1:38 p.m.: A tornado warning in effect until 2 p.m. has been issued for Wigwam south of Colorado Springs. According to a tweet from NWS Pueblo, radar indicates a tornado has formed and quarter-sized hail also is possible. Tornado Warning continues for Wigwam CO until 2:00 PM MDT pic.twitter.com/kHatUZl3oN — NWS Pueblo (@NWSPueblo) June 12, 2023 More than 500 flights have been delayed at Denver International Airport on Monday due to thunderstorms across the Front Range. Twenty-seven flights have already been canceled, according to FlightAware.