There were more confirmed twisters in Iowa, damaging hail fell in Illinois and grass fires blazed in Oklahoma, as the storm system threatened a broad swath of the country home to some 85 million people.
Unrelenting tornadoes that tore through parts of the South and Midwest shredded homes and shopping centers, and collapsed a theater roof during a heavy metal concert in Illinois.
At least one person was killed in the Little Rock area, and two killed in the northest Arkansas town of Wynne. A roof collapse during a concert in Belvedere, Illinois, killed one and injured dozens.