Hi Joe,
I haven't even thought of doing snow maps, as we do not receive much snow down here on a regular basis. Our snows end up like the one we had over Christmas, with 450,000 without power, lots of tree/powerline damage, etc. Normally we get freezing rain, sleet, etc. here. For the record the snowstorm over Christmas is the second largest I have ever seen in Central AR. Back in the 80's, we had 12 inches or so in Little Rock. Nobody got out for a week in town. I may have to look at this and see.
John