Aug 5, 2025
Anomalously high deep layer moisture over the area with strong moisture transport. Isentropic lift and favorable divergence aloft in the right entrance region of an upper level jet streak supported widespread rain which was moderate to heavy at times. This led to isolated flash flooding.
Source: NOAA National Weather Service Storm Events Database (event 1270599). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in McCormick County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.