- Polar vortex: death toll rises but weather begins to warmThe Guardian
- Significant warmup ahead for midwestern, northeastern US following invasion of extreme polar coldAccuWeather.com
- Analysis | The Energy 202: Polar vortex tests gas and electric systems in Midwest, Mid-AtlanticThe Washington Post
- Chicago weather: Polar vortex 2019Curbed Chicago
- Polar Vortex Continues To Grip Midwest And NortheastKPIX CBS SF Bay Area
- View full coverage on Google News