(Reuters) -Firefighters deployed air tankers, bulldozers and hand crews to battle a fast-moving wildfire just west of Yosemite National Park on Sunday that suddenly and unpredictably grew into one of the largest fires of the year, forcing thousands of evacuations.
Fueled by extreme heat and tinder-dry forests and underbrush, the Oak Fire that began on Friday closed within half a mile from the town of Mariposa Pines but was still more than 10 miles (16 km) from Yosemite, famed for its giant, ancient sequoia trees.
By Sunday evening, the fire had consumed 15,603 acres, more than half the size of Paris, and was zero percent contained, according to the California Department of Forestry and Fire Protection (Cal Fire).
Ten structures were destroyed and five more damaged.
About 3,800 people were under evacuation orders, Mariposa County Sheriff Jeremy Briese told a public briefing at a crowded auditorium in the town of Mariposa, the county seat.
Cal Fire officials said they had robust firefighting teams on scene early on, but the fire progressed atypically and overran their best efforts.
The fire was moving east up into the sierra, toward the town of Mariposa Pines and in the direction of Yosemite, Justin Macomb, a Cal Fire operations section chief, told the public meeting.
“The fire quickly outflanked us. We couldn’t even attack it with the resources that we had on hand,” Macomb said. “In my career, I haven’t seen fire behavior like that.”
The cause of the fire remained under investigation.
Yosemite, about an hour’s drive from Mariposa County, is home to some of the largest and oldest sequoia trees in the world. The trees had been threatened by another wildfire earlier this month, but firefighters managed to save them.
More than two decades of drought and rising temperatures have conspired to make California more vulnerable than ever to wildfires, with the two most devastating years on record coming in 2020 and 2021, when more than 6.8 million acres burned, an area greater than the size of Rwanda.
(Reporting by Rich McKay in Atlanta and Daniel Trotta in Carlsbad, Calif.; Editing by Leslie Adler and Bradley Perrett)
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