Severe storms sweep across the Midwest, disrupting travel and knocking out electricity for hundreds of thousands of customers, multiple outlets report. The storms affect the Chicago area, where flights at local airports see major delays and cancellations. One report says more than a thousand flights are delayed or canceled, while another notes that a tornado alert is in place for Chicago as the weather moves through. In addition to the flight disruptions, power outages occur across the region, impacting hundreds of thousands of customers. Authorities issue warnings and monitor conditions as the storms develop. Several outlets also note that additional, potentially more severe weather is expected to continue into Thursday, indicating that conditions remain unsettled. The combination of storm-related outages and airport disruptions leads to widespread travel interruptions for passengers in and out of Chicago. Overall, the reports describe a broad severe-weather outbreak affecting both infrastructure and air traffic, with tornado risk cited in connection with Chicago.