US tornado aftermath

Oxford, Mississippi: People walk past the badly damaged Caterpillar plant Photograph: Bruce Newman/Oxford Eagle/AP

Oxford, Mississippi: A woman salvages items from her home Photograph: Bruce Newman/AP

Jackson, Mississippi: A student is taken to hospital after a tornado ripped through the campus Photograph: Andrew McMurtrie/The Jackson Sun)/AP

Atkins, Arkansas: Damaged homes and vehicles Photograph: Mike Wintroath/AP

Atkins, Arkansas: A tornado funnel cloud Photograph: Mike Avery/The Courier/AP

Tyler, Texas: Lightning rolls across the sky as powerful thunderstorms stretch across Texas to Tennessee Photograph: Dr Scott M Lieberman/AP

Atkins, Arkansas: Jackie Baird looks over her mother-in-law's damaged home Photograph: Mike Wintroath/AP

Atkins, Arkansas: Cyerice Martin comforts her sister, Seavia Dixon, amid the wreckage of her home Photograph: Mike Wintroath/AP

Atkins, Arkansas: Becky Wilson searches the debris at her mother's house a day after a tornado ripped through the town Photograph: Rick Gershon/Getty

Atkins, Arkansas: Fallen trees surround what remains of two mobile homes Photograph: Danny Johnston/AP

Jackson, Mississippi: Union University students wander past the girls dormatory Photograph: Jim Weber/AP

Atkins, Arkansas: Randi Schutt looks through family photos found while searching through debris Photograph: Rick Gershon/Getty

Greenville, Kentucky: A paramedic comforts a trailer park resident Photograph: John Dunham/AP

Clinton, Arkansas: A school bus among the scattered debris of what was the Rivertrail boat factory Photograph: EPA