TV NOVA - Season 40 Episode 20 : Oklahoma's Deadliest Tornadoes NOVA - Season 40 Episode 20 : Oklahoma's Deadliest Tornadoes 7.008/10 by 131 users On May 20, 2013, a ferocious EF5 tornado over a mile wide tore through Moore, Oklahoma, inflicting 24 deaths and obliterating entire neighborhoods. It was the third time an exceptionally violent tornado had struck the city in 14 years. Yet predicting when and where these killer storms will hit still poses a huge challenge. Why was 2011—the worst ever recorded tornado season that left 158 dead in Joplin, Missouri—followed by the quietest ever year of activity prior to the Moore disaster? Can improved radar and warning technology explain why so many fewer died in Moore than in Joplin? And will tornadoes get worse as Earth's climate heats up? In this NOVA special, we meet scientists in the front ranks of the battle to understand these extreme weather events. We also meet storm survivors whose lives have been upended and learn how we can protect ourselves and our communities for the uncertain future. Details Casts Posters Images Title NOVA - Season 40 Episode 20 : Oklahoma's Deadliest Tornadoes Alternative Titles PBS新星Nova, نوا, نووآ, PBS Nova First Air Date 1974-03-03 Last Air Date 2025-09-24 Number of Episodes 1012 Number of Seasons 52 Genres Documentary, Networks PBS, Casts Plot Keywords , Episodes List NOVA Season 40 :Episode 1 Secrets of the Viking Sword Secrets of the Viking Sword 2012-10-10 PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and... NOVA Season 40 :Episode 2 Forensics on Trial Forensics on Trial 2012-10-17 PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and... NOVA Season 40 :Episode 3 Mystery of Easter Island Mystery of Easter Island 2012-11-07 PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and... NOVA Season 40 :Episode 4 Ultimate Mars Challenge Ultimate Mars Challenge 2012-11-14 PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and... NOVA Season 40 :Episode 5 Inside the Megastorm Inside the Megastorm 2012-11-18 PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and... NOVA Season 40 :Episode 6 Doomsday Volcanoes Doomsday Volcanoes 2013-01-02 PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and... NOVA Season 40 :Episode 7 Decoding Neanderthals Decoding Neanderthals 2013-01-09 PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and... NOVA Season 40 :Episode 8 Rise of the Drones Rise of the Drones 2013-01-23 PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and... NOVA Season 40 :Episode 9 Who Killed Lindbergh's Baby? Who Killed Lindbergh's Baby? 2013-01-30 PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and... NOVA Season 40 :Episode 10 Building Pharaoh's Chariot Building Pharaoh's Chariot 2013-02-06 PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and... NOVA Season 40 :Episode 11 Earth From Space Earth From Space 2013-02-13 PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and... NOVA Season 40 :Episode 12 Mind of a Rampage Killer Mind of a Rampage Killer 2013-02-20 PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and... NOVA Season 40 :Episode 13 Meteor Strike Meteor Strike 2013-03-27 PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and... NOVA Season 40 :Episode 14 Ancient Computer Ancient Computer 2013-04-03 PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and... NOVA Season 40 :Episode 15 Australia's First 4 Billion Years: Awakening Australia's First 4 Billion Years: Awakening 2013-04-10 PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and... NOVA Season 40 :Episode 16 Australia's First 4 Billion Years: Life Explodes Australia's First 4 Billion Years: Life Explodes 2013-04-17 PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and... NOVA Season 40 :Episode 17 Australia's First 4 Billion Years: Monsters Australia's First 4 Billion Years: Monsters 2013-04-24 PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and... NOVA Season 40 :Episode 18 Australia's First 4 Billion Years: Strange Creatures Australia's First 4 Billion Years: Strange Creatures 2013-05-01 PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and... NOVA Season 40 :Episode 19 Manhunt - Boston Bombers Manhunt - Boston Bombers 2013-05-29 PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and... NOVA Season 40 :Episode 20 Oklahoma's Deadliest Tornadoes Oklahoma's Deadliest Tornadoes 2013-05-29 PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and...