All this old Florida boy can say is WOW! Temperatures Plummet to -75 Degrees F in North Dakota https://www.theepochtimes.com/temperatures-plummet-to-70-degrees-f-in-north-dakota-as-polar-vortex-starts-report_2782153.html “Historic cold, unprecedented cold, these are all adjectives you could use to describe this.” Chicago, meanwhile, is forecast to be among the worst-affected cities. Temperatures in the Windy City will be below places in Antarctica, Siberia, and Greenland. “You’re talking about frostbite and hypothermia issues very quickly, like in a matter of minutes, maybe seconds,” 25 Million colder than 20 below zero! 250 Million population in Lower 48 will experience a freezing temperature (32°F): 73%  90 Million will be 0°F or colder! Over 1/4 of all Americans. 6% at -30°F or colder! I was doing some work in Rochester, Mn back in the 90's.  It was somewhere around -20 degrees out side.  On this morning, when I arrived at work,  I had to park a good ways from the entrance door.  Being from Florida, I had never experienced anything colder than the high teens, so my thinking, as I got out of my car with my Florida winter jacket was, I am only going to be outside for a couple minutes, so no problem.  Well, I was mistaken, and I came to realize that had something gone wrong, had I not made it too the door fairly quickly, I could have been in trouble.  Extreme cold is nothing to mess around with is what I learned, at least when your from Florida.