'Atmospheric river' triggers evacuations in Southern California
It's called an "atmospheric river" -- basically a river in the sky -- that could unleash catastrophic amounts of rain.
And the major storm is barreling right toward the fire-scarred regions of Southern California, with a potential to trigger flash flooding, mudslides and significant debris flow.
The heaviest rainfall is expected Wednesday afternoon through Thursday, and officials have already ordered mandatory evacuations in Santa Barbara, Ventura and Los Angeles counties.
"That's a concern when...