8 to 11 ft. Patchy fog. Vsby
1 NM or less.
.TUE NIGHT...E winds 5 to 10 kt. Seas 9 to 11 ft. Patchy fog.
Vsby 1 to 3 NM.
.WED...E winds 5 to 10 kt. Seas 9 to 11 ft. Patchy fog. Vsby 1 to
3 NM.
.WED NIGHT...S winds 5 to 10 kt. Seas 9 to 11 ft. A chance of
showers.
.THU...NW winds 5 to 10 kt. Seas 9 to 11 ft. A chance of showers.
.THU NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Seas
8 to 11 ft. A chance of showers.
.FRI...N winds 15 to 20 kt with gusts up to 25 kt. Seas 6 to
9 ft.
.FRI NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas
4 to 6 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.

$$

ANZ232-250815-
Nantucket Sound-
352 PM EDT Sun Sep 24 2017

.TONIGHT...NE winds around 5 kt. Seas 2 to 3 ft. Areas of fog
this evening, then areas of dense fog after midnight. Vsby 1 NM
or less.
.MON...E winds 5 to 10 kt. Seas 2 to 4 ft. Areas of fog. Vsby
1 NM or less.
.MON NIGHT...E winds around 5 kt. Seas 2 to 4 ft. Patchy fog. A
chance of showers. Vsby 1 NM or less.
.TUE...SE winds around 5 kt. Seas 2 to 4 ft. Patchy fog. A chance
of showers. Vsby 1 NM or less.
.TUE NIGHT...SE winds around 5 kt. Seas 2 to 4 ft. Patchy fog.
Vsby 1 to 3 NM.
.WED...SE winds 5 to 10 kt. Seas 2 to 4 ft. Patchy fog. Vsby 1 to
3 NM.
.WED NIGHT...S winds 5 to 10 kt. Seas 2 to 4 ft. A chance of
showers.
.THU...NW winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers.
.THU NIGHT...N winds 10 to 15 kt with gusts up to 25 kt. Seas
3 to 5 ft. A chance of showers.
.FRI...N winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
4 ft. A chance of showers.
.FRI NIGHT...N winds 10 to 15 kt with gusts up 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.

$$

ANZ233-250815-
Vineyard Sound-
352 PM EDT Sun Sep 24 2017

.TONIGHT...NE winds around 5 kt. Seas 2 to 3 ft. Patchy fog this
evening, then areas of dense fog after midnight. Vsby 1 NM or
less.
.MON...E winds 5 to 10 kt. Seas 2 to 4 ft. Areas of fog. Vsby
1 NM or less.
.MON NIGHT...E winds 5 to 10 kt, diminishing to around 5 kt after
midnight. Seas 2 to 4 ft. Patchy fog. Vsby 1 NM or less.
.TUE...SE winds around 5 kt. Seas 3 to 5 ft. Patchy fog. A chance
of showers. Vsby 1 NM or less.
.TUE NIGHT...SE winds around 5 kt. Seas 3 to 5 ft. Patchy fog.
Vsby 1 to 3 NM.
.WED...SE winds 5 to 10 kt. Seas 3 to 5 ft. Patchy fog. Vsby 1 to
3 NM.
.WED NIGHT...S winds 5 to 10 kt. Seas 3 to 5 ft. A chance of
showers.
.THU...NW winds 5 to 10 kt. Seas 3 to 5 ft. A chance of showers.
.THU NIGHT...N winds 10 to 15 kt with gusts up to 25 kt. Seas
3 to 5 ft. A chance of showers.
.FRI...N winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
4 ft. A chance of showers.
.FRI NIGHT...N winds 10 to 15 kt with gusts up 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.

$$

ANZ234-250815-
Buzzards Bay-
352 PM EDT Sun Sep 24 2017

.TONIGHT...E winds around 5 kt. Seas 2 to 3 ft. Patchy fog this
evening, then areas of fog after midnight. Vsby 1 NM or less.
.MON...NE winds around 5 kt, becoming E in the afternoon. Seas
2 to 3 ft. Areas of fog. Vsby 1 NM or less.
.MON NIGHT...E winds 5 to 10 kt, diminishing to around 5 kt after
midnight. Seas 2 to 3 ft. Patchy fog. Vsby 1 NM or less.
.TUE...SE winds around 5 kt. Seas 2 to 4 ft. Patchy fog. Vsby
1 NM or less.
.TUE NIGHT...E winds around 5 kt. Seas 2 to 4 ft. Patchy fog.
Vsby 1 to 3 NM.
.WED...SE winds around 5 kt. Seas 2 to 4 ft. Patchy fog. Vsby
1 to 3 NM.
.WED NIGHT...S winds around 5 kt. Seas 2 to 4 ft. A chance of
showers.
.THU...NW winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers.
.THU NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft. A chance of showers.
.FRI...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft.
.FRI NIGHT...N winds 5 to 10 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.

$$

ANZ235-250815-
Rhode Island Sound-
352 PM EDT Sun Sep 24 2017

...SMALL CRAFT ADVISORY FOR HAZARDOUS SEAS IN EFFECT FROM 8 PM
EDT THIS EVENING THROUGH TUESDAY AFTERNOON...

.TONIGHT...SE winds around 5 kt, becoming NE after midnight. Seas
3 to 5 ft. Patchy fog this evening, then areas of fog after
midnight. Vsby 1 NM or less.
.MON...E winds 5 to 10 kt. Seas 4 to 6 ft. Areas of fog. Vsby
1 NM or less.
.MON NIGHT...E winds 5 to 10 kt, diminishing to around 5 kt after
midnight. Seas 4 to 6 ft. Patchy fog. Vsby 1 NM or less.
.TUE...SE winds around 5 kt. Seas 5 to 8 ft. Patchy fog. Vsby
1 NM or less.
.TUE NIGHT...E winds around 5 kt. Seas 6 to 9 ft. Patchy fog.
Vsby 1 to 3 NM.
.WED...E winds 5 to 10 kt. Seas 7 to 9 ft. Patchy fog. Vsby 1 to
3 NM.
.WED NIGHT...S winds 5 to 10 kt. Seas 6 to 9 ft. A chance of
showers.
.THU...NW winds 5 to 10 kt. Seas 6 to 8 ft.
.THU NIGHT...N winds 10 to 15 kt with gusts up to 25 kt. Seas
5 to 8 ft. A chance of showers.
.FRI...N winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to
6 ft.
.FRI NIGHT...N winds 10 to 15 kt with gusts up to 20 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.

$$

ANZ237-250815-
Block Island Sound-
352 PM EDT Sun Sep 24 2017

...SMALL CRAFT ADVISORY FOR HAZARDOUS SEAS IN EFFECT FROM 8 PM
EDT THIS EVENING THROUGH TUESDAY AFTERNOON...

.TONIGHT...S winds around 5 kt, becoming E after midnight. Seas
3 to 5 ft. Patchy fog after midnight with vsby 1 NM or less.
.MON...NE winds around 5 kt, becoming E in the afternoon. Seas
3 to 5 ft. Patchy fog. Vsby 1 NM or less.
.MON NIGHT...E winds 5 to 10 kt, diminishing to around 5 kt after
midnight. Seas 4 to 6 ft. Patchy fog. Vsby 1 NM or less.
.TUE...E winds around 5 kt. Seas 4 to 7 ft. Patchy fog. Vsby 1 NM
or less.
.TUE NIGHT...E winds around 5 kt. Seas 5 to 8 ft. Patchy fog.
Vsby 1 NM or less.
.WED...E winds 5 to 10 kt. Seas 6 to 9 ft. Patchy fog. Vsby 1 to
3 NM.
.WED NIGHT...S winds 5 to 10 kt. Seas 5 to 8 ft. A chance of
showers.
.THU...NW winds 5 to 10 kt. Seas 5 to 8 ft.
.THU NIGHT...N winds 10 to 15 kt with gusts up to 25 kt. Seas
5 to 8 ft.
.FRI...N winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
6 ft.
.FRI NIGHT...N winds 10 to 15 kt with gusts up to 20 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.

$$

ANZ230-250815-
Boston Harbor-
352 PM EDT Sun Sep 24 2017

.TONIGHT...SE winds 5 to 10 kt, becoming S after midnight. Waves
1 foot or less.
.MON...E winds around 5 kt, increasing to 5 to 10 kt in the
afternoon. Waves 1 foot or less. Patchy fog. Vsby 1 NM or less.
.MON NIGHT...S winds around 5 kt. Waves 1 foot or less. Patchy
fog. Vsby 1 NM or less.
.TUE...SE winds around 5 kt. Waves 1 foot or less. Patchy fog.
Vsby 1 NM or less.
.TUE NIGHT...S winds around 5 kt. Waves 1 foot or less. Patchy
fog. Vsby 1 to 3 NM.
.WED...SE winds around 5 kt. Waves 1 foot or less. Patchy fog. A
chance of showers. Vsby 1 to 3 NM.
.WED NIGHT...S winds around 5 kt. Waves 1 foot or less. A chance
of showers.
.THU...W winds around 5 kt. Waves 1 foot or less.
.THU NIGHT...N winds 5 to 10 kt. Waves 1 foot or less.
.FRI...N winds 5 to 10 kt. Waves 1 foot or less.
.FRI NIGHT...N 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.

$$

ANZ236-250815-
Narragansett Bay-
352 PM EDT Sun Sep 24 2017

.TONIGHT...S winds 5 to 10 kt, becoming E after midnight. Waves
2 to 3 ft. Areas of fog after midnight with vsby 1 NM or less.
.MON...NE winds around 5 kt, becoming E in the afternoon. Waves
2 to 3 ft. Patchy fog. Vsby 1 NM or less.
.MON NIGHT...E winds 5 to 10 kt, becoming NE after midnight.
Waves 2 to 3 ft. Patchy fog. Vsby 1 NM or less.
.TUE...NE winds around 5 kt, becoming SE in the afternoon. Waves
2 to 4 ft, except 4 to 7 ft at the bay entrance. Patchy fog. Vsby
1 NM or less.
.TUE NIGHT...E winds around 5 kt. Waves 2 to 4 ft, except 4 to
7 ft at the bay entrance. Patchy fog. Vsby 1 to 3 NM.
.WED...SE winds around 5 kt. Waves 3 to 5 ft. Patchy fog. Vsby
1 to 3 NM.
.WED NIGHT...S winds around 5 kt. Waves 2 to 4 ft, except 4 to
7 ft at the bay entrance. A chance of showers.
.THU...NW winds around 5 kt. Waves 2 to 4 ft.
.THU NIGHT...N winds 5 to 10 kt with gusts up to 20 kt. Waves
2 to 3 ft, except 4 to 6 ft at the bay entrance.
.FRI...N winds around 10 kt. Waves 2 to 3 ft.
.FRI NIGHT...N 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/NWSBoston

You can follow us on Twitter at
@NWSBoston



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.