A Closer Look at the Polar Vortex’s Dangerously Cold Winds
January 30, 2019
Temperatures will plummet to minus 26 degrees Fahrenheit in Chicago and minus 31 degrees in Madison, Wis., on Wednesday night — the worst cold to grip the Upper Midwest in a generation. Parts of Alaska, on the other hand, are unseasonably warm.
What is causing such extreme weather across the United States? The polar vortex, an ominous-sounding system of wind and cold air over the North Pole, broke apart this month. Here’s how it’s bringing dangerous cold nationwide.