https://www.cbsnews.com/chicago/news/blizzard-of-2011-remembering-the-groundhog-snowstorm/
Blizzard Of 2011: Remembering The Groundhog Snowstorm - CBS Chicago
On the afternoon of Feb. 1, 2011, snow began began falling with a ferocity rarely seen in Chicago.
blizzard of 2011the groundhogrememberingsnowstormcbs