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December Med/Long Range Disco


WinterWxLuvr

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Last nights euro ens run was pretty bad. Won't discuss it. 12z gefs looks variable but boring. I think we're probably going to have to wait a while unless something sneaky happens behind a fropa. Overall, first 10 days or so of Dec look average to maybe above temp wise on the means and unfavorable for organized snow. 0z euro ens had extended above average temps so I tossed it already.

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Last nights euro ens run was pretty bad. Won't discuss it. 12z gefs looks variable but boring. I think we're probably going to have to wait a while unless something sneaky happens behind a fropa. Overall, first 10 days or so of Dec look average to maybe above temp wise on the means and unfavorable for organized snow. 0z euro ens had extended above average temps so I tossed it already.

Correct me if I'm wrong Bob, but didn't the look for November flip pretty quickly? I remember it looked pretty warm at one point.

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Correct me if I'm wrong Bob, but didn't the look for November flip pretty quickly? I remember it looked pretty warm at one point.

It became clear the last couple days of Oct and the lead was in the d10+ range. However, heights over the pole and n of ak looked good before that. Just not for the conus.

Both the gefs and euro don't look so good in the Pac or Canada or ak for a favorable snow pattern right now and they have been holding the boring pattern for next week for days now.

I don't like that both ensembles warm canada up so much either. I agree that things can turn quick but right now there are no clear signs of anything with anomalous cold or favorable h5 for snow.

Looks like some progressive troughs move through at least. Pattern favors a west track and then cold fronts. If anyone sees things more favorable than I do, please jump in.

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It became clear the last couple days of Oct and the lead was in the d10+ range. However, heights over the pole and n of ak looked good before that. Just not for the conus.

Both the gefs and euro don't look so good in the Pac or Canada or ak for a favorable snow pattern right now and they have been holding the boring pattern for next week for days now.

I don't like that both ensembles warm canada up so much either. I agree that things can turn quick but right now there are no clear signs of anything with anomalous cold or favorable h5 for snow.

Looks like some progressive troughs move through at least. Pattern favors a west track and then cold fronts. If anyone sees things more favorable than I do, please jump in.

Everyone is counting on you to be the optimist ...  :P Your thoughts are much appreciated regardless of the message.

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Everyone is counting on you to be the optimist ... :P Your thoughts are much appreciated regardless of the message.

Ha! I'm optimistic that we'll see a decent pattern sometime in Dec. Just speaking specifically of the next couple weeks. When it looks tasty again, you know I'm on it. lol

Maybe we're just a snow town now and some flawed pattern will deliver again.

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Ha! I'm optimistic that we'll see a decent pattern sometime in Dec. Just speaking specifically of the next couple weeks. When it looks tasty again, you know I'm on it. lol

Maybe we're just a snow town now and some flawed pattern will deliver again.

I know  ... it is always evident in your posts. (I mean that in a good way) I look forward to reading some "tasty" analysis. I am in know way bummed about an early Dec. average/warm week or two. It can only get warmer or colder, and each possibility has it's upside. 

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December 2002 had a pronounced mid-month warm up for 10-12 days, and was sandwiched by solid winter conditions either side.  I much prefer this early winter pattern I think to the prospect of a December 1989 / 2005 where the pattern starts unsustainably cold and wears itself out in such a way we're pretty much forced to flip mild during what should be our peak winter climatology.  Basically, let the pattern relax and reload now and be ready for prime time around Christmas.

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Ha! I'm optimistic that we'll see a decent pattern sometime in Dec. Just speaking specifically of the next couple weeks. When it looks tasty again, you know I'm on it. lol

Maybe we're just a snow town now and some flawed pattern will deliver again.

This seems to be headed in the right direction in the long range:

post-116-0-59151400-1417035107_thumb.jpg

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This kind of look has been on the means for about 4-5 days now. It's not terrible because it wouldn't take much to switch things around but it's quite different that where we've been lately and looks to have legs. I don't think it's a sign of a permanent switch for the month of Dec or anything. Just that we'll probably start getting a little restless until it does switch around.

 

Euro ens 5 day mean for d11-15 for 500 heights and 850 temp anoms:

 

 

post-2035-0-82007700-1417035737_thumb.gi

 

post-2035-0-72467700-1417035771_thumb.gi

 

 

GEFS is showing some tendency for troughing in the east during the same period but it's not a cold pattern and it's similar with warm pac air flooding canada

 

post-2035-0-91684200-1417035825_thumb.gi

 

post-2035-0-66112500-1417035841_thumb.gi

 

 

The pattern starts before d10 and guidance has been steadfast in transitioning to a more pac air pattern early next week with limited cold outbreaks anywhere in the country. We'll probably see saw but putting up the kind of departures like we have recently seem pretty unlikely. Maybe a day after a front or something. 

 

Like winwxluvr said, the risk of changing on a dime is always there but I personally don't expect much to happen for the balance of the next 2 weeks. 

 

OTOH, this could all be part of a perfect relaxation before the hammer drops before Christmas with a HECS. 

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Just need that Aleutian low to retrograde back westward (eastward? Russia-ward) and that would pop the -EPO and force the vortex southward.  

 

 

Yea, and also get the scand ridge (or any ridge) pushing back towards Greenland. The combo of not so great atl and not so great PAC doesn't look all that appealing. We need at least one to be very cooperative or both to be decent in these parts. 

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This kind of look has been on the means for about 4-5 days now. It's not terrible because it wouldn't take much to switch things around but it's quite different that where we've been lately and looks to have legs. I don't think it's a sign of a permanent switch for the month of Dec or anything. Just that we'll probably start getting a little restless until it does switch around.

 

Euro ens 5 day mean for d11-15 for 500 heights and 850 temp anoms:

 

 

attachicon.gifeps5day.GIF

 

attachicon.gifeps5day850.GIF

 

 

GEFS is showing some tendency for troughing in the east during the same period but it's not a cold pattern and it's similar with warm pac air flooding canada

 

attachicon.gifgefs500.GIF

 

attachicon.gifgefs850.GIF

 

 

The pattern starts before d10 and guidance has been steadfast in transitioning to a more pac air pattern early next week with limited cold outbreaks anywhere in the country. We'll probably see saw but putting up the kind of departures like we have recently seem pretty unlikely. Maybe a day after a front or something. 

 

Like winwxluvr said, the risk of changing on a dime is always there but I personally don't expect much to happen for the balance of the next 2 weeks. 

 

OTOH, this could all be part of a perfect relaxation before the hammer drops before Christmas with a HECS. 

Shoot, I'm not doing a 2 week outlook this week or I'd steal everything you just wrote except for the xmas bit.

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Shoot, I'm not doing a 2 week outlook this week or I'd steal everything you just wrote except for the xmas bit.

 

I'm glad you're not then. Coming from me it's just weenie talk. Coming from you would be very sad...

 

I can easily deal with the next two weeks being ho hum. If it extends beyond it would push me to become more like Ji. 

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Just looking at the teleconnections and it looks solid for a developing +PNA. Some spread on where the AO goes but seems somewhat favorable towards negative. Quite a bit of spread on the NAO, so flip a coin...been so long since we have had any meaningful, sustained winter time blocking in the N Atlantic, I dont know if I would recognize it. So at least some signs of hope beyond the first week or so of Dec which is a lock for being uneventful. The CFS is a complete roasting for the month. Good thing... its likely wrong.

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It became clear the last couple days of Oct and the lead was in the d10+ range. However, heights over the pole and n of ak looked good before that. Just not for the conus.

Both the gefs and euro don't look so good in the Pac or Canada or ak for a favorable snow pattern right now and they have been holding the boring pattern for next week for days now.

I don't like that both ensembles warm canada up so much either. I agree that things can turn quick but right now there are no clear signs of anything with anomalous cold or favorable h5 for snow.

Looks like some progressive troughs move through at least. Pattern favors a west track and then cold fronts. If anyone sees things more favorable than I do, please jump in.

 

i like the powder (or semi-powder) we're capable of getting in january/early feb.  the problem with getting snow on the fringes like yesterday is you end up with marginal temps and snow that really doesn't stick well except for trees and grass.  i'm willing to punt december (or at least the first half) for a colder pattern in january that allows for greater snow chances.

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Finally a good pattern showing up on the 384hr GFS....semi-srs

I think we go 2-4 weeks of relatively uneventful winter weather before the large scale pattern becomes favorable, at which time the Eurasian snow cover/-AO/+PDO/+1-1.2 NINO all conspire for a decent pattern for the bulk of the winter.

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Lots of ensemble members have a cutoff day 15. With the strong packet it will probably be able rain.I don't see an end to the pactorch pattern in sight but I have faith midwinter will be good. Also with the - AO the pattern shouldn't be that hard to break.

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First half of Dec still looks pretty bad for organized snow chances. It could potentially be an example of a deceptive +pna/-ao numerical index. I'm less than enthused for now.

The only good thing is we enter the beginning of climo period for legit snow chances. The pattern looks blah overall, but not awful. Wouldn't be too surprised to see a sneaky chance pop up during the first 2 weeks of Dec,

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