An atmospheric river is threatening to unleash flooding rain and mudslides across Southern California, triggering evacuation warnings in Los Angeles.

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.

Winter storm warnings spanned Mono County, as well as the Sierra Nevada from Yosemite National Park to Tulare County.

The storm system is forecast to bring several months’ worth of rain to Southern California in the span of just a few days, while a flash flood threat covers the Bay Area and Northern

Cooler air will drain in Thursday night into Friday morning, dropping the snow level to about 6,500 feet, but at this point, moisture will be running out. A couple of slushy inches of snow is expected over the Tahoe summits Thursday night into Friday morning. This could be enough for chain controls and minor travel delays.

We don't have a major storm, per se. But there are several NCAA and NFL games that could have interesting weather. Here is a breakdown of the four we're watching closest.

Forecasters expect the rain to kick off in the north on Wednesday before moving south by Thursday. It brings a risk of flash flooding and landslides.

LOS ANGELES (AP) — A rare October storm pummeled Southern California with several inches of rain on Tuesday, swelling rivers, causing freeway accidents and prompting evacuations in wildfire-scarred neighborhoods where the threat of mudslides was high.