A strong blast of Arctic air will drive temperatures sharply lower from the Midwest to the interior Northeast this weekend, bringing the season's coldest weather so far for many, forecasters say.

Arctic air is expected to bring “near record cold” along with “dangerous wind chills” as it tracks south from the Northern High Plains on Friday, spreading into the Central Plains and Ohio Valley on ...

Forecasts continue to point toward the Arctic polar vortex bringing chilling winds across swathes of the U.S. in the new year ...

Above: A Von Karman vortex street downwind of the Canary Island chain in the eastern Atlantic Ocean off the coast of Africa on Feb. 27, 2015. Image credit: NASA Worldview. Editor's note: Meteorologist ...

This price reflects trading activity during the overnight session on the Blue Ocean ATS, available 8 PM to 4 AM ET, Sunday through Thursday, when regular markets are closed. Chart does not reflect ...

This price reflects trading activity during the overnight session on the Blue Ocean ATS, available 8 PM to 4 AM ET, Sunday through Thursday, when regular markets are closed.

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