Story highlights Thousands of firefighters battle California wildfires

Drought and lightning are fueling the wildfires

(CNN) Firefighters in steep terrain and rugged conditions in California are fighting nearly two dozen wildfires that have torched more than 134,000 acres, according to state fire officials.

That's nearly three times the state's 5-year wildfire average of 48,153 acres for this time of year, according to statistics posted by the California Department of Forestry and Fire Protection, or Cal Fire.

At 60,000 acres, the Rocky Fire is the largest ongoing blaze. It's led to evacuation orders for more than 13,000 people as it feeds on drought-parched vegetation that hasn't seen fire in many years, according to Cal Fire.

Photos: California wildfires Photos: California wildfires 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. Hide Caption 1 of 31 Photos: California wildfires The charred remains of a property is seen in Livermore on August 20. Hide Caption 2 of 31 Photos: California wildfires A firefighter climbs on the side of a hill while putting out hot spots in Livermore on August 20. Hide Caption 3 of 31 Photos: California wildfires 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. Hide Caption 4 of 31 Photos: California wildfires Firefighters hose down the smoldering ruins of a building that was burned by the Warm Fire north of Castaic, California, on Sunday, August 16. Hide Caption 5 of 31 Photos: California wildfires A plane drops fire retardant on the Cabin Fire north of Asuza, California, on Saturday, August 15. Hide Caption 6 of 31 Photos: California wildfires A crew descends a scorched mountainside in the Angeles National Forest on August 15. Hide Caption 7 of 31 Photos: California wildfires A burn operation is seen during the Jerusalem Fire, near Lower Lake, California, on Friday, August 11. Hide Caption 8 of 31 Photos: California wildfires 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. Hide Caption 9 of 31 Photos: California wildfires Firefighters look on as the Rocky Fire burns through trees on Sunday, August 2. Hide Caption 10 of 31 Photos: California wildfires A Cal Fire truck is driven away from flames as the Rocky Fire burns near Clearlake on August 2. Hide Caption 11 of 31 Photos: California wildfires Firefighters light backfires in an attempt to control the blaze near Clearlake on August 2. Hide Caption 12 of 31 Photos: California wildfires The Rocky Fire burns near Clearlake on August 2. Hide Caption 13 of 31 Photos: California wildfires Flames from the Rocky Fire burn through dry grass August 2 near Clearlake. Hide Caption 14 of 31 Photos: California wildfires Large plumes of smoke rise from the Rocky Fire on Saturday, August 1. Hide Caption 15 of 31 Photos: California wildfires A firefighting air tanker flies in front of the setting sun while battling the Rocky Fire on August 1. Hide Caption 16 of 31 Photos: California wildfires Heat marks are visible on an air-conditioning unit at a destroyed home in Lower Lake on August 1. Hide Caption 17 of 31 Photos: California wildfires Flames approach a house in Lower Lake on Friday, July 31. Hide Caption 18 of 31 Photos: California wildfires Firefighters spray a hose at a fire near Lower Lake on July 31. Hide Caption 19 of 31 Photos: California wildfires A firefighter prepares to douse spot fires in Lower Lake on July 31. Hide Caption 20 of 31 Photos: California wildfires As the Rocky Fire approaches, goats run from their pen after firefighters freed them on July 31. Hide Caption 21 of 31 Photos: California wildfires 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. Hide Caption 22 of 31 Photos: California wildfires A firefighting aircraft drops retardant on a ridge to combat the Wragg Fire on July 23. Hide Caption 23 of 31 Photos: California wildfires 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. Hide Caption 24 of 31 Photos: California wildfires 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. Hide Caption 25 of 31 Photos: California wildfires The North Fire burns July 17 near Interstate 15 in the Cajon Pass in San Bernardino County. Hide Caption 26 of 31 Photos: California wildfires Firefighters start a backfire along Baldy Mesa Road late on July 17. Hide Caption 27 of 31 Photos: California wildfires Smoke from a wildfire rises above Interstate 15 near San Bernardino, California, on July 17. Hide Caption 28 of 31 Photos: California wildfires The scorched remains of a truck destroyed by the North Fire are towed away near Victorville on July 17. Hide Caption 29 of 31 Photos: California wildfires A helicopter prepares to drop water over a fire near Oak Hills, California, on July 17. Hide Caption 30 of 31 Photos: California wildfires Flames rise over a cluster of homes in Oak Hills on July 17. Hide Caption 31 of 31

The fire, which is in Lake, Yolo and Colusa counties northwest of Sacramento, was 12% contained, the agency said.

"This has been a very fast-moving wildfire, with the dry conditions and the weather not really cooperating with us over the past week," Cal Fire spokesman Daniel Berlant told CNN affiliate KCRA