At least 34 people were killed in tornadoes in the south of America over the past three days.
The hardest of the six states hit were Arkansas and Mississippi, with over 27 storm related deaths accounted for and more than 200 people injured.
Deaths were also reported in Oklahoma and Iowa on Sunday, and Alabama and Tennessee on Monday.
A succession of powerful storms tearing across the southern states of America are now known to have killed at least 30 people.
The storms have wreaked havoc in heavily populated areas, with the states of Arkansas and Mississippi hardest hit.
ITV News Washington Correspondent Robert Moore reports.
At least 28 people are dead and tens of thousands without power after a storm system spawned a chain of tornadoes over three days across a large swath of the US, the Associated Press reported.
The storms flattened homes and businesses and forced frightened residents in more than half a dozen states to take cover.
Video footage captured a storm chaser shows the moment a tornado swept through the US city of Tupelo, Mississippi.
"It's getting really close", a woman can be heard saying before both she and fellow storm chaser Skip Talbot decide it is time to leave.
Video courtesy of Skip Talbot/KDR Media
"We've got to go right now", she adds before they pull away.
The death toll has risen to at least 26 following two days of severe weather and tornadoes in the US, the Associated Press reported.
A second day of deadly tornadoes has seen 21 people die across the southern and central US, including one person in Elvis Presley's birthplace in Mississippi.
The city of Tupelo, home to 35,000 people, suffered power outages and extensive damage to homes and businesses.
Eyewitnesses have described the destruction left behind by the tornadoes that swept the continental United States.
One said people were saying the storm had been half a mile wide, with another describing how he saw "some of the biggest trees just turned upside down".
ITV News' Martha Fairlie reports:
Aerial footage of Mayflower, Arkansas shows the extent of the damage caused by tornadoes that swept across the south-central United States on Sunday.
The death toll from the storm, which flipped cars and ripped houses off their foundations, currently stands at 17.
The death toll from a major storm front that moved its way across the continental United States has risen to 17.
Several tornadoes struck the south-central US on Sunday, wiping out entire neighborhoods, authorities said as rescue workers searched in darkness for survivors.
At least 12 people have been confirmed dead after a tornado ripped through the south-central United States on Sunday, according to officials
Rescue operations are underway after the tornado wiped out entire neighborhoods of homes, officials say.