Tornado survivor: 'I'm just blessed. I'm glad to be alive'
Severe storms have passed through Oklahoma, Texas and Louisiana, killing at least seven people.
Fifth largest refinery in US catches fire in Louisiana
There were no reported injuries at the ExxonMobil refinery fire in Baton Rouge on Tuesday night.
Tornadoes leave buildings flattened in US south
A school in Louisiana was flattened after dozens of tornadoes tore through several US south-eastern states.