The National Weather Service on Tuesday afternoon and evening issued multiple tornado warnings in parts of Iowa and Nebraska as local TV news meteorologists showed photos of large hail and spoke of very heavy rain.

Earlier on Tuesday, floodwaters breached levees in Iowa, creating dangerous conditions that prompted evacuations.

A vast swath of lands from eastern Nebraska and South Dakota to Iowa and Minnesota has been under siege from flooding from torrential rains since last week, while also being hit with a scorching heat wave. Up to 18 inches of rain have fallen in some areas, and some rivers rose to record levels. Hundreds of people were rescued, homes were damaged and at least two people died after driving in flooded areas.