Thunderstorm Wind in Cass County, Illinois

Numerous large trees were uprooted, and many large tree branches and power lines were downed. Thirty nine structures sustained damage and most needed repairs to be returned to a habitable state. These structures included single and multiple family homes, mobile homes, and businesses. Three structures were a total loss.

A nearly stationary, west to east oriented, frontal boundary wobbled north and south across northern and central Illinois during the afternoon hours of the 21st into the early morning hours of the 22nd. The movement of the front was largely modulated by outflows from various thunderstorm complexes. A few of these storm complexes developed over or moved across central Illinois. One complex produced two weak tornadoes and several funnel clouds as it developed over east central Illinois during the early evening. Other storms produced damaging wind gusts, heavy rainfall, and small hail.