Firefighters battling a blaze in a Southern California canyon made some progress toward containment but were up against more high winds and low humidity on Friday, which threatened to stoke the flames as they tore through wooded hillsides.
The Bond Fire, which had forced some 25,000 people in Orange County to evacuate as of Friday, broke out around 10 pm on Wednesday night on the street for which it is named and quickly engulfed Silverado Canyon, egged on by strong Santa Ana winds.
In a Friday morning bulletin, the National Weather Service said a red flag warning for high gusty winds was in effect until 10 pm Saturday for the inland portion of Orange County, where officials said the Bond Fire still held claim to some 6,400 acres. The strongest winds were expected Friday morning.
Two firefighters involved in the effort were injured and transported to a local hospital for further treatment, the Orange County Fire Authority said on Twitter on Thursday.
The blaze was 10% contained as of Thursday night.
Woodsy Silverado Canyon, miles from Southern California's suburban sprawl up a single winding road, is home to an eclectic mix of residents including artists, horse owners and ranchers.
"I got a text message from my neighbor saying, 'Are you okay? Your street is on fire,'" Giovanna Gibson, 60, who lives on Bond Street, told Reuters on Thursday. She was at her small business office near John Wayne Airport at the time.
Gibson said she would not have received that warning had she been home in Silverado Canyon, which has little cell phone reception.
Neighbors told Gibson the blaze ignited when the owners of a home without power tried to start their generator and it exploded.
Fire officials have not yet said what they believe to be the cause of the fire.
Since the start of the year, wildfires have scorched more than 6,500 square miles (17,000 square km) of California land, according to the California Department of Forestry and Fire Protection.
The yearly land area burned in the western United States has grown eight times larger in less than four decades, the US Forest Service Rocky Mountain Research Station said in research published last month.