EF1 Tornado — Cass, Illinois

2021-07-10 · near Chandlerville, Cass, Illinois

2.4 mi

Path length

75 yds

Path width

Event narrative

A tornado touched down about 3.5 miles south-southwest of Chandlerville at 2:44 PM CDT. The tornado tracked northeastward along Illinois Route 78 from Palmerton Road to Philadelphia Road causing heavy tree and agricultural damage. A barn was flattened east of Palmerton Road. The tornado dissipated 1.2 miles south of Chandlerville at 2:51 PM CDT.

Wider weather episode

A Mesoscale Convective Vortex (MCV) generated by prior convection across Kansas and Missouri tracked into west-central Illinois during the afternoon of July 10th. Despite minimal instability, the enhanced low-level vorticity created by this feature was enough to trigger several rotating thunderstorm cells across west-central Illinois. Five brief tornadoes touched down across portions of Schuyler, Cass, and Morgan counties...with minor damage reported. Meanwhile further south, flash flooding occurred across parts of Clay County as thunderstorms with torrential rainfall skirted well south of I-70 during the evening.

View location on OpenStreetMap → (40.0071, -90.1816)

Source: NOAA Storm Events Database, event_id 966019. Narrative written by the NWS forecast office that issued the report.