Aug 12, 2021
A nearly stationary frontal boundary interacting with a moist environment triggered numerous clusters of strong to severe thunderstorms across north-central Illinois during the morning of August 12th. Locally heavy rainfall resulted in flash flooding across portions of McLean and Champaign counties, while a few of the cells produced hail as large as quarters. The activity eventually congealed into a linear structure, then began dropping southeastward across the remainder of central Illinois du
Source: NOAA National Weather Service Storm Events Database (event 978268). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in McLean County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.