Few places experience both the beauty and the fury of California's natural world like South Lake Tahoe. The picturesque city of 21,000, nestled high in the Sierra Nevada mountains and famed for its ski resorts, has endured a wildfire, drought, and now, dangerous amounts of snow - all in a roughly two-year period. Throughout March, high-altitude storm systems known as atmospheric rivers pummeled South Lake Tahoe during what climate scientists have dubbed a winter for the history books. The heavy snowfall and precipitation collapsed roofs, closed grocery stores, trapped residents in their homes, and rendered highways impassable. Parts of the region remain under flood advisories that could continue into spring, as the snow is expected to melt with incoming rain and warmer temperatures. City leaders and climate scientists said that the weather extremes South Lake Tahoe is experiencing portend a dramatic future for the entire state. "Moving to the mountains you have a healthy respect for what that brings," Lindsey Baker, a deputy city manager for South Lake Tahoe told BBC News. "But the extraordinary nature of this season, the year and a half of natural disasters that we faced as a community....We are facing the direct impacts of climate change." California rang in the New Year with a series of atmospheric rivers which caused historic flooding and landslides up and down the state. Several people died. Another bout began in late February and early March, dumping historic levels of snow in the state's high-elevation mountain ranges. Snow accumulated on the peaks around Los Angeles, even at lower elevations where precipitation usually falls as rain. While beautiful, and a relief for the state's dwindling water supply, the storms wreaked havoc. Multiple counties are under emergency orders. Communities in the San Bernardino Mountains, about a two-hour drive due east from Los Angeles, were recently devastated by heavy snowfall that damaged structures and left unprepared residents unable to leave their homes for basic supplies. Farther north, the Sierra Nevada Mountains, home to iconic locations like Lake Tahoe, Yosemite National Park, and Mammoth Mountain, now have record levels of snowpack. "In a longer-term context, this is not an extraordinarily cold winter, but it is an extraordinarily wet and snowy winter," said Daniel Swain, a climate scientist with the University of California, Los Angeles. On social media, South Lake Tahoe posted photos of snow bursting through kitchen windows and smashing through their entrances. On March 10, a gas station canopy collapsed like a pile of toothpicks because of all the weight it had accumulated. Emergency officials frantically warned residents to clear snow from their roofs. So much snow had accumulated on Susan Korcher's home that her son was able to kayak off the roof. She estimated 6ft (1.83 meters) to 8ft in total. From some angles, her home looked completely buried. "This has just been non-stop," said Korcher, a forester with the University of California who has lived in South Lake Tahoe for 16 years. "Nothing but snowing and raining pretty much for months. It's much more intense I would say than any other winter I've lived here." One might find it hard to imagine that a warming planet would cause such an event. But, according to Swain, that's exactly what's happening. The world has already warmed by about 1.1C since the industrial era began, and temperatures will keep rising unless governments around the world make steep cuts to emissions. That transformation has had a profound effect on California. "I think the reality is, California's climate is becoming even more California-like, if you will," said Swain. "It was already a place that saw these wide swings between drought and flood. But these swings have become larger." "We've had some of the driest years on record and the wettest year on record, in the same decade," he said. "This hydro-climate whiplash, this precipitation variability, it's always been high in California, and it does appear to be increasing. And that's something that's clear in predictions...of warming climate." Before receiving historic amounts of rain, Lake Tahoe was suffering from the effects of California's historic drought. In August 2021, the Caldor fire ripped through a dry Sierra Nevada, burning 221,000 acres and forcing the entire population of South Lake Tahoe to evacuate. That same year, the lake's water levels fell to its lowest point since 2016. Climate change has been linked to heightened conditions for wildfires and droughts around the world, including in California. The wild swings in climate have tested even stalwart South Lake Tahoe residents like Korcher. — BBC
