New BAM WX video says we're back into winter by mid-January. Here were my main takeaways from this video:
1. Dec 29-31 will trend colder, like it has been for the past few days.
2. He thinks there'll be a big storm favoring NE for the first week of January; his top analogs like 1996 and 2000
3. Somewhere between the end of Dec and the start of Jan, he thinks that WWBs will happen, causing:
- the death of La Nina
- -EPO by early Jan, but no +PNA
- MJO to move very quickly and finally get unstuck thru phases 2, 3, 4, etc., finally getting back into 7 by around Jan 15 (just in time for prime climo)
4. He likes the fact that the PV is on our side of the hemisphere, and he thinks it'll stay there
5. The models are not seeing the cold in the long-range
TL;DR: BAM WX believes that there will be a prolonged period of cold and stormy weather from Jan 15 to Feb 1. The first two weeks of January will likely offer shots of cold, but with relaxations in between.
Edit: he also mentions a lot about convections in the east asian mountains or something like that, but I have no idea what any of it meant so hopefully somebody more knowledgable can explain