Snow and arctic cold is expected to blast the Northeast US in the coming days. Icy conditions and accumulating snow will spread across the northeastern United States early this week as a potent snowstorm pushes through the region. The storm that brought snow to the Rockies and High Plains on Sunday will continue to sink south into the beginning of the week. This storm will bring some snow and Arctic cold to parts of the southern Plains. As the storm strengthens over the central and southern Plains on Monday, it will send snow from Missouri into the western Great Lakes. By the afternoon, snow is expected to spread into western New York. From northwestern Pennsylvania to southern Missouri, precipitation will likely start as rain, but as Arctic air is pulled south on the backside of the storm, rain is forecast to gradually changeover to snow across these areas Monday afternoon and evening.