California Wildfires Followed by Heavy Rain, Threatening Mudslides

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2025-01-28

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Wildfires in Los Angeles County and Ventura County, California, have been burning for days but are finally being eased by much-needed rainfall. However, authorities are warning residents to remain vigilant for threats from hazardous debris, toxic ash, and mudslides. The National Weather Service issued a flood advisory from 4 PM on the 27th to 4 PM on the 28th (Pacific Time), covering areas affected by the fires, including "burn scar" regions. The advisory also stated that any thunderstorms could bring "brief but heavy rainfall and gusty winds."

Rainfall is expected to range from 0.75 to 1 inch in Los Angeles and Ventura Counties, with mountain areas potentially receiving between 1.5 to 3 inches. Additionally, small hail and waterspouts could occur near coastal waters. The National Weather Service's Los Angeles office warned on social media platform X, stating: "Heavy rain in burn scar areas may cause debris flows or mudslides. Please follow local officials' instructions!"

The Centers for Disease Control and Prevention (CDC) stated that the damage from the wildfires could lead to multiple safety and health risks, including contamination from hazardous materials and chemicals. The CDC recommends that residents wear N95 masks when returning to their homes to avoid inhaling harmful particles, as well as goggles to protect eyes from ash, debris, and smoke. Additionally, they should wear long-sleeved clothing, long pants, and gloves to protect their skin. Residents are also advised not to clear hazardous debris without assistance.