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December Banter


WilkesboroDude

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As Allan pointed out to be over Twitter, 2010-2011 lacked +PNA....so we still don't know how much of a factor it will be if it never really gets there. I still think blocking is more of a deal breaker...I'd take a -NAO over a +PNA any day. I asked him if worrying about the +PNA so much vs the -NAO is a big deal, something along those lines. Some don't see a +PNA and cancel winter, I just don't see that completely. What we're currently seeing is a +PNA trying to evolve, whether it be neutral or + but too far away from the west coast, it's at least present in some form on the LR models.

Allan Huffman@RaleighWx

@_jwall Lack of +PNA does mean less chance of cross-polar flow and tap to cold air in NW Canada/Pole. But 2010-11 lacked +PNA. Still cold.

Nice Jon - and that would be the way I tend to lean. If Winter were voted on by two major parties, I would fall under this convention.

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Well everything's a problem right now...the AO is negative, but the placement of the pos/neg anomalies associated with the -AO are useless for getting cold air in here

From what I remember I think some thought the -AO and NAO would be stronger than it is and overpower the pacific. It's just not strong enough so far. I just figure, if the NAO keeps negative, the PDO has got to give a bit next month. That's my hope anyway.

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From what I remember I think some thought the -AO and NAO would be stronger than it is and overpower the pacific. It's just not strong enough so far. I just figure, if the NAO keeps negative, the PDO has got to give a bit next month. That's my hope anyway.

Just to clarify, the AO has been negative recently, but moreso favoring the delivery of cold air in other areas (away from the lower 48)...but the NAO hasn't been negative. It's been around neutral the past 2 weeks.

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From what I remember I think some thought the -AO and NAO would be stronger than it is and overpower the pacific. It's just not strong enough so far. I just figure, if the NAO keeps negative, the PDO has got to give a bit next month. That's my hope anyway.

I had (and still have) the same thoughts. At the end of the day, for me anyway, I would rather hang my hat on a solid AO/NAO relationship. Hopefully that will bear more fruit as Climo prepares to leave the dugout and get in the on deck circle. We're in the same boat on this one.

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in other news, I just found out my mother in-law is getting remarried and flying my wife and I out to the Bahamas in a few weeks for an all expenses paid vacation at the Atlantis! :sizzle:

Maybe by the time I am back from that the freezer doors will be wide open....... :shiver:

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Just to clarify, the AO has been negative recently, but moreso favoring the delivery of cold air in other areas (away from the lower 48)...but the NAO hasn't been negative. It's been around neutral the past 2 weeks.

That's about to change. Models show it at around -2 in a week. We will see if that is enough to overcome the Pacific. In my opinion, that is why the models are having so much trouble right now. It's very hard to know where the tipping point will be. If I had to guess it will be around -1 to -1.5. That will be dependent on whether the PNA stays where it is or trends less negative. Make no mistake, the AO/NAO is the major player in our winter cold chances. If the index is negative enough, it will not matter what the Pacific is throwing at us. Some may argue with this, but I have seen too many examples of arctic cold in the east with a -PNA.

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lrmodel.png

It's apparent what is happening here:

The Pacific is making war with some sort of blocking beast - who by the way is obviously preoccupied and cannot fight back.

Meanwhile, Bigfoots are corralling humans who are burning their hopes on a spit. I can only assume the cold has driven the 'Squatches out of the PNW.

That's a pretty good LR forecast in my opinion. We'll just have to wait and see if the Bigfoots are a good thing or a bad thing.

:lol:

in other news, I just found out my mother in-law is getting remarried and flying my wife and I out to the Bahamas in a few weeks for an all expenses paid vacation at the Atlantis! :sizzle:

Maybe by the time I am back from that the freezer doors will be wide open....... :shiver:

Awesome ^_^ Enjoy paradise ;)

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