Another arctic blast has sent temperatures plummeting across the United States, bringing “life-threatening” wind chills and dangerous cold to millions of Americans this week. The latest brutal cold snap is again courtesy of the polar vortex — a large area of cold air that spins over the North Pole — dropping some 3,

An extreme cold warning is out for parts of central and north Arkansas Wednesday night into Thursday morning for wind chill readings from -5 to -15 and a cold weather advisory has been issued for southern Arkansas.

An arctic blast will strike Austin from Tuesday night until at least Friday, the National Weather Service's Central Texas office said.