Event narrative (NOAA)
Heavy rain producing thunderstorms affected Richland County during the late evening hours of August 20th and early morning hours of August 21st. Rainfall rates with the strongest storms exceeded three inches per hour. A trained spotter in Mansfield measured a storm total of 7.5 inches. An automated sensor at Mansfield Lahm Airport measured a total of 6.24 inches with 4.09 inches of this total falling between 2 and 8 am. A Cooperative Observer four miles east of Bellville measured a total of 4.30 inches with 4.37 inches measured by an automated gage at Malabar State Park. Runoff from this rain combined with ground already saturated from earlier rains led to catastrophic flooding across portions of Richland County. Local officials stated that the flooding in the county was some of the
Other notable flash flood events in Ohio
Source: NOAA/NCEI Storm Events Database. Deaths and injuries are those NOAA classifies as direct. Damage is the reporting office's estimate at the time and is not inflation-adjusted. This is a catalogue record, not a forecast.