Oklahoma tornadoes - in pictures

Storm chaser Brad Mack records a tornado near a home in South Haven, Kansas Photograph: Gene Blevins/Reuters

Traffic damage on the I-40 after a tornado struck on the west side of Shawnee, Oklahoma Photograph: Jim Beckel/AP

The funnel of a tornadic thunderstorm almost touches the ground near South Haven, Kansas Photograph: Gene Blevins/Reuters

Alli Christian (left) returns Jessica Wilkinson's dog Bella after finding her among the wreckage of Wilkinson's home shortly after a tornado struck in Norman, Oklahoma Photograph: Steve Sisney/AP

This aerial photo shows a home with extensive damage caused by the recent tornado in Granbury, Texas Photograph: G.J. McCarthy/AP

Lightning from a tornadic thunderstorm passing over Clearwater, Kansas strikes an open field Photograph: Gene Blevins/Reuters

Two brothers survey their damaged home in Granbury, Texas Photograph: G.J. McCarthy/AP

Firefighters assist a lorry driver as he is taken from the cab of his overturned truck on the west side of Shawnee, Oklahoma. He was taken out of the cab through the windscreen Photograph: Jim Beckel/AP

Storm chasers get close to a tornadic thunderstorm in South Haven, Kansas Photograph: Gene Blevins/Reuters

A smashed car sits in a field in Granbury, Texas, damaged by a tornado on 15 May that killed six people Photograph: G.J. McCarthy/AP

A woman searches the remains of her home for valuables in Granbury, Texas after a tornado Photograph: G.J. McCarthy/AP

Lightning from a tornado passing over Clearwater, Kansas, strikes a field Photograph: Gene Blevins/Reuters

An aerial view of the damage caused by the recent tornadoes in Cleburne, Texas Photograph: MCT/Landov/Barcroft Media

A destroyed truck that was blown off the 40 freeway after a tornado swept through Shawnee, Oklahoma Photograph: Gene Blevins/Reuters

Storm chasers get close to a tornadic thunderstorm in South Haven, Kansas Photograph: Gene Blevins/Reuters