A powerful storm system stretching from Texas to Minnesota brought flash flood warnings early Sunday after kicking up at least 19 damaging tornadoes overnight and pounding the region with baseball-sized hail.
Thousands of customers were without power but there were no immediate reports of any deaths or injuries.
Forecasters said the system was continuing its march eastward as radar showed storms across Iowa, Missouri and a large area of Texas.
Severe storms were likely Sunday for the Upper Midwest and mid-Mississippi Valley, including the possibility of isolated tornadoes. Flash flood warnings were also in effect in many areas, including north Texas, NBC DFW reported.