polar vortex

All 50 States Will See Freezing TemperaturesThe Arctic chill is gripping the Rockies and Upper Midwest — and it's crawling east.
All 50 States Saw Freezing Temperatures At Some Point TuesdayAn arctic blast eased its grip on much of the U.S. on Wednesday, with winds calming and the weather warming slightly a day after temperature records — some more than a century-old — shattered up and down the Eastern Seaboard.
Polar Air Brings Single-Digit Cold To East, South Fountains froze over, a 200-foot Ferris wheel in Atlanta shut down, and Southerners had to dig out winter coats, hats and gloves they almost never have to use.