The intense cold snap about to settle over most of Canada and the U.S. has been dubbed a “polar vortex’, but Environment Canada Senior Climatologist David Phillips says it could just as easily be called “Arctic air or Siberian air.”

The most unusually cold air in the Northern Hemisphere will be over the United States early next week, bringing dangerously frigid conditions.

The polar vortex will soon elongate over North America with a dangerous cold moving into sections of Canada and the U.S.

The plunging polar vortex brought subfreezing temperatures ... along Texas’ border with Mexico, to 31 degrees, with an expected wind chill factor ranging from 0 to 15 degrees early Wednesday ...

The Arctic polar vortex has been pushing icy winds throughout ... States included parts of Texas, Louisiana, New Mexico, Arizona, Nevada, Utah and Colorado, as well as New Jersey, Pennsylvania ...

The NWS has issued the warnings as a powerful polar vortex continues to make temperatures plunge nationwide this week.

(AP) — The plunging polar vortex brought subfreezing temperatures ... along Texas’ border with Mexico, to 31 degrees (minus 0.5 Celsius), with an expected wind chill factor ranging from ...

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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.

The National Weather Service in Springfield said Wednesday afternoon that it is putting Southwest Missouri and Southeast Kansas under a winter weather advisory from 5 p.m. Thursday to 6 p.m.

LOS ANGELES — Massive wildfires roaring through the Los Angeles area left neighborhoods in ruins Wednesday, killing at least two people and threatening landmarks made famous by Hollywood as desperate residents escaped through flames, hurricane-force winds and towering columns of smoke.