Tornado that tore across Mississippi and Arkansas knocks an 18 wheeler on its side

Six dead in Christmas tornadoes: Terrifying video shows truck being wiped out by twister as freak holiday weather means Christmas Eve could be as warm as JULY Forecasters have warned of a 'particularly dangerous situation' as a storm system sweeps across America Tornado struck north west Mississippi, destroying at least 20 homes that fell in its path of destruction A tree blew over onto a house in Arkansas, killing an 18-year-old woman and trapping a one-year-old child inside A seven-year-old boy and two other people died as a result of the biblical weather in Mississippi on Wednesday Two more people died in Tennessee, with another two people still missing south west of Nashville Storms packing strong winds toppled tractor-trailers and power lines leaving thousands of people without electricity Freak weather comes as forecasters predict highs of 80F in some parts of the eastern U.S. on Christmas Eve