Tornado Alley in the central U.S.
mostly in America the tri state tornado but most part of the world it is the Daulatapur Salturia Bangladesh tornado
The most destructive tornado on record in North America was the Joplin, Missouri tornado of May 22, 2011. The cost of damage was $2.8 billion.
Tornadoes are most common in a region called Tornado Alley, which stretches roughly from Texas to South Dakota and Iowa.
the tri state tornado of march 18 1925 killed 695 people injuring 2.027
tornado alley
"Tornado Alley" is the media-driven common term- while it's boundaries are not clearly defined, the core of activity runs from northern Texas into Oklahoma and Kansas, and on into Nebraska in the US. Bangladesh and East India have the highest frequency of tornadoes outside of the central and southern US.
tornado alley in the Midwest which Texas has the most tornadoes on average
April May and June generally have the most tornado activity while December, January and February generally have the least.
The United States has the most annual tornadoes at over 1200 on average.
Theoretically tornadoes can occur anywhere on earth, but they are most common in North America between the Rocky Mountains and Appalachian Mountains. There is a place in the US called Tornado Alley
most earthquakes are found around america
If you are asking about which layer, tornadoes occur in the troposphere, as does most weather.