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January 2014 pattern discussion


CapturedNature

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If EC ensembles are correct, Leon lives another day. If GEFS rules, he's done.

I'm favoring euro with the loading ssta in the NPAC.

The wise play is to favor neither and assume both will be partially right. Ie more of the same. The only question is are we more torchy with brief interludes of cold or are we cold with the random but repeated brief torch?

I don't see either one dominating though. More of the same.

I don't think you can blend this. It's either cold or a furnace. If you are choosing more of the same, it's ECMWF.

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I actually think the GEFS might be wrong. They are the only model suite support a medium MJO phase 6...whereas the rest are keeping it low amplitude phase 7 (Ukie maybe medium amplitude). The latter would favor the more poleward PNA/east-place EPO ridging....the former favors the flatter look fo the GEFS.

 

I guess if we get a robust forcing from the tropical pacific liek the GEFS want to imply, then we could shuffle the pattern that way...but if not, all else equal, I would want to favor the more robust PNA/EPO look with the strong warm pool in the GOA.

 

Hmm I actually wasn't really considering the phase diagram forecasts here with regards to the MJO, and I didnt see the gefs running into 6 everything looks in the circle, what shows that? these phase diagrams have really been useless this winter.

ALL_emean_phase_full.gif

 

Anyhow I've been using Ventrice's site to diagnose the Trop forcing across the central/east pacific right now and I think that is well in support of this PNA/colder pattern we have returning in the next week-10 days..After that we will see what happens but it seems most favorable tropical wise in the next 1-2 weeks. I'm not necessarily saying a torch for new england or the southeast beyond this stretch in the 10-15 day, it just definitely looks like the really cold air masses may be on their way out of NA, or a pv lobe hanging around baffin island

 

The EC ensembles probably would match the weeklies fairly well. I don't care about cold, just that hopefully it's a nice pattern in terms of storms. My feeling is that the Plains warm significantly, but the polar shots are more for the northeast this time around. I don't think we will see the magnitude of the cold like we've had (although I can't rule out something very cold after the 20th), but it sort of looks more "polar" in nature instead of "arctic" if that makes any sense. However, if you take the EC...that is a polar plunge into the northeast US...I just don't know if it will be like what the EC models.

 

Scott we are pretty much in agreement I think. I'm wondering if the final stretch of Jan really starts to warm up, but I could see new england hang on to more "polar" type cold shots even then..

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Hmm I actually wasn't really considering the phase diagram forecasts here with regards to the MJO, and I didnt see the gefs running into 6 everything looks in the circle, what shows that? these phase diagrams have really been useless this winter.

ALL_emean_phase_full.gif

 

Anyhow I've been using Ventrice's site to diagnose the Trop forcing across the central/east pacific right now and I think that is well in support of this PNA/colder pattern we have returning in the next week-10 days..After that we will see what happens but it seems most favorable tropical wise in the next 1-2 weeks. I'm not necessarily saying a torch for new england or the southeast beyond this stretch in the 10-15 day, it just definitely looks like the really cold air masses may be on their way out of NA, or a pv lobe hanging around baffin island

 

 

Scott we are pretty much in agreement I think. I'm wondering if the final stretch of Jan really starts to warm up, but I could see new england hang on to more "polar" type cold shots even then..

 

 

I got the GEFS ones from the CPC site:

 

 

 

NCPE_BC_phase_21m_small.gif

 

 

 

 

 

I could definitely see a warming right near the end of the month, but the GEFS aren't even showing that, they are showing a much much milder pattern for just about everyone by Jan 20th, so a lot sooner...New England is prob still average to perhaps slightly below...but the plains/midwest/lakes are all furnacing by that point.

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I don't think you can blend this. It's either cold or a furnace. If you are choosing more of the same, it's ECMWF.

If the euro is right we will lean cold with some warm shots (similar to now but maybe not as extreme) if the Gfs is right probably more even with both warm and cold periods of equal intensity and duration.... In reality both probably are indicating that areas well west and southwest of us won't be as bad off this time but we should still do okay.

My gut days is powder freak and dendrite cash in later this month while i get wet.

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I gotta think you tone back the GFS and GEFS a bit. I'm not so sure they have the tropical PAC down and if they don't..then all bets are off. So my concern I guess is if they are somewhat correct..we may lose the cold in Canada and  have more marginal air to work with. That being said, I like the overall look for now in our neck of the woods. It definitely could be a Miller B type pattern as long as the ridge axis out west is not too far east.

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I got the GEFS ones from the CPC site:

 

 

 

NCPE_BC_phase_21m_small.gif

 

 

 

 

 

I could definitely see a warming right near the end of the month, but the GEFS aren't even showing that, they are showing a much much milder pattern for just about everyone by Jan 20th, so a lot sooner...New England is prob still average to perhaps slightly below...but the plains/midwest/lakes are all furnacing by that point.

 

Yeah the GEFS erase the belows in the Great lakes/new england by the 23rd and that seems quick.. I just think they are hinting at where we might go with this. As for that mjo/tropical stuff, im not sure exactly where we head by the end of jan but I'm pretty sure it will be out of the central/pacific/SA which is where we are heading accoridng to Ventrice's CHI plots. Im not saying the gefs from what you show are right, but they seem to agree with roundy's prediction here perhaps? (around the 21st)

 

2014.png

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Yeah the GEFS erase the belows in the Great lakes/new england by the 23rd and that seems quick.. I just think they are hinting at where we might go with this. As for that mjo/tropical stuff, im not sure exactly where we head by the end of jan but I'm pretty sure it will be out of the central/pacific/SA which is where we are heading accoridng to Ventrice's CHI plots. Im not saying the gefs from what you show are right, but they seem to agree with roundy's prediction here perhaps? (around the 21st)

 

2014.png

 

See I thought looking at that and his week 1 and week 2 850/OLR products argues for more ridging further west and not such lower heights into AK. Basically more Euro or further west with ridging? You could kind iof see how the EC wanted to raise heights a bit further west if you extrapolate past hr 360. If look at the GEFS...you can also see that Kamchatka trough reform and possible argue for a retro of that ridge too. Maybe it is something like flooding the CONUS with warmth before ridging shuffles and reforms further west. Just talking out loud.

 

http://www.atmos.albany.edu/facstaff/roundy/waves/wavemaps/weeks1to2.png

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The wise play is to favor neither and assume both will be partially right. Ie more of the same. The only question is are we more torchy with brief interludes of cold or are we cold with the random but repeated brief torch?

I don't see either one dominating though. More of the same.

I agree , just did my next six week outlook from the 19th on, basically  2 weeks of cold  and snow chances, 7-10 day thaw then back to normal then a snowy cold end to Feb. Lets see how it plays out. I do think it will be stormy.

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See I thought looking at that and his week 1 and week 2 850/OLR products argues for more ridging further west and not such lower heights into AK. Basically more Euro or further west with ridging? You could kind iof see how the EC wanted to raise heights a bit further west if you extrapolate past hr 360. If look at the GEFS...you can also see that Kamchatka trough reform and possible argue for a retro of that ridge too. Maybe it is something like flooding the CONUS with warmth before ridging shuffles and reforms further west. Just talking out loud.

 

http://www.atmos.albany.edu/facstaff/roundy/waves/wavemaps/weeks1to2.png

 

Yeah I see what you are saying and that would make sense if roundy/gefs were correct.. Hadnt looked at roundy or noticed that gefs mjo forecast when I made my original post. Original post was based off of where we are at now in the trops, guessing where we would be heading..and also noting the stratosphere forecasts. Notice the shift in alignment from the stable NA-Siberia axis we've seen early winter , I am assuming that 360hr panel is a good reflection of more north pac troughing and the pna ridging possibly spilling over more of NA, but I could be wrong there.

 

post-402-0-13632700-1389202505_thumb.png

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Yeah I see what you are saying and that would make sense if roundy/gefs were correct.. Hadnt looked at roundy or noticed that gefs mjo forecast when I made my original post. Original post was based off of where we are at now in the trops, guessing where we would be heading..and also noting the stratosphere forecasts. Notice the shift in alignment from the stable NA-Siberia axis we've seen early winter , I am assuming that 360hr panel is a good reflection of more north pac troughing and the pna ridging possibly spilling over more of NA, but I could be wrong there.

 

attachicon.gifstratcast.png

 

I honestly don't know what guidance is right or wrong...just trying to see why one set is showing a solution vs another and seeing if it makes sense. I did notice the 50mb vortex definitely moves east from where it is now. As if 00z, I would guess the GEFS may be a bit too progressive with the CONUS warmth, but we also have a +NAO which if aligned right could help assist in bring warmth east too. So a few things to watch out for, but overall for SNE..I still like the look.  We may not have the cold shots like we've had, but seems like it could be active.

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I honestly don't know what guidance is right or wrong...just trying to see why one set is showing a solution vs another and seeing if it makes sense. I did notice the 50mb vortex definitely moves east from where it is now. As if 00z, I would guess the GEFS may be a bit too progressive with the CONUS warmth, but we also have a +NAO which if aligned right could help assist in bring warmth east too. So a few things to watch out for, but overall for SNE..I still like the look.  We may not have the cold shots like we've had, but seems like it could be active.

 

Yeah, this is a very tricky forecast time frame end of Jan into early Feb. Not sure what to do with it either, but my initial reaction is to support the over-all conus/canada warm up late jan after our arctic shot for MLK weekend..The East Coast would be last in line for any torching and I could see it linger cool though. 

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Yeah, this is a very tricky forecast time frame end of Jan into early Feb. Not sure what to do with it either, but my initial reaction is to support the over-all conus/canada warm up late jan after our arctic shot for MLK weekend..The East Coast would be last in line for any torching and I could see it linger cool though. 

 

Of course it's  easy for me to just discuss and not be in the hot seat like you are. :lol:  FWIW, the GEFS really warm up the GL region and then sort of redevelop troughing while really trying to spike ridging out west.

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No not necessarily.  I also don't think anyone is using it directly to forecast, but you can't just ignore it. It's all part of the puzzle. You shouldn't completely hug it, but you cannot just ignore it.

Not saying thats saying it has continually shown amplitude only to quickly COD, any forecaster who tried to use it in the equation had trouble, sort of like all the +AO  nonsense spilled in Nov causing torching in the entire USA.

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