The classic, textbook supercell looks much like the figure above. The storm will have a flat updraft base and potentially a wall cloud underneath the updraft. The precipitation (rain and hail ...

A colossal storm cloud swept through Sorocaba, São Paulo, on Wednesday, leaving locals stunned by its dramatic and foreboding appearance. Identified as a supercell with a mesocyclone, the cloud ...

Often, with supercell or "tornadic" thunderstorms ... Another classic feature of a tornado-generating storm is a wall cloud, which looks like a portion of the cloud that's lower than the rest ...