Polar vortex 2019 hits Michigan: What you need to know
How Lake Michigan looks as Polar Vortex sweeps Chicago - The Washington Post
The polar vortex has kept Lake Michigan frozen for the most part of winter. For example, in Chicago, Illinois, temperatures reached -30C (-23F) during the peak of the cold, causing ice shelves
The 2013-2014 polar vortex adds data points to the books – Climate Change: Vital Signs of the Planet
Amazing images of Chicago and Lake Michigan from above during the polar vortex – Chicago Tribune
Polar Vortex Blasts US Midwest, Northeast with Record-Breaking Cold - 30.01.2019, Sputnik International