Flash Flood — Boulder, Colorado

2021-06-27 · near Jamestown, Boulder, Colorado

Event narrative

Heavy rain produced flash flooding in Geer Canyon in the Calwood burn area.

Wider weather episode

A thunderstorm produced heavy rain and flash flooding in the Calwood burn area. Law enforcement reported a 3 to 4 foot surge of debris and water flowing down Geer Canyon.

The debris flow impacted stretches of Geer Canyon Drive and the lower part of Geer Canyon.

View location on OpenStreetMap → (40.1400, -105.3100)

Source: NOAA Storm Events Database, event_id 968539. Narrative written by the NWS forecast office that issued the report.