IE 11 is not supported. For an optimal experience visit our site on another browser.
We apologize, this video has expired.

Dangerous polar vortex plunges Midwest into deep freeze

02:54

About 85 percent of the nation is facing below freezing temperatures on Wednesday, and nearly half of those 230 million people could see a dip to below zero. TODAY’s Dylan Dreyer reports from Minnesota, saying “It’s certainly the coldest I’ve ever been.”