In the summer of 2019, Desert Research Institute (DRI) scientist Rosemary Carroll, Ph.D., waited for the arrival of the North American Monsoon, which normally brings a needed dose of summer moisture to the area where she lives in Crested Butte, Colo. - but for the fourth year in a row, the rains never really came.
source https://phys.org/news/2021-02-climate-summer-monsoons-streamflow.html