Apr 23, 2017
A 500 MB trough of low pressure moved into the central plains on the 20th and 21st, and was associated with a surface front moving southeastward from the Ohio Valley into eastern Kentucky and middle Tennessee. This placed the upper Tennessee Valley in a warm and humid air mass, which aided in the generation of heavy rainfall and some severe storms on those days. The 500 MB trough then deepened into a closed low, while low pressure formed along the surface front and tracked from southern Arkansas
Source: NOAA National Weather Service Storm Events Database (event 695143). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Blount County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.