It was reported the city of Moore, OK, has been visited by several tornadoes over the years: http://www.srh.noaa.gov/oun/?n=events-20130520
Although Wisconsin doesn't experience as many tornadoes as Oklahoma does (average of 23 versus 57 for Oklahoma), there have been many cases in Wisconsin in which tornadoes did cross paths. In fact, it is more common than you think.
The most recent case was just east of Sturtevant, Racine County, in which two tornadoes in 2010 crossed the same location just southeast of where State Highway 11 and North Branch Pike River intersect. This is shown in the map below. Click on image for a larger version.
Looking across all of Wisconsin, we can easily identify many locations where at least 2 tornadoes crossed the same point - some in cites and others in rural areas. The maps below were produced by Doug Norgord of Geographic Techniques, Inc. Doug is a former Wisconsin State Climatologist. The map on the left depicts all tornadoes (EF0 through EF5) from 1950 through 2011. The map on the right shows all tornadoes for the years 1950 through 2010, but plotted on a background with county borders. Click on image for a larger version.
In 2010, Jason Palleria, a Student Volunteer, worked on a GIS project to identify locations in Wisconsin where tornado paths intersected. He restricted his mapping to only EF2 through EF5 tornadoes for 1950 through 2002 in order to reduce map clutter. Below on the far left is his statewide map. In the middle is a map for the Milwaukee/Sullivan County Warning Area. On the far right is a zoomed-in view of southeastern Wisconsin. Click on images for a larger version.
The tornado path intersection in the Pewaukee area involved 3 different tornadoes:
Yearly tornado plots for Wisconsin back to 2001 can be seen at this link: http://www.crh.noaa.gov/mkx/?n=wi_severe_weather_climatology Use the drop-down menu in the upper left side of the web page in the tornado section.
Additional tornado and severe weather information can be found on the Storm Prediction Center's WCM Web Page.
Kapela, WFO Milwaukee/Sullivan