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.
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. Impact




