The flash flood was caused by a severe monsoon thunderstorm that hit 13 km (8 miles) upstream along Ellison Creek, in a remote area burned by a recent wildfire, dumping 38 mm (1.5 inches) of rain within 60 minutes.
Gila County Sheriff’s Detective Sgt. David Hornug said the National Weather Service had issued a flash flood warning about 90 minutes before, adding that unless the swimmers had a weather radio out there, they wouldn't have known about it. "There is no cell phone service out here," Hornug said.
There were reportedly 14 swimmers (family and friends) at the swimming hole when swift, 1.8-m-high (6 feet) floodwaters mixed with trees and other debris came rushing in. Sadly, only 4 of them survived and were transported to a nearby hospital with hypothermia.
"They had no warning. They heard a roar, and it was on top of them," Water Wheel Fire and Medical District Fire Chief Ron Sattelmaier said.
The waters gushed for about 10 minutes before receding in the narrow canyon, Sgt. Hornug said.
Aftermath of flash floods near Cold Springs, Arizona. Credit: Jack Lloyd via ABC15 Arizona
According to the Associated Press, sudden flooding in canyons has
been deadly before. In 2015, seven people were killed in Utah's Zion
National Park when they were trapped during a flash flood while hiking
in a popular canyon that was as narrow as a window in some spots and
several hundred feet deep.In 1997, 11 hikers were killed near Page, Arizona, after a wall of water from a rainstorm miles upstream tore through a narrow, twisting series of corkscrew-curved walls on Navajo land known as Lower Antelope Canyon.
Featured image:
Floodwaters along Ellison Creek that left 9 people killed and one
missing in central Arizona on July 15, 2017. Credit: David Cole
https://watchers.news/2017/07/17/flash-flood-cold-springs-arizona-july-15-2017/
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