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Deadliest Tornadoes

Season 39 Episode 10 | 53m 45s

In 2011, the worst tornado season in decades left a trail of destruction across the U.S., killing more than 550 people. Why was there such an extreme outbreak? How do such outbreaks form? With modern warning systems, why did so many die? Is our weather getting more extreme - and if so how bad will it get?

Aired: 04/09/12 | Expires: 06/16/20
National Corporate funding for NOVA is provided by Carlisle Companies. Major funding for NOVA is provided by the NOVA Science Trust, the Corporation for Public Broadcasting, and PBS viewers.
Extras
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Go behind the scenes as NOVA visits the Vera Rubin Observatory in Chile.
You probably won’t win big playing the Lottery but your brain may want to keep trying.
Forensic science is put to the test after the first-ever staged multi-vehicle pileup.
Forensic science is put to the test after the first-ever staged multi-vehicle pileup.
A first-of-its-kind experiment aims to stage a multi-vehicle pileup to gain new data on car safety.
A first-of-its-kind experiment aims to stage a multi-vehicle pileup to gain new data on car safety.
Investigate medical algorithms in which the patient’s race drives decisions.
After centuries of pseudoscience, researchers examine the causes of racial health disparities.