Snow and winds are likely to trigger flight cancellations and cause headaches for people traveling to DC for Inauguration Day.
The polar vortex is expected to reach the Utah-Idaho border sometime in the late afternoon and evening Friday as it continues to move south. As it moves through parts of the state, it will produce small snow showers, bringing more snow to the region before drier conditions return.
A disruption in the polar vortex is about to send an Arctic air mass from Siberia as far south as Florida. Yes, Siberia—and it’s as dramatic as it sounds. As many as 47 states will experience unseasonably cold temperatures. Some areas will be hit with dangerous wind chills as low as 40 below zero.
Dangerous temperatures are sweeping the country, with 100 million people from the Plains to the Northeast feeling the chill. Even those in the South will see some effects. Several cities have already declared weather emergencies,
These severe cold events occur when the polar jet stream – the familiar jet stream of winter that runs along the boundary between Arctic and more temperate air – dips deeply southward, bringing the cold Arctic air to regions that don’t often experience it.
The 10 Weather Impact team issued Alert Days for next week because of the polar vortex being responsible for the cold temperatures.
A major cold blast is in store for millions of Americans as a lobe of a polar vortex will bring brutally cold temperatures to nearly every American east of the Rockies.
The polar vortex is a ring of cold air that typically circles the Arctic. A strong jet stream essentially acts like a fence, keeping it locked there. If there's any weakening in the jet stream (the fence), the frigid air can become unstable and spill out. This sends the normally trapped cold air much farther south.
At least 204 flights were delayed Saturday morning at Denver International Airport, as snow and bitter cold brought by a polar vortex gripped the metro area. Nearly half of the flights — 101, as of 11:45 a.m. — belonged to United, according to flight tracking service FlightAware.
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People breach a police line whilst taking part in a national march for Palestine on Whitehall in central London. Eight people have been arrested, the rally coming after police curtailed organisers' pl