Tornado frequency can be described based on statistics. The National Climatic Data Center describes the average number of tornadoes by state based on the years 1953 through 2004.
Average Annual Number of Tornadoes, 1953-2004
- Alabama...25
- Alaska...0
- Arizona...4
- Arkansas...25
- California...5
- Colorado...22
- Connecticut...1
- Delaware...1
- Florida...55
- Georgia...22
- Hawaii...1
- Idaho...3
- Illinois...35
- Indiana...22
- Iowa...37
- Kansas...55
- Kentucky...12
- Louisiana...27
- Maine...2
- Maryland...6
- Massachusetts...3
- Michigan...17
- Minnesota...25
- Mississippi...27
- Missouri...30
- Montana...7
- Nebraska...45
- Nevada...1
- New Hampshire...2
- New Jersey...3
- New Mexico...9
- New York...7
- North Carolina...19
- North Dakota...22
- Ohio...15
- Oklahoma...57
- Oregon...2
- Pennsylvania...12
- Rhode Island...1
- South Carolina...14
- South Dakota...29
- Tennessee...15
- Texas...139
- Utah...2
- Vermont...1
- Virginia...10
- Washington...2
- West Virginia...2
- Wisconsin...20
- Wyoming...11
Source: The National Climatic Data Center - Tornado Frequency Map
