The ice maps for the NAM are assuming everything freezes on contact. That’s simply not going to happen with temps 30-32. Freezing rain as we all know is self limiting anyway. I’m not an ice fan at all, but if for some reason you like no power for two weeks, you would want the surface temps to be on the order of 26-27. In Dec 2002 I measured 0.75 on the tree branches in MBY. We managed to stay 26-28 degrees the entire event.