Andrew Pritchard
EF5
In Wisconsin, we went from 62 tornadoes in 2005 to 10 in '06. You'd think given the proximity of the states that tornado activity would be more closely linked, but instead they are often opposite. Usually what happens is an outbreak day in one is a bust day in the other, because out of all the areas of the weather system expected to produce tornadoes (warm front, triple point, along the cold front etc) only one actually does.
Funny that you mention that, because last year Illinois had a very down year, while Wisconsin has their huge year. I believe Illinois too, only had 19 tornadoes reported in 2005.