A tornado struck northeastern Wisconsin on Monday, blackening the midday sky and sending workers sheltering in office basements as fierce winds splintered homes

A tornado struck northeastern Wisconsin on Monday, blackening the midday sky and sending workers sheltering in office basements as fierce winds splintered homes, scattered twisted metal across a highway and knocked out power to more than 30,000 people. [▻](https://video.twimg.com/amplify_video/208…