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Pattern December to Remember

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Checking over the teleconnections this morning FWIW, they are starting to also trend towards a pattern change in the long range. They had been consistently showing positive AO an NAO, but are now biting. Here is the NAO, the AO was similar with a drop to neutral and than a lot of spread. The PNA also was trending more neutral but has more ways to go. Of course, like the operationals, they can be too fast with the change, but I have also seen them change on a dime.
 
Feb 2014 ?
I'm getting some feb 2015 vibes from it but really it's very similar to the epo ridge explosions that have been our main cold/snow driver the last 5-8 years. Have to wonder if we go warm for a period then a brief cool to cold shot leading into Christmas then another SER pump then the real cold drops
 
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