National Weather Service Marine Forecast FZUS51 KBOX

FZUS51 KBOX 271106
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
705 AM EDT Sat Apr 27 2024

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

ANZ200-280000
705 AM EDT Sat Apr 27 2024

Synopsis for Massachusetts and Rhode Island coastal waters

High pressure builds into New England through today. High eventually shifts offshore on Sunday. This allows a warm front to lift in and bring scattered showers late today into early Sunday. The trailing cold front may slide through on Monday as low pressure drops from the north, followed by another low late Tuesday.

ANZ250-280000
Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary
705 AM EDT Sat Apr 27 2024

TODAY
W winds 5 to 10 kt, becoming S this afternoon. Seas around 2 ft. Wave Detail: E 2 ft at 8 seconds and S 1 ft at 3 seconds.

TONIGHT
S winds around 10 kt, becoming SW after midnight. Seas around 2 ft. Wave Detail: S 2 ft at 3 seconds and E 2 ft at 10 seconds.

SUN
SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and E 2 ft at 10 seconds.

SUN NIGHT
SW winds 10 to 15 kt, becoming W after midnight. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and E 2 ft at 10 seconds.

MON AND MON NIGHT
N winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 4 seconds and E 2 ft at 9 seconds.

TUE THROUGH WED
E winds around 10 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 4 seconds and E 2 ft at 9 seconds. A chance of rain.

WED NIGHT
S winds around 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.

ANZ251-280000
Massachusetts Bay and Ipswich Bay
705 AM EDT Sat Apr 27 2024

TODAY
SW winds 5 to 10 kt, becoming SE this afternoon. Seas around 2 ft. Wave Detail: S 1 ft at 3 seconds and E 1 ft at 3 seconds.

TONIGHT
S winds 5 to 10 kt, becoming SW after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 3 seconds and E 2 ft at 10 seconds.

SUN
S winds around 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 3 seconds and E 2 ft at 9 seconds.

SUN NIGHT
SW winds 10 to 15 kt, becoming W after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 3 seconds and E 2 ft at 10 seconds.

MON
N winds around 10 kt, becoming E in the afternoon. Seas around 2 ft. Wave Detail: N 2 ft at 3 seconds and E 2 ft at 9 seconds.

MON NIGHT
S winds 5 to 10 kt, becoming N after midnight. Seas around 2 ft. Wave Detail: E 2 ft at 11 seconds and NE 1 ft at 3 seconds.

TUE THROUGH WED
E winds around 10 kt. Seas around 2 ft. A chance of rain.

WED NIGHT
S 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.

ANZ231-280000
Cape Cod Bay
705 AM EDT Sat Apr 27 2024

TODAY
W winds 5 to 10 kt, becoming S this afternoon. Seas 1 foot or less. Wave Detail: N 1 ft at 3 seconds and SE 1 ft at 7 seconds.

TONIGHT
SW winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: E 1 ft at 2 seconds and S 1 ft at 3 seconds.

SUN
SW winds around 10 kt. Seas 1 foot or less, then around 2 ft in the afternoon. Wave Detail: E 1 ft at 2 seconds and SW 1 ft at 3 seconds.

SUN NIGHT
SW winds 5 to 10 kt. Seas around 2 ft in the evening, then 1 foot or less. Wave Detail: SW 1 ft at 3 seconds and E 1 ft at 10 seconds.

MON AND MON NIGHT
N winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 10 seconds and N 1 ft at 3 seconds.

TUE THROUGH WED
NE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 10 seconds and NE 1 ft at 3 seconds. A chance of rain.

WED NIGHT
E 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.

ANZ254-280000
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm
705 AM EDT Sat Apr 27 2024

TODAY
W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 8 seconds and N 1 ft at 3 seconds.

TONIGHT
SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at 8 seconds and N 1 ft at 3 seconds.

SUN
SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and E 2 ft at 10 seconds.

SUN NIGHT
SW winds 10 to 15 kt, becoming W 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and E 2 ft at 10 seconds.

MON AND MON NIGHT
N winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 10 seconds and N 2 ft at 3 seconds.

TUE
E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 9 seconds and NE 2 ft at 4 seconds.

TUE NIGHT AND WED
SE winds around 10 kt, becoming NE with gusts up to 20 kt. Seas around 3 ft. A chance of rain.

WED NIGHT
NE winds around 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.

ANZ255-280000
Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket
705 AM EDT Sat Apr 27 2024

TODAY
W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and W 1 ft at 2 seconds.

TONIGHT
W winds around 10 kt. Seas 2 to 3 ft. Wave Detail: W 2 ft at 3 seconds and E 2 ft at 8 seconds.

SUN
SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and E 2 ft at 9 seconds.

SUN NIGHT
SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and E 2 ft at 9 seconds.

MON AND MON NIGHT
N winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 5 seconds and E 2 ft at 9 seconds.

TUE
E winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at 3 seconds and SW 2 ft at 6 seconds.

TUE NIGHT
SE winds 10 to 15 kt. Seas 2 to 3 ft. A chance of rain.

WED AND WED NIGHT
NE winds 10 to 15 kt. 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.

ANZ256-280000
Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island
705 AM EDT Sat Apr 27 2024

TODAY
W winds around 5 kt, becoming SW 10 to 15 kt this afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 2 ft at 8 seconds.

TONIGHT
SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and SE 2 ft at 7 seconds.

SUN
SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 8 seconds.

SUN NIGHT
SW winds 10 to 15 kt, becoming W 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and E 2 ft at 9 seconds.

MON
NW winds around 10 kt, becoming NE in the afternoon. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 5 seconds and E 2 ft at 9 seconds.

MON NIGHT
SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 5 seconds and E 2 ft at 9 seconds.

TUE
E winds 10 to 15 kt. Seas around 2 ft.

TUE NIGHT
E winds 10 to 15 kt. Seas 2 to 3 ft. A chance of rain.

WED AND WED NIGHT
NE winds 10 to 15 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.

ANZ232-280000
Nantucket Sound
705 AM EDT Sat Apr 27 2024

TODAY
W winds 5 to 10 kt. Seas 1 foot or less, then around 2 ft this afternoon. Wave Detail: NE 1 ft at 4 seconds and S 1 ft at 7 seconds, becoming N 1 ft at 3 seconds and SE 1 ft at 7 seconds.

TONIGHT
SW winds around 10 kt. Seas around 2 ft. Wave Detail: N 1 ft at 3 seconds and S 1 ft at 4 seconds.

SUN
SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and E 1 ft at 9 seconds.

SUN NIGHT
SW winds 10 to 15 kt, becoming W 5 to 10 kt after midnight. Seas around 2 ft in the evening, then 1 foot or less. Wave Detail: SW 2 ft at 4 seconds and E 1 ft at 10 seconds, becoming SW 1 ft at 4 seconds and E 1 ft at 10 seconds.

MON AND MON NIGHT
N winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: NW 1 ft at 3 seconds and S 1 ft at 4 seconds.

TUE
E winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: N 1 ft at 3 seconds and SW 1 ft at 6 seconds.

TUE NIGHT
SE winds 10 to 15 kt. Seas around 2 ft. A chance of rain.

WED AND WED NIGHT
NE winds 10 to 15 kt. Gusts up to 20 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.

ANZ233-280000
Vineyard Sound
705 AM EDT Sat Apr 27 2024

TODAY
W winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up to 20 kt this afternoon. Seas 1 foot or less, then around 2 ft this afternoon. Wave Detail: W 1 ft at 3 seconds and S 1 ft at 7 seconds, becoming SW 1 ft at 3 seconds and SE 1 ft at 7 seconds.

TONIGHT
SW winds 10 to 15 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 5 seconds and SE 1 ft at 8 seconds.

SUN
SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 5 seconds and SE 1 ft at 9 seconds.

SUN NIGHT
SW winds 10 to 15 kt, becoming W 5 to 10 kt after midnight. Seas around 2 ft in the evening, then 1 foot or less. Wave Detail: SW 2 ft at 4 seconds and SE 1 ft at 9 seconds, becoming SW 1 ft at 4 seconds and SE 1 ft at 9 seconds.

MON
NW winds 5 to 10 kt, becoming NE in the afternoon. Seas 1 foot or less. Wave Detail: W 1 ft at 4 seconds and E 1 ft at 9 seconds.

MON NIGHT
SE winds 5 to 10 kt, becoming NW after midnight. Seas 1 foot or less. Wave Detail: N 1 ft at 3 seconds and SW 1 ft at 5 seconds.

TUE AND TUE NIGHT
E winds 5 to 10 kt. Seas 1 foot or less. A chance of rain.

WED AND WED NIGHT
NE winds 5 to 10 kt. Seas 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.

ANZ234-280000
Buzzards Bay
705 AM EDT Sat Apr 27 2024

TODAY
SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt this afternoon. Seas 1 foot or less, then around 2 ft this afternoon. Wave Detail: SW 1 ft at 3 seconds and NE 1 ft at 3 seconds, becoming SW 1 ft at 3 seconds and SE 1 ft at 7 seconds.

TONIGHT
SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas around 2 ft in the evening, then 1 foot or less. Wave Detail: SW 2 ft at 4 seconds and SE 1 ft at 8 seconds, becoming SW 1 ft at 4 seconds and SE 1 ft at 8 seconds.

SUN
SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 ft at 9 seconds.

MON
N winds 5 to 10 kt, becoming NE in the afternoon. Seas 1 foot or less. Wave Detail: N 1 ft at 3 seconds and SW 1 ft at 4 seconds.

MON NIGHT
SE winds 5 to 10 kt, becoming NW after midnight. Seas 1 foot or less. Wave Detail: N 1 ft at 3 seconds and SW 1 ft at 5 seconds.

TUE AND TUE NIGHT
E winds 5 to 10 kt. Seas 1 foot or less. A chance of rain.

WED AND WED NIGHT
NE winds 5 to 10 kt. Seas 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.

ANZ235-280000
Rhode Island Sound
705 AM EDT Sat Apr 27 2024

TODAY
SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt this afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and S 2 ft at 7 seconds.

TONIGHT
SW winds 10 to 15 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 ft at 8 seconds.

SUN
SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 8 seconds.

SUN NIGHT
W winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 9 seconds.

MON
NW winds around 10 kt, becoming E in the afternoon. Seas around 2 ft. Wave Detail: S 2 ft at 5 seconds and NE 1 ft at 2 seconds.

MON NIGHT
SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 5 seconds and E 1 ft at 3 seconds.

TUE AND TUE NIGHT
E winds 5 to 10 kt. Seas around 2 ft. A chance of rain.

WED AND WED NIGHT
NE 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.

ANZ237-280000
Block Island Sound
705 AM EDT Sat Apr 27 2024

TODAY
SW winds 5 to 10 kt, increasing to 10 to 15 kt this afternoon. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and SW 1 ft at 2 seconds.

TONIGHT
SW winds 10 to 15 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 ft at 7 seconds. A chance of showers after midnight.

SUN
SW winds 10 to 15 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 8 seconds.

SUN NIGHT
SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 9 seconds.

MON AND MON NIGHT
E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 5 seconds and SE 2 ft at 9 seconds.

TUE AND TUE NIGHT
E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 3 seconds and S 2 ft at 6 seconds. A chance of rain.

WED AND WED NIGHT
NE 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.

ANZ230-280000
Boston Harbor
705 AM EDT Sat Apr 27 2024

TODAY
SW winds 5 to 10 kt, becoming SE this afternoon. Waves 1 foot or less.

TONIGHT
S winds around 10 kt, becoming SW after midnight. Waves 1 foot or less.

SUN
SW winds 5 to 10 kt. Waves 1 foot or less.

SUN NIGHT
SW winds 10 to 15 kt, becoming W after midnight. Waves 1 foot or less.

MON
N winds 10 to 15 kt, becoming E in the afternoon. Waves around 2 ft in the morning, then 1 foot or less.

MON NIGHT
SE winds 5 to 10 kt, becoming NE after midnight. Waves 1 foot or less. A chance of rain after midnight.

TUE THROUGH WED
E winds 5 to 10 kt. Waves 1 foot or less. A chance of rain.

WED NIGHT
S 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.

ANZ236-280000
Narragansett Bay
705 AM EDT Sat Apr 27 2024

TODAY
SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt this afternoon. Waves 1 foot or less, then around 2 ft this afternoon.

TONIGHT
SW winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Waves around 2 ft.

SUN
SW winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Waves around 2 ft.

SUN NIGHT
SW winds 5 to 10 kt, becoming W after midnight. Waves around 2 ft.

MON
NW winds 5 to 10 kt, becoming NE in the afternoon. Waves 1 foot or less.

MON NIGHT
SE winds 5 to 10 kt. Waves around 2 ft.

TUE AND TUE NIGHT
E winds 5 to 10 kt. Waves 1 foot or less, then around 2 ft. A chance of rain.

WED AND WED NIGHT
E 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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