A massive fire erupted Wednesday afternoon at a nearly 500,000-square-foot cold storage warehouse in Boyle Heights, sending towering plumes of black smoke across Los Angeles and triggering a large-scale emergency response. The blaze began shortly after 2:30 p.m. at the Lineage cold storage facility on South Los Palos Street, where firefighters encountered flames spreading across a roof covered with solar panels.
The thick smoke quickly became visible across much of the city, drawing attention from residents and commuters. The Los Angeles Fire Department deployed significant resources to battle the fire as emergency alerts warned nearby communities about dangerous air quality and advised people to remain indoors and avoid travel near the scene. Due to the size of the warehouse and the complexity of the incident, officials described it as one of the largest industrial fires in Los Angeles this year.
Shelter-in-Place Orders Issued Amid Hazardous Conditions
City officials issued shelter-in-place orders for neighborhoods surrounding the warehouse because of concerns over heavy smoke and the possible release of hazardous chemicals. Residents were instructed to stay indoors, close all windows and doors, and switch off air-conditioning systems until further notice.
Emergency officials warned that breathing the potentially contaminated air could pose health risks, particularly for individuals with respiratory conditions. Fire crews became increasingly concerned after an ammonia line inside the facility was compromised, creating additional hazards due to the chemical's toxic and flammable properties.
Authorities monitored air quality throughout the afternoon and evening while maintaining safety zones around the warehouse. The shelter-in-place area covered several blocks as emergency personnel worked to minimize public exposure to smoke and chemical releases.
Firefighters Battle Challenging Conditions
More than 100 firefighters from city and county agencies responded to the incident, working under difficult and dangerous conditions to prevent the fire from spreading. The ammonia leak forced crews to withdraw from rooftop operations for safety reasons, leading helicopters to conduct water drops while ground teams continued containment efforts.
Officials also highlighted the additional risks posed by rooftop solar panels and battery systems, which can complicate firefighting operations due to thermal runaway and the release of toxic smoke. Specialized response teams coordinated closely to manage the evolving situation while prioritizing firefighter safety.
By evening, authorities reported significant progress in containing the blaze, although extensive damage to the roof and parts of the building remained visible.
Investigation Underway as Recovery Begins
Investigators have not yet determined the cause of the fire and will begin examining the scene once conditions are considered safe. Lineage, which operates the facility as a temperature-controlled storage warehouse, had not issued a public statement while emergency operations continued.
Residents and business owners throughout Boyle Heights watched heavy smoke rise above the neighborhood as officials continued monitoring structural stability and air quality. Fire crews warned they could remain at the scene for an extended period to extinguish remaining hot spots and assess damage.
The incident underscores the challenges posed by large industrial facilities and the importance of coordinated emergency response efforts. Cleanup operations and investigations are expected to continue as authorities seek to determine what caused one of Los Angeles' largest warehouse fires in recent years.
