The following states have averaged 11-20 tornadoes per year* over the past 30 years:
Indiana (20 tornadoes per year)
Michigan (17)
Ohio (17)
Kentucky (17)
Pennsylvania (15)
Virgina (14)
Wyoming (12)
*note that these figures only represent means. The actual number of tornadoes in a state in any given year can vary significantly.
The United States averages about 1200 tornadoes per year, which would work out to about 3600 tornadoes in an average 3-year period.
united states
Texas, Oklahoma, Kansas, and Florida have the highest average number of tornadoes per year.
Tennessee averages about 30 tornadoes per year.
Michigan averages 18 tornadoes per year.
Texas with 147 tornadoes per year
Worldwide figures are not available, but the United States averages about 1200 tornadoes per year.
The United States averages about 1200 tornadoes per year, which would work out to about 3600 tornadoes in an average 3-year period.
It is unknown as most countries to not keep records of their tornadoes. The United States averages between 1,200 and 1,300 tornadoes per year.
united states
Texas, Oklahoma, Kansas, and Florida have the highest average number of tornadoes per year.
Florida and Kansas.
Tennessee averages about 30 tornadoes per year.
Michigan averages 18 tornadoes per year.
The United States, with an average of between 1,200 and 1,300 tornadoes per year.
About 30 tornadoes per year.
Based on data from the years 1981-2010, the following states average in the range of 20-30 tornadoes per year North Dakota (29 tornadoes per year on average) Georgia (27) North Carolina (26) Wisconsin (23) Tennessee (21) South Carolina (21) Most states average fewer than 20 tornadoes per year and several average more than 30. Note that these figures are only averages, and that in any given year a state may have significantly more or fewer tornadoes than its average. For example, Tennessee eexperienced no less than 92 tornadoes in 2011.