About 15 people remain missing at the Grand Canyon after a severe flash flood struck the national park, damaging footbridges and forcing the evacuation of dozens of hikers and campers, according to park officials.

The National Park Service adjusted its initial working estimate of 20 missing people downward as rescue coordination continued. Officials collaborated with the Arizona Department of Public Safety to airlift at least 62 people out of the impact zone. Search and recovery teams focused their efforts on Bright Angel Canyon and the Phantom Ranch area. Authorities appealed to the public for information regarding any hikers or backpackers who were in the backcountry during the storm. No injuries had been officially documented by late Sunday afternoon.

Meteorological Triggers and Infrastructure Devastation

Intense storm cells dropped roughly 1 inch of rain across the North Rim and Bright Angel corridor in multiple waves starting early Saturday. The sudden deluge commenced at approximately 2:30 p.m. local time, generating massive torrents that surged down local tributaries. Federal land managers reported that nearly all pedestrian footbridges spanning Bright Angel Creek were completely destroyed. The high-velocity water carved away riverbanks, widened the creek bed, and swept heavy metal structures and debris directly into the Colorado River. Consequently, river operations and commercial rafting traffic were suspended indefinitely. The flooding also disabled a critical water pipeline supplying the park infrastructure, prompting strict conservation measures ahead of the busy holiday weekend.

Eyewitness Accounts and Evacuation Experiences

Campers and hikers trapped in the inner canyon recounted harrowing moments as the weather deteriorated rapidly. David Gregory described the immediate peril when he observed that the creek near camp was black with debris and flowing rapidly. Wieke De Boer sought shelter inside her tent as water pooled around her gear, using her foot to brace the fabric before park rangers arrived to order an immediate withdrawal.

Nikki Baggs, who was visiting with 2 friends, recalled that it was a beautiful day and then people were screaming and running. Baggs noted that they had intended to purchase a steak dinner at the remote lodge before the flash flood arrived, summarising that the whole thing was terrifying. She praised the emergency response, noting it was a really uniquely coordinated effort, and that's what made us feel safe about all of it in an unsafe situation. Parth Desai witnessed sudden walls of mud and boulders crashing down the canyon walls before his group scrambled to higher ground.

Ongoing Weather Threats and Park Closures

Forecasters warned that persistent monsoonal moisture would keep the threat of severe weather elevated through Monday. Additional thunderstorms capable of producing rainfall rates up to 1 inch per hour threatened to trigger further debris flows and rockfalls. Grand Canyon National Park authorities implemented sweeping closures across Phantom Ranch, Bright Angel Campground, the North Kaibab Trail, and both the Black Bridge and Silver Bridge. Federal officials urged visitors to avoid all restricted zones while damage assessments continue across the affected wilderness corridors.

Environmental Context and Broad Implications

The extreme weather event underscores the profound vulnerability of desert canyons to sudden hydrological shifts driven by regional monsoonal patterns. Earth scientists emphasise that such episodes reflect the inherently dynamic nature of the region's erosional landscape, where steep topography transforms high-intensity rainfall into destructive torrents almost instantaneously. As park authorities balance ongoing recovery protocols with structural rehabilitation, the incident highlights the critical balance between wilderness preservation and visitor safety in one of the world's most heavily visited natural reserves.