Good post about the MJO from @GaWx in the ENSO thread today.
“Just like yesterday, the GEFS and EPS disagree on how long the MJO will stay in phase 8:
GEFS: only 6 days though it returns for rd 2 on 12/18:
But the EPS, which recently has been much steadier and has been verifying better than GEFS since phase 7, once again is going with a very long phase 8 (16+ days, longest in 50 years): you can’t place an MJO better than this in Dec for E US cold lovers (and it looks to be cold the next 10 days per models though one must remember that there are always other factors to consider due to the complexity of the atmosphere):”