There's an emerging bust forecast from a couple models, at least for Thursday and Thursday night. Unfortunately, it looks very plausible. DVN is talking about this possibility as well. If a big MCS dives down through Missouri Thursday morning, then the Thursday evening MCS may fire up in Missouri again, along the boundary. If that happens, locations to the north will be in a major screw zone.
Much of Iowa may need to wait til Friday night when a disturbance rides up through the state. Hopefully, the Missouri convection will die off before then.
Here's the WPC forecast through Friday morning.
Here's the HRRR