Event narrative (NOAA)
Periods of thunderstorms with heavy rainfall produced rain rates of 1 to 2.5 inches for at least two hours from 0630-0830 LST in northwest and central Champaign County - including the cities of Champaign and Mahomet/Lake of the Woods. The highest rain totals ranged between 6.00 to 7.00 inches from Mahomet to the village of Foosland. Nearly all rural roads in northwest Champaign County were flooded with at least a foot of water. Illinois Route 47 from Gibson City to Mahomet, U.S. Highway 150 from Mansfield to Mahomet, and U.S. Highway 136 near Fisher were closed due to flooding. Parts of Interstate 74 from milepost 168 to 173 were impassable. Numerous streets and viaducts in Mahomet and Champaign were also impassable. Many homes in Mahomet and Champaign also had significant basement floodin
Other notable flash flood events in Illinois
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.