Things just didn't really line up with this pattern in the manner they seemed to be back at the beginning of the month. We had multiple systems come through, but they just didn't line up quite right. There's still time for a larger scale event to take place but that window is shrinking before the pattern shifts out to the plains (And even there its a little iffy at the moment)
Really shows how difficult it is to get a big outbreak pattern. So many things have to line up just right, and that hasn't happened really at all ever since 2014.