BUFFALO, N.Y. (WWNY) - The National Weather Service has issued a winter storm warning for Jefferson and Lewis counties until Wednesday at 10 a.m.
A similar warning has been issued for Southeastern St. Lawrence County through 4 p.m. Wednesday.
The NWS says people in Jefferson and Lewis counties can expect heavy snow Tuesday afternoon into Wednesday morning with another 4 to 7 inches of accumulation possible.
The heaviest snow will occur through early Tuesday evening. Moderate snow is expected at times overnight.
Winds gusting as high as 40 miles per hour are forecast near the Lake Ontario shore.
In St. Lawrence County, another 5 to 10 inches of snow could fall before the storm tapers off Wednesday.
The NWS says widespread accumulating snow will create dangerous travel conditions.