Meteorologists say this year's warm winter provided key ingredient for Midwest killer tornadoes
![Meteorologists say this year's warm winter provided key ingredient for Midwest killer tornadoes](https://static.independent.co.uk/2024/03/15/13/APTOPIX_Severe_Weather_07156.jpg?width=1200&auto=webp)
Tornado experts say the winter’s record warmth provided the key ingredient for a Midwest outbreak of deadly tornadoes and damaging gorilla hail that hit parts of the Midwest Wednesday and Thursday