Hundreds of firefighters battled a wildfire Monday in a mostly rural area of northern Los Angeles County, as triple-digit temperatures and low humidity raised fears that more blazes could break out.
The wildfire charred 150 acres by midafternoon. No one was injured.
Several vacant commercial buildings were burned, authorities said, but no homes were immediately threatened.
The blaze was 20 percent contained, meaning its advance was stopped in those areas by firefighters using a bulldozer or hand tools, county fire Inspector Ron Haralson said.
About 300 Los Angeles County and city firefighters joined personnel from the U.S. Forest Service to fight the fire on the ground as helicopters dropped water from the air.
Chris Freeman, a spokesman for the Los Angeles County Fire Department, said the fire was burning southeast toward Angeles National Forest. Fire officials called for some voluntary evacuations from nearby homes, he said.
The National Weather Service said a strong high-pressure system combined with offshore flow would produce hot, dry conditions today.
Onshore flow of air from the ocean was expected Wednesday, bringing cooler temperatures and higher humidity.