Flames Erupt Again as Boyle Heights Warehouse Fire Enters Fourth Day

LOS ANGELES, Calif. — A massive warehouse fire in Boyle Heights entered its fourth day Saturday as flames once again erupted from the sprawling cold storage facility, prompting Los Angeles officials to declare a local state of emergency and intensify firefighting efforts.

The fire, which broke out Wednesday afternoon at a Lineage Logistics cold storage warehouse in the 1400 block of South Los Palos Street, has proven exceptionally difficult to extinguish despite continuous operations by hundreds of firefighters, heavy equipment, and water-dropping helicopters.

Just as residents in the area believed the fire was finally coming under control Saturday afternoon, thick black smoke began billowing from the building again around 4:30 p.m. as fire conditions intensified. Los Angeles County Fire Department helicopters quickly resumed multiple water-dropping missions over the structure while crews on the ground continued pouring water into the massive warehouse.

Despite four days of aggressive suppression efforts, flames could still be seen breaking through portions of the building Saturday evening.

Mayor Karen Bass issued a local emergency declaration Saturday, citing the scale and complexity of the incident. The declaration activates the city's emergency response structure, directs departments to assess damages and costs, and seeks additional state assistance for firefighting operations, environmental monitoring, cleanup efforts, and community recovery.

Officials say the warehouse's construction and contents have made the fire particularly challenging to combat.

The 500,000-square-foot facility stores approximately 85 million pounds of frozen food and operates much like an enormous industrial freezer. According to Los Angeles Fire Department Chief Jamie Moore, the building's corrugated steel walls contain extremely dense foam insulation that continues to smolder deep within the structure.

"The building is essentially a giant cooler," Moore said during a Saturday briefing.

Deep pockets of fire remain hidden beneath collapsed debris and rooftop solar panels, limiting firefighters' ability to directly access and extinguish the flames. Helicopters have spent days dropping water onto the structure while crews use heavy machinery and defensive firefighting tactics to contain the blaze.

Lineage Logistics said Saturday that it believes the fire may have originated during testing of a rooftop solar array by third-party contractors. The cause remains under investigation.

While firefighters continue battling the blaze, public health concerns remain a major focus.

Dense smoke has drifted well beyond Boyle Heights, impacting communities across Los Angeles County and prompting air quality advisories. Officials warned that fine particulate matter in the smoke can irritate the eyes, nose, throat, and lungs while worsening existing heart and respiratory conditions.

Residents under shelter-in-place recommendations were urged to remain indoors, close all doors and windows, and use air conditioning or air filtration systems whenever possible. Throughout Saturday, residents were seen watching the enormous smoke plume while wearing N95 masks and respirators.

The South Coast Air Quality Management District has extended air quality advisories as smoke continues to spread across portions of the Los Angeles Basin.

Authorities are also monitoring potential environmental and health impacts inside the warehouse itself. Officials say refrigeration systems were compromised during the fire, causing millions of pounds of stored food to begin warming and spoil.

Fire officials described the situation as evolving from a hazardous materials response into a potential biohazard concern as temperatures rise inside the facility.

Questions have also been raised about lithium-ion batteries located within the building. Officials said approximately 60 battery-powered forklifts were housed inside the warehouse, though firefighters successfully moved or isolated 56 of them in a dangerous operation that significantly reduced the risk of a battery-related fire event.

The ongoing blaze is also affecting transportation throughout the area. Dense smoke and airborne dust have reduced visibility on nearby highways, forcing drivers to slow down as smoke continues to drift across the region.

As crews prepare to enter a fifth day of operations Sunday, there is still no timeline for when the fire may finally be extinguished.

For now, the massive cold storage warehouse remains partially engulfed, with smoke visible for miles and firefighters continuing an exhausting battle against one of the most stubborn industrial fires Los Angeles has faced in recent years.