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

As new Arctic air enters the United States, NWS meteorologists warn about the “most intense” snow storm of the season.

Temperatures will plummet by up to 40 degrees this weekend as an arctic blast spreads across much of the U.S., including the Deep South.

Some areas of the U.S. may see temperatures as low as -20 or -30 degrees early next week as arctic air from Siberia rolls in.

Brutal cold will open the door for a winter storm to take a somewhat unusual track through the South and create treacherous conditions.

As a massive winter storm is rolling through regions of the United States on Monday, see pictures of snow from across the Midwest and East Coast.

Jan. 19 (UPI) -- On this date in history: In 1861, Georgia voted to secede from the Union and joined the Confederacy. In 1920, threats against the life of Attorney General A. Mitchell Palmer, because of his activities in suppressing criminal radicalism, led officials to take every precaution to guard the head of the Justice Department.

A federal appellate court has agreed with opponents of the Deferred Action for Childhood Arrivals program that it is illegal, but in its ruling limited the focus of an injunction to the state of Texas.

Dangerously cold weather spread over the Midwest on Saturday and is headed toward the East Coast, where temperatures well below seasonal norms are expected starting late Sunday and into next week.

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.

Firefighters are working around the clock to contain the Palisades Fire and Eaton Fire. Thousands of people were forced to evacuate when the blazes ignited and destroyed more than 12,000 structures. Here are the latest updates.

Reliance on Russia’s military offerings has become increasingly prevalent in parts of Africa, amid an aggressive push by Moscow to lessen Western influence on the continent.