This Tornado Changed Science - El Reno 2013

On May 31, 2013, a tornado unlike anything ever measured formed near El Reno, Oklahoma. What started as a routine storm quickly grew into the widest tornado ever officially recorded—stretching an astonishing 2.6 miles (4.2 km) across. With rapidly changing paths, violent winds, and almost no warning, it became one of the most unpredictable tornadoes in history. In this documentary, we break down how the El Reno tornado formed, why experienced storm chasers were caught off guard, and the tragic events that changed severe weather research forever. Using real footage, radar data, and eyewitness accounts, you'll see how this record-breaking storm rewrote what scientists thought they knew about tornadoes.