Tornado Alley is shifting east—but scientists aren’t quite sure why

Experts say the causes are still unclear, but the change is consistent with a warming world. The effects on the ground could be devastating.



As the remnants of Hurricane Ida barreled north in September 2021, Chris Erdner heard a startling warning on TV: Residents in her area needed to seek shelter immediately. Erdner’s quiet suburban neighborhood in Montgomery County, Pennsylvania, was directly in the path of a tornado.


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