Over 120 million Americans will face extreme cold, with temperatures dropping as low as minus 40 degrees Fahrenheit.
The polar vortex is a ring of cold air that typically circles the Arctic. A strong jet stream essentially acts like a fence, ...
A polar vortex dipping down from Siberia will bring a cold front with frigid temperatures to nearly 300 million Americans.
A lobe of the polar vortex will arrive in the United States this weekend, bringing the lowest temperatures in years and snow and ice to the East and Deep South.
Dozens of US states will endure the lowest temperatures they have felt in years next week as a polar vortex brings ...
People living "basically anywhere from the Rockies eastward" will see extremely cold temperatures over the next several days, ...
The most unusually cold air in the Northern Hemisphere will be over the United States early next week, bringing dangerously ...
Stable polar vortex: When the stratosphere over the Arctic is cold, it's considered stable. The wind around the polar vortex ...