Oklahoma tornado scene like 'a warzone'
21 May 2013 Last updated at 12:19 BST
At least 24 people are confirmed dead, including seven children, and many are missing after a tornado tore through Oklahoma City, US officials say.
Worst hit was Moore, south of the city, where neighbourhoods were flattened and schools destroyed by winds of up to 200mph (320km/h).
Survivors and eyewitnesses have been describing their experiences of the events in Oklahoma.