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Polar vortex
Will icy Arctic winds dip southward again this winter?
Many parts of North America endured an exceptionally harsh winter in 2013-14. As autumn sets in, weather agencies in the US forecast different outlooks for the coming season, building a healthy suspense over what to expect this winter
The Niagara Falls froze as temperatures dipped to -20C during the polar vortex of winter in 2013-2014 (Photo courtesy: Elvir K/Flickr)
Private weather forecaster AccuWeather forecasts a colder winter due to polar vortex; US Met office bets on El Nino
Two different weather models have different predictions for Indian winter
AccuWeather's senior meteorologist, Jason Nicholls, demystifies the polar vortex
Polar jet stream, or a pattern of strong winds, is shifting due to the melting Arctic, triggering extreme weather events across the globe
Cartoons and graphics by
Sorit Gupto
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