National Weather Service Weather Forecast Office

The are a lot of ways to describe the probability of a tornado occurring in a particular area.

One method is to calculate the probability of a tornado occurring within 25 miles of a given point.

Grady Dixon, Assistant Professor,Department of Geosciences, Mississippi State University, recently caculated such a statistic and plotted the results on a base map.  Below are the results.

As you can see, southern Wisconsin has a couple small areas with a light green color, indicating 1 tornado every 2 years within 25 miles of a point in the green-shaded area.

Additional information on Wisconsin's severe weather climatology can be found at this link....   http://www.crh.noaa.gov/mkx/?n=wi_severe_weather_climatology