The 2008 tornado season was very active in Wisconsin with 38 tornadoes reported. This makes 2008 the third most active year for tornadoes in Wisconsin since accurate tornado records began. The busiest season was in 2005, when 62 tornadoes were reported. Wisconsin averages 21 twisters per year.
Five tornadoes occurred in the NWS Green Bay service area of northeast Wisconsin. Marathon County led the way with three. The average number of tornadoes in northeast Wisconsin is seven. So, while the state was much more active than normal, northeast Wisconsin's total was a bit less than average.
The strongest tornado in Wisconsin last year was an EF-3 intensity twister that struck western Kenosha County on January 7, the earliest tornado (in a calendar year) in Wisconsin weather history.
Below is a graphic showing the distribution of tornadoes across Wisconsin in 2008 (click for larger image):
Data compiled by NWS Milwaukee/Sullivan, NWS Green Bay, NWS La Crosse, NWS Minneapolis, and NWS Duluth.