Coastal Waters Forecast
Issued by NWS Boston, MA

Current Version | Previous Version | Text Only | Print | Product List | Glossary On
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
690
FZUS51 KBOX 210755
CWFBOX

Coastal Waters Forecast
National Weather Service Taunton MA
355 AM EDT Sat Oct 21 2017

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

ANZ200-212015-
355 AM EDT Sat Oct 21 2017

.Synopsis for Massachusetts and Rhode Island coastal waters...
Strong high pressure will move east across the southern New
England coastal waters today, then east of New England Sunday. A
strong cold front approaches from the west late Tuesday.

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.

$$

ANZ250-212015-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
355 AM EDT Sat Oct 21 2017

.TODAY...W winds around 5 kt, becoming S this afternoon. Seas
2 to 3 ft.
.TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft.
.SUN...S winds 5 to 10 kt. Gusts up to 20 kt in the afternoon.
Seas 2 to 3 ft.
.SUN NIGHT...S winds 5 to 10 kt. Gusts up to 20 kt in the
evening. Seas 2 to 3 ft.
.MON...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Seas 2 to 3 ft.
.MON NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 4 ft.
.TUE...S winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to
7 ft. Areas of fog. A chance of showers. Vsby 1 to 3 NM.
.TUE NIGHT...S winds 20 to 25 kt with gusts up to 35 kt. Seas
7 to 10 ft. Areas of fog. Showers with a chance of tstms. Vsby
1 to 3 NM.
.WED...S winds 15 to 20 kt with gusts up to 35 kt. Seas 7 to
10 ft. Areas of fog. Showers. Vsby 1 to 3 NM.
.WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
5 to 8 ft. Areas of fog. Showers likely. Vsby 1 to 3 NM.

Winds and seas higher in and near tstms.

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.

$$

ANZ251-212015-
Massachusetts Bay and Ipswich Bay-
355 AM EDT Sat Oct 21 2017

.TODAY...W winds around 5 kt, becoming S this afternoon. Seas
around 2 ft.
.TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft.
.SUN...W winds around 5 kt, becoming S in the afternoon. Seas
around 2 ft.
.SUN NIGHT...S winds 5 to 10 kt. Seas around 2 ft.
.MON...S winds 5 to 10 kt. Seas around 2 ft.
.MON NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Areas of fog.
Vsby 1 to 3 NM.
.TUE...S winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft. Areas of fog. A chance of showers. Vsby 1 to 3 NM.
.TUE NIGHT...S winds 15 to 20 kt with gusts up to 30 kt. Seas
4 to 7 ft. Areas of fog. Showers with a chance of tstms. Vsby
1 to 3 NM.
.WED...S winds 10 to 15 kt with gusts up to 35 kt. Seas 4 to
6 ft. Areas of fog. Showers. Vsby 1 to 3 NM.
.WED NIGHT...SW winds 5 to 10 kt with gusts up to 20 kt. Seas
2 to 4 ft. Areas of fog. A chance of showers. Vsby 1 to 3 NM.

Winds and seas higher in and near tstms.

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.

$$

ANZ231-212015-
Cape Cod Bay-
355 AM EDT Sat Oct 21 2017

.TODAY...W winds around 5 kt, becoming SW this afternoon. Seas
1 foot or less.
.TONIGHT...SW winds 5 to 10 kt. Seas 1 foot or less.
.SUN...SW winds 5 to 10 kt. Seas 1 foot or less.
.SUN NIGHT...S winds 5 to 10 kt. Seas 1 foot or less.
.MON...S winds 5 to 10 kt. Seas around 2 ft.
.MON NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Areas of fog.
Vsby 1 to 3 NM.
.TUE...S winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft. Areas of fog. A chance of showers. Vsby 1 to 3 NM.
.TUE NIGHT...S winds 20 to 25 kt with gusts up to 30 kt. Seas
3 to 5 ft. Areas of fog. Showers with a chance of tstms. Vsby
1 to 3 NM.
.WED...S winds 15 to 20 kt with gusts up to 35 kt. Seas 2 to
4 ft. Areas of fog. Showers. Vsby 1 to 3 NM.
.WED NIGHT...SW winds 5 to 10 kt with gusts up to 20 kt. Seas
2 to 3 ft. Areas of fog. Showers likely. Vsby 1 to 3 NM.

Winds and seas higher in and near tstms.

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.

$$

ANZ254-212015-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
355 AM EDT Sat Oct 21 2017

.TODAY...N winds around 5 kt, becoming SW 5 to 10 kt with gusts
up to 20 kt this afternoon. Seas 2 to 3 ft.
.TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft.
.SUN...S winds 5 to 10 kt. Seas 2 to 3 ft.
.SUN NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft.
.MON...S winds 5 to 10 kt. Seas 2 to 3 ft.
.MON NIGHT...S winds around 10 kt. Seas 3 to 5 ft.
.TUE...S winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to
7 ft. Areas of fog. A chance of showers. Vsby 1 to 3 NM.
.TUE NIGHT...S winds 20 to 25 kt with gusts up to 40 kt. Seas
8 to 11 ft, except 10 to 15 ft S and E of Nantucket. Areas of
fog. Showers. Vsby 1 to 3 NM.
.WED...S winds 15 to 20 kt with gusts up to 40 kt. Seas 8 to
11 ft, except 11 to 16 ft S and E of Nantucket. Areas of fog.
Showers with a chance of tstms. Vsby 1 to 3 NM.
.WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
7 to 10 ft. Areas of fog. Showers likely. Vsby 1 to 3 NM.

Winds and seas higher in and near tstms.

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.

$$

ANZ255-212015-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
355 AM EDT Sat Oct 21 2017

.TODAY...NE winds around 5 kt, becoming SW this afternoon. Seas
2 to 3 ft.
.TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft.
.SUN...SW winds 5 to 10 kt. Seas 2 to 3 ft.
.SUN NIGHT...S winds around 5 kt. Seas around 2 ft.
.MON...S winds 5 to 10 kt. Seas 2 to 3 ft.
.MON NIGHT...S winds 10 to 15 kt. Seas 3 to 5 ft. Areas of fog.
Vsby 1 to 3 NM.
.TUE...S winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to
8 ft. Areas of fog. A chance of showers. Vsby 1 to 3 NM.
.TUE NIGHT...S winds 20 to 25 kt with gusts up to 40 kt. Seas
9 to 14 ft. Areas of fog. Showers with a chance of tstms. Vsby
1 to 3 NM.
.WED...S winds 15 to 20 kt with gusts up to 40 kt. Seas 9 to
14 ft. Areas of fog. Showers with a chance of tstms. Vsby 1 to
3 NM.
.WED NIGHT...SW winds 5 to 10 kt with gusts up to 20 kt. Seas
7 to 10 ft. Areas of fog. Showers likely. Vsby 1 to 3 NM.

Winds and seas higher in and near tstms.

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.

$$

ANZ256-212015-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
355 AM EDT Sat Oct 21 2017

.TODAY...NE winds 5 to 10 kt, becoming SW this afternoon. Seas
2 to 3 ft.
.TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft.
.SUN...SW winds 5 to 10 kt. Seas 2 to 3 ft.
.SUN NIGHT...S winds 5 to 10 kt. Seas around 2 ft.
.MON...S winds 5 to 10 kt. Seas 2 to 3 ft.
.MON NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt after
midnight. Seas 2 to 4 ft. Areas of fog. Vsby 1 to 3 NM.
.TUE...S winds 15 to 20 kt with gusts up to 30 kt. Seas 6 to
9 ft. Areas of fog. A chance of showers. Vsby 1 to 3 NM.
.TUE NIGHT...S winds 20 to 25 kt with gusts up to 35 kt. Seas
9 to 14 ft. Areas of fog. Showers with a chance of tstms. Vsby
1 to 3 NM.
.WED...S winds 15 to 20 kt with gusts up to 35 kt. Seas 10 to
13 ft. Areas of fog. Showers likely. Vsby 1 to 3 NM.
.WED NIGHT...SW winds around 10 kt with gusts up to 20 kt. Seas
8 to 11 ft. Areas of fog. A chance of showers. Vsby 1 to 3 NM.

Winds and seas higher in and near tstms.

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.

$$

ANZ232-212015-
Nantucket Sound-
355 AM EDT Sat Oct 21 2017

.TODAY...N winds around 5 kt, becoming SW this afternoon. Seas
around 2 ft.
.TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft.
.SUN...SW winds 5 to 10 kt. Seas 1 foot or less.
.SUN NIGHT...S winds 5 to 10 kt. Seas 1 foot or less.
.MON...S winds 5 to 10 kt. Seas around 2 ft.
.MON NIGHT...S winds around 10 kt. Seas 2 to 3 ft. Areas of fog.
Vsby 1 to 3 NM.
.TUE...S winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft. Areas of fog. A chance of showers. Vsby 1 to 3 NM.
.TUE NIGHT...S winds 20 to 25 kt with gusts up to 35 kt. Seas
4 to 6 ft. Areas of fog. Showers with a chance of tstms. Vsby
1 to 3 NM.
.WED...S winds 15 to 20 kt with gusts up to 35 kt. Seas 3 to
5 ft. Areas of fog. Showers. Vsby 1 to 3 NM.
.WED NIGHT...SW winds 5 to 10 kt with gusts up to 20 kt. Seas
3 to 5 ft. Areas of fog. Showers likely. Vsby 1 to 3 NM.

Winds and seas higher in and near tstms.

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.

$$

ANZ233-212015-
Vineyard Sound-
355 AM EDT Sat Oct 21 2017

.TODAY...N winds around 5 kt, becoming SW this afternoon. Seas
around 2 ft.
.TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft.
.SUN...SW winds 5 to 10 kt. Seas 1 foot or less.
.SUN NIGHT...S winds 5 to 10 kt. Seas 1 foot or less.
.MON...S winds 5 to 10 kt. Seas around 2 ft.
.MON NIGHT...S winds around 10 kt. Gusts up to 20 kt after
midnight. Seas 2 to 3 ft. Areas of fog. Vsby 1 to 3 NM.
.TUE...S winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to
5 ft. Areas of fog. A chance of showers. Vsby 1 to 3 NM.
.TUE NIGHT...S winds 20 to 25 kt with gusts up to 35 kt. Seas
4 to 7 ft. Areas of fog. Showers with a chance of tstms. Vsby
1 to 3 NM.
.WED...S winds 10 to 15 kt with gusts up to 35 kt. Seas 4 to
7 ft. Areas of fog. Showers. Vsby 1 to 3 NM.
.WED NIGHT...SW winds 5 to 10 kt with gusts up to 20 kt. Seas
4 to 6 ft. Areas of fog. Showers likely. Vsby 1 to 3 NM.

Winds and seas higher in and near tstms.

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.

$$

ANZ234-212015-
Buzzards Bay-
355 AM EDT Sat Oct 21 2017

.TODAY...NW winds around 5 kt, becoming SW this afternoon. Seas
1 foot or less.
.TONIGHT...SW winds 5 to 10 kt. Seas 1 foot or less.
.SUN...SW winds around 5 kt, increasing to 5 to 10 kt in the
afternoon. Seas 1 foot or less.
.SUN NIGHT...S winds 5 to 10 kt. Seas 1 foot or less.
.MON...S winds 5 to 10 kt. Gusts up to 20 kt in the afternoon.
Seas 1 foot or less.
.MON NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Areas of fog.
Vsby 1 to 3 NM.
.TUE...S winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to
4 ft. Areas of fog. A chance of showers. Vsby 1 to 3 NM.
.TUE NIGHT...S winds 15 to 20 kt with gusts up to 30 kt. Seas
3 to 5 ft. Areas of fog. Showers with a chance of tstms. Vsby
1 to 3 NM.
.WED...S winds 10 to 15 kt with gusts up to 35 kt. Seas 4 to
6 ft. Areas of fog. Showers. Vsby 1 to 3 NM.
.WED NIGHT...SW winds 5 to 10 kt with gusts up to 20 kt. Seas
2 to 4 ft. Areas of fog. A chance of showers. Vsby 1 to 3 NM.

Winds and seas higher in and near tstms.

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.

$$

ANZ235-212015-
Rhode Island Sound-
355 AM EDT Sat Oct 21 2017

.TODAY...N winds 5 to 10 kt, becoming SW this afternoon. Seas
2 to 3 ft.
.TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft.
.SUN...SW winds 5 to 10 kt. Seas around 2 ft.
.SUN NIGHT...S winds 5 to 10 kt. Seas around 2 ft.
.MON...S winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. Seas around 2 ft.
.MON NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft. Areas of fog. Vsby 1 to 3 NM.
.TUE...S winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to
6 ft. Areas of fog. A chance of showers. Vsby 1 to 3 NM.
.TUE NIGHT...S winds 20 to 25 kt with gusts up to 35 kt. Seas
6 to 9 ft. Areas of fog. Showers with a chance of tstms. Vsby
1 to 3 NM.
.WED...S winds 10 to 15 kt with gusts up to 35 kt. Seas 6 to
9 ft. Areas of fog. Showers likely. Vsby 1 to 3 NM.
.WED NIGHT...SW winds 5 to 10 kt with gusts up to 20 kt. Seas
6 to 9 ft. Areas of fog. A chance of showers. Vsby 1 to 3 NM.

Winds and seas higher in and near tstms.

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.

$$

ANZ237-212015-
Block Island Sound-
355 AM EDT Sat Oct 21 2017

.TODAY...NE winds around 5 kt, becoming SW this afternoon. Seas
2 to 3 ft.
.TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft.
.SUN...SW winds 5 to 10 kt. Seas around 2 ft.
.SUN NIGHT...S winds 5 to 10 kt. Seas around 2 ft.
.MON...S winds 5 to 10 kt. Seas around 2 ft.
.MON NIGHT...S winds around 10 kt. Seas 2 to 4 ft. Areas of fog.
Vsby 1 to 3 NM.
.TUE...S winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to
7 ft. Areas of fog. A chance of showers. Vsby 1 to 3 NM.
.TUE NIGHT...S winds 20 to 25 kt with gusts up to 30 kt. Seas
6 to 9 ft. Areas of fog. Showers likely. Vsby 1 to 3 NM.
.WED...SW winds 10 to 15 kt with gusts up to 30 kt. Seas 6 to
9 ft. Areas of fog. Showers likely. Vsby 1 to 3 NM.
.WED NIGHT...W winds 5 to 10 kt. Seas 5 to 8 ft. Areas of fog. A
chance of showers. 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.

$$

ANZ230-212015-
Boston Harbor-
355 AM EDT Sat Oct 21 2017

.TODAY...SW winds around 5 kt. Waves 1 foot or less.
.TONIGHT...SW winds around 5 kt. Waves 1 foot or less.
.SUN...SW winds around 5 kt, becoming S around 5 kt in the
afternoon. Waves 1 foot or less.
.SUN NIGHT...S winds around 5 kt. Waves 1 foot or less.
.MON...S winds 5 to 10 kt. Waves 1 foot or less.
.MON NIGHT...S winds 5 to 10 kt. Waves 1 foot or less. Areas of
fog. Vsby 1 to 3 NM.
.TUE...S winds 10 to 15 kt with gusts up to 25 kt. Waves around
2 ft. Areas of fog. A chance of showers. Vsby 1 to 3 NM.
.TUE NIGHT...S winds 10 to 15 kt with gusts up to 30 kt. Waves
around 2 ft. Areas of fog. Showers with a chance of tstms. Vsby
1 to 3 NM.
.WED...S winds 5 to 10 kt with gusts up to 30 kt. Waves around
2 ft. Areas of fog. Showers likely. Vsby 1 to 3 NM.
.WED NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less. Areas of
fog. A chance of showers. Vsby 1 to 3 NM.

Winds and waves higher in and near tstms.

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.

$$

ANZ236-212015-
Narragansett Bay-
355 AM EDT Sat Oct 21 2017

.TODAY...NW winds around 5 kt, becoming SW 5 to 10 kt this
afternoon. Waves around 2 ft.
.TONIGHT...SW winds 5 to 10 kt. Waves around 2 ft.
.SUN...SW winds around 5 kt, becoming S in the afternoon. Waves
around 2 ft.
.SUN NIGHT...S winds around 5 kt. Waves around 2 ft. Areas of
fog. Vsby 1 to 3 NM.
.MON...S winds 5 to 10 kt. Waves around 2 ft.
.MON NIGHT...S winds 5 to 10 kt. Waves around 2 ft. Areas of fog.
Vsby 1 to 3 NM.
.TUE...S winds 15 to 20 kt with gusts up to 25 kt. Waves 2 to
4 ft. Areas of fog. A chance of showers. Vsby 1 to 3 NM.
.TUE NIGHT...S winds 15 to 20 kt with gusts up to 30 kt. Waves
3 to 5 ft. Areas of fog. Showers. Vsby 1 to 3 NM.
.WED...S winds 10 to 15 kt with gusts up to 30 kt. Waves 2 to
4 ft, except 4 to 7 ft at the bay entrance. Areas of fog. Showers
likely. Vsby 1 to 3 NM.
.WED NIGHT...SW winds 5 to 10 kt. Waves 2 to 4 ft. Areas of fog.
A chance of showers. 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.

$$

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.