(DES MOINES, Iowa) — A flurry of tornadoes swept through central Iowa Thursday afternoon, flattening buildings and damaging the courthouse in Marshalltown and hitting an agricultural machinery plant in Pella as people were working. Authorities said a hospital was evacuated and there were some injuries from the storms, but no reports of deaths. Hardest hit appeared to be Marshalltown , a city of 27,000 people about 50 miles (80 kilometers) northeast of Des Moines, where brick walls collapsed in the streets, roofs were blown off buildings and the cupola of the historic courthousetumbled 175 feet (53 meters) to the ground. UnityPoint Health hospital in Marshalltown was damaged, spokeswoman Amy Varcoe said. Varcoe said all 40 of its patients were being transferred to the health system’s hospitals in Waterloo and Grundy Center. The Marshalltown hospital’s emergency room remained open to treat patients injured in the storm, Varcoe said.