'Hay devil' caught on camera in Hampshire
30 August 2013 Last updated at 02:44 BST
A man has captured a "vortex of hay" on video camera near his home in Hampshire.
Kevin Farndell saw the effects of the small whirlwind in fields by the village of Dummer.
The eyewitness, who was covered in falling debris from the "hay devil", called it "quite a sight".
Krista Mitchell at the BBC Weather Centre said: "The ground gets very hot and strong convection takes place.
"This rapidly rising air lifts dust, or straw, into the air. When conditions are right, the rising air will rotate."