This system is moving slower than the previous forecast... I would target central and western IA and middle/southern MN (mini-supercells along the warm front)... Anywhere further east than that, and it will be getting dark by the time the storms arrive, and they will likely be linear by then. Instability looks good, as well as SRH of 200-300m2/s2, so a few tornadoes are certainly possible in the mentioned area...
For points further east... If the ETA has it's way, expect a line to roar through between 00Z and 06Z SAT... (Eastern IA around 00Z, and later points east)...
Also of GREAT concern is the ETAs' lack of QPF for the entire event across that area - That's how the last event portrayed things, and everyone discarded it... It still possible that forcing will be a little too difuse for the amount of shear...