Blizzard of 1978

Wikipedia user Jscott (CC BY-SA 3.0)

The Great Blizzard of 1978 was one of the worst storms in Illinois’ history. One-hundred-mile-an-hour winds whipped up snow drifts as high as 12 feet. Wind chills were so low they caused railroad tracks to buckle and break. Northern Illinois, especially Chicago, ground to a halt. And a couple of snowed-in computer nerds created a major technological achievement.