“Chicago … will see a temperature rise of almost 75 degrees — from extreme cold of 20-25 below zero to temps in the low 50s on Monday.” As the Polar Vortex moves east, the hardest hit regions will see some dramatic warming. But first, more cold. Here’s the latest.

+ When even antifreeze is freezing. 26 Pictures That Perfectly Capture How Insanely Cold It Is Across The US. And here’s some of the weird stuff that people are doing to show the rest of us how cold it is in the Midwest. (Not even the coldest weather in a generation can compete with the burning human desire to go viral on social media.)

+ Minus 28 in Minnesota? Sounds like a good time for an ultramarathon.