Something else @slenker on plains set ups, and this is something I learned from reading both Fred’s and @CheeselandSkies posts. The plains are pretty close to their EML source region. So it’s actually not uncommon for the cap to be in place for an event, erode, and then build back in as the day goes on with the Southwest flow. This actually happened on 5/3/99, and while this could be a detriment to more maturing updrafts, full fledged mature supercells like the Bridge Creek supercell can simply brush it off. The cap also built back in on 5/20/2019. Compare that to over here in Dixie, most of the time when the cap erodes, it’s gone.