Bwahahahahahahaha, you didn't look at my source that showed up to 5-10 inches at the rate 1-3 inches per hour.
A heavy precipitation event was forecast for the region during the previous days. For example, the NOAA/NWS HRRR forecast from 8 PM July 3 (the evening before) predicted a band of heavy rain over central Texas.
As the event got closer, with National Weather Service radar showing the event unfolding, the San Antonia office made the threat explicit,
noting a very dangerous flash event.
3-7 inches fallen in the last 2-3 hours was mentioned.
You are ignoring the evidence again.