The cold air pushing toward America’s heartland is of a duration and magnitude rarely seen since record-keeping began in the 1870s. In Minneapolis, forecasters warned that all-time wind chill records could be broken, with a stunning -65°F predicted for Monday morning…When these exceptionally wavy jet stream patterns occur mid-winter, it’s a recipe for cold air to get sucked southwards. This week, that’s happening in spectacular fashion. Climate scientist Jennifer A. Francis of Rutgers University explains this process in a short video.
/ / / How global warming can make cold snaps even worse