CHICAGO (AP) — The National Weather Service says a tornado touched down near Chicago’s O’Hare International Airport prompting passengers to take shelter and disrupting hundreds of flights. There were no immediate reports of injuries. A confirmed tornado was on the ground around 7 p.m. Wednesday, according to the National Weather Service in Chicago. The National Weather Service had issued two tornado warnings for portions of the city Wednesday evening. Tornado sirens sounded at least twice across Chicago, warning people to take cover before the storm continued moving east into Michigan and possibly into Indiana and Ohio.