Fires burn on a hill in Livermore, California, on Thursday, August 20. California has been battling numerous wildfires as its historic drought reaches a fourth year.
The charred remains of a property is seen in Livermore on August 20.
A firefighter climbs on the side of a hill while putting out hot spots in Livermore on August 20.
Firefighter Mike Martel walks through smoke while working to clean up after a weekend fire that ravaged the Montebello Hills area near Los Angeles on Monday, August 17.
Firefighters hose down the smoldering ruins of a building that was burned by the Warm Fire north of Castaic, California, on Sunday, August 16.
A plane drops fire retardant on the Cabin Fire north of Asuza, California, on Saturday, August 15.
A crew descends a scorched mountainside in the Angeles National Forest on August 15.
A burn operation is seen during the Jerusalem Fire, near Lower Lake, California, on Friday, August 11.
Flames from a backfire operation burn through a grove of trees as firefighters try to head off the Rocky Fire on Monday, August 3, near Clearlake, California.
Firefighters look on as the Rocky Fire burns through trees on Sunday, August 2.
A Cal Fire truck is driven away from flames as the Rocky Fire burns near Clearlake on August 2.
Firefighters light backfires in an attempt to control the blaze near Clearlake on August 2.
The Rocky Fire burns near Clearlake on August 2.
Flames from the Rocky Fire burn through dry grass August 2 near Clearlake.
Large plumes of smoke rise from the Rocky Fire on Saturday, August 1.
A firefighting air tanker flies in front of the setting sun while battling the Rocky Fire on August 1.
Heat marks are visible on an air-conditioning unit at a destroyed home in Lower Lake on August 1.
Flames approach a house in Lower Lake on Friday, July 31.
Firefighters spray a hose at a fire near Lower Lake on July 31.
A firefighter prepares to douse spot fires in Lower Lake on July 31.
As the Rocky Fire approaches, goats run from their pen after firefighters freed them on July 31.
Trees and brush burn while firefighters battle the Wragg Fire near Winters, California, on Thursday, July 23. The fast-moving wildfire had scorched almost 7,000 acres in Napa and Sonoma counties, authorities said.
A firefighting aircraft drops retardant on a ridge to combat the Wragg Fire on July 23.
Flames from the Pines Fire burn on Saturday, July 18, in Wrightwood, California. The blaze was burning near Mount San Antonio, which is also called Mount Baldy for its snow-capped summit that's highly visible in Los Angeles.
Slow-moving traffic fills the northbound lanes of Interstate 215 near Victorville, California, on Friday, July 17. The traffic was linked to the North Fire, which caused people to abandon their vehicles and flee as flames jumped the freeway.
The North Fire burns July 17 near Interstate 15 in the Cajon Pass in San Bernardino County.
Firefighters start a backfire along Baldy Mesa Road late on July 17.
Smoke from a wildfire rises above Interstate 15 near San Bernardino, California, on July 17.
The scorched remains of a truck destroyed by the North Fire are towed away near Victorville on July 17.
A helicopter prepares to drop water over a fire near Oak Hills, California, on July 17.
Flames rise over a cluster of homes in Oak Hills on July 17.