Devastating wildfires in Southern California were triggered by rapid shifts from wet to extremely dry weather, a phenomenon known as hydroclimate whiplash. Research led by UCLA climate scientist Daniel Swain shows that these intense weather swings, exacerbated by human-caused climate change, are increasing in frequency. The extreme weather shift in Southern California has led to record-dry conditions, fueling dangerous wildfires. As global warming continues, these weather swings are projected to become more volatile, with precipitation concentrated in intense bursts. Human-caused climate change is driving these extreme swings, which bring greater risks of wildfires, floods, landslides, and disease outbreaks.
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