Report: Tornado Touches Down In Waterloo, Clean-up Underway Get our free mobile app Clean-up is underway in Waterloo, Waverly and other parts of northeast Iowa following a night of severe weather, which spawned at least 12 confirmed tornadoes. Officials with the National Weather Service said they were sending out survey teams to the hardest hit areas on Thursday. One crew was being sent to Bremer and Butler counties, and another was going to Calhoun and Hamilton counties in western Iowa. Some of the most significant damage was reported near Shell Rock, Waverly, Oelwein and Manchester. Tornadoes were sighted near each of those cities. The twisters either destroyed or damaged property, uprooted trees and downed power lines. No injuries were reported.