Tornadoes have caused severe disasters around the world, and have been one of the most violent and damaging natural hazards to human life and property. Experimental simulation of tornado-like vortices ...

AMES, Iowa – The Iowa State University Tornado Simulator kicked up a thick and slowly spinning funnel cloud over a model of a small town, overwhelming the miniature streets, buildings and homes.

When you see what looks like two tornadoes spinning side by side, it’s likely a multi-vortex tornado. Here’s how these ...