That depends on which tornado record you are referring to. Here are a few records:
In the United States. This is misleading however as this only applies to recorded tornadoes. many countries where tornadoes occur do not keep detailed record of them.
There were no recorded tornadoes in Ohio in 1988.
The United States holds the world record for the number of annual tornadoes, with every state experiencing at least one in its history. Tornadoes are most common in the central part of the country, particularly in an area known as Tornado Alley.
Tornadoes are counted to keep a statistical record and to verify the accuracy for forecasts.
There is no way of knowing. Tornadoes have been around longer than there have been people to record them.
Texas has had the most recorded tornadoes.
It is unknown. Most countries do not keep records of their tornadoes and the one with the best record keeping, the United States, has only been doing so since 1950. Even then a large number of weak tornadoes in the U.S. were missed. Since record keeping began in 1950 the U.S. has recorded over 56,000 tornadoes. The figure for actual tornadoes worldwide in the same period is probably in the hundreds of thousands.
The year with the most violent tornadoes on record was 1974, with a total of 36 tornadoes rated as violent.
tornado alley is where most tornadoes are located.
There were 145 recorded tornadoes in Alabama in 2011, a record for that state.
That is not known. Official statistics say there are about 2,000 tornadoes in the world per year, but the actual number of tornadoes is probably much higher. Many countries do not keep record of their tornadoes and so only ones that cause major damage become known. Many tornadoes that occur in unpopulated areas go unnoticed.
Official record shows 1,263 tornadoes in the United States in 2005.