I did see this from ctp disco yesterday:
Observed PW (1.36) is also easily in the 90th percentile for this time of year and not far from the maximum. What this means is the rainfall in our eastern zones is highly efficient, with radar under-estimates noted. KCCX radar was underestimating rainfall amounts significantly earlier today, and a switch to Summertime Convective and then Tropical Z-R was done to try to more accurately depict upcoming, and storm total rainfall across our eastern zones.