27/07/2026
Significant severe thunderstorms are likely today across Chicagoland and northern Illinois, with two rounds possible. The first round will be in the mid-afternoon timeframe. This will be the main round of storms, with winds in excess of 80MPH possible with tornadoes likely to spin up along the leading edge.
Chicagoland needs to be on alert from approximately 1-4pm for the first round. Areas of northern Indiana need to be on alert from 2-5pm. This has the potential to become a derecho if things align properly. The rest of northern IL may be under the gun, but confidence in storm coverage is lower outside of Chicagoland. The I-80 corridor and south may see storms develop around 2-4pm, likely containing severe wind gusts but less of a tornado threat.
Stay safe today!
