A storm coming out of the Rockies will first produce a few severe storms across Minnesota today then more widespread severe storms will develop in Kansas Tuesday and spread east Wednesday and Thursday. I think in this case the primary threats will be damaging winds and large hail. One could say based on the rotation tracks that a tornado threat exists across central Kansas Tuesday evening. A solid line of storms may from by Wednesday which would mean more of a wind damage event moving across the lower Mississippi Valley.
The event this evening will also be just wind and hail but I am sure some of the storm chasers may see a wall cloud or two associated with the storms. Dew points are just not high enough for tornado development.