As I perused through NCDC data, NC State data and Webber weather data, I noticed a lot.
1. We used to get a lot more small events per year. 2 to 4 inch snow/mix storms happened 2 to 4 times per year most winters.
2. Its now feast or famine. Really since 2010, its either been big snowstorm or nothing. Very few 2 to 4 inch type storms in the past 15 years.
3. There is no true set of conditions that will lead to snow for us. MJO, NAO, PNA, QBO, AO? Of course if all of these are optimal that helps but some of our best storms have occurred in the "bad" phases of each.
In my amateur opinion, something isn't right with the atmosphere in relation to snow across most of our area.
Is it because of the solar max?
Is it because of the warmer oceans?
Is it because of the crazy Active Pacific?
Arctic Sea ice?
Global warming? Too many cows farting in the Midwest?
I'm not completely sure but I do know it takes absolute perfect conditions for it to snow here now.