If you you look at the instances of significant snow events from April 10th and later, for the Long Island region, they aren’t nearly as abundant today as they were in the past.
Over the weekend I’ll try to dig up some documents I have for Long Island. “Significant snow”, or better yet what many may deem as “plowable” snow events, from April 10th and on, were more common for the Long Island region from centuries ago up to around 1870s or so. After the 1870s cases really drop off significantly. Many believe it to be due to the IR era.