Seven tornadoes touched down across northeastern Illinois and northwestern Indiana on July 27, 2026, as a line of powerful supercells moved through the Chicago metropolitan area during the evening hours. The National Weather Service's Chicago office confirmed five EF0 tornadoes and two EF1 tornadoes after a multi-day storm survey, with damage stretching from Glen Ellyn and Wheaton in the west to Lansing and Munster, Indiana, in the east.
The most severe damage came from the two EF1 tornadoes, both with estimated peak winds of 110 mph. One tracked 11.4 miles through Country Club Hills, Hazel Crest, Markham, Harvey and Homewood before dissipating near Glenwood, tipping over four fully loaded intermodal containers at a rail yard and tearing the roof off an industrial building along the way. The other crossed from Lynwood into Lansing and Munster, Indiana, damaging homes near Heritage Middle School and causing the event's only reported injury.
But straight-line winds, not the tornadoes themselves, caused most of the widespread damage. Gusts of 80–90 mph tore through a corridor of southern Cook and eastern Will County (Chicago Heights, Ford Heights, Sauk Village, Steger, Crete, Monee, University Park, Frankfort and Beecher), bringing down trees and damaging structures across a much wider area than any single tornado track. Hail up to 3 inches and flash flooding, with rainfall totals approaching 4 inches in spots, added to the damage.
Cook County Board President Toni Preckwinkle issued a disaster proclamation on July 30, citing flash flooding, structural damage, transportation disruption and widespread power outages. "Earlier this week, severe storms brought significant damage and disruption to communities across Cook County," Preckwinkle said. "My administration will continue standing with residents, supporting local recovery efforts and pursuing all available resources to help communities rebuild." The county's Department of Emergency Management coordinated generators, excavators and portable light towers across more than 15 municipalities, working alongside ComEd, the American Red Cross and the Salvation Army.
If your home was affected
Roof damage, downed trees, and wind-driven debris are exactly the kind of loss that turns into an insurance claim, and the fastest, least stressful claims are the ones where you already had a record of what you owned before the storm. If you haven't documented your home yet, start now: even a fast pass through each room with your phone is worth more than trying to reconstruct a list from memory after the fact.
If you weren't hit this time
Illinois' severe weather season isn't over, and storms like this one tend to arrive with little warning: most of these tornadoes were on the ground for just a few minutes each. That's exactly the kind of event where the only preparation that actually helps is the kind you did in advance. A documented home means that if the next line of storms doesn't miss you, you're not starting from zero.
We're glad to see Cook County moving quickly to support residents through recovery, and hope a tool like Homvi can be part of how homeowners in the region (and anywhere else severe weather strikes) get ready before the next one.