Tornadoes sweeping across the southern United States have killed at least 45 people and injured more than 100 others, weather officials and US media outlets have said.
Thunderstorms and more than 50 tornadoes cut through the region, flattening buildings and downing power lines in Arkansas, Kentucky, Mississippi and Tennessee.
Twenty-four people were killed in Tennessee, while 13 died in Arkansas and seven lost their lives in Kentucky, state officials said. CNN also reported one fatality in Alabama.
Hundreds of thousands of people were also left without power after cables were downed.
"It took the whole house," one woman in Tennessee told CNN news channel.
"I just got up and I thought it was a fire. We got up and there was no house left."
Tornado watches were in effect on Wednesday morning for parts of
Alabama, Tennessee, Georgia and the western Florida panhandle, the
National Weather Service said.
Assessing damage
In Tennessee, twisters knocked down a police radio tower, crushed the wall of a shopping centre and damaged a hangar at the airport in the largest city, Memphis.
"We're still trying to assess all the damage now that the sun is
coming up," Laura McPherson of the Tennessee Emergency Management Area told AFP news agency.
Several people sheltering under a bridge north of the shopping centre were washed into state's Wolf river, but were rescued, Steve Cole of the Memphis police department said.
The same storm then moved to Jackson, Mississippi, and damaged a dormitory at Union University, where eight students were temporarily trapped but escaped serious injury, school officials said.
At least six tornadoes occurred between Oxford, Mississippi, and Jackson, Tennessee, alone, Richard Okulski, from the National Weather Service in Memphis, said.