California is preparing for a deluge of rain. Two powerful storm depressions will dump liters of water in the region during their passage between today and next Tuesday. People therefore fear flooding and mud nuisance. The fact that this storm depression brings so much rain is due to the so-called atmospheric rivers. But what exactly are these? What are the expectations for the region in the coming days? And why are people talking about the ominous ARkstorm on social media?
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