Event narrative (NOAA)
Major flash flooding and debris flows occurred throughout Glenwood Canyon from the Grizzly Creek Fire burn scar as a result of significant rainfall from showers and thunderstorms. Multiple mudslides were reported by the Colorado Department of Transportation (CDOT). Numerous vehicles were trapped between slides for several hours. Rainfall rates in excess of 4 inches/hour were estimated with storms. Remote gauges recorded between 1 and 2 inches in less than an hour along the south and east sides of the burn scar. CDOT reported damage to the structure of Interstate 70 which remained closed for over two weeks due to cleanup operations and surveys.
Other notable debris flow events in Colorado
Source: NOAA/NCEI Storm Events Database. Deaths and injuries are those NOAA classifies as direct. Damage is the reporting office's estimate at the time and is not inflation-adjusted. This is a catalogue record, not a forecast.