A wildfire near Yarnell, Arizona–ignited by dry lightning on June 28, 2013–overran and killed 19 members of the Granite Mountain Hotshots, a group of firefighters within the Prescott Fire Department, on June 30. Just one of the hotshots on the crew survived (Brendan McDonough) — he was posted as a lookout on the fire and was not with the others when the fire overtook them. The Yarnell Hill Fire was one of the deadliest U.S. wildfires since the 1991 Oakland Hills fire, which killed 25 people, and the deadliest wildland fire for U.S. firefighters since the 1933 Griffith Park fire, which killed 29 "impromptu" civilian firefighters drafted on short notice to help battle the Los Angeles area fire.
Yarnell also killed more firefighters than any incident since the September 11 attacks. The Yarnell Hill Fire is the sixth-deadliest American firefighter disaster in history, the deadliest wildfire ever in the state of Arizona, and (at least until 2014) was "the most-publicized event in wildland firefighting history".
The tragedy is primarily attributed to an extreme and sudden shift in weather patterns, causing the fire to intensify and cut off the firefighters' route as they were escaping. The victims were killed by the intense heat and flames of the fire. Other factors that contributed to the tragedy include the terrain surrounding the escape route, which may have blocked the victims' view of the fire front and limited situational awareness, and problems with radio communications.
At around 5:36 p.m. MST (23:36 UTC) on June 28, 2013, a spell of dry lightning ignited a wildfire on Bureau of Land Management lands near Yarnell, Arizona, a town of approximately 700 residents located about 80 miles (130 km) northwest of Phoenix. On June 30, winds blowing at over 22 mph (35 km/h) pushed the fire from 300 acres (120 ha) to over 2,000 acres (810 ha). A long-term drought affecting the area contributed to the fire's rapid spread and erratic behavior, as did temperatures of 101 °F (38 °C).
By July 1, the fire had expanded to over 8,300 acres (3,400 ha) and prompted the evacuation of the nearby community of Peeples Valley. The fire was still completely uncontrolled, with more than 400 firefighters on the line. On July 2, the fire was estimated at 8% containment and had not grown in the past 24 hours. By the end of the day on July 3, the fire was reportedly 45 percent contained and showing no signs of expanding, thus allowing Peeples Valley residents to return to their homes on July 4. Four days later, on July 8, Yarnell residents were permitted to return. The fire was declared 100% contained on July 10.
The Yavapai County Sheriff's Office said that 127 buildings in Yarnell and two in Peeples Valley had been destroyed. A "flash point" of the fire was the Glen Ilah neighborhood of Yarnell, where fewer than half of the structures were burned. Officials shut down 25 miles (40 km) of Arizona State Route 89 shortly after the fire started, and 15 miles (24 km) of State Route 89 remained closed as of June 30.
A total evacuation of Yarnell and partial evacuation of Peeples Valley was ordered. At least 600 people were under mandatory evacuation orders. An evacuation shelter was set up at Yavapai College in Prescott, with members of the Red Cross providing cots and blankets for overnight stays, along with meals and medical assistance.
A second evacuation shelter was assembled at Wickenburg High School in nearby Wickenburg, because the closure of State Route 89 made it impossible for some people to reach the first shelter. Officials from the Red Cross said that 351 people spent at least one night at one of the shelters.
On June 30, wildland firefighters with the Prescott Fire Department's interagency Granite Mountain Hotshots were overrun and killed by the fire. Initial reports indicated that one of the firefighters was not a member of the hotshot crew (IHC), but Prescott Fire Chief Dan Fraijo later confirmed that all 19 were Granite Mountain Hotshots. The firefighters had apparently deployed fire shelters during the entrapment, but the heat of the wildfire soared over 2,000 °F (1,090 °C). Not all of the bodies were found inside the fire shelters. The city of Prescott released the names of the 19 firefighters on July 1.
The only survivor from the 20-man crew was 21-year-old Brendan McDonough. He had been serving as a lookout when the fire threatened to overtake his position. McDonough contacted the Granite Mountain Hotshots' team by radio to let them know of his situation. He was told by the second in command, Jesse Steed, to evacuate his position. McDonough was hiking out on foot when he was located by Brian Frisby, superintendent of the Blue Ridge Hotshots, who was monitoring the radio communications between McDonough and the Granite Mountain IHC captain. Frisby and McDonough moved the crew's vehicles to a safer location, which they were doing at the time of the Granite Mountain crew's entrapment.
After moving the vehicles, Frisby and other members of the Blue Ridge Hotshots attempted to rescue the entrapped Granite Mountain Hotshots, but were forced back by the intense flames and heat of the fire. Driving through the streets of Yarnell, the Blue Ridge Hotshots evacuated several residents who had failed to evacuate earlier. At approximately 4:42 p.m., the fire overtook the Granite Mountain Hotshots' position. When a helicopter was able to fly into the area over two hours later, Eric Tarr, a police officer–paramedic with the Arizona Department of Public Safety went in on foot and found the 19 bodies.
According to the National Fire Protection Association, it was the greatest loss of life for firefighters in a wildfire since the 1933 Griffith Park fire, the greatest loss of firefighters in the United States since the destruction of the World Trade Center in 2001, and the deadliest wildfire of any kind since the 1991 East Bay Hills fire. The number of total fatalities—although not of firefighters—has since been surpassed by California's 2018 Camp fire which killed 85 civilians, and the 2023 Lahaina fire on Maui, Hawaiʻi, which killed 102 people.
On June 30, Arizona Governor Jan Brewer issued a statement offering her condolences. "This is as dark a day as I can remember," she said. She ordered flags flown at half-staff in Arizona through July 19. President Barack Obama issued a statement on July 1, promising federal help and praising the 19 firefighters as heroes.
Federal Emergency Management Agency Administrator Craig Fugate and United States Fire Administrator Ernest Mitchell issued similar statements on July 1. On July 2, members of the Arizona Cardinals visited one of the Red Cross shelters, and the team president donated US$100,000 to the 100 Club of Arizona, an organization that assists firefighters, police, and their families in crises. Authorities said that US$800,000 had been raised for the families of the victims as of July 4.
On July 2, more than 3,000 people attended a public memorial service at an indoor stadium in Prescott Valley. Vice President Joe Biden, Arizona Governor Jan Brewer, and the team's lone surviving firefighter, Brendan McDonough, spoke at a memorial in Prescott on Tuesday, July 9. That memorial was attended by thousands, including representatives from over 100 hotshot crews across the country, and was streamed live by several media outlets. Individual memorial services were scheduled for later in the hometowns of the 19 firefighters.
A nine-member investigative team of forest managers and safety experts arrived in Arizona on July 2. Their mission was to "understand what happened as completely as possible" to prevent similar incidents. Granite Mountain Hotshots Memorial State Park was created to honor the hotshots. A three-mile (4.8 km) path leads from a parking area on Highway 89 up to an observation deck. A trail follows the last steps of the hotshots down to the fatality site where they made their last stand. Encircling the fatality site, 19 gabions, one for each hotshot, are united by chains.