Climate change is likely increasing the frequency of these devastating storms, as the warming air increases the number of days of weather favorable to tornadoes. The shifting of both the location and duration of these storms can also be expected, with places like the Mid-South and east of the Mississippi River — and their large populations — at greater risk. With tornado season expanding, earlier preparations must be made to save lives.
The science is not clear on any correlation between tornados and climate change, and there's no evidence that global warming is causing storms to happen more frequently. While some people claim that climate change is causing twisters to be more intense and more frequent — it could very well be the opposite is true, and that a warming climate may suppress the destructive storms.