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Meteorologists blame a stretched polar vortex, moisture, lack of sea ice for dangerous winter blast
Meteorologists warn that a stretched polar vortex could bring severe winter weather to much of the United States.
Much of the nation east of the Rocky Mountains is hunkered down for what could be the worst winter storm of the season.
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Arctic plunge: Polar vortex locks in snow, ice and life-threatening cold behind historic cross-country storm
Behind the historic winter storm that blasted 40 states this weekend, a dome of Arctic air associated with the polar vortex ...
A polar vortex is expected to bring two surges of extremely cold air to the U.S. in January. Here's what to know in Middle ...
As a winter storm approaches Western North Carolina and other regions, here's what to know about deciphering forecaster terms ...
A snowstorm and harsh winter weather have impacted at least 177 million people across the US ...
The polar vortex is set to bring a winter storm to parts of Mississippi with ice, snow. But extreme cold will last for days.
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