Los Angeles could see showers on Tuesday after four days of rain, with more rain likely on Thursday and Friday.
The National Weather Service said 20% to 30% of showers and thunderstorms will be expected across much of Los Angeles County on Tuesday, although mostly sunny skies are expected. A slight risk of thunderstorms will remain as Monday’s cold front brings unstable air.
The cold front will move out of Los Angeles by Tuesday, but the cold core of the low pressure system remains. “This will bring enough instability to the area to cause a low chance of thunderstorm development,” the Oxnard weather service said.
A recent storm caused temperatures to drop. While temperatures reached the 60s along the Los Angeles coast and in the San Gabriel Valley on Monday, it would be “difficult to get out of the 50s” in much of Los Angeles County’s coastal areas and valleys due to late rain, the weather service said.
Wednesday will be sunny, but another storm is expected to move into Southern California on Thursday and continue into Friday.
Thursday’s storm is expected to drop rainfall amounts from 0.25 inches to 0.75 inches. As of 9 p.m. Monday, 0.74 inches of rain had fallen in downtown Los Angeles in the 24 hours. This follows a weekend of storms that began Friday and dumped 2.68 inches of rain on the downtown area.
In the 24 hours ending at 9 p.m. Monday, 1.61 inches of rain fell in Porter Ranch; La Canada Flintridge, 1.5; Northridge, 1.43; Bel Air, 1.21; Castaic, 1.15; Van Nuys, 1.12; and Beverly Hills, 1.11.
Warm Springs Camp, located in the mountains overlooking the Santa Clarita Valley, had received an 18-hour rainfall total of 2.5 inches as of Monday night.
So far, the storm has caused some chaos but no serious or life-threatening damage in recently burned areas.
As of late Monday night, landslides and flooding were reported on multiple roads. Flooding also hit Highway 5 near Highway 14 between Sylmar and Santa Clarita on Monday afternoon, as well as the exit ramp at Highway 91 at Kamenita Road. The California Highway Patrol said there was flooding on the on-ramp to Highway 10 in El Monte and Highway 605 at the southern boundary of Baldwin Park.
The mountain road was severely damaged. On Angeles Crest Highway, which winds through the San Gabriel Mountains, a motorist became “stuck in mud and rocks” in the northbound lane, while the southbound lane was completely blocked by multiple landslides, according to a report filed by the National Weather Service. The debris was too heavy for snowplows to remove.
Near Highway 101 in Hidden Hills, Round Meadow Road near Mureau Road was flooded and many vehicles skidded.
Rockslides or mudslides were also seen Monday afternoon and evening on San Francisco Canyon Road, a mountain route that connects Santa Clarita to the Antelope Valley; on a section of Kanan Dume Road, which leads from Malibu to the Santa Monica Mountains; and on the Mulholland Highway south of Calabasas.
Snowfall levels were around 7,000 feet on Monday, but were expected to drop to 5,000 feet by Tuesday. Officials issued a winter weather warning for the eastern San Gabriel Mountains and northern Ventura County mountains until Tuesday night. About 2 to 5 inches of snow could fall on the mountains.
“As for the Grapevine area, snow is possible Tuesday morning as snow levels decrease,” the weather service said. Grapevine is a key travel corridor on Highway 5 that connects Los Angeles and Santa Clarita to the Central Valley and San Francisco Bay Area.
The highest point on the Grapevine section is Tejon Pass, which has an elevation of 4,144 feet. At that location, “some non-accumulating snow is possible,” the weather service said.
