Its such a marginal setup with temps and precip, you are setting yourself up for disappointment if you expect more than a coating- inch. Of course that can still change but it can also change on the dry side too.
I broke it down a bit further and researched winter storms since 2000 in December and this is what I could find for WNC-
In December 2000 there was a 1-3 inch snow for most of the foothills west of 77 and mountains
In December 2002 there was a nice CAD storm with 2-6 inches for most of the foothills and mountains
In December 2003 there were multiple small events/icing events
In December 2005 there were 2 icing events
In December 2009 there was the big snowstorm on December 19
In December 2010 there were a couple small events and the big Christmas snow
In December 2017 there was a big overrunning snow
In December 2018 there was a big snow
In December 2019 there was a light icing event
So thats 9 out of 25 winters with at least small events. There were 4 big snowstorms in that time frame. December has definitely been feast or famine but over the past 25 years it has produced 3 of the 5 biggest snowstorms for WNC.
Yeah we are in the least snowy 6 year period in recorded history. Only 1 winter storm warning criteria storm in that time frame. Only other time frame thats close is 97-02.
Thought this was interesting. Some mets think that Arctic air masses will modify even more this winter due to the Hudson Bay being almost ice free and having less ice than almost any other year ever