News Tornado Alley’s most devastating years since 1950: Severe weather returns after quiet 2018 May 29, 2019May 29, 2019 Thomas C. Frohlich and John Harrington, 24/7 Wall Street Comments Off on Tornado Alley’s most devastating years since 1950: Severe weather returns after quiet 2018 The states of Texas, Oklahoma, Nebraska, Kansas, and South Dakota are known as Tornado Alley for their history of severe weather.