1.47 inches of snow loss is probably right IF we have started to see a decline. I still contend that a lot is up in the air like storm intensity increase and general added moisture leading to higher snowfall per event, even if the number of storms potentially decrease.
Also the first 6 years of that horrible 30 year stretch averaged 15.85 inches, including one 2.8 inch snowfall year, which we are 4.58 inches ahead of the first 6 years of this decade.