The tornado destroyed much of Greenfield, a town of about 2,000 around 55 miles (88.5 kilometers) southwest of Des Moines, during a day that saw multiple tornadoes, giant hail and heavy rain in several states. Dinkla said there were at least a dozen injuries amid widespread devastation in Greenfield, including at the community’s small hospital. Patients there had to be transferred to other facilities in nearby cities.