prior to the last 5 years the largest late season snowfall was April 14, 1961 in Chicago. That has been surpassed twice in the last several years. Over my lifetime, I don't really recall any memorable late season events, though one did hit in early April perhaps 1972. It sure seems to me winters have carried much later into spring and late season snowfalls with the past several years. Of course, it's a blip in time. I'm old school, so no pie charts and graphs, just a memory. And when it comes to snow- a very good memory.