EF1 tornado in Scott County, Illinois

Sentinel satellite imagery revealed this tornado began between Old Route 36 and Walnut Creek, approximately a quarter mile west of the Scott-Morgan county line and 1.5 miles west of Lynnville in Morgan County. The tornado tracked northeast, passing into Morgan County just south of Old Route 36. Most of the damage associated with this tornado occurred in Morgan County, but some flattened crops were noted in Scott County.

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.