A huge wildfire churned through high desert wilderness north of Los Angeles on Friday, destroying a few buildings and forcing people from about 2,000 homes. Most of the displaced residents were allowed to return as the threat eased.

One single-family home and three mobile home residences were destroyed, another house had roof damage and various other outbuildings and garages were lost in the horse country region, authorities said.

A huge DC-10 jumbo jet tanker arrived on the scene after sunrise Friday to drop fire retardant on the 12 1/2-square-mile blaze. Containment was estimated at only 5 percent.

The blaze erupted Thursday afternoon and prompted the evacuation of about 2,000 Antelope Valley homes, but most had returned by early Friday, Los Angeles County fire and sheriff’s officials said.

Flames up to 50 feet high threatened the communities of Leona Valley, Anaverde and Ranch Vista but cool, windless overnight weather helped ease the threat.

On Thursday, the fire stopped at the California Aqueduct, which runs along foothills of the San Gabriel Mountains. The concrete channel acted as a natural firebreak, fire Inspector Matt Levesque said.

“That fire burned right up to the homes (but there is) no more fuel for it to burn,” he said.

Aircraft and about 500 firefighters intended to concentrate on protecting the densely populated Palmdale area a few miles away and a cluster of power transmission lines that provide electricity to much of Southern California, Bryant said.

A forecast of gusty afternoon winds and a high of 98 degrees were expected to pose a challenge for crews.

The fire broke out near a state highway that snakes through the San Gabriel Mountains, connecting Los Angeles to the high desert. Angeles National Forest lands lie on either side.

Bryant said fire investigators were focusing on some workers who were trying to remove a tire rim by hammering on bolts. He said the workers were cooperating with the investigation.

Farther north in Kern County, good weather helped firefighters build containment lines around two wildfires that destroyed homes in remote mountain communities earlier in the week.

A 2 1/2-square-mile blaze near Tehachapi on the western edge of the Mojave Desert was 46 percent contained after burning about 30 homes and other structures in a scattered community called Old West Ranch.

The community nonetheless remained evacuated, affecting about 150 people, said John Buchanan, spokesman for the California Department of Forestry and Fire Protection.

The blaze erupted Tuesday afternoon and rapidly swept through an area where Kern County fire authorities say there is no history of any fires on record, meaning vegetation hadn’t burned there in more than a century.

To the north, a fire that destroyed eight residences and a few outbuildings as it spread across about 26 square miles of the Sequoia National Forest in the Sierra Nevada was 55 percent contained, authorities said.

Groups pushing for robust Hispanic participation in the 2010 census have announced a campaign to reach that hard-to-count demographic through its smart-phone-toting youngsters.

The “Be Counted, Represent” campaign was announced Wednesday at a press conference in Los Angeles.

It offers music downloads and a chance at concert tickets to cell phone users who share their e-mail addresses and phone numbers with organizers and forward information about the census to their friends.

Organizers hope the pro-census messages will zip throughout the social networks of youngsters who can persuade their parents to fill out and return their census forms.

The messages will stress that undercounted areas risk losing funding for transit, infrastructure and other needs.