Polar vortex about to blast U.S. with coldest air of the season

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The Siberian Express will ride again next week, as frigid air pushes across much of the U.S. with temperatures in some places dropping to as much as 50 degrees Fahrenheit below average for this time of year. 

The cold will come courtesy of two main weather features — a wobble in the upper level polar vortex that will pull cold air out of Siberia, Alaska and Canada, 

While this will be a headline-grabbing event, with temperatures remaining below zero Fahrenheit for the daytime high across the northern Rockies, parts of the Plains and Midwest, it is not likely to equal or beat the severity of the January 2014 Polar Vortex event.  Read more…

More about Winter, Polar Vortex, Extreme Weather, Science, and Climate

Arctic air poised to invade the U.S. after record warm November

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The fall of 2016 has been astoundingly warm across much of North America, but indications are that this is about to change in a big way.

So, consider yourself warned. 

November will go down in the record books as one of the weirdest such months on record, with North America’s climate stuck on “roast,” at least compared to average temperatures for this time of year, the Arctic setting records for unusual warmth and low sea ice coverage, and Siberia locked in snow and cold that is even frigid for, well, Siberia. 

It now appears that some of that cold, though not the heart of it, is poised to slosh eastward and then south, into Alaska, Canada and the U.S.  Read more…

More about Science, Global Warming, Weather, Jet Stream, and Polar Vortex