Article Photos: UPDATED Video: Blake Shelton and Miranda Lambert to perform "Over You" in honor of Oklahoma on "The Voice" tonight; Swon Brothers contending on tonight's show 411/519

Residents of Edmond, Okla., survey storm damage from a tornado that hit their neighborhood Sunday, May 19, 2013. Forecasters had warned that the middle of the country would see severe weather throughout the weekend. (AP Photo/Sean Murphy)