Rain to worsen in LA as hundreds of thousands remain without power in California – as it happened

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California is grappling with another round of strong storms this week and the dangerous potential for flash flooding, landslides, and furious winds expected to come with them.

Much like last year, when record rainfall lashed the state, the storms are attributed to atmospheric rivers (ARs), systems that have long played a role in California's precipitation levels - both for good and for bad.