Dangerous wind chills are wrapping up in Denver. Where does this cold air come from?
Cold air originating from the Arctic Ocean was dislodged earlier this week and spilled south across the United States. As a ...
Arctic retreat: Dramatic warmup across US, temps could surge nearly 90 degrees
Old Man Winter will begin to ease his icy grip on much of the central and eastern United States in the coming days and weeks, but there will still be some periodic outbursts from the Arctic, ...
Millions across U.S. face 'extreme cold' warnings as arctic blast sends temperatures plunging. Here's the latest forecast.
Dangerously cold temperatures will linger across the central and eastern U.S. through much of the week while another winter ...
California dodges polar vortex as most of U.S. braces for deep freeze
The majority of the country will wake to bone-chilling temperatures Thursday, with dozens of temperature records at risk of being broken. The massive outbreak of cold air is connected to the polar ...
Havre Daily News3h
What is a polar vortex? US gets a taste of the Arctic this week
The Associated Press The term “polar vortex” usually refers to the gigantic circular upper air weather pattern in the Arctic region. It is a normal pattern that is stronger in the winter and keeps ...
Rapid City Journal1h
Polar vortex makes much of US colder than Greenland, but warmth is coming. Then more cold
The polar vortex hit its peak across much of America on Wednesday, with an icy grip that made Arctic Greenland seem like a toasty vacation spot in comparison.
Polar vortex ushers in life-threatening cold for over 90 million as far south as Florida, Texas
The polar vortex has returned to the U.S., and frostbite-inducing temperatures are blasting millions of Americans.