What happened with this weekend's system is notable, in that it did make significant steps colder. Keep in mind the significant shifts that have taken place within 3 days. Doesn't mean this one will turn out moving towards wintry, but an apps runner isn't set in stone, and even if it is impacts before flipping to rain could be significant. I've experienced all frozen storms with a low tracking to my west before (this was in virginia, so a little easier, but still...)