Firefighters make progress on Orange County wildfire

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Orange County Fire Authority firefighters extinguish hot spots near homes on Silverado Canyon Road as crews battle the Silverado Fire in the Cleveland National Forest on Saturday. (Allen J. Schaben / Los Angeles Times)

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An Orange County Fire Authority helicopter takes on water from the drought-stricken Irvine Lake before making a water drop on a brush fire near homes on Silverado Canyon Road. (Allen J. Schaben / Los Angeles Times)

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A sign thanking firefighters is posted along Silverado Canyon Road as crews battle the fire in the Cleveland National Forest. (Allen J. Schaben / Los Angeles Times)

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An Orange County Fire Authority helicopter makes a water drop on a brush fire near homes on Silverado Canyon Road. (Allen J. Schaben / Los Angeles Times)

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Orange County firefighter Duke Juarez takes a break after hiking up a steep hillside in high heat while extinguishing hot spots near homes on Silverado Canyon Road as crews battle the Silverado Fire. (Allen J. Schaben / Los Angeles Times)

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An inmate firefighter hand crew hikes up a steep hillside in high heat while extinguishing hot spots in Silverado Canyon. (Allen J. Schaben / Los Angeles Times)

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An Orange County Fire helicopter makes a water drop on a brush fire in Silverado Canyon. (Allen J. Schaben / Los Angeles Times)

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Inmate crews battle the heat and the fire as they join the more than 280 firefighters battling a blaze in Silverado Canyon. (Mark Boster / Los Angeles Times)

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Hand crews douse hotspots on a steep hill in Silverado Canyon. (Mark Boster / Los Angeles Times)

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More than 280 firefighters are aided by water-dropping helicopters and fixed-wing aircraft as they battle a 1,300-acre fire in Silverado Canyon. (Mark Boster/ Los Angeles Times)

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More than 280 firefighters are aided by water dropping helicopters and fixed-wing aircraft as they battle a 1,300-acre fire in Silverado Canyon. (Mark Boster / Los Angeles Times)

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An inmate fire crew member wipes the sweat from his brow as he takes off for the fire line in Silverado Canyon. (Mark Boster / Los Angeles Times)

By Louis SahagúnStaff Writer

Sept. 14, 2014 7:35 AM PT

Firefighters say the Silverado Fire in Orange County is at least 10% contained and has slowed considerably.

Despite scorching hot temperatures Saturday, firefighters said they made solid progress on the blaze.

No structures have been damaged. Three firefighters were treated for injuries: two for heat-related problems and one for a back injury.

“It’s pretty much simmering in place,” Vickie Wright, public information officer for the Cleveland National Forest, said Saturday evening. “Right now, it’s all very positive.”

More than 800 firefighters from federal, state and county agencies worked in triple-digit heat to control the fire, which is burning in rugged, chaparral-covered, hard-to-reach terrain.

Orange County sheriff’s deputies were going door to door Saturday urging homeowners to heed a mandatory evacuation order in east Silverado Canyon.

More than 730 firefighting personnel, fixed-wing aircraft and six helicopters were assigned to the fire that continued to burn in a northeast direction, away from the estimated 217 homes in the Cleveland National Forest area marked by narrow, winding Silverado Canyon Road.

A red flag warning of fire danger remained in effect in the foothills and mountains of Ventura and Los Angeles counties as a prolonged heat wave continued across Southern California, the National Weather Service said.

Many homes in the canyon were left without electrical power after the fire charred two utility poles Friday night, Wright said.

“We had to de-energize those power lines,” she said. At least 71 homes were affected, and “they will probably remain without power for another few days,” she said.

Also on Friday night, about 30 homes were being evacuated along Silverado Canyon Road, said Brooke Duthoy, spokeswoman for the Orange County Emergency Operations Center.

Even before the evacuations were ordered, some residents had started to pack up pets and personal belongings to voluntarily evacuate.

The fire was first reported at 10:32 a.m. Friday in the Cleveland National Forest near the 30500 block of Silverado Canyon Road.