In Boston, nearly 9 feet of snow this winter has kept shoppers out of stores, putting a strain on the local economy. bettlebrox/Flickr hide caption

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A driver clears his car windshield in Boston on Jan. 27, after a heavy storm hit the city. Pennsylvania could be the next state to pass legislation that would cite drivers that take to the road before removing the hazardous ice and snow. Robert Nickelsberg/Getty Images hide caption

itoggle caption Robert Nickelsberg/Getty Images

Buffalo Bills cornerback Stephon Gilmore prepares to take the bus, leaving Ralph Wilson Stadium to play a "home" game in Detroit. Tickets to the game, postponed to Monday, are free. Gary Wiepert/AP hide caption

itoggle caption Gary Wiepert/AP

Dark blue: It's going to take a foot or more of snow to close schools. Green: Any snow's going to shut things down. reddit.com/user/atrubetskoy hide caption

itoggle caption reddit.com/user/atrubetskoy