Massive Los Angeles warehouse fire triggers shelter-in-place order
Smoke from a burning Boyle Heights cold-storage warehouse sent dozens out of their homes and kept sensitive residents indoors as crews checked for ammonia and air contamination.

Smoke from a huge Boyle Heights warehouse fire turned a industrial block near downtown Los Angeles into a public health zone, with officials telling nearby residents to shelter in place as crews checked for hazardous air and a compromised ammonia line. The fire was reported around 2:30 p.m. Wednesday at 1400 S. Los Palos St., and the plume was visible across much of the city.
The Los Angeles Fire Department told people to close windows, doors and vents, turn off air conditioning, and bring people and pets indoors while firefighters worked the roof. About 70 people were evacuated from two streets as the blaze burned on the roof of a nearly 491,000-square-foot Lineage cold food storage facility, where solar panels also caught fire. Three water-dropping helicopters joined ladder trucks on the response, an unusual step for a building fire but one that helped suppress the flames and keep them from spreading deeper into the structure.

Public health concerns centered on what the fire could release, not just on the smoke itself. Fire officials said an ammonia line was compromised, triggering hazmat concerns in a building used for cold storage, where ammonia is commonly part of refrigeration systems. The leak was later contained and the immediate danger had dissipated, but crews continued to assess the interior, monitor air quality and watch runoff for contamination. The shelter-in-place order was lifted around 8:45 p.m., though smoke advisories remained in effect for people with sensitive health issues.

The Los Angeles Police Department issued a citywide tactical alert to increase available officers as crews worked around South Los Palos Street and nearby corridors including Soto Street, Indiana Street and Washington Boulevard, with traffic pressure extending toward the 101 Freeway and across neighborhoods in Boyle Heights, Downtown Los Angeles and the San Gabriel Valley. The response underscored how a single warehouse blaze can ripple outward through streets, transit and emergency services long after the first flames are knocked down.

The same building caught fire in August 2024, when firefighters also responded to solar panel flames on the roof. That repetition points to a larger urban risk question for Los Angeles: as warehouses, refrigeration facilities and rooftop solar arrays crowd industrial neighborhoods, fires at these sites increasingly become neighborhood health emergencies, especially for residents already living with heavy traffic, freight activity and other chronic pollution burdens.
This article was produced by Prism’s automated news system from verified source data, official records, and press releases, then run through automated quality and moderation checks before publishing. The system is built and supervised by the people who set the standards it runs under. Read our full AI policy.
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