Flash Flood in Effingham County, Illinois
Flash Flood June 21, 2026 · Effingham County, Illinois
Where the report was made, with tornadoes recorded within 15 miles over the years.
What the National Weather Service wrote
East 700th Avenue and East 500th Avenue east of North 2300th Street were closed due to water flowing across the roadway.
The wider storm
A remnant Mesoscale Convective Vortex (MCV) interacted with a sheared and unstable environment to produce numerous supercells in southeast Illinois on June 21st. 13 tornadoes were documented, the strongest being two EF-2 tornadoes near Newton. Storms training over the same areas led to widespread heavy rainfall and several occurrences of flash flooding.
Began near Winterrowd (38.9811, -88.3862).
Other tornadoes from the same storm system
12 more tornadoes the National Weather Service filed under this storm episode.
Source: NOAA Storm Events Database, event 1351608. Narratives are written by the National Weather Service forecast office that issued the report.
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