The 2021 tornado season may be more destructive because of La Niña. Here’s the forecast. 

The climate pattern called La Niña – a natural cycle marked by cooler-than-average ocean water in the central Pacific Ocean – is one of the main drivers of weather around the world, especially during the late fall, winter and early spring.

https://www.usatoday.com/story/news/nation/2021/02/23/tornado-season-forecast-2021-la-nina/4558414001/