As a research scientist with the Arizona Geological Survey , Ann Youberg pays close attention to both wildfires and what could come next.
That afterward part recently prompted Youberg to ask a friend living near Finger Rock Canyon if she has flood insurance.
Itβs something all property owners near the Bighorn Fire βs burn areas should check into, according to both Youberg and Eric Shepp, deputy director and floodplain administrator with the Pima County Regional Flood Control District .
Hereβs why: Wildfires often damage the landscape in ways that greatly increase the risk for debris flows, which is when rainwater mixes with dirt, rocks, cactus β and even boulders and trees.
βThe increased flooding is partly due to loss of vegetation in the burn area, and change in the behavior of the soil to resist infiltration,β Shepp said. βThese two cause more water to run off during a rainstorm, which creates faster flows with more volume.β
The Bighorn Fire, which was started by lightning on June 5, had grown to 14,675 acres as of Monday and is now about 22% contained.
The wildfire burned through the rocky, steep Pusch Ridge area before moving into Pima Canyon, Finger Rock Canyon and Pontatoc Canyon on the front range, which forced evacuations of homes near the Coronado National Forest boundary.
The fire has also burned into Catalina State Park in Oro Valley and forced evacuations south of the town of Catalina. There is now a pre-evacuation alert issued for Summerhaven, Mount Lemmon and Mount Bigelow.
Youberg said when rain eventually falls on fire-damaged areas such as these, thereβs often no longer enough vegetation and plant canopies to break the rainβs impact. Thereβs also less dead plant material on the groundβs surface to soak up water.
βWhat happens after a fire is the soils have been altered and so water canβt infiltrate like it did before the fire,β she said. βFire also changes soil so that it is more easily eroded. More and faster runoff with more erodible soils can often lead to a debris flow.β
Another factor: Summer rains that follow a wildfire can frequently be very intense, Shepp said, with rain falling at a rate of an inch an hour or more. Add in the other factors, including steep slopes, and the results can be disastrous for nearby homeowners.
βWe know that wildfires change watershed characteristics that result in the potential for increased flood risk for those who live and work downstream,β Shepp said.
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Sometimes the changes are dramatic.
βOur own observations from the Aspen Fire, along the Canada Del Oro Wash, shows that even typical monsoon downbursts can cause significant flooding, with peaks of 7,000 cubic feet per second of water, ash, mud and vegetative debris,β he said.
Over the last 20 years, several people in Arizona have died in this type of flooding, including Oracle resident Jim Huntington, whose house along Bonita Canyon was destroyed by a terrifying debris flow following the Aspen Fire in 2003.
A couple of years later, a school-aged girl in Maricopa County died following the Cave Creek Fire.
The East Valley Tribune in 2005 reported that the fire had ravaged Tonto National Forest north of Cave Creek before an 8-foot wall of water swept away trees, a car and 7-year-old Marissa Reyes.
Loss of property is far more typical than these tragedies, however.
In fact, floods are the most common and costly natural disaster, according to the Federal Emergency Management Agency. And mud and rocks that get carried along can increase the size of a flood, and the likelihood it will to do severe damage, by upward of 50%.
Whatβs next? Shepp said Pima County will assess burn areas in order to update floodplain models that will help them look at how the watercourses and the flood risk have been affected in both Pima Canyon and Finger Rock Canyon. Other watersheds may be added, he said, depending on how the fire expands.
βAdding rain gauges in the burn areasβ upper watershed to measure rainfall and to help alert property owners and first responders if a flood threat is imminent is another task we would like to complete before monsoon,β he said.
A Burn Area Emergency Response Team will look at burn severity and the effects of fire intensity on the land, Youberg said. Itβs one of the ways they determine the likelihood of debris flows.
βWe just have to wait and see what the burn severity is before we know what the likelihood of postfire debris flows might beβ she said. βWeβll have to be patient until the assessments are done, and then listen to what the results tell us.β
Photos: The Bighorn Fire in Coronado National Forest near Tucson
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Smoke from the Bighorn Fire colors the skies over the eastern slopes of the Santa Catalina and Rincon mountains, Cascabel, Ariz., June 30, 2020.
Kelly Presnell / Arizona Daily Star
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Smoke from the Bighorn Fire puffs above the cottonwood-willow forest running along the San Pedro River valley, Cascabel, Ariz., June 30, 2020.
Kelly Presnell / Arizona Daily Star
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Smoke from the Bighorn fire blows Northeast over the Catalina mountains on June 30, 2020 in Tucson, Ariz. Photo taken from E. Speedway Blvd.
Rebecca Sasnett / Arizona Daily Star
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Bighorn Fire burn area on Samaniego Ridge in the Santa Catalina Mountains looking west toward Biosphere II on June 27, 2020.
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Bulldozer clearing vegetation on the Northeast corner of the Bighorn Fire burning in and around the Santa Catalina Mountains on June 27, 2020.
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Crews working the Bighorn Fire near Summerhaven, Ariz., in the Santa Catalina Mountains on June 23, 2020.
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West winds push the smoke of the Bighorn Fire as it burns on the southeastern slopes of the Santa Catalina Mountains, Tucson, Ariz., June 26, 2020. The lights on the antennas of Mount Bigelow are just visible at right through the smoke.
Kelly Presnell / Arizona Daily Star
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Flames from the Bighorn Fire climb over a ridge near Esperero Canyon lighting up a stand of saguaro as the blaze continues relentlessly to the east on the southern slopes of the Santa Catalina Mountains, Tucson, Ariz., June 23, 2020. Engine crews were monitoring the fire, which was largely beneficial and no threat to homes.
Kelly Presnell / Arizona Daily Star
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Flames from the Bighorn Fire rise over a ridge near Esperero Canyon as the blaze moves east on the southern slopes of the Santa Catalina Mountains, Tucson, Ariz., June 23, 2020.
Kelly Presnell / Arizona Daily Star
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Smoke from the Bighorn Fire covers the Santa Catalina Mountains with Sentinel Peak seen in the foreground Tuesday morning on June 23, 2020.
Mamta Popat / Arizona Daily Star
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From Ventana Canyon, at left, to just north of the end of Houghton Road, the Bighorn Fire stretches along the southern slopes of the Santa Catalina Mountains, Tucson, Ariz., June 20, 2020.
Kelly Presnell / Arizona Daily Star
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Traffic on Sabino Canyon Road drives under the glow of he Bighorn Fire as it claims Ventana Canyon on the south slopes of the Santa Catalina Mountains, Tucson, Ariz., June 19, 2020.
Kelly Presnell / Arizona Daily Star
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The Bighorn Fire burning in Ventana Canyon in the Santa Catalina Mountains behind downtown Tucson on June 18, 2020.
Kelly Presnell / Arizona Daily Star
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Flames return to the southern slopes as the Bighorn Fire continues to burn through the heart of the Santa Catalina Mountains, Tucson, Ariz., June 18, 2020.
Kelly Presnell / Arizona Daily Star
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Radio Ridge, near the top of the Santa Catalinas, is silhouetted by flames from the Bighorn Fire on the southern seen from near, Oracle, Ariz., June 18, 2020.
Kelly Presnell / Arizona Daily Star
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Passersby use a wildlife exit along Oracle Road to get an elevated view the smoke billowing out of the northwestern portion of the Bighorn Fire, Oro Valley, Ariz., June 17, 2020.
Kelly Presnell / Arizona Daily Star
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The Bighorn Fire lights up the ridge overlooking Saddlebrooke in the northwestern foothills of the Santa Catalina Mountains, Tucson, Ariz., June 17, 2020.
Kelly Presnell / Arizona Daily Star
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Smoke billows from the Santa Catalinas as the Bighorn Fire continues to burn as seen from Honey Bee Canyon Park in Oro Valley, on June 17, 2020.
Josh Galemore / Arizona Daily Star
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The same wind whipping the flags outside the Fairfield Inns & Suites on Oracle Road is whipping up the flames and smoke of the Bighorn Fire, Oro Valley, Ariz., June 17, 2020.
Kelly Presnell / Arizona Daily Star
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Flames break through the smoke as a finger of the Bighorn Fire scorches its way through a canyon on the west side of the Santa Catalina Mountains, Tucson, Ariz., June 17, 2020.
Kelly Presnell / Arizona Daily Star
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A stand of pines go up in flames as the Bighorn Fire pushes its way down a slope on the northern side of the Santa Catalina Mountains, Tucson, Ariz., June 16, 2020.
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A DC-10 VLAT makes a slurry drop near the observatory site and along the burnout of the 17 year-old Aspen Fire as crew fight to keep the Bighorn Fire being advancing on Mount Lemmon, Tucson, Ariz., June 16, 2020.
Kelly Presnell / Arizona Daily Star
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The Bighorn Fire crest a ridge on the north side of the Santa Catalina Mountains as the day's steady winds push the flames closer to Mount Lemmon, Tucson, Ariz., June 16, 2020.
Kelly Presnell / Arizona Daily Star
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A Sikorsky firefighting helicopter drops water along a ridge top as the flames from the Bighorn Fire work their way onto the northern slopes of the Santa Catalina Mountains, Tucson, Ariz., June 16, 2020.
Kelly Presnell / Arizona Daily Star
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A DC-10 VLAT climbs out of the range after making a slurry drop between The Bighorn Fire and Mount Lemmon, Tucson, Ariz., June 16, 2020.
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A fire engine from Three Points Fire District west of Tucson passes a Pima County Sheriff Auxiliary Volunteer on its way up the Catalina Highway to Mount Lemmon on June 15, 2020. Several local fire districts supply equipment and firefighters to fight the Bighorn Fire.
Rebecca Sasnett / Arizona Daily Star
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Sierra National Forest hotshot crew members talk about wind patterns while preparing for a possible change in direction from the Bighorn Fire on Mount Lemmon in the Santa Catalina Mountains in Ariz. on June 14, 2020.
Rebecca Sasnett / Arizona Daily Star
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A Sierra National Forest hotshot crew member measures the wind while preparing for a possible change in direction from the Bighorn Fire on Mount Lemmon in the Santa Catalina Mountains in Ariz. on June 14, 2020.
Rebecca Sasnett / Arizona Daily Star
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Smoke flows out of canyons in the Santa Catalina Mountains from the Bighorn Fire north of Tucson, Ariz. on June 14, 2020, as seen from Mount Lemmon Trail #5.
Rebecca Sasnett / Arizona Daily Star
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Smoke from the Bighorn Fire burning in canyons in the Santa Catalina Mountains to the west, looms over homes in Summerhaven, Ariz. on June 14, 2020.
Rebecca Sasnett / Arizona Daily Star
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A family of four horned owls perch on a utility pole near Tanque Verde and Houghton with the glow from the Bighorn Fire burning in the Santa Catalina Mountains behind them to north, Tucson, Ariz., June 14, 2020.
Kelly Presnell / Arizona Daily Star
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The Bighorn Fire's northwestern front looms over homes as it burns into the central Santa Catalina Mountains, Oro Valley, Ariz., June 13, 2020.
Kelly Presnell / Arizona Daily Star
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A stiff wind out of the southwest pushes the Bighorn Fire into the central Santa Catalina Mountains and toward homes, Oro Valley, Ariz., June 13, 2020.
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A Chinook helicopter carrying a water bucket flies north along the Pusch Ridge Wilderness as the Bighorn Fire pushes north-northeast into Romero Canyon east of Catalina State Park in Santa Catalina Mountains on Saturday, June 13, 2020.
Josh Galemore / Arizona Daily Star
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A air tanker flies above the the Bighorn Fire as smoke billows up near the mouth of Romero Canyon, on June 13, 2020.
Josh Galemore / Arizona Daily Star
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A DC-10 VLAT drops below the ridge line in his path to make a slurry drop as the battle moves to the northwest and crews work to keep the Bighorn Fire from spreading through Catalina State Park, Oro Valley, Ariz., June 11, 2020.
Kelly Presnell / Arizona Daily Star
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Two firefighting helicopters maneuver around one another while recharging at a dip site as the battle moves to the north to keep the Bighorn Fire from spreading, Oro Valley, Ariz., June 11, 2020.
Kelly Presnell / Arizona Daily Star
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An aerial tanker banks out of a smoky gully after making a slurry drop as the battle moves to the northwestern reaches of the Santa Catalina Mountains, Oro Valley, Ariz., June 11, 2020.
Kelly Presnell / Arizona Daily Star
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A Chinook helicopter drops water on the line of flames advancing through grasslands at the northwestern foot of the Santa Catalinas as crews work to keep the Bighorn Fire from spreading through Catalina State Park, Oro Valley, Ariz., June 11, 2020.
Kelly Presnell / Arizona Daily Star
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A firefighting Sikorsky helicopter calls it a night and flies for base as sun sets on the the battle to keep the Bighorn Fire from spreading, Oro Valley, Ariz., June 11, 2020.
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A McDonnell Douglas MD-80 firefighting air tanker emerges from heavy smoke from the Bighorn Fire burning near Catalina State Park in Oro Valley on June 12, 2020.
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People stand along Oracle Road just north of the entrance to Catalina State Park as the Bighorn Fire continues to burn in the Pusch Ridge Wilderness near the park, on June 12, 2020.
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People stand along Oracle Road just north of the entrance to Catalina State Park as the Bighorn Fire continues to burn at the base of Pusch Ridge near the park, on June 12, 2020.
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A Chinook helicopter drops water on the Bighorn Fire burning in Pusch Ridge, on June 12, 2020.
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A line of fire retardant draped along the Santa Catalina Mountains from Sunrise Drive above Cimarron Foothills Estates neighborhood as the Bighorn Fire burns for its seventh day in the western Santa Catalina mountain range, on June 12, 2020.
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A Chinook helicopter dumps water on the Bighorn Fire in the front range of the Santa Catalina Mountains in between granite faces already painted with pink fire retardant on Thursday, June 11, 2020.
Mamta Popat / Arizona Daily Star
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People stand along Oracle Road just north of the entrance to Catalina State Park as the Bighorn Fire continues to burn in the Pusch Ridge near the park, on June 12, 2020.
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People watch from Oracle Road just north of the entrance to Catalina State Park as Chinook helicopters drop water on the Bighorn Fire burning for its seventh day in Pusch Ridge very close to Catalina State Park on June 12, 2020.
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The Bighorn Fire inches over a ridge above several homes north of Coronado Drive west of Swan as night falls on the neighborhoods under evacuation and prepare to leave warnings in the Santa Catalina Mountain foothills, Tucson, Ariz., June 11, 2020.
Kelly Presnell / Arizona Daily Star
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A DC-10 VLAT makes a last drop in the dying light over the homes in the area between Swan and Alvernon during the daylong struggle to keep the Bighorn Fire out of the neighborhoods of the Santa Catalina Mountain foothills, Tucson, Ariz., June 11, 2020.
Kelly Presnell / Arizona Daily Star
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A Sikorsky firefighting helicopter heads back to the dip tank, overflying several homes under a smoking ridge in the upper reaches of the Santa Catalina foothills as crews fight to keep the Bighorn Fire out of several neighborhoods, Tucson, Ariz., June 11, 2020.
Kelly Presnell / Arizona Daily Star
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A tanker skims over a ridge while dropping slurry just west of Craycroft during the struggle to keep the Bighorn Fire out of the neighborhoods of the Santa Catalina Mountain foothills, Tucson, Ariz., June 11, 2020.
Kelly Presnell / Arizona Daily Star
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Residents in the Catalina Foothills neighborhood north of Tucson watch an air tanker drop fire retardant on the Bighorn Fire near Finger Rock Canyon the Santa Catalina Mountains on June 11, 2020. Photo by Rebecca Sasnett / Arizona Daily Star
Rebecca Sasnett / Arizona Daily Star
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A hot shot fire crew fighting the Bighorn Fire hikes on ridge near Finger Rock Canyon in the foothills of the Santa Catalina Mountains north of Tucson, Ariz. on June 11, 2020. Photo by Rebecca Sasnett / Arizona Daily Star
Rebecca Sasnett / Arizona Daily Star
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Pink fire retardant settles over a ridge near Finger Rock Canyon in the Santa Catalina Mountains north of Tucson, Ariz. on June 11, 2020.
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A helicopter dumps water along an area to combat the Bighorn Fire in the Santa Catalina Mountains on June 11, 2020.
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Qin Chen talks with Tom Lemmons, of the Pima County Sheriff's Office Auxiliary, about "Go" orders given to evacuate her home in the Cobblestone Estates neighborhood due to the Bighorn Fire in the Santa Catalina Mountains on June 11, 2020. Lemmons asked residents if they planned to evacuate or stay in their home.
Mamta Popat / Arizona Daily Star
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Keith Lencke of the Blue Ridge Hotshots watches the air attack on the Bighorn Fire in the Cobblestone Estates neighborhood near the Santa Catalina Mountains on June 11, 2020.
Mamta Popat / Arizona Daily Star
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People watch the Bighorn Fire from La Encantada at Campbell and Skyline on June 11, 2020.
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A UH-60 firefighting helicopter picks up a bucket of water at Immaculate Heart High School as another helicopter drops water on the Bighorn Fire burning in Pima Canyon in the Santa Catalina Mountains north of Tucson on June 11, 2020.
Rick Wiley / Arizona Daily Star
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A Chinook helicopter refills with water at Imaculate Heart High School near Magee and Oracle while fighting the Bighorn Fire burning in Pima Canyon in the Santa Catalina Mountains north of Tucson on June 11, 2020.
Rick Wiley / Arizona Daily Star
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A jet tanker drops retardant as it flies through Pontatoc Canyon as wildfire crews continue to fight the Bighorn Fire which has spread along the western side of the Santa Catalinas, on June 11, 2020.
Josh Galemore / Arizona Daily Star
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An air tanker drops fire retardant as wildfire crews continue to fight the Bighorn Fire which has spread along the western side of the Santa Catalinas, on June 11, 2020.
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A helicopter carries water over an area of the Bighorn Fire in the Santa Catalina Mountains in the Coronado National Forest north of Tucson on June 10, 2020. The fire has now burned 3,277 acres since it started on Friday, June 5, from a lightning strike in the Pusch Ridge area of the Catalina Mountains.
Mamta Popat / Arizona Daily Star
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From alongside Campbell Avenue, a couple gets photos of the Bighorn Fire breaking onto the southern slopes of the Santa Catalina Mountains, Tucson, Ariz., June 10, 2020.
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In the last of the day's light a helicopter makes a last minute water drop on a line of flames from the Bighorn Fire moving down the southern slopes of the Santa Catalina Mountains, Tucson, Ariz., June 10, 2020.
Kelly Presnell / Arizona Daily Star
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The Bighorn Fire breaks onto the southern slopes of the Santa Catalina Mountains and burns aboveΒ a pair of homes in the foothills just west of the Finger Rock Trailhead, Tucson, Ariz., June 10, 2020.
Kelly Presnell / Arizona Daily Star
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A chinook helicopter drops a load of water on the Bighorn Fire as is moves into the top of Finger Rock Canyon and up Mount Kimball, on June 10, 2020.
Josh Galemore / Arizona Daily Star
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A Smokey Bear Hotshot walks along Finger Rock Canyon trail as smoke billows from the Bighorn Fire further up the canyon, on June 10, 2020.
Josh Galemore / Arizona Daily Star
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Adam Hutton with the Smokey Bear Hotshots of Ruidoso, New Mexico tosses away brush being cut near the mouth of Finger Rock Canyon as a precaution against the growing Bighorn Fire being fought in the Santa Catalina Mountain Range, on June 10, 2020.
Josh Galemore / Arizona Daily Star
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Hotshots with Smokey Bear and Blue Ridge talk near the Finger Rock Canyon trailhead as smoke billows from the Bighorn Fire billows in the distance, on June 10, 2020.
Josh Galemore / Arizona Daily Star
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Crew members with the Smokey Bear Hotshots from Ruidoso, New Mexico cut line near the mouth of Finger Rock Canyon as a precaution against the growing Bighorn Fire being fought in the Santa Catalina Mountain Range, on June 10, 2020.
Josh Galemore / Arizona Daily Star
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A driver heads south on Campbell Ave. as smoke billows from the Bighorn Fire in the Santa Catalina Mountains in the Coronado National Forest north of Tucson on June 10, 2020.
Mamta Popat / Arizona Daily Star
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The Bighorn Fire burning in Pima Canyon and Finger Rock Canyon in the Santa Catalina Mountains, Coronado National Forest north of Tucson, Ariz., June 10, 2020.
Kelly Presnell / Arizona Daily Star
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Heavy fuels burning above Finger Rock Canyon produce think black smoke during the Bighorn Fire within the Santa Catalina Mountains in Coronado National Forest north of Tucson on June 10, 2020.
Rick Wiley / Arizona Daily Star
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Tinder-dry vegetation bursts into flames above during the Bighorn Fire burning above Finger Rock Canyon within the Santa Catalina Mountains in Coronado National Forest north of Tucson on June 10, 2020.
Rick Wiley / Arizona Daily Star
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The hazy remnants of the Bighorn Fire hang low in Pima Canyon within the Santa Catalina Mountains in Coronado National Forest north of Tucson on the morning of June 10, 2020.Β
Rick Wiley / Arizona Daily Star
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The Bighorn Fire burns on the East side of beloved hiking area Pima Canyon within the Santa Catalina Mountains in Coronado National Forest north of Tucson, late on June 9, 2020. The lightning-caused fire increased slightly, to 2,556 acres, but is still but still only 10% contained.Β
Rick Wiley / Arizona Daily Star
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A helicopter flies along the Catalinas on its way to Rose Canyon Lake while fighting the Bighorn fire in Pima Canyon, on June 9, 2020.
Josh Galemore / Arizona Daily Star
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Dark smoke from heavy fuels in the upper elevations of Pima Canyon obscure the rising sun during the Bighorn Fire in the Santa Catalina Mountains in Coronado National Forest north of Tucson on June 9, 2020.
Rick Wiley / Arizona Daily Star
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The Bighorn Fire glows as it burns into Pima Canyon in the western reaches of the Santa Catalina Mountains above Tucson, Ariz., just after sunset June 8, 2020. During its third day, the lightning sparked wildfire chewed a wind driven path east and higher into the range.
Kelly Presnell / Arizona Daily Star
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A helicopter drops a bucket of water on the Bighorn Fire burning into Pima Canyon inside the Coronado National Forest north of Tucson, Ariz. on June 8, 2020. The lighting-caused Bighorn Fire, as of Monday June 8, has spread to over 2,300 acres and is 10% contained, according to Oro Valley Police department via Twitter.
Rebecca Sasnett / Arizona Daily Star
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A long nighttime exposure of fire burning in Pusch Ridge accentuates the flames of the Bighorn Fire burning in the Santa Catalina Mountains in Coronado National Forest north of Tucson on June 7, 2020.
Rick Wiley / Arizona Daily Star
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A Chinook heavy-lift helicopter with water bucket trailing behind speeds back to the dip tank during the Bighorn Fire burning along Pusch Ridge of the Santa Catalina Mountains in Coronado National Forest north of Tucson on June 7, 2020.
Rick Wiley / Arizona Daily Star
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Smoke envelops a granite spire during the Bighorn Fire burning along Pusch Ridge of the Santa Catalina Mountains in Coronado National Forest north of Tucson on June 7, 2020.
Rick Wiley / Arizona Daily Star
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A large air tanker drops fire retardant on the top of Pusch Ridge during the Bighorn Fire burning in the Santa Catalina Mountains in Coronado National Forest north of Tucson on June 7, 2020.
Rick Wiley / Arizona Daily Star
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At the Bighorn Fire burning along Pusch Ridge of the Santa Catalina Mountains in Coronado National Forest north of Tucson on June 7, 2020. Photo by Rick Wiley / Arizona Daily Star
Rick Wiley / Arizona Daily Star
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People watch the aerial ballet of helicopters and air tankers on the Bighorn Fire from the safety of Oro Valley Marketplace on June 7, 2020. The Bighorn Fire is burning along Pusch Ridge of the Santa Catalina Mountains in Coronado National Forest north of Tucson on June 7, 2020. Photo by Rick Wiley / Arizona Daily Star
Rick Wiley / Arizona Daily Star
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A Chinook heavy-lift helicopter trailing a water bucket flies past canyons choked with smoke during the Bighorn Fire burning along Pusch Ridge of the Santa Catalina Mountains in Coronado National Forest north of Tucson on June 7, 2020. Photo by Rick Wiley / Arizona Daily Star
Rick Wiley / Arizona Daily Star
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A heavy-lift Chinook helicopter takes off from the Bighorn Fire heli-base on Oracle Road during the Bighorn Fire burning along Pusch Ridge of the Santa Catalina Mountains in Coronado National Forest north of Tucson on June 7, 2020. Photo by Rick Wiley / Arizona Daily Star
Rick Wiley / Arizona Daily Star
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An air tanker drops retardant the Bighorn Fire burning along Pusch Ridge of the Santa Catalina Mountains in Coronado National Forest north of Tucson on June 7, 2020. Photo by Rick Wiley / Arizona Daily Star
Rick Wiley / Arizona Daily Star
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A lead plane, lower left, guides a large air tanker during a retardant drop at the Bighorn Fire burning along Pusch Ridge of the Santa Catalina Mountains in Coronado National Forest north of Tucson on June 7, 2020. Photo by Rick Wiley / Arizona Daily Star
Rick Wiley / Arizona Daily Star
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A huge DC-10 VLAT (Very Large Air Tanker) pulls up after dropping a load of fire retardant in a neighborhood just south of Catalina State Park during the Bighorn Fire burning along Pusch Ridge in Coronado National Forest north of Tucson on June 6, 2020.
Rick Wiley / Arizona Daily Star
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Smoke from the Bighorn Fire shrouds granite formations of Pusch Ridge in Coronado National Forest north of Tucson on June 6, 2020.
Rick Wiley / Arizona Daily Star
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A heavy-lift helicopter drops water on the line of the Bighorn Fire burning along Pusch Ridge in Coronado National Forest north of Tucson on June 6, 2020.
Rick Wiley / Arizona Daily Star
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A Sikorsky heavy-lift helicopter finishes a drop at dusk on the Bighorn Fire burning along Pusch Ridge in Coronado National Forest north of Tucson on June 6, 2020.
Rick Wiley / Arizona Daily Star
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The Huey helicopter passes along a ridge on the Bighorn Fire burning along Pusch Ridge in Coronado National Forest north of Tucson on June 6, 2020.
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Updated
May 28, 2024
Flames fanned by canyon winds emerge from the smoke during the Bighorn Fire burning along Pusch Ridge in Coronado National Forest north of Tucson on June 6, 2020.
Rick Wiley / Arizona Daily Star
Bighorn Fire
Updated
May 28, 2024
Smoke shrouds granite formations the Bighorn Fire burning along Pusch Ridge in Coronado National Forest north of Tucson on June 6, 2020.
Rick Wiley / Arizona Daily Star
Bighorn Fire
Updated
May 28, 2024
The Bighorn Fire burning about La Reserve along Pusch Ridge in Coronado National Forest north of Tucson on June 6, 2020.
Rick Wiley / Arizona Daily Star
Bighorn Fire
Updated
May 28, 2024
A DC-10 Very Large Air Tanker drops on the Bighorn Fire burning along Pusch Ridge in Coronado National Forest north of Tucson on June 6, 2020.
Rick Wiley / Arizona Daily Star
Bighorn Fire
Updated
May 28, 2024
A heavy lift helicopter passes through the Bighorn Fire burning along Pusch Ridge in Coronado National Forest north of Tucson on June 6, 2020.
Rick Wiley / Arizona Daily Star
Bighorn Fire
Updated
May 28, 2024
A DC-10 Very Large Air Tanker drops thousands of gallons of retardant at the base of the Bighorn Fire burning above La Reseve along Pusch Ridge in Coronado National Forest north of Tucson on June 6, 2020.
Rick Wiley / Arizona Daily Star
Bighorn Fire
Updated
May 28, 2024
The Bighorn Fire burning along Pusch Ridge in Coronado National Forest north of Tucson on June 6, 2020.
Courtesy of John Miranda
Bighorn Fire
Updated
May 28, 2024
An air tanker drops fire retardant to create a fire line behind homes (bottom center) in Or Valley during the Bighorn Fire burning along Pusch Ridge in Coronado National Forest north of Tucson on June 6, 2020.
Rick Wiley / Arizona Daily Star
Bighorn Fire
Updated
May 28, 2024
Helicopters drop water on the Bighorn Fire burning along Pusch Ridge in Coronado National Forest north of Tucson on June 6, 2020.
Rick Wiley / Arizona Daily Star
Bighorn Fire
Updated
May 28, 2024
Helicopters drop water on the Bighorn Fire burning along Pusch Ridge in Coronado National Forest north of Tucson on June 6, 2020.
Rick Wiley / Arizona Daily Star
Bighorn Fire
Updated
May 28, 2024
Helicopters drop water on the Bighorn Fire burning along Pusch Ridge in Coronado National Forest north of Tucson on June 6, 2020.
Rick Wiley / Arizona Daily Star
Bighorn Fire
Updated
May 28, 2024
The Bighorn Fire burning along Pusch Ridge in Coronado National Forest north of Tucson on June 6, 2020.
Rick Wiley / Arizona Daily Star
Bighorn Fire near Oro Valley
Updated
May 28, 2024
A fire is burning in the Pusch Ridge area east of Oro Valley on Saturday. The fire was started by lightning for storms that moved through Friday night. Ground crews and helicopters are fighting the blaze, which is not spreading rapidly.
Courtesy of the Coronado National Forest