Severe U.S. storm brings heavy snow, baseball-sized hail 23 Mar 2013 A major early spring storm brought heavy snow, severe thunderstorms and floods as it moved east across the United States on Saturday, closing highways and causing a pileup involving dozens of vehicles. Baseball-sized hail was reported in northern Florida, along with possible tornadoes, while heavy snow in Colorado and Kansas delayed flights and shut down part of Interstate-70. A crash involving up to 50 vehicles closed part of Interstate-25 near Loveland, Colorado, north of Denver.