Southern California Weather: Drivers on alert for hazardous road conditions across Grapevine as more rain and snow expected | Bot To News

GRAPEVINE, Calif. (KABC) — The National Weather Service has warned of a cold “atmospheric bowling ball” that will deliver a “pump” of snow as it crosses the Grapevine overnight into Monday, and drivers are on high alert.

Traffic was moving slowly through Castaic Sunday afternoon, but the California Highway Patrol continues to warn drivers, saying officers could close roads if heavy snow starts to fall.

Steady rain fell across Southern California with minor flooding, mud and debris flows closing some roads.

The Los Angeles County Department of Public Works reported Sunday morning that Lake Hughes Road, between Pine Canyon and Dry Gulch roads in Lake Hughes, was closed due to mud and debris on the road. The department was asking the public to avoid the area and use alternate routes.

The Pomona Police Department reported flooding in the underpass on First Street, with several streets in the area closed or affected by flooding, including South Reservoir Street, South Towne Avenue, East End Street, Garey Avenue and White Avenue.

Heavy rain was falling in the northern San Fernando Valley, where CHP was at the scene of a large truck accident on northbound I-5 at Sheldon Street in the Sun Valley area. The vehicles involved in the accident were cleared around noon, but both sides of the freeway were flooded by 12:30 p.m. on the south side with the left lane open.

Caltrans had their pumps on the scene trying to clear the water.

In Orange, firefighters and paramedics pulled a man from the river during a quick water rescue in the area of ​​the Santa Ana River and Garden Grove Boulevard. He was taken to a hospital for follow-up care.

“We got significant rain over our mountains last night and are beginning to see a response in our major local rivers. Not enough to reach monitoring or flood level, but finally seeing some flow,” the Los Angeles National Weather Service office tweeted. Angeles at 8:33 am

Shortly after 9 a.m., the NWS said Doppler radar indicated heavy rain due to thunderstorms in southern Orange County, with minor flooding expected to begin in Irvine, Mission Viejo, Rancho Santa Margarita, San Clemente, Laguna Beach, Dana Point and Laguna Niguel.

Forecasters said heavy downpours and small hail were possible in some areas through Sunday night.

Angeles National Forest said trails in the forest could be very slippery and/or closed due to rain or snow. Snow chain or tire requirements may be in effect.

The storm is expected to pass through the area on Sunday night. Some persistent showers will be possible Monday morning, mainly in mountainous areas, forecasters said.

City News Service, Inc. contributed to this report.

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