The most Tornado-prone country would have to be America.
Tornadoes are most common in America in: The Midwest Region, Indianapolis, Indiana, The Central Plains Region, Oklahoma, "Tornado Valley", The Golf Coast/Mid-South Region, New Orleans, Louisiana, The Southeast of Appalachians region, Atlanta, Georgia and the "Other" region, Clearwater, Florida.
The most talked about Tornado-prone region would be "Tornado Alley" as it ranked the overall number two out of 78 other areas. Here are some Oklahoma Tornado Fast Facts: 2.3 Tornadoes reported each year per 1609 kilometres. Peak Tornado month is May, with 42 tornadoes in that month since 1950. Oklahoma has had 16 deaths, 504 tornado injuries since 1950.
Here are some New Orleans Tornado Fast Facts: New Orleans has been hit 62 times since 1950. February is peak tornado month with 9 tornadoes in that month since 1950. 5 deaths have been reported due to tornadoes since 1950.
Here are some Atlanta Tornado Fast Facts: April is peak tornado month with 15 tornadoes in that month since 1950. It has been hit by 71 tornadoes since 1950.
Here are some Clearwater, Florida Tornado Fast Facts: 7.1 Tornadoes on average have been reported each year per 1609 kilometres. It has the top spot in a study for the most tornado prone city. There has been 122 tornadoes since 1950.
Here are some Indiana, Midwest Region Fast Facts: 1.7 Tornadoes reported each year per 1609 kilometres. Peak Tornado month is May, with 11 tornadoes in that month since 1950. The Marion Country in Indianapolis has had 41 tornadoes since 1950. There has been no Tornado deaths since 1950.