A new map from Reddit user Alexandr Trubetskoy (a.k.a. atrubetskoy) is sure to stoke this regional competition. Using data “taken from hundreds of various points from user responses…interpolated using NOAA’s average annual snowfall days map,” Trubetskoy made a map showing how much snow it typically takes to close schools in the U.S. and Canada. Notice that for much of the southern U.S., all it takes is “any snow” to shut schools down. For the Upper Midwest and Canada, two feet of snow are required for a closure.