Rain and snow continued to fall across areas of Southern California Monday and early Tuesday, creating headaches for evening commuters and closing many mountain roads.
Between 6 a.m. and 2 p.m., about one-third of an inch of rain fell in Riverside. Areas around downtown Los Angeles saw nearly a half inch and some mountain areas near Sepulveda Canyon saw over an inch.
The wet roads made for a difficult commute home, with most major freeways experiencing heavy traffic and long delays.
Check traffic conditions here.
A winter storm warning, indicating severe winter weather conditions, went into effect Monday morning in higher elevations including the San Gabriel mountains in both Los Angeles and Ventura counties. That warning was scheduled to expire at noon Tuesday.
As of 5:00 p.m. Monday, I-15 in Cajon Pass was under CHP escort and the road could close conditions get worse, according to CalTrans.
Chains were required on all vehicles except four-wheel drives on all routes to the San Bernardino Mountains, Wrightwood, and Idyllwild.
The County of Los Angeles Department of Public Works closed public access to all County roads within the Station Fire burn area including Angeles Forest Highway from Aliso Canyon Road to Angeles Crest Highway (SR-2), Upper Big Tujunga Cyn. Road from Angeles Forest Highway to SR-2, and Big Tujunga Cyn. Road from Vogel Flats Road to Angeles Forest Highway.
The 5 Freeway through The Grapevine, the Antelope Valley (14) Freeway, Pearblossom (138) Highway, State Routes 2 and 33, and Lockwood Valley Road were also affected by snowfall.
Four big rigs collided in the truck lane tunnel on the southbound 5 freeway, Monday night.
"Significant amounts of snow are forecast that will make travel dangerous," according to the National Weather Service. "Only travel in an emergency."
In the Antelope Valley, the warning will take effect at 10 tonight and last until noon Tuesday.
Expect eight to 14 inches on snow in the mountains. Snow accumulation will range from six to 10 inchyes in the Antelope Valley, the NWS said.
Forest rangers advised travelers to come prepared, remembering to bring extra food and water, blankets, a cell phone, flashlights, spare batteries and other provisions that would prove beneficial in a weather-related emergency.
The snow level will drop to between 2,500 and 3,000 feet Monday night, according to an NWS advisory.
LA is ahead of its normal amount of seasonal rainfall with about 2.75 cumulative inches at the USC weather station since July 1. The basin averages about 15 inches of rain per year.
The storm comes after a wind storm knocked out power and scattered debris throughout the region. Cleanup from that storm continues, which means drainage systems could become clogged with leaves and debris this week.