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December Medium/ Long Range


Terpeast
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2 hours ago, Ji said:

dont let PSU get you down too much. We have had decent winters following a moderate to strong Nino. Not great but fine. 2004-05 wasnt bad. 2010-11 wasnt bad. 87-88, 95-96 wasnt that bad....87-88 wasnt horrible.....2016-17 was a disaster 

We have…but most of those years you mentioned were horrible PDO matches and not good enso either. Remember a stronger Nina is actually better for us oddly enough. 
 

05-06 did barely make it into my analogs and it was the best result among them. But it really wasn’t a great PDO fit. 
 

96 and 2011 both happened during opposite PDO cycles to where we are now. 
 

Unfortunately if you look at weak cold enso events in a strongly -pdo cycle there are no snowy years. The best we could hope for would be a year like 2022 that is just a little below avg snowfall across the region. (Yes I know a few local areas bad above normal they don’t need to remind me every time but all the reporting stations were below avg).  
 

But the majority of -pdo cycle weak cold enso years were single digit snowfall.  It’s frankly the worst combo we can have for snowfall. But we can root for a fluke. We only have a sample size of like 10.  I’m sure if we had 100 chances 1 or 2 fluke snowy results would happen. And most years did have at least one snow event so I don’t think a total shutout like 2023 is likely. 

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23 minutes ago, NorthArlington101 said:

Anyone who falls the for the trap that it can snow in December in the lowlands anymore is stupid…

 

IMG_2068.jpeg.22edfa31d5288686249ea218ccc385ac.jpeg

 

 

Obviously it can we just need an actual storm. Not like it’s snowing anywhere close to here anytime soon besides far north. 

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5 hours ago, psuhoffman said:

If you pull back and stop focusing on our locations specific snow chances the biggest issue I see is this…

We need cold anomalies to snow. Our coldest day of the year has an avg high near 40. But if you simply look at a 5 or 10 day mean temp anomaly for the whole northern hemisphere the warm expanse outnumbers cold by 2 and sometimes 3-1 across the mid latitudes. 
 

We got lucky recently that one of the small (globally speaking) pockets of cold did end up over us for a week, but how often are we going to win if we need cold and 2/3 of the whole hemisphere is warm at any given time?

This has been the normal now for the past 5 years it is basically exactly the same. Winter for 2-3 weeks and then it is over. 

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4 hours ago, psuhoffman said:

For most no.  But it’s worth saying that there comes a point, and we aren’t there yet, where it won’t even matter what the pattern is. It just won’t be cold enough unless we get increasingly anomalous setups. 

Honestly, I think that is what we are on the cusp now and will only heighten in time. 

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4 hours ago, Ji said:

dont let PSU get you down too much. We have had decent winters following a moderate to strong Nino. Not great but fine. 2004-05 wasnt bad. 2010-11 wasnt bad. 87-88, 95-96 wasnt that bad....87-88 wasnt horrible.....2016-17 was a disaster 

I'm still not ready for a world where Ji is the one trying to keep everybody optimistic...

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4 hours ago, Ji said:

Yea, keep checking back to I can get hits on my site for something that is not going to materialize.  It's getting old and it is the same old dance. All about ratings.  I would say check back two days before it snows not 384 hours. 

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3 hours ago, Ralph Wiggum said:

Dr. No is, and has always been, a c*ck tease. 

I fully expect it to show a flush hit next run then take it away never to be seen again in usual Euro fashion.

Actually, that is most models over the past 4-5 years.  The models give you hope of what winter looked like 10+ years ago then it reverts to the WARM PACIFIC REGIME!  Nothing new really.  I mean case in point 12z GFS showed PD3 near or just before Christmas where are you now. 

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Anyone who falls the for the trap that it can snow in December in the lowlands anymore is stupid…
 
IMG_2068.jpeg.22edfa31d5288686249ea218ccc385ac.jpeg
 
 

I’d be with stupid more often if we get a pattern where storms actually traversed south of our latitude.
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7 minutes ago, Kevin Reilly said:

Actually, that is most models over the past 4-5 years.  The models give you hope of what winter looked like 10+ years ago then it reverts to the WARM PACIFIC REGIME!  Nothing new really.  I mean case in point 12z GFS showed PD3 near or just before Christmas where are you now. 

As of now, the NPAC is much more favorable than it was just a Month ago. Cooled substantially in the WPAC and warmed in the GOA. This should help with the -EPO as it should shunt the Nina augmented Pac Ridge further East. How long those cooler SST'S remain in the WPAC is up for debate but at any rate should be a good while imo. 

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8 hours ago, Maestrobjwa said:

Lol Hey could ya blame me? :lol: But nah not obsessively--but I have been hoping that one of these years it would finally start to cool off...and of course we're hoping that -PDO will finally relent! (I'm unclear on how the two are connected if someone could chime in on that. I just know that the warm pool has been a part of said pain in the butt).

The West Pac warm pool is in the equatorial region east of Indonesia.  It is potentially connected to the MJO.  Specifically, the expansion of the warm pool over the last decade or so is thought by some to be a driving force in the strong bias to the "bad" phases of the MJO (i.e. 4-6) observed in that time frame.  Meanwhile the PDO is a pattern of observed temp anomalies in the North Pacific.  As to how/if they are connected, my blanket assumption in weather is that everything is connected to everything.  In any event both conditions appear to be positively correlated to greater prevalence and intensity of southeast ridges and hence east coast snow weenie tears.

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Obviously it can we just need an actual storm. Not like it’s snowing anywhere close to here anytime soon besides far north. 

Also, pretty sure the lowlands technically saw some snow in late November. Didn’t accumulate but it was snowing in places like Columbia and points N. It’s clearly possible. Difficult? 150%. A big storm? Even less likely. But not impossible.
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5 hours ago, cbmclean said:

So you don't want a high of 3.06 °F near DC and 2.98 °F near Baltimore?

If that turns out to be the 2m departure from average map Ji will post it with “Merry Christmas one and all” caption..and I will promptly shit my own blinds

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