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Northern Nevada & Sierra prepare for 1st atmospheric river storm of season

11-1-17 atmospheric river.png

You likely remember the term 'atmospheric river' -- the storms that caused major flooding in northern Nevada last year -- but what exactly IS an atmospheric river?

Atmospheric rivers get their name because when looking at them on satellite imagery, they look like large rivers in the sky. One storm can contain 15 times the amount of moisture as the mouth of the Mississippi River.

They're more common than you might think. At any given time, there are 3-5 atmospheric rivers in each hemisphere

But the ones that make landfall, they provide 30-50 percent of our annual precipitation.

WATCH to learn more.

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