Flash Flood in Jasper County, Illinois
Flash Flood June 21, 2026 · Jasper County, Illinois
Where the report was made, with tornadoes recorded within 15 miles over the years.
What the National Weather Service wrote
Water was flowing across IL-33 east of Newton, prompting the closure of 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 Falmouth (39.0118, -88.1211).
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 1351606. Narratives are written by the National Weather Service forecast office that issued the report.
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