An amazing 'firenado' caught on video in Oregon

CORNELIUS, Ore. -- This is a fire tornado -- or "firenado."

It occurred not far from Portland. The footage posted by the Cornelius Fire Department shows the twister spinning up smoke and flames as it moves across a field. Watch -- and it becomes a funnel of flames.

They are also called fire whirls, created when a wildfire or brush fire creates its own wind, which can turn into a spinning vortex of flames.

Crews were able to put out the fire without anyone getting hurt.