We do need to watch the position of the 850 mb low on the Euro AI. These screenshots are from 12z and 18z. It’s getting further north and that will act to promote mid level warming.
18z Euro has a front end thump of 7-10” for coastal areas before going to a lighter wintry mix. Inland areas get 10-15”+. The main feature is SLP that is tucked into the Delmarva and southern NJ coast. This is still a significant storm for the area.
Your comment is not correct. These photos were taken on January 14th, 1978 at East Northport on Long Island. Heavy rain fell most of the night with below freezing temperatures resulting in this severe ice storm.
These are today’s ensemble outputs along with the Euro AI output. I do not ever recall seeing the widespread 6”+ amounts over virtually all of the NE part of the country on these models.