January 30, 2014
Map: 'How Much Snow It Typically Takes to Cancel School in the U.S.'
Map: 'How Much Snow It Typically Takes to Cancel School in the U.S.'
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.
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