Publication Date October 16, 2013 | The Weather Channel

Colorado Flash Flooding: How It Happened, How Unusual?

United States
The atmospheric setup, features leading to the destructive and deadly flash flooding in northern Colorado on Sep. 11-12, 2013. Image: The Weather Channel
The atmospheric setup, features leading to the destructive and deadly flash flooding in northern Colorado on Sep. 11-12, 2013. Image: The Weather Channel

A collection of ingredients came together to produce a destructive, deadly flash flood event in northern Colorado, including Boulder and parts of the Denver metro areas in mid-September, 2013.

The rainfall totals from this multi-day event were staggering. Parts of Boulder County picked up over 17 inches of rain, while parts of the east Denver metro (Aurora) measured over 14 inches of total rainfall