Widespread storms are expected to sweep through a region stretching from Texas to Michigan on Sunday. Some of the most severe weather is expected in the Ohio and Tennessee River Valleys, where forecasters said the conditions are right for “very large hail, damaging winds and strong tornadoes.”

Sunday will likely be the most active day for severe storms this weekend, as the threat area stretches across much of the Mississippi, Ohio and Tennessee Valleys, Tonks said. Over a dozen states may be at risk of severe weather Sunday, AccuWeather predicted.