The extreme weather in Arkansas and other parts of the South and Midwest has claimed four lives so far (Representational image)OAR/ERL/National Severe Storms Laboratory (NSSL)

Four people were killed and dozens injured Friday as a tornado outbreak caused havoc and impacted nearly 3 million people as they tore through several states of the South and Midwest.

The extreme weather overturned vehicles and destroyed homes, prompting search and rescue efforts.