The ECMWF ensemble system and GFS ensemble system forecasts agree that we will see a pattern develop in the next 10+ days which will include two substantial bodies of high pressure in the northern Atlantic and Pacific. The Bering Sea will possess one half of the ridging system, while Greenland attempts to reel in the second component. These two ridges are then projected to split the polar vortex into two pieces, one of which will slide down into Europe, while the other pushes down into North America.
- See more at: http://theweathercentre.blogspot.com/2013/11/arctic-outbreaks-herald-start-of.html#sthash.p1XPkIDU.dpuf
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