On your 'totals' map you see a small white dot in my county in western VA. This is Covington's CO-OP located at the filtration water plant, which keeps horrendous records and always has for past 40-50 years. It can snow and they report nothing, or half of what others get. I'll use your map as prove. Here are their numbers compared to other CO-OP's and CoCoRaHS reports in a 30 mile area. Theirs- 2/3-2/4 4.5", 2/6-2/7 4.5" total for month 11.2. Other sites with same dates 5.2/11.0/25.9, 4.7/11.2/30.2, 4.0/9.7/18.0, 6.0/11.1/22.8, 5.0/9.0/19.1. Now which of those are off? If you pull up ANY snow map for past 40-50 years there is a big hole in the middle of my county to accommodate this data. Some of the biggest snows in my area don't even get recorded into their records, Jan of 87 being a good example, snow total for the month a zero.