Jun 21, 2021
An upper level trough brought a cold front to the region. Ahead of this cold front, moisture levels through the atmospheric column increased to above the 90th percentile for this time of year. Ample instability in place combine with the abundant moisture and lift from the frontal boundary set the stage for numerous thunderstorms producing heavy rainfall and flash flooding.
Source: NOAA National Weather Service Storm Events Database (event 968109). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Harrison County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.