Block Island Sound Marine Forecast

FORECAST
DISCUSSION

The Marine Weather Forecast In Detail:

ANZ237 Forecast Issued: 104 AM EST Mon Jan 19 2026

Rest Of Tonight...Nw Winds 5 To 10 Kt. Seas 2 To 3 Ft. Wave Detail: S 3 Ft At 8 Seconds And W 1 Foot At 3 Seconds. Patchy Fog. Snow. Vsby 1 Nm Or Less.
Mon...W Winds 15 To 20 Kt, Increasing To 20 To 25 Kt With Gusts Up To 30 Kt In The Afternoon. Seas 3 To 5 Ft, Building To 5 To 7 Ft In The Afternoon. Wave Detail: S 4 Ft At 8 Seconds And W 2 Ft At 4 Seconds, Becoming W 4 Ft At 5 Seconds And S 4 Ft At 9 Seconds. Patchy Fog In The Morning With Vsby 1 To 3 Nm.
Mon Night...W Winds 25 To 30 Kt With Gusts Up To 40 Kt. Seas 5 To 7 Ft. Wave Detail: S 5 Ft At 9 Seconds And W 4 Ft At 5 Seconds. A Chance Of Light Freezing Spray After Midnight.
Tue...W Winds 20 To 25 Kt, Diminishing To 15 To 20 Kt In The Afternoon. Gusts Up To 35 Kt. Seas 4 To 6 Ft. Wave Detail: W 4 Ft At 5 Seconds And S 4 Ft At 9 Seconds. A Chance Of Light Freezing Spray In The Morning.
Tue Night...W Winds 15 To 20 Kt, Diminishing To 10 To 15 Kt After Midnight. Gusts Up To 25 Kt. Seas 3 To 5 Ft. Wave Detail: W 4 Ft At 5 Seconds And S 3 Ft At 9 Seconds.
Wed...W Winds 5 To 10 Kt, Becoming Sw 15 To 20 Kt In The Afternoon. Gusts Up To 25 Kt. Seas 2 To 3 Ft. Wave Detail: Sw 3 Ft At 4 Seconds And Se 1 Foot At 9 Seconds.
Wed Night...Sw Winds 20 To 25 Kt With Gusts Up To 30 Kt. Seas 4 To 6 Ft.
Thu Through Fri...W Winds 15 To 20 Kt With Gusts Up To 25 Kt. Seas 3 To 5 Ft.
Fri Night...W Winds 15 To 20 Kt With Gusts Up To 25 Kt. Seas 3 To 4 Ft. A Chance Of Light Freezing Spray. 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.

ANZ200 Synopsis Issued: 1005 AM EDT Tue Oct 15 2024

Synopsis For Massachusetts And Rhode Island Coastal Waters...
A Couple Of Weaker Fronts Push Across The Waters Through Thursday, Although No Significant Weather Is Expected. Gusty West To Northwest Winds Do Continue Through Wednesday Night. High Pressure Builds In From The West Late This Week And Will Stick Around Through The Upcoming Weekend.
...