A catastrophic flash flood in Grand Canyon National Park has left authorities and families in shock, with over 20 people reported missing following the devastating event. The flood struck on Saturday, when heavy thunderstorms unleashed an unprecedented amount of rainfall, causing a mudslide that surged through the Bright Angel Canyon.
The storm dropped more than an inch of rain within an hour, which was particularly dangerous as the area had recently been affected by the Dragon Bravo Fire. This fire, which swept through the Grand Canyon's North Rim a year ago, left the landscape vulnerable to such sudden and destructive events. The combination of the burned terrain and the intense rainfall led to a rapid surge of floodwaters, which rose over five feet in just 10 minutes.
The National Park Service (NPS) responded swiftly, airlifting 62 campers and hikers to safety. However, the search for those still missing continues as the NPS coordinates efforts with the Arizona Department of Public Safety. Authorities are urging anyone who might have been in the inner canyon along the Bright Angel Creek corridor on August 29 to come forward with information.
The park has been closed to visitors in certain areas, with Phantom Ranch, Bright Angel Campground, the Phantom Ranch canteen, and cabins being among the locations affected. The Colorado River has also been closed to traffic due to debris and other hazards in the waterway. Staff at the park warned that further closures could be necessary if thunderstorms and heavy rainfall persist, as they did on Sunday and Monday.
Cell phone service is difficult to maintain in the region, and satellite phones are being used in areas outside the narrowest portions of the canyon. The flood caused the Colorado River to rise 8 feet in one hour, and the sensor on Bright Angel Creek was damaged by the surging waters.
The NPS has conducted an assessment of the Dragon Bravo burn scar and identified specific areas with a high risk of debris flows. The recent heavy rain on the burned landscape has increased the risk of such events, as the soil's physical and chemical makeup has been altered, making it more susceptible to water.
The National Weather Service has issued warnings of excessive rainfall, which could trigger more flash flooding in the region. The agency has warned of a slight risk of flash flooding in the Four Corners region and a moderate risk in south-central Utah.
As the search for the missing continues, the Grand Canyon community and the nation are grappling with the tragedy of the flash flood. The NPS is working tirelessly to ensure the safety of all visitors and staff, while also piecing together the details of this devastating event.
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