SoCal will be dealing with the leftovers of a December storm today that brought heavy rain and flooding to parts of Santa Barbara and San Luis Opispo earlier this week.

We will see bands of rain across the southland through Friday evening. 

What You Need To Know

  • Periods of rain through Friday evening

  • A Flood Watch is in effect for SoCal cities from the coast to the mountains through Friday

  • A Winter Weather Advisory remains in effect until Saturday morning for San Bernardino and Riverside County mountains

Heavy rain, wet snow, flooding, rockslides plus mud and debris flows are all threats we face from a second slow-moving storm system making its way across our region.

We can't rule out a few thunderstorms, either. Heavy downpours, strong bursts of wind, hail and flooding are all possible. 

Those who live near burn scars are urged to stay alert and prepare to evacuate should flooding occur. Be alert for any Flash Flood Warnings that may be issued for your area, especially during the overnight hours.

The following National Weather Service (NWS) alerts remain in effect:

  • Winter Storm Watch for parts of the mountains
  • Flood Watches from the mountains to the coast

A warm storm will lead to wet snow in the mountains

This storm will draw from a moisture plume of warmer air, unlike a typical winter storm, which comes from the Gulf of Alaska and brings very cold air to the region. 

Computer models initially showed wet snow accumulations, ranging from 6 to 18 inches, which could fall above 7,000 feet. A place like Big Bear Lake may receive all rain, while the higher peaks of Big Bear Mountain Resort may receive a mix of rain and snow.  

Now, the short-range models are estimating lower snow accumulations of 2 to 6 inches above 7,500 feet. 

The snow level could lower to 6,000 feet Saturday night, but there may no longer be enough moisture in the area to convert to snow. 

Travel will be dangerous at times through early Friday, especially through the mountains. 

If you must drive out of town, particularly Thursday night, keep an extra flashlight, blankets, food and water in your vehicle in case of an emergency. The California Highway Patrol may have to close down part of the freeway until it's safe to pass. 

Stay on top of the latest road conditions for the state by calling 5-1-1.

Our team of meteorologists dives deep into the science of weather and breaks down timely weather data and information. To view more weather and climate stories, check out our weather blogs section.