Seven other US states have been put on alert for tornados and severe thunderstorms.
Emergency services have been working to rescue people trapped or stranded due to the weather.
Rescue crews are looking for survivors in a shattered section of northern Illinois. A tornado killed one person and injured at least eleven others. One eyewitness said she’s never seen a twister so big that stayed on the ground so long. Adriana Diaz reports from Fairdale, Illinois, where there is almost nothing left.