SnowGoose69

I am still slightly more worried about a miss than I am this coming too far NW. I think its highly likely all the snow droughts at the stations end though they may end with only like 1 inch if we end up with the more west track close to us

If we assume EPS too weak GEFS too strong but also too slow as its been recently we probably can blend the ensembles and it'l be less ridgy in the east. I guess its a question does the wave die before it really gets to 6. Ideally we probably want it to because if we have to survive even a weak push through 5-6 that takes us to 1/20 probably. I think there is a better chance of a +PNA late month if the wave dies in 5 or early in 6

It was discussed a ton in the MA forum the last year why it seems we now get an SER in patterns we never used to get it in before. Nobody really knows why

It just reeks of a setup that works with shorter wavelengths. I'd think its highly likely in early January its a miss but might work in late March

You'd need to avoid the overphase or early phase but its not too terrible

I would not even describe those as Nina...those long range ensembles would be torches everywhere...they are both 01-02/11-12 like minus the brief periods in those winters where we saw SERs...there's a ridge in W Canada and trof in the east as far as mean heights but there would be no cold aie.

Maybe but ensembles do not often really respond to MJO forecasts at D12-16 very much...its possible more than anything the GEFS for whatever reason was trying to revert to a Pac base state that in a Nino is just not likely to happen and as we move closer in the look changes. I was warning people 3 days ago to be wary of any strong push through 4-5 in an El Nino that might be showing signs of coupling more based on SOI in recent days...just like forecasts of a strong 8-1-2 wave last winter were not realistic

Its been too amped in a short sample size so far the last 6-8 weeks...it almost always does better than the EPS but it was way too amped on the wave forecast in mid december

If you scroll through the 12Z GEPS/GEFS it seems already at 360-380 its reshuffling out west and the low is retrograding back towards the Aleutians with slight building in heights over W Canada and the block in E Canada lifting north...its like if you can just run it to 480 hours we'd be right back to an eastern trof.

DT has torn into those calculations for years...he's shown how the -NAO stats can be wrong at times where you might technically have higher Greenland heights and lower Azore heights but its not really a -NAO, or certainly not one which impacts us in any positive manner for snow or cold

I am still suspect of any long duration -PNA pattern happening...depends largely on what the dynamics behind the change are but if its strictly based on the MJO going 4-5 I am far from sold it happens.

If indeed we are gonna torch or go mild for a time around 1/8 onward it makes sense we could see a big event just prior to that as the 12Z Op shows...1/5-1/7 might be where something goes down

It seems we no longer can get overrunning events with trofiness in the west. Events like December 84/90 January 89/December 08 just do not happen anymore....it seems everything just wants to super amp or undergo massive phases in those good overrunning type setups so you just get way too much mid level torching vs long duration overrunning to start. Many people mention how the coastal low track like January 87 has sort of vanished which is why people in CNY/CPA have struggled somewhat the last 10-15 years but the weaker/moderate SWFE seems to have sort of vanished too

I'll personally have this forum shutdown if this happens lol

You can see that on the 12Z Op run...snow verbatim nearby or overhead in what is really a 2009-2010 type air mass.

Meanwhile plenty of cold air exists in the hemisphere...Beijing just got to -6...their previous coldest ever temp in December was -1

It may end before that....it would have to be thread the needle or fortunate timing but there are chances for something to happen the final 10 days of the month

Underrated fact, the last few days the GFS is kind of getting owned by the CMC/Euro/ICON beyond 72 hours...we have legit not seen that since maybe the 2017-2018 winter on any consistent basis...probably something to do with more southern stream influence

If its from like 120-180 it can be a problem in this part of the country as very strong winds from that direction over 40-45 are less common, especially once just inland so the tree roots are not often as adjusted. Strong winds between 270-060 usually do least damage...once outside of that even without leaves you'll usually see more damage begin, especially with wet ground. I know in NJ we saw that in 85 with Gloria, we probably were gusting stronger from 340-020 but when we went 230-250 stuff started going down all over the place despite the speeds being less

Unfortunately that wave may complete its cycle before we really see things reshuffle enough to get legit cold air in place and the pattern setup as we want. Could be into the COD or even weakly into 3-4 by the time we reach 1/2-1/5 which is when I think we might have the Pac/Canada setup well. It could be partially why though we saw things turn better overall in the post 12/20 period after ensembles abandoned ship for 2-3 days last week,

It almost had to, GFS was on an island not really digging behind the storm whereas every other model was

The airmass is gonna be puke as a whole, at least at 276. But as you saw if you follow the Op run to 384 it gets colder as you more or less develop a -NAO/AO by that time

It may be correct as far as legit cold because even if the pattern flipped to a December 89 setup on 12/26 it would probably take Canada 10-15 days to cool off

At the time the 94-95 winter NAO average I think was the most positive on record...since the I think we have beaten it 1 or 2 times. The real killer in 1994 was the stratosphere was frigid...it was noted by some mets at the time in Oct/Nov that we might be in major trouble for the winter as it was just crazy how cold it was.

I was all over that one on the old forum. Never believed for a minute snow wasn’t going to happen once that low closed off. I was surprised how badly all the models missed it other than the GFS