Jun 24, 2021
A plume of moisture advected north into the region underneath a ridge of high pressure. Residual moisture from previous days convection helped to prime the atmosphere which led to an uptick in shower and thunderstorm coverage across western Colorado. Some storms produced heavy rain which led to localized flash flooding across Montrose County.
Source: NOAA National Weather Service Storm Events Database (event 958807). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Montrose County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.