Superbowl weekend GEFS is a bit slower but also a little farther off the coast, farther S with the ULL, and colder than the GFS op implies. Probably doesnt mean a whole lot 200 hours out and we know the preceding storm(s) or lack thereof will affect this one. But for purposes of my morning coffee I am glancing ahead if for no other reason than kicks and giggles.
Still maintaining my thoughts on an evolution to a better (brief?) Atl side with winter storm potential between the 6th and the 13th give or take a day either side. NAO ridging continues showing up on many of the ens with a positive PNA, active stj undercutting the PNA, and just enough cold air around. I think what allows the NAO to build if only for a brief period is the relax of the Hudson Bay PV over into AK allowing for the weaker remaining lobe of the PV to be pushed around. Sucks we cant seem to get both sides (Pac/Atl) to coincide a bit better but it is what it is. As we get later into the season I expect more HL blockiness to develop near the NAO as the weakening PV will be allowed to get displaced with more ease. If we can get the EPO to pop in tandem that is a look I would embrace. Last pic is the GEFS ens mean showing the NAO ridge which the EPS was implying as well during this period.
GFS op:
GEFS:
GEFS mean east basedNAO/N Atl ridge: