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Pattern The Great December Dump

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Ho Ho Ho


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South-based -NAO?
 
Wow just got a chance to see the 12z euro. What a track. That would be a super awesome snowstorm around many parts of the SE.... if it was cold enough. ?

This is just beyond depressing. In fact that will be solidly top five on the winter fail scale if it verified.
 

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Told ya!


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A tropical forcing flip sometime at the very tail end of Dec or early January is something I've discussed for nearly a month now on multiple occasions, nice to see it potentially coming to fruition.

Nov 18: "Looks like the pattern in that particular winter (1965-66) flipped sometime in early January & then the bottom fell out in mid-late January in eastern North America. Anticipating a pattern change somewhere in this timeframe seems to fit w/ tropical subseasonal forcing evolution, which I anticipate will return to the "favorable" phases (central Pacific & western hemisphere) again around early January "


Also looks like a convectively coupled Kelvin Wave is showing up on those EPS VP200 plots. As I noted a few weeks ago, this is one way we can really stir the pot near the holiday season and looks like we're gonna try to do exactly that as the EPO attempts to reverse near the turn of the new year.

"One way I envision that we could really stir the pot sometime around early January or the very end of Dec would be to have a convectively coupled kelvin wave dislodge itself from the Indian Ocean standing wave at the same time a -NPO/-EPO flip occurs"
 
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