Documentary Film: 1974 Super Outbreak: Day of The Killer Tornadoes (states, alley, occur)

[Doctor Z]

This documentary shows how tornado warnings were issued back in the 1970's. It's surprisingly well done and exciting to watch:


https://www.youtube.com/watch?v=9JjF-SlqfOg&t=21s

[cevven]

Originally Posted by Doctor Z

This documentary shows how tornado warnings were issued back in the 1970's. It's surprisingly well done and exciting to watch:


https://www.youtube.com/watch?v=9JjF-SlqfOg&t=21s

Yeah the thing about the Midwest and Deep South east of the Appalachians is you have that hot Gulf stream heat clashing with cooler drier air, especially from the late winter into spring. That is a recipe for ultimate disaster. I know places like Mississippi, Alabama, Louisiana get it the worst, even more than states like Kansas, Nebraska, and Missouri (where they said traditionally tornado alley was). The deep south, especially in recent years, often gets the long track EF4/5's that are like a mile or two wide wiping out towns off the map.

[bmlx]

Originally Posted by cevven

Yeah the thing about the Midwest and Deep South east of the Appalachians is you have that hot Gulf stream heat clashing with cooler drier air, especially from the late winter into spring. That is a recipe for ultimate disaster. I know places like Mississippi, Alabama, Louisiana get it the worst, even more than states like Kansas, Nebraska, and Missouri (where they said traditionally tornado alley was). The deep south, especially in recent years, often gets the long track EF4/5's that are like a mile or two wide wiping out towns off the map.

Also, some La Niñas tend to favor tornado outbreaks in Dixie Alley (the South) and the Ohio Valley. Resurgent La Niñas are those which persist into spring and re-develop into a La Niña the following winter. The Super Outbreaks of 2011 and 1974 both occurred within a resurgent La Niña.