Tornadoes devastate U.S. Midwest

Millions of residents remained under severe weather alerts as the storm system moved toward the Great Lakes and Northeast.

In Olmsted County, Minnesota, sheriff's officials described 'multiple levels' of damage to rural infrastructure and residential buildings.

Emergency crews are currently working to clear debris from impassable roads and restore power to thousands of households.

Meteorologists warn that the risk of funnel clouds and high winds will persist throughout the weekend as a cold front collides with unseasonably warm air.