A cross-country storm will explode in strength as it moves over the central United States Friday, delivering extreme weather to millions through the weekend, including the chance of multiple strong tornadoes.

A sweeping storm system moving across the U.S. threatens to bring tornadoes, blizzards and possibly wildfires to different regions of the country.

The Storm Prediction Center has shifted the widespread severe weather threat just a little to the northeast, putting the very southwest corner of Lower Michigan in the chance of damaging wind gusts and even a strong tornado.