Tall flames rise behind a firefighting inmate hand crew member at the Butte Fire are seen on September 13, 2015 near San Andreas, California. California governor Jerry Brown has declared a state of emergency in Amador and Calaveras counties where the 100-square-mile wildfire has burned scores of structures so far and is threatening 6,400 in the historic Gold Country of the Sierra Nevada foothills. (Photo by David McNew/Getty Images)





A photo made available 15 September 2015 of a massive blaze at a home following the “Valley Fire” near Middletown, California, USA 13 September 2015. The fire has consumed over 60,000 acres along with hundreds of homes and continues to spread. (Photo by Alan Simmons/EPA)





Mendocino County firefighters rest after defending homes in Hidden Valley Lake, Sunday, September 13, 2015, in Lake County, Calif. Two of California's fastest-burning wildfires in decades overtook several Northern California towns, destroying homes and sending residents fleeing. (Photo by Kent Porter/The Press Democrat via AP Photo)





A firefighter watches a tree burn as the Butte fire rages near San Andreas, California September 12, 2015. (Photo by Noah Berger/Reuters)





Flames from a backfire burn through dry vegetation as firefighters battle the Butte fire near San Andreas, California September 12, 2015. (Photo by Noah Berger/Reuters)





Firefighters light a backfire while battling the Butte fire near San Andreas, California September 12, 2015. (Photo by Noah Berger/Reuters)





Flames from a backfire tower over a fire engine battling the Butte fire near San Andreas, California September 12, 2015. (Photo by Noah Berger/Reuters)





Burned out remains of a vehicle and swing set scorched by the Valley Fire line Jefferson St. in Middletown, California September 13, 2015. (Photo by Noah Berger/Reuters)





A firefighter sprays water on a backfire while battling the Butte fire near San Andreas, California September 12, 2015. (Photo by Noah Berger/Reuters)





A firefighter sprays water on a backfire while battling the Butte fire near San Andreas, California September 12, 2015. (Photo by Noah Berger/Reuters)





A firefighter ignites a backfire to contain the Butte fire near San Andreas, California September 12, 2015. (Photo by Noah Berger/Reuters)





A firefighter scrambles down an embankment while battling the Butte fire near San Andreas, California September 12, 2015. (Photo by Noah Berger/Reuters)





Flames spout from a gas pipe at a Jefferson St. home leveled by the Valley Fire in Middletown, California September 13, 2015. (Photo by Noah Berger/Reuters)





An inmate firefighter, lit by the glow of a backfire, rests while battling the Butte fire near San Andreas, California September 12, 2015. (Photo by Noah Berger/Reuters)





A firefighter lights a backfire while battling the Butte fire near San Andreas, California September 12, 2015. (Photo by Noah Berger/Reuters)





Firefighter Andrew Dodds monitors a backfire while battling the Butte fire near San Andreas, California September 12, 2015. (Photo by Noah Berger/Reuters)





Burned out remains of a vehicle and swing set scorched by the Valley Fire line Jefferson St. in Middletown, California September 13, 2015. (Photo by Noah Berger/Reuters)





A firefighter covers his face while battling the Butte fire near San Andreas, California September 12, 2015. (Photo by Noah Berger/Reuters)





Firefighters set a backfire while battling the Butte fire near San Andreas, California September 12, 2015. (Photo by Noah Berger/Reuters)





Ezequiel Cervantes, whose father's home was spared as the Valley Fire raged down Highway 175, surveys a neighbor's destroyed home in Middletown, California September 13, 2015. (Photo by Noah Berger/Reuters)





A residence on Siegler Canyon Road burns as the Valley Fire rages through Middletown, California September 13, 2015. (Photo by Noah Berger/Reuters)





Flames from the Valley Fire cover a hillside along Highway 29 in Lower Lake, California September 13, 2015. (Photo by Noah Berger/Reuters)





A destroyed vehicle rests under a carport after the Valley Fire raged through Middletown, California September 13, 2015. (Photo by Noah Berger/Reuters)





Firefighter Jesse Kaplanis battles the Valley Fire in Lower Lake, California September 13, 2015. (Photo by Noah Berger/Reuters)





A dead horse lies beside Highway 175 after the Valley Fire raged through Middletown, California September 13, 2015. (Photo by Noah Berger/Reuters)





A firefighter douses flames from a backfire on Highway 29 while battling the Valley Fire in Lower Lake, California September 13, 2015. (Photo by Noah Berger/Reuters)





Flames from a backfire on Highway 29 rise above a firefighter battling the Valley Fire in Lower Lake, California September 13, 2015. (Photo by Noah Berger/Reuters)





Burned out remains of vehicles and homes scorched by the Valley Fire line Wardlaw St. in Middletown, California September 13, 2015. (Photo by Noah Berger/Reuters)





Cal Fire Santa Clara firefighters rest after battling the Valley Fire in Middletown, California September 13, 2015. (Photo by Noah Berger/Reuters)





A firetruck passes flames from the Valley Fire on Highway 29 in Lower Lake, California September 13, 2015. (Photo by Noah Berger/Reuters)





Firefighters survey a destroyed home at the so-called Valley Fire near Middleton, California September 14, 2015. (Photo by David Ryder/Reuters)





Damaged power lines hang over Butts Canyon Road as crews work during the so-called Valley Fire near Middleton, California September 14, 2015. (Photo by David Ryder/Reuters)





Robert Hooper, exhausted after several days with little sleep, is overcome with emotion while surveying his property that was burnt by the so-called Valley Fire near Middleton, California September 14, 2015. (Photo by David Ryder/Reuters)





Robert Hooper, exhausted after several days with little sleep, is pictured on his property that was burnt by the so-called Valley Fire near Middleton, California September 14, 2015. (Photo by David Ryder/Reuters)





Robert Hooper, exhausted after several days with little sleep, hugs his dog Toby on his property that was burnt by the so-called Valley Fire near Middleton, California September 14, 2015. (Photo by David Ryder/Reuters)





Robert Hooper, exhausted after several days with little sleep, hugs his dog Toby on his property that was partially burnt by the so-called Valley Fire near Middleton, California September 14, 2015. (Photo by David Ryder/Reuters)





A firefighter searches for victims in the rubble of a home burnt by the Valley Fire in Middletown, California, September 14, 2015. (Photo by David Ryder/Reuters)





A firefighter is seen through destroyed cars as he searches for victims in the rubble of a home burnt by the Valley Fire in Middletown, California, September 14, 2015. (Photo by David Ryder/Reuters)





Firefighters search for victims in the rubble of a home burnt by the Valley Fire in Middletown, California, September 14, 2015. (Photo by David Ryder/Reuters)





The sun rises Tuesday morning morning along Highway 175 in Middletown after the Valley fire roared through the area on September 15, 2015 near Santa Rosa, Calif. (Photo by Wally Skalij/Los Angeles Times/TNS)





A tree fire continues to burn in the Anderson Springs community Tuesday morning, September 15, 2015 after the Valley fire roared through the area near Santa Rosa, Calif. (Photo by Wally Skalij/Los Angeles Times/TNS)





Cables are tangled in every direction near the wreckage of a burned home on in Cobb, Calif., on Tuesday, September 15, 2015. (Photo by Marcus Yam/Los Angeles Times/TNS)





A news crew runs from flames southeast of Middletown, Calif., on Tuesday, September 15, 2015, as winds kick up the Valley fire. (Photo by Wally Skalij/Los Angeles Times/TNS)





A news crew runs from flames southeast of Middletown, Calif., on Tuesday, September 15, 2015, as winds kick up the Valley fire. (Photo by Wally Skalij/Los Angeles Times/TNS)





A firefighter runs to his fire truck southeast of Middletown, Calif., on Tuesday, September 15, 2015, as winds kick up flames. (Photo by Wally Skalij/Los Angeles Times/TNS)





Firefighter Jeff Ohs looks into a burned out car that was also hit by a tree at the Harbin Hot Springs resort in a wildfire several days earlier, Tuesday, September 15, 2015, near Middletown, Calif. The fire that sped through Middletown and other parts of rural Lake County, less than 100 miles north of San Francisco, has continued to burn since Saturday despite a massive firefighting effort. (Photo by Elaine Thompson/AP Photo)