The National Weather Service has issued tornado warnings for parts of Ohio as a storm system moving across most of the Midwest makes its way toward Columbus. The tornado warnings were focused on the southwestern part of the state.

Day after day of heavy rains have pounded the central U.S., rapidly swelling waterways and prompting a series of flash flood emergencies in from Texas to Ohio.

Friday’s tornado threat has increased and the risk for life-threatening flash flooding will continue into the weekend. Here’s where the dangerous weather will hit.