Human influence has intensified extreme precipitation in North America
https://www.pnas.org/content/early/2020/05/26/1921628117New Study Shows Global Warming Intensifying Extreme Rainstorms Over North America | InsideClimate News
https://insideclimatenews.org/news/01062020/extreme-rain-study-climate-change?_hsenc=p2ANqtz-8jKgY9Ypfa9HOPpy5KlUOR66t12YoYpxYVMpJZvuT-m8C47qodxhNNOxD1WEhcZcUILByp7J6hgxfwN6wzyxUR-zYlbQ&_hsmi=88904924New Study Shows Global Warming Intensifying Extreme Rainstorms Over North America | The current warming trajectory could bring 100-year rainstorms as often as every 2.5 years by 2100 : science
https://www.reddit.com/r/science/comments/gvtdke/new_study_shows_global_warming_intensifying/