Scientists strive to understand what caused the devasting tornado outbreak of April 2011. Could their research improve future tornado prediction?
Director: Sean Varley
Witness: Joplin Tornado
Traqueurs de tornades
Where Was God?
Countdown to Survival: Tornado
Wild Weather
Stormchasers
National Geographic: Inside the Mega Twister
Mr. Tornado
Twisted
Forces of Nature
Tornado, a year later
Tornado! Hurricane! Flood!: Wonders of the Weather
