General Discussion

mega-drought in the southwest, according to some.
https://www.accuweather.com/en/severe-weather/is-tornado-alley-shifting-east/1162839

"Where is 'tornado alley?' It may be time to update the original definition of the area that gets frequent tornadoes, which was created before the turn of the century.
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With powerful tornadoes decimating areas in the Midwest and the southeastern U.S. over the past 20 years, there now may be a reason to believe that Tornado Alley has shifted east.

"When you look at the trends in where tornadoes have occurred in recent years, it's very clear that there have been more tornadoes farther south and farther east away from what people have typically known as the Tornado Alley across the Plains," AccuWeather Chief Meteorologist Jonathan Porter explained.
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AccuWeather Lead Long-Range Meteorologist Paul Pastelok attributed tornadoes becoming more frequent to the east of Tornado Alley due to the lack of moisture in the original Tornado Alley, which can be traced back to the 20-year mega-drought gripping much of the Southwest.

"You're going to see higher pressure aloft over the Southwest, and that will bring drier air into the Plains and force the storm track and the worst of the tornadoes to develop farther east into the Mississippi and Tennessee Valley," Pastelok explained. "You're going to need to break that drought to get more consistent action going on in Tornado Alley."...(more)