Storms knock out power for nearly 390,000 residents in the Midwest, as severe weather moves east

Damaging storms swept through the Midwest, knocking out power to hundreds of thousands of customers and causing more than a thousand flight delays or cancellations at Chicago airports with more potentially severe weather expected Thursday.The National Weather Service said it received more than a dozen reports of tornadoes Wednesday across northern Missouri, Iowa, Kansas and Illinois. There were no immediate reports of injuries or deaths.Weather service meteorologist Frank Pereira said the frontal system that produced the storms, including high winds and hail, was moving eastward Thursday. There was also a slight risk of severe thunderstorms in parts of the Northeast and Mid-Atlantic. The storms are being fueled by cool air from Canada clashing with warm, humid air from the South.“Going forward, we’re expecting another area of severe weather to develop across portions of the central Plains, Midwest, particularly from Iowa, northern Missouri, northeastward through the Great Lakes,” Pereira said. “Again, it’s all tied into a pretty well-defined frontal system.”Storms moved into the Chicago area on Wednesday afternoon, downing trees and damaging some buildings.The two major Chicago airports, Chicago O’Hare International Airport and Chicago Midway International Airport, temporarily put all flights on hold in the evening due to thunderstorms. A similar ground stop was issued at John F. Kennedy International Airport in New York due to thunderstorms.By Wednesday evening, more than 1,000 flights going into and out of Chicago had been delayed or canceled, according to FlightAware, a flight tracking website.Air traffic appeared to return to normal Thursday morning, with only 24 flight cancellations and 34 delays nationwide, FlightAware reported.Strong winds blew part of the roof off an apartment building in the Chicago area, forcing residents to leave, according to NBC 5 Chicago. Elsewhere, barns collapsed in Wisconsin, buildings were