Tornado in Menard County, Illinois

Video shared by a trained spotter showed a brief tornado began in eastern Cass County south of Newmansville. Sentinel satellite imagery showed the tornado tracking for approximately 1.8 miles through Cass County before crossing County Line Road north of Pschirrer Road and continuing into western Menard County. The tornado continued for 1.3 miles before dissipating north of Newmansville Avenue. No damage was reported in either county, so a damage intensity rating could not be assigned.

A mesoscale convective vortex, or MCV, moved into central Illinois late on the morning of Wednesday, June 18th. Moderate instability developed ahead of this feature, and as scattered storms formed they quickly obtained rotation due to shear from the MCV. A total of 14 tornadoes occurred within the NWS Central Illinois county warning area, mainly west of I-55. One minor injury occurred when winds associated with a tornado tossed a woman against her home in Morgan County. Across eastern Illinois, a line of storms developed during the afternoon, mainly producing wind damage before shifting east into Indiana. A wake low developed after the MCV passed, resulting in a short period of non-thunderstorm wind gusts, generally between 45 and 55 mph. The highest non-thunderstorm wind gust associated with the wake low was 58 mph.