If you thought you were cold last week in the Midwest, think again. A "polar vortex" is about to descend on much of the country and will bring with it frigid, record-breaking temperatures. Think massive drops below zero, icicles on the eyelashes, and car doors stuck shut. Some schools have even closed for the first time, not for snow, but for cold.
A "polar vortex" is essentially a whirlpool of frigid, dense air, almost like a tornado of cold. And though they usually stay away from populated areas, this time it won't because the winds that usually keep it contained are absent and so the cold will be moving far afield. To us. Brrr. It could feel as cold as -60 degrees F in some places.
But it's winter, right? Who cares? Well, this is potentially "life-threatening" according to the National Weather service. Here are five reasons to be scared: