 Thunderstorms packed with heavy rain and tornadoes that swept through the Midwest are being blamed for the failure of a dam in southern Illinois. Officials say water overtopped a dam near Nashville, Illinois, a community southeast of St. Louis, where about 300 people were in the evacuation zone. First responders were sent to the area to make sure people got out safely, and so far no injuries have been reported, but numerous roads are closed due to flash flooding.