Strength: The polar vortex strengthens in winter due to the deeper contrast between polar and equatorial temperatures and weakens in summer as temperature differences diminish. Normal Position ...
A polar vortex is currently hitting the United States, with schools closed in many areas and at least four deaths caused by ...
Ranked dead last, or perhaps not mentioned at all, would probably be the only state that sits partly within the Arctic Circle ...
Recent forecasts suggest some Americans might be getting a much-needed break from the freezing temperatures that have gripped ...
Much of the U.S. is being blasted by ice, snow and wind, as the polar vortex that dipped south over the weekend is ...
A strong polar vortex in the stratosphere has brought subzero temperatures to the Midwest, Mid-Atlantic and deep into the ...
Anytime we get an Arctic air blast down this far south, this is an artifact of the polar vortex rearing its ugly head,” said ...
A mass of air called the polar vortex has escaped the Arctic and plunged southward. Some scientists see the fingerprints of ...
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