If we are not going to get blocking then I would prefer cold zonalality infact some of the best snowfall in December have being throught these cold shots . December 16th 2011 was great here heavy snow all day about 2-3 inches fell . Then there's the famous white Christmas of 2004 when all of a sudden we had a Polar nw wind through the cheshire gap that brought the only white Christmas since I was born. In my opinion these are better charts than the dross that was showing last week atleast with this pattern there can be a few surprises thrown in.