Nearly half of the lightning strikes in northern California over the past three decades occurred on days with little to no rain, sparking some of the most destructive wildfires in the state’s history
lightning
A dry thunderstorm develops just like a normal one, with a warm updraft carrying moisture to higher altitudes where it forms clouds and lightning. But if the thunderclouds form on top of a layer of hot, dry air, rain might not make it to the ground along with the lightning. “You need to have a hotter, drier, lower atmosphere,” saysDry lightning poses a special risk for wildfire because there is no rain to put out any fires started by the strikes.
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