Flash Flood in Saline County, Illinois
Flash Flood July 18, 2025 · Saline County, Illinois
Where the report was made, with tornadoes recorded within 15 miles over the years.
What the National Weather Service wrote
Approximately 8-10 of moving water was flowing across IL-145 south of Harrisburg. Radar estimated rainfall reached 1-2 in the area.
The wider storm
A surface boundary was positioned west to east across the Quad State during the early afternoon with convective activity increasing with daytime heating. Scattered convection primarily occurred south of the boundary mid to late afternoon. MLCAPE reached 2000J/kg but effective bulk shear was very limited. Precipitable water values over 2 allowed for torrential rainfall rates. Training storm occurrence was limited, leaving flash flooding south of Harrisburg as the one flood report out of Southern Illinois.
Began near Mitchellsville (37.6686, -88.5430).
Source: NOAA Storm Events Database, event 1304144. Narratives are written by the National Weather Service forecast office that issued the report.
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