Sep 27, 2013
During the second week of September, an upper-level low pressure system formed and became cut off from the mean flow over the Intermountain West. This low slowly migrated from near Las Vegas north to Idaho. Subtropical high pressure remained stationary over the Southern Plains. This configuration channeled a stream of anomalously high moisture into the Rockies. With surface high pressure essentially stationary over the Northern Plains, several days of easterly upslope flow into the Colorado Rock
Source: NOAA National Weather Service Storm Events Database (event 477297). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Hall County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.