Chances of Keeping the Snow Cover

This graphic illustrates the historical frequency of keeping a snow cover that is on the ground in mid-October. So, for each day, IF there was one or more inches of snow on the ground, how often did the snow cover remain one inch or more (until the following spring)? The inverse would be how often did the snow cover reduce to less than one inch before the following spring. The change is fairly dramatic over just a few days. So based on the historical frequency, there is a 57% change that the snow cover (1" this morning at the Airport) will remain. If we have an inch on the ground Friday morning, that increases to 73%.