Firefighters significantly slowed the spread of a huge wildfire burning in forest near Yosemite National Park, where thousands of residents of mountain communities were still under evacuation orders Monday and smoke was spreading for hundreds of miles around.
Crews “made good headway” against the Oak Fire, according to a Sunday night incident report by the California Department of Forestry and Fire Protection, or Cal Fire. “Fire activity was not as extreme as it has been in previous days.”
More than 2,500 firefighters with aircraft support battled the blaze that erupted Friday southwest of the park near the town of Midpines in Mariposa County. Officials described “explosive fire behaviour” Saturday as flames made runs through bone-dry vegetation caused by the worst drought in decades.
By Monday morning, the blaze had consumed more than 26 square miles (67 square kilometres) of forest land, with 10 per cent containment, Cal Fire said. The cause was under investigation.
Firefighters working in steep terrain on the ground protected homes Sunday as air tankers dropped retardant on 50-foot (15-meter) flames racing along ridgetops east of the tiny community of Jerseydale. Personnel face tough conditions that include steep terrain, sweltering temperatures and low humidity, Cal Fire said.
Light winds blew embers ahead into tree branches “and because it’s so dry, it’s easy for the spot fires to get established and that’s what fuels the growth,” said Cal Fire spokesperson Natasha Fouts.
Smoke drifted about 200 miles (322 kilometres) north toward Lake Tahoe and the same distance west into the San Francisco Bay Area, pollution control officials said.
“Hazy skies may be visible and the smell of smoke is possible at high elevations,” the Bay Area Air District said on Twitter.
Evacuations were in place for over 6,000 people living across a several-mile span of the sparsely populated area in the Sierra Nevada foothills, though a handful of residents defied the orders and stayed behind, said Adrienne Freeman with the U.S. Forest Service.
“We urge people to evacuate when told,” she said.
Lynda Reynolds-Brown and her husband, Aubrey, awaited news about the fate of their home from an evacuation centre at an elementary school. They fled as ash rained down and the fire descended a hill towards their property.
“It just seemed like it was above our house and coming our way really quickly,” Reynolds-Brown told KCRA-TV.
Gov. Gavin Newsom proclaimed a state of emergency for Mariposa County due to the fire’s effects.
Flames destroyed at least 10 residential and commercial structures and damaged five others, Cal Fire said. Assessment teams were moving through mountain towns to check for additional damage, Fouts said.
Numerous roads were closed, including a stretch of State Route 140 that’s one of the main routes into Yosemite.
California has experienced increasingly larger and deadlier wildfires in recent years as climate change has made the West much warmer and drier over the past 30 years. Scientists have said weather will continue to be more extreme and wildfires more frequent, destructive and unpredictable.
Pacific Gas & Electric said on its website that more than 2,600 homes and businesses in the area had lost power as of Monday and there was no indication when it would be restored. “PG&E is unable to access the affected equipment,” the utility said as flames roared Friday.
The Oak Fire was sparked as firefighters made progress against an earlier blaze, the Washburn Fire, that burned to the edge of a grove of giant sequoias in the southernmost part of Yosemite National Park. The 7.5-square-mile (19-square-km) fire was 87 per cent contained after burning for two weeks and moving into the Sierra National Forest.
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