What are atmospheric rivers?
See how atmospheric rivers can lead to extreme rain, flooding and mudslides.
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What are atmospheric rivers?
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Watch: Rare tornado tosses debris near Los Angeles
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Man builds 12-foot-tall snow tunnel to get out of home
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'There it goes': California man watches helplessly as tree falls on neighbor's house
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CNN 10: The big stories of the day, explained in 10 minutes
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Nearly 10,000 under evacuation orders in California as excessive rain leads to massive flooding
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'The rain was biblical': Rain washes out key road in California
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California faces flood risk after back-to-back snowstorms
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California residents left stranded after unprecedented snowstorm
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See moment RV sinks into California river amid heavy rain
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CNN 10: The big stories of the day, explained in 10 minutes
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CNN 10: The big stories of the day, explained in 10 minutes
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More than 65 million Americans under winter weather alerts
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CNN meteorologist breaks down coast-to-coast winter storm
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Driving instructor demonstrates how to steer in the snow
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'Revolutionary' new NASA tracker will determine how dust storms impact climate change
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CNN meteorologist breaks down major coast-to-coast winter storm
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