Pictures Spring Storms -- April 1 April 1, 2015 / 8:25 PM CDT / CBS News (credit: mjmueller) Lightning - April 1, 2015 Thunderstorms (credit: srhpuett) Lightning - April 1, 2015 Thunderstorms (credit: Chantelle Owens) Lightning - April 1, 2015 Thunderstorms (credit: Janine Heffelfinger) Lightning - April 1, 2015 Thunderstorms (credit: skipants) Lightning - April 1, 2015 Thunderstorms (credit: Roxanne) Lightning - April 1, 2015 Thunderstorms (credit: Alyssa L) Lightning - April 1, 2015 Thunderstorms (credit: pjpeters47) Lightning - April 1, 2015 Thunderstorms (credit: Nici Jordan) Lightning - April 1, 2015 Thunderstorms (credit: jimgri) Lightning - April 1, 2015 Thunderstorms (credit: Sean Floersch) Lightning - April 1, 2015 Thunderstorms (credit: Eddie Prew) Lightning - April 1, 2015 Thunderstorms (credit: Doug Berg) Lightning - April 1, 2015 Thunderstorms (credit: Jason DeRusha) Lightning - April 1, 2015 Thunderstorms (credit: Jason DeRusha) Lightning - April 1, 2015 Thunderstorms (credit: Cameron Anderson) Lightning - April 1, 2015 Thunderstorms (credit: Cameron Anderson/Forest Lake) Lightning - April 1, 2015 Thunderstorms (credit: Matt Larson)