New storms threaten additional flooding across the Midwest and Ohio Valley. Eastern Indiana experienced catastrophic rainfall, causing widespread damage and evacuations. Rivers are forecast to reach major flood stages, worsening existing conditions. Hundreds of thousands remain without power following a destructive derecho event. The region's punishing weather stretch is expected to continue with more storms.

Significant flash flooding is underway and more drenching downpours and powerful storms are incoming.

Flash flooding spread into eastern Tennessee late Tuesday, stranding vehicles and closing roads in western Knoxville, Lenoir City and part of Pigeon Forge, as rounds of storms…