In the early hours of July 4, 2025, a torrent of 100 billion gallons of rain fell on Kerr County, Texas causing the Guadalupe River to rise meters in minutes. This tragedy was followed by intense flooding throughout the Midwest and northeast. In this episode, host of Let's Talk Risk, Dr. Sandra Alday, is joined by Dr. David Johnson of Purdue University to talk risk and rainfall as they try to understand recent flooding that has devasted parts of the country.