Wildfire raging near Grand Canyon grows into a 'megafire'
The largest wildfire in the continental United States in 2025 has achieved "megafire" status, officials said August 1.
Arizona's Dragon Bravo Fire, ignited by lightning around July 4, has now surpassed 100,000 acres in size, meaning it's considered a megafire.
The blaze, which has destroyed some of the developed area on the Grand Canyon's North Rim, has grown to more than 105,000 acres as containment dropped to 9% July 31 amid red flag warnings driven by high heat and strong winds.
What is a megafire?
The National Interagency Fire Center defines a megafire by its size: It is a wildfire that burns more than 40,500 hectares (100,000 acres) of land, National Geographic reported.
The Dragon Bravo Fire is the first megafire of the year: According to Weather.com, the second-largest fire was the Cram Fire, which burned more than 95,000 acres in Oregon.
The Dragon Bravo fire has already burned roughly 100 structures and become the largest fire, by far, to hit the Grand Canyon National Park since 1984. On July 13, the wildfire razed the historic 1937 Grand Canyon Lodge.
According to the Arizona Department of Forestry and Fire Management, it also now stands as the 10th largest wildfire in Arizona since 1990, scorching an area more than three times the size of Phoenix.
Extreme heat warnings in effect near fire
As the weekend approaches, extreme heat warnings remain in effect across the region, with temperatures soaring well above normal — reaching between 110 and 114 degrees across Arizona, according to the National Weather Service.
A slight chance of storms is expected east of Phoenix late Friday, Aug. 1, but these storms are not forecast to move toward the wildfire areas and will provide no relief to the Dragon Bravo Fire.
No rain is expected for the Grand Canyon region through at least midweek. While chances for precipitation may briefly rise to around 25% midweek, they are forecast to drop back to zero by the end of the week, meaning dry conditions will likely persist.
There is currently no confirmed structural damage outside the Grand Canyon tied to the Dragon Bravo Fire. No fatalities have occurred.
Wildfire map: Where is the Dragon Bravo fire burning?
According to the latest report on InciWeb, a federal wildfire tracking site, the Dragon Bravo Fire, currently burning across the Kaibab Plateau, is moving northeast toward the Grand Canyon National Park boundary, where the terrain and vegetation begin to change.
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'We're kind of locked in a dry, breezy, abnormally hot pattern because our monsoon hasn't showed up,' said Benjamin Peterson, a meteorologist with the National Weather Service office in Flagstaff, Ariz. Smoke and a pyrocumulus cloud rose at sunset from the Dragon Bravo fire at the Grand Canyon, as seen from Mather Point on Monday. Jon Gambrell/Associated Press A seasonal shift in winds typically brings moisture from the Gulf and the Pacific Ocean to the Southwest starting in late June through September. Thunderstorms wet the landscape, and the air is humid. Not this year. The monsoon season has been very dry so far, the third driest ever, Peterson said. Many areas of Arizona saw below-normal rainfall in July. Get Starting Point A guide through the most important stories of the morning, delivered Monday through Friday. Enter Email Sign Up A gauge in the park measured about an inch of rain in July, with most of it falling early in the month. That's more than a half an inch less than normal. Related : Advertisement Humidity levels were expected to drop into the single digits this weekend. Low humidity means the air is dry, which pulls moisture from the vegetation, making it more flammable. There's hope, though, that the monsoon season will pick up. 'So far, the monsoon season has only existed in short bursts,' Peterson said. 'It could be delayed, and we could catch up. Longer-range models do not really support this, but it only takes a very wet week or two to change that.' Advertisement A lightning strike July 4 ignited the Dragon Bravo fire, which was named after a rock formation called the Dragon that's close to where the blaze started. 'Bravo' was added to the name to differentiate it from a previous Dragon fire in the same general area in 2022. In Alaska, the Klikhtentotzna fire in Yukon-Koyukuk has burned for more than a month. It covered more than 118,000 acres as of Saturday, making it the largest in the country. The Dragon Bravo Fire on the North Rim of Grand Canyon National Park, visible at night from Mather Point on the South Rim in Grand Canyon Village, on July 14. BRIDGET BENNETT/NYT National Park Service officials initially allowed the Dragon Bravo fire to burn, a forest management tool used to improve the health of a forest by thinning overgrown vegetation that can serve as fuel for catastrophic fires. In the days that followed, the fire slowly grew. Then, on July 11, strong winds developed and the fire jumped containment lines, Governor Katie Hobbs of Arizona has called for an investigation into why the federal government decided to manage the fire as a 'controlled burn.' Firefighters are now actively fighting the wildfire. 'This is a full suppression,' said Lisa Jennings, a spokesperson for the Southwest Area Incident Management Team, which is overseeing the firefighting operations. The fire has shut down the North Rim and all hiking trails in this remote area of the national park. The South Rim, which gets 90% of the park's visitors, remains open. Advertisement Trails between the two rims, including the Bright Angel and the Kaibab trails, are closed because of poor air quality from smoke. The mile-deep Grand Canyon cuts between the North Rim and South Rim, providing a natural fire break. Related : The fire burning on the North Rim is visible 11 miles away on the South Rim. 'In the Grand Canyon Historic Village area, if you look directly north, the fire is at 12 o'clock, right across the canyon,' Jennings said. 'You can see the flames at night. You can see clouds of smoke during the day.' Visitors gathered at Mather Point on the South Rim as smoke from the Dragon Bravo Fire rose at dawn, on July 15. BRIDGET BENNETT/NYT The fire has been burning through dense, mixed conifer forest with trees, including Douglas fir, more than 100 feet tall on the North Rim. The vegetation is extremely parched and flammable from the dry, windy weather. 'This fire behavior we're seeing is unprecedented,' Jennings said. 'We have had consistently gusty winds with this dry spell for the past eight days. There's lots of fuel to burn through.' Jennings said the topography of the Grand Canyon had made fighting the fire especially challenging as wind was funneled through the canyon and the smaller finger canyons, causing the wind to accelerate. The wind has been carrying burning embers more than a mile away and rapidly spreading the wildfire. 'The canyon creates its own weather,' Jennings said. 'It's hard to even get across how complex the situation is here.' The most active part of the fire is just outside the park in the Kaibab National Forest. Firefighters are focused on protecting the Kaibab Lodge and its guest cabins, 5 miles from the North Rim entrance. The fire is close to the lodge but on the other side of Highway 67, which is the entrance road into the North Rim. Advertisement This article originally appeared in .
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