Firefighters battle a Sand fire covering 3,800-acres east of Sacramento, California that has destroyed 10 homes and forced more than 1,200 residents to evacuate the area, while a second fire rages in Yosemite National Park, reports the LA Times.

As of 9:30 a.m. Sunday morning, the blaze was 35% contained, said Lynne Tolmachoff, spokeswoman for the California Department of Forestry and Fire Protection. About 1,500 firefighters were fighting the fire, along with six air tankers and six water-dropping helicopters. One inmate firefighter suffered minor injuries Saturday, said Tolmachoff.

Despite the effort, the blaze may not be fully contained until August 1. If weather conditions become more favorable, the fire might be brought under control sooner, said Tolmachoff.

The fire started Friday afternoon when a vehicle drove through dry brush near San Ridge Road near California 49 and five houses were destroyed there. Farther south and east, another five homes were burned by part of the fire that “blew up” Saturday afternoon, stoked by a combination of high temperatures, low humidity and 20-mph wind gusts, said Tolmachoff.

The Red Cross has set up a shelter aiding about 1,200 people evacuated from more than 500 homes in the area, said officials.

A separate 2,100-acre fire burning out of control in Yosemite National Park has destroyed one home. The fire started at 4 p.m. Saturday near El Portal, but the cause is unknown, said Scott Gediman, a spokesman for the park. More than 400 firefighters were attacking the flames on the ground and from the air, with more expected to arrive throughout the day Sunday, said Gediman.

The fire burned one home Saturday night, and about 100 homes in the Old El Portal and La Floresta communities had been evacuated, said officials.

There is no estimate when the blaze might be brought under control, said Gediman.

“We have steep, rugged terrain and hot, dry conditions. It’s supposed to be over 100 here today. We’re working aggressively to get the fire out,” he said.

California is suffering through the worst drought on record, according to the Weather Channel.