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National Weather Service Marine Forecast FZUS51 KBOX

FZUS51 KBOX 260307
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
1007 PM EST Wed Feb 25 2026

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

ANZ200-261600
1007 PM EST Wed Feb 25 2026

Synopsis for Massachusetts and Rhode Island coastal waters

A weak front will cross the New Eng late tonight followed low pres tracking S of the waters late Thu into Thu night. High pres builds over the water Fri, moving offshore Fri night. Weak high pres follows on Sat, then a stronger cold front will move S across the region Sat night into early Sun. Strong high pres will build to the N later Sun into Mon.

ANZ250-261600
Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary
1007 PM EST Wed Feb 25 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING

OVERNIGHT
SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 5 seconds and SE 1 foot at 10 seconds. Scattered showers.

THU
W winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: W 3 ft at 4 seconds and SE 2 ft at 10 seconds.

THU NIGHT
NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: W 2 ft at 4 seconds and SE 2 ft at 10 seconds.

FRI
NW winds 5 to 10 kt, becoming SW in the afternoon. Seas 2 to 3 ft. Wave Detail: N 2 ft at 4 seconds and SE 2 ft at 9 seconds.

FRI NIGHT AND SAT
S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and SE 2 ft at 9 seconds.

SAT NIGHT
W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and SE 2 ft at 8 seconds.

SUN
NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. A chance of snow.

SUN NIGHT
NW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. A chance of light freezing spray.

MON
N winds 15 to 20 kt. Seas 3 to 5 ft. A chance of light freezing spray.

MON NIGHT
N winds 10 to 15 kt. Seas 3 to 4 ft. A chance of snow.

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.

ANZ251-261600
Massachusetts Bay and Ipswich Bay
1007 PM EST Wed Feb 25 2026

OVERNIGHT
SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and E 1 foot at 11 seconds. Scattered showers.

THU
W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: W 2 ft at 3 seconds and SE 1 foot at 4 seconds.

THU NIGHT
NW winds 5 to 10 kt. Gusts up to 20 kt after midnight. Seas around 2 ft. Wave Detail: NW 1 foot at 3 seconds and SE 1 foot at 11 seconds.

FRI
NW winds 5 to 10 kt, becoming SW in the afternoon. Seas around 2 ft. Wave Detail: N 1 foot at 3 seconds and SE 1 foot at 10 seconds.

FRI NIGHT AND SAT
S winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 4 seconds and SE 1 foot at 9 seconds.

SAT NIGHT
W winds 10 to 15 kt. Seas around 2 ft. Wave Detail: W 2 ft at 3 seconds and SE 1 foot at 4 seconds.

SUN
NW winds 15 to 20 kt. Seas 2 to 3 ft. A chance of snow.

SUN NIGHT
NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. A chance of light freezing spray.

MON
N winds 15 to 20 kt. Seas 2 to 3 ft. A chance of light freezing spray.

MON NIGHT
N winds 10 to 15 kt. Seas 2 to 4 ft. A chance of snow.

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.

ANZ231-261600
Cape Cod Bay
1007 PM EST Wed Feb 25 2026

OVERNIGHT
SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: S 1 foot at 4 seconds and SE 1 foot at 10 seconds. A slight chance of rain and snow showers.

THU
W 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. Wave Detail: S 2 ft at 10 seconds and W 1 foot at 3 seconds.

THU NIGHT
NW winds 5 to 10 kt. Gusts up to 20 kt after midnight. Seas around 2 ft. Wave Detail: S 2 ft at 10 seconds and W 1 foot at 3 seconds.

FRI
NW winds 5 to 10 kt, becoming SW in the afternoon. Seas around 2 ft in the morning, then 1 foot or less. Wave Detail: N 1 foot at 4 seconds and S 1 foot at 9 seconds, becoming N 1 foot at 4 seconds and S 1 foot at 10 seconds.

FRI NIGHT AND SAT
S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 9 seconds and SW 1 foot at 3 seconds.

SAT NIGHT
W winds 5 to 10 kt, becoming NW after midnight. Seas 1 foot or less, then around 2 ft after midnight. Wave Detail: SW 1 foot at 2 seconds and SE 1 foot at 4 seconds, becoming NW 1 foot at 3 seconds and SE 1 foot at 7 seconds.

SUN
NW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. A chance of snow.

SUN NIGHT
NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. A chance of light freezing spray.

MON AND MON NIGHT
N winds 10 to 15 kt. Gusts up to 20 kt. Seas 2 to 3 ft. A chance of snow.

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.

ANZ254-261600
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm
1007 PM EST Wed Feb 25 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THURSDAY NIGHT

OVERNIGHT
SW winds around 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: S 5 ft at 9 seconds and W 2 ft at 5 seconds. A slight chance of showers.

THU
W winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: S 4 ft at 10 seconds and W 2 ft at 4 seconds.

THU NIGHT
NW winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 3 to 5 ft. Wave Detail: S 4 ft at 10 seconds and NW 2 ft at 4 seconds.

FRI
NW winds 5 to 10 kt, becoming SW in the afternoon. Seas 2 to 4 ft. Wave Detail: S 4 ft at 9 seconds and N 2 ft at 4 seconds.

FRI NIGHT AND SAT
S winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: S 4 ft at 9 seconds and N 2 ft at 5 seconds.

SAT NIGHT
W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and W 1 foot at 3 seconds.

SUN
NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft.

SUN NIGHT
N winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. A chance of light freezing spray.

MON
N winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of light freezing spray.

MON NIGHT
NE winds 10 to 15 kt. Seas 3 to 5 ft. A chance of snow.

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.

ANZ255-261600
Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket
1007 PM EST Wed Feb 25 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THURSDAY NIGHT

OVERNIGHT
SW winds around 15 kt with gusts up to 25 kt. Seas 5 to 8 ft. Wave Detail: SW 6 ft at 8 seconds and W 1 foot at 4 seconds. A slight chance of showers.

THU
W winds 10 to 15 kt. Gusts up to 25 kt in the morning. Seas 5 to 7 ft. Wave Detail: SW 6 ft at 9 seconds and W 1 foot at 3 seconds.

THU NIGHT
W winds around 10 kt, becoming NW after midnight. Seas 3 to 5 ft. Wave Detail: S 5 ft at 9 seconds.

FRI
NW winds 5 to 10 kt, becoming SW in the afternoon. Seas 3 to 5 ft. Wave Detail: S 5 ft at 9 seconds and N 1 foot at 4 seconds.

FRI NIGHT
S winds 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: S 5 ft at 9 seconds and N 1 foot at 4 seconds.

SAT AND SAT NIGHT
NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 8 seconds and E 1 foot at 4 seconds.

SUN
NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft.

SUN NIGHT
N winds 20 to 25 kt. Seas 3 to 4 ft. A chance of light freezing spray.

MON AND MON NIGHT
NE winds 15 to 20 kt, diminishing to 10 to 15 kt. Seas 3 to 5 ft. A chance of light freezing spray. A chance of snow.

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.

ANZ256-261600
Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island
1007 PM EST Wed Feb 25 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THURSDAY NIGHT

OVERNIGHT
SW winds around 15 kt with gusts up to 25 kt. Seas 6 to 8 ft. Wave Detail: SW 7 ft at 8 seconds. A slight chance of showers.

THU
W winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas 5 to 7 ft. Wave Detail: SW 6 ft at 9 seconds.

THU NIGHT
W winds around 10 kt, becoming N after midnight. Seas 4 to 6 ft. Wave Detail: S 5 ft at 9 seconds and NW 1 foot at 3 seconds.

FRI
N winds 5 to 10 kt, becoming SW in the afternoon. Seas 3 to 5 ft. Wave Detail: S 5 ft at 9 seconds and NW 1 foot at 3 seconds.

FRI NIGHT
S winds 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: S 5 ft at 9 seconds.

SAT AND SAT NIGHT
NW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 8 seconds and NW 2 ft at 3 seconds.

SUN
NW winds 10 to 15 kt with gusts up to 20 kt. Seas around 3 ft.

SUN NIGHT
N winds 20 to 25 kt. Seas 3 to 4 ft. A chance of light freezing spray.

MON AND MON NIGHT
NE winds 15 to 20 kt, diminishing to 10 to 15 kt. Seas 3 to 5 ft. A chance of light freezing spray. A chance of snow.

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.

ANZ232-261600
Nantucket Sound
1007 PM EST Wed Feb 25 2026

OVERNIGHT
SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 2 ft at 3 seconds and S 2 ft at 9 seconds. A slight chance of showers.

THU
W winds 5 to 10 kt. Gusts up to 20 kt in the morning. Seas 2 to 4 ft. Wave Detail: S 2 ft at 9 seconds and W 1 foot at 3 seconds.

THU NIGHT
W winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 3 ft. Wave Detail: S 2 ft at 9 seconds and W 1 foot at 3 seconds.

FRI
NW winds 5 to 10 kt, becoming SW in the afternoon. Seas 2 to 3 ft. Wave Detail: S 2 ft at 9 seconds and N 1 foot at 4 seconds.

FRI NIGHT AND SAT
S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 9 seconds and SW 1 foot at 2 seconds.

SAT NIGHT
W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 1 foot at 3 seconds and E 1 foot at 4 seconds.

SUN
NW winds 10 to 15 kt. Seas around 2 ft.

SUN NIGHT
N winds 15 to 20 kt. Seas 2 to 3 ft. A chance of light freezing spray.

MON AND MON NIGHT
NE winds 10 to 15 kt. Gusts up to 20 kt. Seas 2 to 3 ft. A chance of snow.

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.

ANZ233-261600
Vineyard Sound
1007 PM EST Wed Feb 25 2026

OVERNIGHT
SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Wave Detail: SW 4 ft at 8 seconds and SW 1 foot at 4 seconds. A slight chance of showers.

THU
W winds 5 to 10 kt. Gusts up to 20 kt in the morning. Seas 3 to 5 ft. Wave Detail: SW 4 ft at 9 seconds and W 1 foot at 4 seconds.

THU NIGHT
W winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 4 ft. Wave Detail: S 3 ft at 9 seconds and W 1 foot at 4 seconds.

FRI
NW winds 5 to 10 kt, becoming SW in the afternoon. Seas 2 to 3 ft. Wave Detail: S 3 ft at 9 seconds and NW 1 foot at 3 seconds.

FRI NIGHT AND SAT
SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 9 seconds and SW 1 foot at 2 seconds.

SAT NIGHT
W winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. Wave Detail: S 2 ft at 8 seconds and SW 1 foot at 3 seconds.

SUN
NW winds 10 to 15 kt. Seas around 2 ft.

SUN NIGHT
N winds 15 to 20 kt. Seas 2 to 3 ft. A chance of light freezing spray.

MON AND MON NIGHT
NE winds 15 to 20 kt, diminishing to 10 to 15 kt. Seas around 2 ft. A chance of snow.

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.

ANZ234-261600
Buzzards Bay
1007 PM EST Wed Feb 25 2026

OVERNIGHT
SW winds around 10 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 8 seconds and SW 2 ft at 4 seconds. A slight chance of showers. A slight chance of snow showers.

THU
W winds 5 to 10 kt. Gusts up to 20 kt in the morning. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 8 seconds and W 1 foot at 4 seconds.

THU NIGHT
W winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 9 seconds and W 1 foot at 4 seconds.

FRI
NW winds around 5 kt, becoming SW in the afternoon. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 9 seconds and N 1 foot at 3 seconds.

FRI NIGHT AND SAT
SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 9 seconds and SW 1 foot at 3 seconds.

SAT NIGHT
W winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. Wave Detail: SW 1 foot at 3 seconds and SE 1 foot at 4 seconds.

SUN
NW winds 10 to 15 kt. Seas around 2 ft. A chance of snow.

SUN NIGHT
N winds 15 to 20 kt. Seas around 2 ft.

MON AND MON NIGHT
N winds 10 to 15 kt. Seas around 2 ft. A chance of snow.

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.

ANZ235-261600
Rhode Island Sound
1007 PM EST Wed Feb 25 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING

OVERNIGHT
SW winds 10 to 15 kt with gusts up to 25 kt. Seas 5 to 7 ft. Wave Detail: S 6 ft at 8 seconds and SW 1 foot at 4 seconds. A slight chance of showers.

THU
W winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 4 to 6 ft. Wave Detail: S 5 ft at 8 seconds and W 1 foot at 4 seconds.

THU NIGHT
W winds 5 to 10 kt, becoming N after midnight. Seas 3 to 5 ft. Wave Detail: S 5 ft at 9 seconds and NW 1 foot at 3 seconds.

FRI
N winds 5 to 10 kt, becoming SW in the afternoon. Seas 3 to 4 ft. Wave Detail: S 4 ft at 9 seconds and NW 1 foot at 3 seconds.

FRI NIGHT AND SAT
SW winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: S 4 ft at 9 seconds.

SAT NIGHT
NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and W 1 foot at 2 seconds.

SUN
NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft.

SUN NIGHT
N winds 15 to 20 kt. Seas 2 to 3 ft. A chance of light freezing spray.

MON
NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of light freezing spray. A chance of snow.

MON NIGHT
NE winds 10 to 15 kt. Seas 2 to 3 ft. A chance of snow.

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.

ANZ237-261600
Block Island Sound
1007 PM EST Wed Feb 25 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING

OVERNIGHT
SW winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: S 5 ft at 8 seconds and SW 1 foot at 3 seconds. A slight chance of showers.

THU
W winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas 3 to 5 ft. Wave Detail: S 4 ft at 8 seconds and W 1 foot at 3 seconds.

THU NIGHT
W winds 5 to 10 kt, becoming N after midnight. Seas 2 to 4 ft. Wave Detail: S 4 ft at 9 seconds.

FRI
N winds 5 to 10 kt, becoming S in the afternoon. Seas 2 to 4 ft. Wave Detail: S 4 ft at 9 seconds.

FRI NIGHT
S winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: S 4 ft at 9 seconds.

SAT AND SAT NIGHT
NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 8 seconds and NW 1 foot at 3 seconds.

SUN
NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft.

SUN NIGHT
N winds around 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of light freezing spray.

MON AND MON NIGHT
NE winds 10 to 15 kt. Gusts up to 20 kt. Seas 2 to 3 ft. A chance of snow.

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.

ANZ230-261600
Boston Harbor
1007 PM EST Wed Feb 25 2026

OVERNIGHT
SW winds around 10 kt with gusts up to 20 kt. Waves around 2 ft. Scattered showers. Scattered snow showers.

THU
W winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon. Gusts up to 20 kt. Waves around 2 ft.

THU NIGHT
NW winds 5 to 10 kt. Waves 1 foot or less.

FRI
W winds around 5 kt, becoming SW in the afternoon. Waves 1 foot or less.

FRI NIGHT AND SAT
SW winds 10 to 15 kt. Waves around 2 ft.

SAT NIGHT
W winds 10 to 15 kt. Waves 1 foot or less, then around 2 ft after midnight.

SUN
NW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. A chance of snow.

SUN NIGHT AND MON
NW winds 15 to 20 kt, becoming N 10 to 15 kt. Waves around 2 ft.

MON NIGHT
N winds 10 to 15 kt. Waves 1 foot or less. A chance of snow.

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.

ANZ236-261600
Narragansett Bay
1007 PM EST Wed Feb 25 2026

OVERNIGHT
SW winds 5 to 10 kt with gusts up to 20 kt. Waves 2 to 4 ft. A slight chance of showers.

THU
W winds 5 to 10 kt. Waves 2 to 3 ft.

THU NIGHT
NW winds 5 to 10 kt. Waves 2 to 3 ft.

FRI
NW winds around 5 kt, becoming SW in the afternoon. Waves 2 to 3 ft.

FRI NIGHT AND SAT
SW winds 5 to 10 kt. Waves 2 to 3 ft.

SAT NIGHT
NW winds 5 to 10 kt. Waves around 2 ft.

SUN
NW winds 10 to 15 kt. Waves around 2 ft. A chance of snow.

SUN NIGHT
N winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft.

MON AND MON NIGHT
N winds 10 to 15 kt, diminishing to 5 to 10 kt. Waves around 2 ft. A chance of snow.

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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