You want broad trough , not a compact ejecting upper low. Look for waves to rotate around the trough to spark an outbreak.
Look for s/w rotating around broad trough axis.
Tomorrow's system is a southern stream upper low that remains an upper low and not broad. In the back of your head you should look for what can go wrong. Typically wind fields will be veer back veer, or speed of the system is not ideal. Also usually cloud cover with these southern stream vorts doesn't allow sufficient build up of 03 km cape.
https://gyazo.com/4e21b68ed657c4990f86f67510a89971 Veer back veer noted around 2 -3 km .
Summary looks for storms to be on going in morning, but move north of the warm front. Storms should take off after 23z Se arkansas and move quickly east in a messy band into north Alabamy overnight. 1 or 2 tornadoes and swaths of wind are likely. Hail generally under 2.5 inches.