There's a strong 500 jet above, along with some breaks in the clouds arriving later this afternoon, which will lead to some rapid heating. This will help fuel some storms. Looks like a line is developing across central Indiana now. Also appears that this has some strong winds behind the front - high wind warnings across the Dakota's! Here's the surface reports as of 12noon.

http://home.fuse.net/sharonvilleweather/
Local Cincinnati Mesomap: http://home.fuse.net/sharonvilleweather/mesomap.htm