![](https://iri.columbia.edu/wp-content/uploads/2016/03/johntornado2-150x150.jpg)
Extreme Tornado Outbreaks Have Become More Common
A new paper shows that the average number of tornadoes per outbreak has grown by more than 40% over the last half century. The likelihood of extreme outbreaks – those with many tornadoes – is also greater. Most death and destruction inflicted by tornadoes in North America occurs during outbreaks—large-scale weather events that can last one to […]