Over the past 24 hours, more than 40 reported tornadoes have swept across eight states in the Midwest and South -- and the dangerous severe weather threat continues. The eight states with reported tornadoes in the past day are Alabama, Missouri, Arkansas, Mississippi, Louisiana, Illinois, Indiana and Tennessee.

Millions of Americans remain under severe weather warnings as a major storm continues moving across the Midwest and South. The system has produced more than 40 reported tornadoes in eight states over the past 24 hours and caused widespread damage.