Epic supercell thunderstorm clouds in Kansas from photographer Camille Seaman. - This is the stuff that literally gives me nightmares! Thank God I've never lived in Kansas or else I would have to be on anxiety medication.
supercell is basically a stronger, more tornado-enabled version of a regular storm cell. This is because—much like tornadoes—supercells have the tendency to spin around a lot, but also—and more importantly—because supercells can actually create tornadoes.