It’s supposed to be the rainy season in Southern California, but the last time Los Angeles measured more than a tenth-inch of rain was eight months ago, after the city logged one of the soggiest periods in its recorded history. Since then, bone-dry conditions have set the stage for the catastrophic wildfires now descending upon the metropolis from multiple directions.
This quick cycling between very wet and very dry periods — one example of what scientists have come to call “weather whiplash” — creates prime conditions for wildfires: The rain encourages an abundance of brush and grass, and once all that vegetation dries out, it only takes a spark and a gust of wind to fuel a deadly fire. That’s what happened in Los Angeles County this week, when a fierce windstorm fueled the Palisades and Eaton fires, which as of Wednesday night had killed at least five people, destroyed more than 2,000 buildings, and forced tens of thousands of people to evacuate their homes.
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