A Deadly Bomb Cyclone Could Hit More Than 200 Million People by Christmas. Here’s What to Know

A massive winter storm that could bring “life-threatening” conditions is sweeping across the U.S. this week, threatening to affect travel for millions of Americans ahead of the holidays. Bitter cold temperatures are already being recorded across the midwest, great plains and south—hitting -16 degrees in Montana— and with six inches of snow already falling around the Great Lakes. Airports in Chicago and Denver are seeing severe delays with almost 1,700 flights canceled nationally as of Thursday morning.