- Polar vortex to freeze US upper Midwest and Northeast CNBC
- 75% of the US will suffer below-freezing temps this week CNN
- Polar vortex: ‘Life-threatening’ wind chills arrive in Midwest starting Tuesday The Washington Post
- Snow pummels Midwest as millions prepare for life-threatening cold NBCNews.com
- LIVE RADAR: Chicago Weather: Winter storm dumps several inches of snow across area WLS-TV
- View full coverage on Google News
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