While it seems unlikely news after the winter that California’s ski resorts just enjoyed, a new study reports that some of the state’s ski areas are poised to see a massive amount of its snowpack disappear over the next several decades. The study came out of UC San Diego’s Scripps Institution of Oceanography, and surmises that the increased rainfall resulting from climate change will wash out the snowpack at ski resorts between 5,000 and 10,000 feet—which is most of them—by 2100. If nothing is done to stop it, the  effects will begin to be seen as early as 2050, less than 30 years from now. Without getting too meteorologically complicated, atmospheric rivers are at the heart of the crisis.