The La Tuna Fire has now became the largest blaze by acreage in Los Angeles city history.
And the apocalyptic fire looks like a giant volcanic ash cloud.
Fueled by hot conditions and shifting winds, a brush fire exploded across the eastern San Fernando Valley on Saturday, consuming thousands of acres while prompting hundreds of mandatory evacuations.
Parts of Burbank, Glendale and Sunland-Tujunga were under evacuation orders for the La Tuna Fire. The Burbank evacuations were lifted by 10 p.m. Saturday, but the others remained in place.
Officials believe the La Tuna Fire is the largest blaze by acreage in Los Angeles city history.
About 730 homes were evacuated: 300 in Burbank, 250 in Glendale and 180 in Los Angeles.
A smoke advisory was issued for the San Gabriel Valley to the San Fernando Valley and Glendale as plumes billowed into the air. Residents were urged to limit outdoor activities.
Los Angeles Mayor Eric Garcetti signed a declaration of emergency for the fire Saturday.
At one point the fire was estimated at 8,000 acres, but later Saturday night fire officials issued a revised estimate of 5,800 acres.
About 800 firefighters from multiple agencies were fighting the flames Saturday night and the battle was expected to go strong through the evening and well into Sunday.
The blaze was first reported Friday around 1:30 p.m. in Sun Valley.
The cause of the La Tuna Fire around Los Angeles was unknown.