Significant Severe Weather Threat Sunday. The limiting factor would be instability.

...THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS FROM
   ILLINOIS/INDIANA/WESTERN OHIO SOUTHWESTWARD TO THE ARKANSAS/NORTHERN
   MISSISSIPPI VICINITY...

   ...SUMMARY...
   A widespread/substantial severe-weather episode is forecast across
   an area centered on the Ohio/Mid and Lower Mississippi/Lower
   Missouri/Tennessee River Valleys.  Very large hail, damaging winds,
   and strong tornadoes are expected.

The key for the Cincinnati area will be just how much instability develops Sunday afternoon. 
All other parameters for severe weather will be in place.