A Merciless Cold Lingers in the Midwest - The New York Times
Polar vortex set to plunge parts of US into deep freeze | AccuWeather
Polar vortex: Arctic cold blast coming for much of U.S.
Explaining the polar vortex sweeping across Midwest, plunging temps to record lows - YouTube
How the polar vortex created record subzero temperatures in the Midwest
Polar Vortex: Record Breaking Cold Descends on Midwest – DuroMax Power Equipment
Trapped in a "polar vortex": Midwest gripped by arctic cold - CBS News
Parts of Midwest colder than Antarctica during deep freeze | 13newsnow.com
Polar vortex: Historic cold descends on Midwest - The Washington Post
Polar Vortex Freezes Midwest With Lowest Temperatures in Decades
The U.S. is about to get a potent polar vortex blast | Mashable
Polar vortex: Historic cold descends on Midwest - The Washington Post
Too cold for mail: Polar vortex brings subzero temps to Midwest, USPS suspends service
Polar vortex 2019 hits Michigan: What you need to know
Break in La Nina, Stronger Polar Vortex Leading to Warmer January
/cdn.vox-cdn.com/uploads/chorus_image/image/62956146/DyAV_wOWsAADCyF.0.jpg "The polar vortex, briefly explained - Vox")
The polar vortex, briefly explained - Vox
Polar Vortex Causes Midwest States Of Emergency As Cold Pushes Farther South : NPR
 "Polar Vortex Makes US Midwest Colder Than The South Pole")
Polar Vortex Makes US Midwest Colder Than The South Pole
Residents across Midwest capture effects of polar vortex
Polar Vortex Spreading Arctic Cold Next Week
Midwest Polar Vortex 2019 Pictures and Videos | POPSUGAR News
Polar Vortex's End Is Near, Forecasters Say, Promising A Strong Warmup | Colorado Public Radio
What is the 'polar vortex'?
Deadly polar vortex blasts Midwest with record-breaking cold, forecasters warn to 'minimize talking' outdoors | Fox News
Brrr! Museums Across the Midwest Shutter as the Polar Vortex Drives Temperatures as Low as -51 Degrees
