The NWS urges residents in the affected areas to monitor local forecasts "and be alert for possible Flood Warnings."

A catastrophic river has started to hit the state of California, which will lead to days of heavy rain, strong wind gusts, and potentially feet of snow as early as next week.

Around 23 million people across California are covered by flood notices Friday as Los Angeles braces for what could be a month's worth of rain in a day.

A strong atmospheric river is pummeling Southern California, bringing a widespread risk of floods and prompting evacuations.

Over 22 million Americans in Southern California are under a flood watch as a West Coast storm could slam burn scar areas, bringing potential mudslides and debris flows.

The second part of the storm is expected to start Friday night,​ with the main intensity over Los Angeles and Ventura counties.

A powerful atmospheric river battered California over the weekend of November 13–17, 2025, unleashing historic rainfall that shattered decades-old records and exposed the state's vulnerability to intensifying extreme weather.

Though conditions began to improve on Nov. 16, forecasters warned that another storm system is expected to bring more rain on Nov. 17 and 18.