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.

19851121
19561203
19851116
19721207
19641123
20051202
19961113
20081214
20091207
19801203

[Daniel Boone]

2 hours ago, Carvers Gap said:

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

19851121
19561203
19851116
19721207
19641123
20051202
19961113
20081214
20091207
19801203

Couple duds in there. '72-73 and 08-09.

2005-06 slightly above Temperatures with slightly below average Snowfall. Very Mild January.. 85-86 was great. below average Temps, above average Snowfall. 64-65 was average with above Snowfall. 96-97 avg Temps and Slightly below Snowfall. 08-09 slightly above Temperatures, below average Snowfall. 80-81 below Average Temps, above Snowfall. 09-10 great. Below average Temps above average Snowfall.

   John, you probably have more detailed information in these.