by his snowcover logic or whatever shouldnt have 2022-23 winter been a cold and snowy one for the EC bc of how cold the continent was in dec??
thats like saying why do we have summer if winter is so cold
now starting to retrograde westward, nice +PNA signal and overall good slider pattern, significantly better w/ shifts towards the EPS, still got a lot of work to do, but now we're building heights in W Canada/E AK as well as nice confluence
yes but generally we have been missing that, 2022 had a favorable pattern in Jan
besides 2019/2022 past 7 years haven't been really good here(except 2021 for northern areas?)
compare to last up period for NE US
without snow cover build its going to be hard to get sustained cold, however if the model progression of retrograding heights westward into the EPO/PNA domain and even getting some height builds in NAO domain it will eventually improve
the 28th-30th airmass seems just cold enough to snow; marginal but could work
are you referencing aleutian lows putting pressure on the SPV bc those are typically caused by jet extensions
although +EAMT classic evolution is one that builds HP over the Urals that becomes advected eastward to be in E/SE Asia, therefore causing an +EAMT event so it could also be that? idk fs tho
speaking of, the weak SPV will help with overextension concerns and should bully the jet to retract back eventually, but i would be skeptical of pattern changes too quickly as models may be running through them too quickly
w that being said, we will def progress eventually, my bet is early-mid jan; remember nino winters really start in the EC after MLK day