psu talked about this. I would not weigh too much into the MJO forecasts at this time.
The blue color indicates a - NAM state, ie. HL blocking, and as mentioned here before, there is a tendency that even if the AO goes positive later in the month it will once again go negative , normally there are several cycles to this event on a time a scale going out to almost 60 days.
Also worth mentioning, the real impacts of the SSWE is not due to hit sensible weather for 20 to 30 days after the official wind reversal. So, the models may adjust to colder longer term if our area is favored for the Southern displacement of colder anomalies. If this occurs hopefully a baroclinic zone sets up near by and we can reap the benefits of increased probabilities of snow over rain.
I guess the bottom line is don't over react to model data in the long range, and set expectations within rational levels.