Death toll could exceed 80 after at least 30 tornadoes swept through six states overnight in the central parts of the United States, including Arkansas, Mississippi, Illinois, Kentucky, Tennessee and Missouri.
A candle factory in Kentucky has been completely destroyed, local media reported on Saturday.
"There were about 110 people in it (candle factory) at the time that the tornado hit it," Kentucky Governor Andy Beshear said. "We believe our death toll from this event will exceed 50 Kentuckians and probably end up 70 to 100."
Beshear has declared a state of emergency in the area.
Tornadoes also hit a nursing home in Arkansas and took off the roof of an Amazon warehouse in Illinois, causing certain fatalities. Another nursing home and a fire station in Trumann of Tennessee also saw substantial damage.
It was the worst tornado that touched down in northeastern Arkansas and stayed on the ground for about 223 miles into Kentucky, and most likely the longest reported tornado in history, local media reported.
US President Joe Biden told reporters traveling with him in Wilmington, Delaware, Saturday he had been closely monitoring the situation and had called the governors of the states that had been severely impacted by one of the "largest tornado outbreaks in our history."
Biden told reporters he plans to travel to the region to survey storm damage when circumstances allow but didn't want to be in the way.
According to PowerOutage.US, at least 331,549 utility customers in four states were left without power.
Issuing tornado warning on Friday, the National Weather Service said at least 25 million people were under threat from massive thunderstorm systems.
来源：新华社 CNN 央视新闻