December 2025 Short/Medium Range Forecast Thread

[John1122]

We are now into December with the OP runs. The first 7 to 10 days of December are likely to be warm, with a possible brief cold shot or two.  After that, we have some potential factors that would introduce cold into the pattern. A cooperative MJO, a well place EPO ridge, a weaker than normal, if not split, SPV, all look possible as we head into the period of December 15thish towards the end of the month. 

 

See Carvers Weeklies post in the fall thread for what December looks like when the Euro has the MJO moving through more favorable areas.  

[Carvers Gap]

D8-14 analogs from CPC today.  Really pulling for the Dec 09 thread to be THE analog.

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