Another Storm Bringing Rain, Snow To SoCal: Latest Timeline

SAN DIEGO, CA — Another storm is expected to hit rain-drenched Southern California before calmer weather returns ahead of the Thanksgiving holiday.

The final storm in a series is slated to arrive to the Southland, bringing widespread rain, along with mountain snow Thursday into Friday, according to the National Weather Forecast. The storm will raise the risk of flooding and landslides in areas already soaked from record-breaking rain totals, following an atmospheric river system that slammed much of the Golden State over the weekend.

"Persistent downpours are expected from Los Angeles to San Diego, increasing the risk of flash flooding," AccuWeather reported. "Localized mudslides remain a concern — especially in recent burn scar areas where saturated soils increase the risk of debris flows and road washouts. Urban flooding could disrupt travel in low-lying or poorly drained areas."

The latest storm is expected to bring light to moderate rain to the Southland, with the heaviest Thursday night into Friday morning in Los Angeles County, according to the National Weather Service.

Periods of rain are expected Thursday afternoon, possibly as early as 1 p.m., according to hourly forecasts.

"The rain is arriving a couple hours earlier than expected but otherwise more or less on track," NWS Los Angeles forecasters wrote Thursday. "Rain rates with this initial round are expected to be under a quarter inch per hour and in most cases under a tenth of an inch."

Heavy rain is expected Thursday night as well as possible thunderstorms . There's even a remote risk for a tornado.

"Thunderstorms and/or enhanced cells will become more likely later this afternoon through most of the day on Friday," forecasters wrote. "Isolated heavy downpours and wind gusts up to 50 mph are possible with any of these storms. Lightning could affect coastal areas and beaches. There is a remote risk for a tornado, mainly over Los Angeles County Thursday night."

Further south, light rainfall will begin to move in as early as late Thursday morning, from north to south, spreading across San Diego County Thursday, according to the National Weather Service.

Rain could begin as early as 2 p.m. in Orange County and the Inland Empire, according to hourly forecasts. The rain is expected to reach San Diego late Thursday afternoon, possibly as early as 4 p.m.

"Up to an inch of rainfall possible for coast/valleys, higher in the foothills and mountains," NWS San Diego forecasters wrote Thursday.

"The most widespread and heaviest precipitation is expected with the cold front this evening with showers continuing overnight," forecasters added. "There is also a slight chance of thunderstorms for tonight."

The storm will not only bring another round of rainfall, but also snow in the local mountains.

Snow levels are expected to remain above 6,000 feet, so there should not be any implications for the Grapevine stretch of the 5 Freeway, but several inches of snow are possible at higher elevations, according to the National Weather Service.

A winter storm watch will be in effect from Thursday afternoon through Sunday morning for the San Gabriel Mountains and the Antelope Valley Freeway corridor.

Temperatures will remain cool all week, consistent with traditional November weather. The forecast shows clear skies for Thanksgiving week.

"The slow moving system will allow precipitation to linger into Saturday," forecasters wrote. "Drier weather with a very slow warming trend sets in for the end of the weekend into early next week, warming to near normal by Wednesday."