If rain falls as forecast, this storm could result in downtown Los Angeles seeing its wettest November since 1985. Heavy rain brings the possibility of damaging flooding and landslides.

The National Weather Service said the storm should arrive by Thursday night in most areas and will remain through Saturday, with the possibility of lingering showers into Sunday.

An unusually strong storm system called an atmospheric river is dousing Southern California. More than four inches of rain fell over coastal Santa Barbara County early Friday as the storm moved south toward Los Angeles.

A multi-day atmospheric river event soaking Southern California is expected to bring several inches of rain to many locations before skies begin to clear next week. Meteorologists expect two significant rainfall events: the first began Friday morning and continues into Friday afternoon.

Southern California is bracing for heavy rain, gusty winds and cooler temperatures as a Pacific storm, fed by an atmospheric river, moves inland through the region.

An unusually strong storm system is dousing Southern California, raising concerns about rockslides and debris flows in wildfire-damaged areas.

In less than 24 hours, California experienced nearly a dozen weather and natural events - heavy rain, flooding, lightning, snow, high winds, landslides, fog, blowing dust, wildfires, a rainbow and an earthquake. And this came just one day after the aurora illuminated skies across the state and much of the nation.

Evacuation warnings are in place for parts of Southern California as an incoming storm could bring potential mudslides and debris flow to burn scar areas.