The death toll from the tornadoes that hit the southern United States this week has risen to at least 340, in one of the worst series of twisters in the country's history.
Soldiers and emergency teams are still searching for bodies and survivors.
More than 200 tornadoes were reported across six southern US states on Tuesday and Wednesday.
The BBC reports at least 246 people died in Alabama and as many as a million homes and businesses in the state are still without power.
Alabama Governor Robert Bentley says he expected more bodies to be found in the coming days.
Tornadoes and storms have also caused deaths in Tennessee, Mississippi, Kentucky, Louisiana, Georgia and Virginia.
A state of emergency remains in place in those states.
President visits ravaged states
President Barack Obama has joined shocked Americans sifting through wreckage from the tornadoes.
Visiting the badly damaged city of Tuscaloosa, a city of about 90,000 people, the president said he had never seen devastation like it and promised locals they would not be forgotten.
Entire blocks were obliterated in the city where President Obama and First Lady Michelle Obama met with Alabama Governor Robert Bentley, and shook hands with distraught residents.
In a bid to maintain order, Tuscaloosa Mayor Walter Maddox ordered a curfew, lasting from dusk until 8am, for the second night.
Outside Tuscaloosa, Mr Obama visited the tornado-battered Holt primary school, which is being used as a distribution centre for aid supplies.
He spoke to the school principal, aid workers and storm survivors.
