A firefighter works to protect a home in Mariposa, California on July 19, 2017 The Detwiler fire, which has burned more than 45,000 acres and destroyed eight structures, is currently at 7 percent containment. (Photo by Josh Edelson/AFP Photo)





A firetruck drives across the Merced River at the Bagby bridge after authorities ordered evacuations due to the Detwiler fire in Mariposa, California, U.S. July 18, 2017. (Photo by Al Golub/Reuters)





With pink retardant in foreground, fire blows up on north side of the Merced River after authorities ordered evacuations due to the Detwiler fire in Mariposa, California, U.S. July 18, 2017. (Photo by Al Golub/Reuters)





The Cal Fire Strike team leader holds a meeting at Shilling Ranch after authorities ordered evacuations due to the Detwiler fire in Mariposa, California, U.S. July 18, 2017. (Photo by Al Golub/Reuters)





A firefighter monitors the Detwiler Fire on July 18, 2017 in Mariposa, California. More than 1,400 firefighters are battling the Detwiler Fire that has burned more than 25,000 acres, forced hundreds to evacuate and destroyed at least 8 structures. The fire is five percent contained. (Photo by Justin Sullivan/Getty Images)





A firefighter sprays water on the Detwiler Fire on July 18, 2017 in Mariposa, California. (Photo by Justin Sullivan/Getty Images)





TOPSHOT - A firefighter sprays down flames as the Detwiler fire rages on, near the town of Mariposa, California on July 18, 2017. California has suffered widespread fires in recent days, with a lighting strike near Yosemite National Park sparking a blaze that destroyed more than 26 square kilometers (10 square miles) of forest. (Photo by Josh Edelson/AFP Photo)





Fire illuminates the scene where the remains of a burned out property are seen near the town of Mariposa, California on July 18, 2017. (Photo by Josh Edelson/AFP Photo)





Firefighters monitor flames on the side of a road as the Detwiler fire rages on near the town of Mariposa, California on July 18, 2017. (Photo by Josh Edelson/AFP Photo)





A firefighter sprays down flames as the Detwiler fire rages on near the town of Mariposa, California on July 18, 2017. (Photo by Josh Edelson/AFP Photo)





Dried grass burns during the Detwiler Fire on July 18, 2017 in Mariposa, California. More than 1,400 firefighters are battling the Detwiler Fire that has burned more than 45,000 acres, forced hundreds to evacuate and destroyed at least 8 structures. The fire is 7 percent contained. (Photo by Justin Sullivan/Getty Images)





A firefighter monitors the Detwiler Fire on July 18, 2017 in Mariposa, California. (Photo by Justin Sullivan/Getty Images)





The Detwiler Fire burns in the hills above town on July 18, 2017 in Mariposa, California. More than 1,400 firefighters are battling the Detwiler Fire that has burned more than 25,000 acres, forced hundreds to evacuate and destroyed at least 8 structures. The fire is five percent contained. (Photo by Justin Sullivan/Getty Images)





A roadside memorial stands next to an area burned by the Detwiler Fire on July 19, 2017 in Mariposa, California. (Photo by Justin Sullivan/Getty Images)





Flames approach a home as the Detwiler Fire burns through brush on July 19, 2017 in Mariposa, California. (Photo by Justin Sullivan/Getty Images)





Cal Fire firefighters monitor the Detwiler Fire on July 19, 2017 in Mariposa, California. (Photo by Justin Sullivan/Getty Images)





Firefighters watch approaching flames as the Detwiler fire rages on near the town of Mariposa, California on July 18, 2017. California has suffered widespread fires in recent days, with a lighting strike near Yosemite National Park sparking a blaze that destroyed more than 26 square kilometers (10 square miles) of forest. (Photo by Josh Edelson/AFP Photo)





An air tanker drops fire retardant on flames as firefighters continue to battle against the Detwiler fire in Mariposa, California on July 19, 2017. The Detwiler fire is currently at 7 percent containment and has burned more than 45,000 acres and destroyed eight structures. (Photo by Josh Edelson/AFP Photo)





Flames rise behind a vacant house as a firefighter works to halt the Detwiler wildfire near Mariposa, Calif., on Wednesday, July 19, 2017. As wildfires rage throughout the western U.S., one California blaze in the rugged mountains outside of Yosemite National Park forced thousands of nearby residents to flee their homes. (Photo by Noah Berger/AP Photo)





Flames from a backfire burn as CalFire crews battle the Ditwiler Fire near Mariposa, Calif., on Tuesday, July 18, 2017. Record rain and snowfall in the mountains this winter was celebrated for bringing California's five-year drought to its knees, but it has turned into a challenge for firefighters battling flames feeding on dense vegetation, officials said. (AP Photo/Noah Berger)