A major heat wave is set to slam Southern California over the coming days, bringing record-breaking temperatures that could soar near 100 degrees in Los Angeles. Weather officials describe this March heat wave as unprecedented in both intensity and duration, warning that the region will experience the most extreme March heatwave in US history. Heat advisories have been issued for several counties, including San Diego, Santa Barbara, and Ventura, with forecasts indicating temperatures will rise into the 90s and even higher in some areas. The extreme weather not only poses risks for residents but also threatens to shrink the Sierra Nevada snowpack, raising concerns about the upcoming fire season. As the West Coast braces for this unusual heat, discussions around climate change have intensified amidst the rising temperatures.