 Some locations that will experience flash flooding include Iowa City, Sigourney, Coralville, Kelowna, Wellman, Lone Tree, University Heights, North English, Riverside, Hills, Keswick, South English, Parnell, Millersburg, Harper, Kinross, Richmond, Keota, Webster, and Holbrook. This includes Interstate 80 in Iowa between mile markers 242 and 247. Turn around. Don't drown when encountering flooded roads.