This is not what we want to see, but take a look at the Storm Prediction Center's tornado risk area. The highest risk in the entire country highlighted right over Kentuckiana. That's because an area of low-pressure will be moving through late today and tonight, and this is the area with the most "turning" of the winds. Any severe storm could produce damaging winds, hail, heavy rain, lightning, but also an isolated tornado. Be ready for watches or warnings mainly after 4pm through Midnight.
The next map is the Storm Prediction Center's wind risk. The highest wind damage probabilities are mainly south of the Ohio River, where the air will be more unstable (thus stronger storms). All of us have a much higher chance of straight-line wind damage, than the tornado risk, which is often the case. Get your outdoor chores done early, then have the family prepared to seek shelter late afternoon through late tonight.
A couple of factors have a chance of limiting the severe weather threat, including clouds (reducing instability), and not overly strong winds throughout the atmosphere. However, don't let your guard down, and be ready for anything.
Much cooler as showers taper off early tomorrow, with highs in the 60s Friday.