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December Medium/Long Range Discussion


yoda
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Paul Roundy  @PaulRoundy1

The west Pacific warm pool is changing shape.
 
Eventually it will allow for more convection near the Dateline, which can favor western N. America ridges.
If the western ridge is far enough west, it can favor a central N. American trough and eastern ridge. 1997 Feb-Mar had eastern US ridging in spite of central Pacific convection.

142921519_G668Fy1WgAAXmvT(1).png.ca6d6a1708312fcc53c4c4fe4100cb2f.png

 

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I knew I had seen the surface maps showing surface Highs moving off the coast to our east and NE. I found it. Looks like we may hve to get used to it for the winter if the Euro seasonal is correct. The link below is for the period of Dec-Feb. If you scroll forward to J-M, it's even stronger. As long as we get better cold into the area, we should still have our shots at snow. Next week's problem is only being 3-4 degrees too warm, which is more a function of the early season.

https://charts.ecmwf.int/products/seasonal_system5_standard_mslp?area=NAME&base_time=202511010000&stats=ensm&valid_time=202512020000

 

ps2png-worker-commands-6588c4864d-zlhvn-6fe5cac1a363ec1525f54343b6cc9fd8-pazeobyi.png

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