AwomanwalksdownastreetduringaspringsnowstormintheChicagosuburbofEvanston，Illinois，March23，2015.[Photo/Agencies] Apersonwalksalongthestreetpastsnow-coveredtressduringaspringsnowstorminChicago， Illinois， March 23， 2015. [Photo/Agencies] A woman walks under a canopy of snow-covered tress during a spring snow storm in Chicago， Illinois， March 23， 2015.[Photo/Agencies] A woman braces herself against the wind during a spring snow storm as she makes her way through downtown Chicago， Illinois， March 23， 2015. [Photo/Agencies] A man climbs a staircase during a spring snow storm in Chicago， Illinois， March 23， 2015.[Photo/Agencies]