More storms possible as cold front moves through the US, with tornado watches remaining across the country’s Southeast.

Portions of West Virginia, Ohio and Pennsylvania were under a new tornado watch issued on Sunday by the National Weather Service, as the death toll from storms rose to at least 34 people in six states since Friday.

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.