— Basehunters Chasing (@Basehunters) May 19, 2014
The image was captured by the Basehunters storm chasers group and shows a supercell thunderstorm.
Supercells are the least common type of thunderstorm, but they're the most severe class and can last for hours.
They're most commonly seen on the Great Plains and are caused by a rotating updraft, which is why they're sometimes called rotating thunderstorms.
Supercells have the capability to produce tornadoes, damaging hail and extremely strong winds.
Related on MNN: