These setups are tough. If you're not a forecaster doing day-to-day forecasting these setups probably just go unrecognized because they aren't the "big" setups. They are also tough because it's not like they produce every time. It all comes down to just getting enough CAPE in the lowest few km combined with the right amount of shear. There really is no "threshold" either too for value. Ultimately, it's dependent on whether a convective updraft can become mature enough to utilize the ingredients.
But looking at mesoanalysis this morning, you had a pocket of 150 m2s2 of 0-1km helicity combined with 100+ J of 3km CAPE. That's a pretty solid combination, especially with LCL's around 500m. Warm front probably provided enough llvl lift and inflow was drawing in from the high theta-e air.