Parameters favorable for widespread severe storms from the Gulf Coast northward into the Mississippi and Ohio Valleys. The Ohio and Tennessee Valleys are at the highest risk for widespread damaging winds. Supercells, with a few violent tornadoes are quite likely as well.
Here is a breakdown of the likelihood of severe weather in a given area, starting Wednesday morning continuing through Thursday Morning.
Update: 12/24/15
Here are the SPC Storm Reports for the Event:
