At the moment, a strong - but not very severe except in a few spots - squall line is situated in SW MN, moving NE. Over the rest of the morning, Minnesotans in the South of the state, including Minneapolis/St Paul, can expect these storms to arrive with up to marginally severe hail +...
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This mid-afternoon, though, expect this line to supercharge & be joined by a broken line of storms extending from Fargo to Minneapolis, then down south on the Mississippi River to roughly the MO-KY line (noted by solid white line on map)
By 00z or 1900/7PM CDT, expect the storms to roughly be at the dashed blue line, impacting metros like Duluth, Chicagoland, Milwaukee, Green Bay, Indianapolis, & Louisville.
By early morning tomorrow, the storms will be at the dashed white line, impacting Toronto, Sudbury, Buffalo, & Altoona... at which point they'll wash out soon after.
Have your storm gear handy, & remember several things: never drive thru flood waters (even in a truck!);