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Re: Cold air locked up in Canada until (at least) end of December/USA warm
Message from Sam TN
It's almost etched in stone that nearly everyone East of the Mississippi will have a very warm December (even the West should be at least average in many areas). This pattern will be very difficult to break and the polar vortex is very strong right now. It's going to take some very strong pulses of energy to reach the stratosphere up in the high latitudes to stretch this thing out and break it down. Right now, the pattern is such that it shouldn't happen for a good while, though I think eventually it will. By the time we see any significant change though, it may be getting closer to February. Even then, this El Nino should still be strong enough to keep any cold at bay and moderate it before quickly sweeping it out. Cold temperature extremes are going to be far and few in between this year.
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