(AP) - More than 40 trillion gallons of rain drenched the Southeast United States in the last week from Hurricane Helene and a run-of-the-mill rainstorm that sloshed in ahead of it — an unheard of amount of water that has stunned experts. https://apnews.com/article/rainfall-helene-carolina-tennessee-georgia-climate-change-flood-fcba634e14a0ffa1a8e1fa85d7e2b390