Arctic weather alert

 Axios -An extreme weather pattern now hovering over the North Atlantic may boost the odds of a white Christmas this year for many Americans, Axios' Andrew Freedman reports.

• The powerful system — known as a "Greenland Block" — typically leads to cold and snow in the eastern U.S., parts of Europe and Asia.Conditions are reminiscent of the blizzard-inducing setup in 2009–2010.

🎄 The system, already bringing frigid temperatures to the U.K., gives the eastern U.S. an increased chance of snow between Dec. 20–30, after a period of unusual warmth. Share this story.