A powerful winter storm has significantly impacted Southern California during the Christmas holiday, unleashing heavy rain and posing serious flooding risks. The National Weather Service (NWS) has issued multiple warnings and advisories, predicting that the atmospheric system will deliver between 3 to 6 inches of rain in coastal and valley regions, while foothills and mountains may see between 5 to 11 inches.
Special attention is being focused on burn scar areas, which are particularly vulnerable to flooding, mudslides, and debris flows. The NWS has declared a flood watch for much of Southern California, extending through Friday afternoon. Rainfall rates are expected to exceed 1 inch per hour during peak storm hours, leading to flash flooding in some areas. As a result, a flash flood warning is in effect for southwestern parts of Los Angeles County and southeastern parts of Ventura County, encompassing cities like Thousand Oaks, Simi Valley, and Malibu.
Initially set to expire at noon, the flash flood warning has been extended due to reports of significant rainfall across the region. According to meteorologist Ariel Cohen, "This storm is evolving exactly as we have been talking about. We continue to encourage everyone to take these warnings seriously, as the cumulative effects of the rain will lead to increasingly dangerous conditions throughout the holiday period."
The NWS has outlined the expected peak rainfall times for various counties:
Santa Barbara County: 3 to 7 a.m. Ventura County: 5 a.m. to 1 p.m. Los Angeles County: 9 a.m. to 4 p.m.In response to the storm, CBS LA has issued a Next Weather Alert through Christmas Day for all Southern California communities, with a Next Weather Watch being considered for Friday, should conditions persist.
Evacuation orders are in place for several burn scar areas, including the Palisades, Eaton, Franklin, Kenneth, Agua, Owen, and Agua fire zones. Los Angeles County Sheriff Robert Luna cautioned, "If you decide to stay in your home in an evacuated area, it could be difficult to leave once the storm begins." Additionally, the Orange County Sheriff’s Department has mandated evacuations for Trabuco Creek, Bell Canyon, and Hot Springs Canyon near the Airport Fire burn scar.
Officials have set up a shelter for residents in evacuation zones at the Foothill Ranch Library Program Annex. The city of Los Angeles has also issued an Evacuation Warning for areas impacted by the Hurst and Sunset Fires, remaining in effect until 11 p.m. on Thursday. Warnings have also been issued in San Bernardino County for communities like Forest Falls and Seven Oaks, alerting residents to potential mud and debris flows from the heavy rainfall.
The ongoing storm has caused substantial disruptions, leading to the closure of several amusement parks, including Six Flags Magic Mountain and Knott's Berry Farm, on Christmas Eve. The LA Zoo will also remain closed on Wednesday due to safety concerns. Road closures have been implemented by LA County Public Works and Caltrans to mitigate storm-related risks.
Malibu Canyon Road: Soft closure for emergency vehicles only. Tuna Canyon Road: Hard closure. Topanga Canyon Boulevard: Fully closed. 5 Freeway in Sun Valley: All lanes closed due to flooding.The City of Malibu Public Safety Department has announced multiple road closures due to flooding, impacting areas like Topanga and Malibu Canyons.
In light of the severe winter storm, California Governor Gavin Newsom has declared a state of emergency for several counties, including Los Angeles, Orange, Riverside, and San Bernardino. This declaration facilitates rapid mobilization of state resources to support local governments under the California Disaster Assistance Act.
Governor Newsom stated, "California is acting early and decisively to do all we can to get ahead of dangerous winter storms." The state has pre-positioned emergency resources, including fire engines, swiftwater rescue teams, and personnel to assist local authorities.
Mayor Karen Bass has urged residents to remain indoors and avoid unnecessary travel, emphasizing the importance of safety during this storm. The Los Angeles Department of Water and Power is actively working to restore power to affected areas, while emergency response teams are addressing incidents across the city.
As the storm progresses, rainfall totals across Southern California have been substantial, with many areas experiencing significant accumulation over the past 24 hours. Residents are encouraged to stay informed about weather developments, adhere to evacuation orders, and prioritize safety during this hazardous period.
In summary, Southern California is facing a powerful winter storm that poses serious flooding risks and necessitates residents to stay vigilant and prepared. With multiple warnings in effect and evacuation orders issued, it is crucial to follow official guidance and take necessary precautions to ensure personal safety during this challenging weather event.