This is a pretty powerful,  ZONAL jet stream at 250 mb, 33,000+ feet above the ground late on Thursday. Winds in the jet streak are 160+ knots which is around 185 mph.

The location is too far north to cause a major severe weather out break as far South as the Ohio River.
Some strong storms north of the Ohio River, especially much farther north....YES!

The Storm Prediction Center has just boosted their risk to ELEVATED across northern parts of IL/IN/OH. This is level 3 out of 5, still below moderate. level 4 and high, level 5. 

The strength of the jet stream (shown on the previous page) means that strong tornadoes are a possibility. Probably not an outbreak but the type of risk that people under tornado watches tomorrow, especially in the green and brown shades below,  should be ready to go to their safest place in case we have tornado warnings.

https://www.spc.noaa.gov/products/outlook/day2otlk.html

1. Categorical risk

2. Risk of a tornado within 25 miles of any 1 point. The brown is 5%+. The hatched area means that the tornadoes could be STRONG.

3. Risk of severe thunderstorm winds within 25 miles of any point. The red shade is 30%. The hatched area means risk that the winds cold be 70+ mph compared to the typical 58+ mph.

4. Risk for hail. The hatched area means it could be LARGE hail. The red shade is 30%.