Storms of Unprecedented Ferocity: The Grand Canyon's Monsoon Fury The recent deluge at the Grand Canyon left two people dead and one missing.
A storm of intense rain and wind ravaged the North Rim on August 10, catching even experienced hikers off guard.
Drew Harrell, an emergency medicine physician who was on a training mission at the time, described it as "some of the worst acute fast forming weather I have ever seen.