- 77 below zero? Polar vortex yields deadly cold as thousands endure power cuts, travel issues mount in MidwestAccuWeather.com
- Polar Vortex Live Updates: Extreme Cold Weather Hits MidwestThe New York Times
- The polar vortex, explainedUSA TODAY
- LIVE TEMPERATURES: Chicago Weather: Polar vortex brings brutal cold, Wind Chill Warning in effectWLS-TV
- How dangerous (and historic) is the Polar Vortex hitting the Midwest? | TheHillThe Hill
- View full coverage on Google News