Its a bit soon to jump on this concern especially since no other model has it yet. If we see some consistency there would be concern of that screwing with the setup.
I am absolutely getting concerned about Chicago Metro on this one. Models have supercells all around and some have them moving into the suburbs around 22-02z.
Ended up down to 34 intrahour, and then the sun came out and shot back up to 43. If someone said it was snowing 4 hours ago to me right now, I wouldn't believe them.
This definitely looks like a very significant event for Friday that would cover a good portion of the western part of the subforum. The instability has only trended upward run to run for the areas of MO/IA/IL, with an incredibly dynamic wind field. I would suspect we see a day 2 MDT come out tonight for a large area all the way down to Memphis.
Agreed, the first thing I thought when I looked at the 500mb pattern was it had some similarities to 3/27/91, albeit timing is not right locally. It is definitely something to watch tho through the week.