By james art 
The Line Fire in San Bernardino County, after burning for nearly a month, grew again, prompting more evacuations Sunday.
Residents of Seven Oaks and the Barton Flats area, including all campsites and cabins, were ordered to evacuate due to the imminent threat of fire.
“Emergency personnel are actively working in the area,” the San Bernardino County Sheriff’s Department said in an X post.
The fire, which has already consumed 40,219 acres, was still burning actively in Bear Creek Sunday and creating very smoky conditions due to dried fuels, the California Department of Forestry and Fire Protection said.
The fire started on Sept. 5 and as it raged, it threatened tens of thousands of buildings, eventually damaging at least four and destroying one, according to Cal Fire. Four firefighters have been injured since the fire started.
In early September, a reverent resident said the massive cloud caused by the fire looked apocalyptic. “It looked just like a nuclear warhead set off on the mountain,” Megan Vazquez said.
As of Sunday’s outbreak, firefighters battling to contain the blaze were 83 percent contained.
Fallsvale Elementary School announced Sunday it will close its campus Monday because of the fire.
Angelus Oaks and the Boulder Bay area of Big Bear were under evacuation warnings.
The Bear Valley Unified School District, which includes Fallsvale, announced that other campuses would remain open Monday, even though the district was aware of the heavy smoke from the fire and the concerns of families. School officials said they are consulting with local authorities and air quality experts and will continue to monitor air quality.
The latest update from Cal Fire noted that the fire has been a challenge for firefighters due to the steep mountainous terrain and crews are working to build a helipad so firefighters can be airlifted to access the area.
With temperatures reaching triple digits later this week, Cal Fire noted that humidity has continued to drop. Fortunately, forecasters did not expect strong winds to make it difficult to contain the fire.
Relative humidity in the fire area was expected to range up to 12 percent, with winds gusting to about 15 mph.
Cal Fire said it has strengthened the critical containment line and has at least 10 helicopters operating in the fire area.
Sign up for Essential California for news, features and recommendations from the LA Times and beyond delivered to your inbox six days a week.
This story originally appeared in the Los Angeles Times.