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Mid to late February Pattern Discussion...stormy or end of winter?


ORH_wxman

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One trend I have noticed the past few runs is that the Euro esnembles have continued to cool Canada to our north in the long range...pretty large area of --12C to -14C air now to our northwest in Ontario and NW toward James Bay whereas before it will like -8C to -10C air. We have that -8C type air down over our region now. Prob direct respons to the western ridge....its on major 'roids now...like Jose Canseco 'roids and not just ARod 'roids...all the way up into AK ad into the arctic ocean. That actually re-establishes cross-polar flow at some point in early March.

 

Way out there, but that would obviously prolong winter well beyond the ensembles cutoff time.

 

And you know something will come when it breaks too. It looks awesome man.

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What happened to winter ending on Feb 14th? Maybe they meant March 14th

 

 

Well some of us were severely questioning that in the first 3 or 4 pages of this thread...I thought some jumped on that wagon too quick. But its easy to say with hindsight.

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Well some of us were severely questioning that in the first 3 or 4 pages of this thread...I thought some jumped on that wagon too quick. But its easy to say with hindsight.

Good call on not buying into it. Thankfully the GEFS were right all along. And hopefully they will be again for the next 10-15 days. This time though it sounds like there's a lot more consensus.

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Even if you didn't know a thing about the MJO or whatever.....it was clear about 3-4 weeks ago that models were not in sync. Euro ensembles cancelled winter with a wicked +EPO and se ridge ( something it has a bias for) while the GEFS and Canadian ensembles say not so fast. At that point you need to investigate what the heck is causing the differences. It was clear the euro ensembles wanted to blow up Indian ocean convection GEFS weren't as bullish. Euro ensembles are good, but not that good. We also had a cooperative stratosphere and the active srn stream allows for storms to blow up and help manufacture a -NAO...something we are seeing now. I believe HM mentioned this.

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Even if you didn't know a thing about the MJO or whatever.....it was clear about 3-4 weeks ago that models were not in sync. Euro ensembles cancelled winter with a wicked +EPO and se ridge ( something it has a bias for) while the GEFS and Canadian ensembles say not so fast. At that point you need to investigate what the heck is causing the differences. It was clear the euro ensembles wanted to blow up Indian ocean convection GEFS weren't as bullish. Euro ensembles are good, but not that good. We also had a cooperative stratosphere and the active srn stream allows for storms to blow up and help manufacture a -NAO...something we are seeing now. I believe HM mentioned this.

 

 

There was an awful lot of heat transported north into the higher latitudes of the west NAO region in the past 10 days which almost certainly is a significant variable that is not easy to predict. It probably matters more too when we don't have a dominating influence on the pattern like is the case right now. Sometimes one factor dominates so the other variables are just for fodder and are relatively insignificant. I have no idea exactly how much all these things matter, but I'm willing to bet that right now they are all significant without a dominating factor.

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There was an awful lot of heat transported north into the higher latitudes of the west NAO region in the past 10 days which almost certainly is a significant variable that is not easy to predict. It probably matters more too when we don't have a dominating influence on the pattern like is the case right now. Sometimes one factor dominates so the other variables are just for fodder and are relatively insignificant. I have no idea exactly how much all these things matter, but I'm willing to bet that right now they are all significant without a dominating factor.

I have no idea how this +PNA popped lol. I feel like I was too wrapped up in the near term stuff with the blizzard and all....and then when I looked at the long range, I was like WTF where did this come from lol. I love when this stuff happens. It's humbling and is a nice reality check to us when we think we have it figured out. Sometimes I fall into that category.

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Even if you didn't know a thing about the MJO or whatever.....it was clear about 3-4 weeks ago that models were not in sync. Euro ensembles cancelled winter with a wicked +EPO and se ridge ( something it has a bias for) while the GEFS and Canadian ensembles say not so fast. At that point you need to investigate what the heck is causing the differences. It was clear the euro ensembles wanted to blow up Indian ocean convection GEFS weren't as bullish. Euro ensembles are good, but not that good. We also had a cooperative stratosphere and the active srn stream allows for storms to blow up and help manufacture a -NAO...something we are seeing now. I believe HM mentioned this.

 

 

Oh I completely agree with much of this.. .In fact, I think even I made a lengthy post about how warm the end of February was looking back then - this mega +PNA/-NAO couplet has really born its self out in small increments by day, such that now we have a this mammoth +PNA hill in front of us with all this west based on-going blocking.   Wow - right during the beginning of bowling season, mind us.

 

It would be a terrific waste of potential if even middling were only realized. 

 

And no - that's not capitulating to emotions in being able to cerebralize an exciting pattern - nice try!

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Oh I completely agree with much of this.. .In fact, I think even I made a lengthy post about how warm the end of February was looking back then - this mega +PNA/-NAO couplet has really born its self out in small increments by day, such that now we have a this mammoth +PNA hill in front of us with all this west based on-going blocking. Wow - right during the beginning of bowling season, mind us.

It would be a terrific waste of potential if even middling were only realized.

And no - that's not capitulating to emotions in being able to cerebralize an exciting pattern - nice try!

LOL, j/k with that stuff. But yeah, fascinating times ahead. It easily could not be a great snow producer, but any met who looks at that definitely gets ridging in a certain area.

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