zero.
Far to many to count. Just from 1950 to 2009, there were over 53,000 tornadoes confirmed in the United States alone.
There were 79 tornadoes in Alabama in 2009.
Texas had 129 tornadoes in 2009.
There were 129 tornadoes in Texas in 2009.
over a 1000 and a 1000 tornadoes are on average per year
There were 8 recorded tornadoes in New York in 2012.
Georgia had 55 confirmed tornadoes in 2009.
Kansas had 103 confirmed tornadoes in 2009.
There were 129 confirmed tornadoes in Texas in 2009.
There were 37 recorded tornadoes in Florida in 2009.
There were 52 tornadoes in Illinois in 2009.
There were 11 tornadoes in Indiana in 2009.