I think it's still a bit too early to narrow down how far north the meaningful sleet line makes it but I think it'll be somewhere in a range from about 30 miles south or north of I80/NYC. Ideally we'd want to probably see it south of NYC today expecting the last second north bump with middle level warming.
12Z NAM looked way better for NYC, RGEM slightly worse, expect some wobbling, going to be close in terms of mainly snow vs several hours of sleet but I think we are narrowing the borderline area to 30 miles north and south of the I80 corridor.