On July 19, 1967, an an off-and-on riot in Minneapolis -- a crowd throwing rocks and setting fires -- starts at about 11:30 p.m. and lasts for two nights. Gov. Harold LeVander calls in 150 national guardsmen to maintain the peace. In the end, two people were shot, two policemen and one fireman were injured, 34 people were arrested and four businesses burned to the ground.
Severe storms, tornadoes possible in Twin Cities on Thursday
Strong winds, hail and tornadoes are threats in addition to flooding.