Rain Brings Caution as Southern California Wildfires Begin to Heal

LOS ANGELES – As rain began to fall on parts of Southern California on Sunday, scattered showers continued overnight, posing new challenges and hazards to the region. The recent wildfires, which ravaged communities, have left behind burn scars that are particularly vulnerable to mud and debris flows during periods of precipitation.

Flood Watches Issued Across Burn Areas

Flood watches were extended through Monday afternoon for burn areas around Pacific Palisades, Altadena, and Castaic Lake. According to Joe Sirard, a meteorologist for the National Weather Service in Oxnard, these areas are especially susceptible to rapid runoff from even small amounts of rain.

“These fresh burns are very susceptible to rapid runoff,” Sirard warned. “What that means is we have a fairly high danger of mud and debris flows once we get above those thresholds.”

Closed Roadways and Flood Advisories

Parts of Topanga Canyon saw mudflows on Sunday, leading to a closure of a portion of the Pacific Coast Highway in Los Angeles County. In Ventura County, a flood advisory was issued through Sunday evening. Forecasters also predicted snow in the mountains, adding another layer of complexity to the ongoing recovery efforts.

Rain’s Dual Nature: A Mixed Blessing

While the rain presents new dangers due to toxic ash runoff, it may also offer some relief to firefighters currently battling multiple wildfires. The heavy winds and dry conditions over the past week had hindered firefighting efforts, making recent moisture a welcome change.

Fires Show Progress Toward Containment

The Palisades Fire, the largest of the recent blazes, had reached 90% containment as of Sunday and had consumed thousands of homes and claimed at least 11 lives. The Eaton Fire, near Altadena, increased its containment to 98% and had claimed 16 lives.

The Hughes Fire, which ignited last week north of Los Angeles, was 95% contained. This fire caused evacuation orders or warnings for more than 50,000 people. Additionally, in San Diego County, the Border 2 Fire continued to be contained after burning through a remote area of the Otay Mountain Wilderness, near the U.S.-Mexico border.

Toxic Ash Poses Continued Threat

Even as the rain brings fresh challenges, it also brings up concerns about toxic ash in the recently burned areas. The ash is a hazardous mix of incinerated vehicles, electronics, batteries, building materials, paints, furniture, and other household items, containing chemicals like pesticides, asbestos, plastics, and lead.

Officials are urging residents to wear protective gear when cleaning up to prevent exposure. The risks of toxic ash were starkly highlighted in 2018 when the town of Montecito was ravaged by mudslides after a downpour on slope burns. That incident resulted in the damage of numerous homes and the loss of 23 lives.

Extended Drought Conditions Remain

Much of Southern California has experienced a near-record-breaking drought. The region has received less than 5% of its average rainfall for this water year, which began October 1. According to the U.S. Drought Monitor, most of Southern California remains in “extreme drought” or “severe drought.”

Precipitation and Recovery Efforts

While the rain continues, communities in Southern California are working on flood mitigation efforts, including filling sandbags for protection and installing barriers. County workers are also clearing drainage pipes and basins to prepare for the potentially destructive effects of runoff.

Looking Ahead

As the region braces for more rain and runoff, the focus remains on protecting public safety and the environment. Experts continue to emphasize the importance of remaining vigilant and adhering to protective measures, especially in recently burned areas.

For the latest updates and guidance, residents are encouraged to stay informed through official emergency management channels and local news sources.