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Do We have one More in Us?


Damage In Tolland

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It's not really clear why the models are "stretching" the flow so much -- like they are trying to force progression into the flow. 

 

Be that as it may, the +NAO really offers a ton of argument for this to wind up left of the 12z operational blends.  

 

Also, for those riding the Euro, it's wheel house time frame for our longitude is < D5 .. not actually ON D5.  Would not be surprising to see tomorrow's position be different than these 00z and 12z OTS looks. 

 

Many examples of late west correction pummels in the annals folks. Shallow memories polluting threads ...  Fool's Day 1997, Boxing Day 2010, January 2005... All these majors really didn't get nailed until < 48 hours out.  I think the best folks should do is take the ensemble means, and take note of the direction of the uncertainty/spread.  If it shades west, the storm will end up there more than half the time.  

 

You get sick of advising this stuff... Easier just to just ignore the opines and whines of the One Flew Over The Cookoo's Nest ward of people that cannot seem to penetrate this logic into their minds.  Oh, they seem to acknowledge it, ...only until the next run/cycle, when we find ourselves rinsing and repeating through this same tired mantra about not panicking, and why, all over and over and over and over again.

 

I think truth be told, folks just want a big storm on the charts at all times, and when not, they are like spoiled 5-year olds that can't have their candy.  Whah whah whah.  Emotion is the absence of objective rationalism, and that is why this repetition has to go on; it's because people tap the weather rod into their emotional brain, and so that is what bleeds out of them most of the time.    

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These threads are unreadable. We now also have a long wave pattern that favors the Mid Atlantic and NNE but screws SNE as well. Just a marvel of science right there.

 

What I'm seeing is the s/w I mentioned up near arctic circle. The 12z ECMWF yesterday was taking most of the shortwave energy and bring it east to help amplify the eastern US trough. The 00z ECMWF started splitting the energy more towards the Aleutian low, and the 12z ECMWF has continued this pattern. I know its oversimplifying the overall pattern, but that shortwave is the key and if most of the energy gets diverted westward into the Aleutian low, its game over for a more amplified closer to the coast solution. 

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If this progressive ... fast appeal to the runs/blend verifies, the dailies are going to change with extreme rapidity over the next week.

 

For four solid days worth of runs the Euro has been hammering a pattern roll out (how permanent, remains to be seen), with an already positive NAO going even more positive, at the same time the PNA flat lines.  Not much left for winter in that sort of regime when the Equinox is behind you.  7 days from now, 55-60+ could whiplash our region. Take note of the GL western OV wfropa.  It's been vastly more consistent than any preceding storm, actually.

 

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It's not really clear why the models are "stretching" the flow so much -- like they are trying to force progression into the flow. 

 

Be that as it may, the +NAO really offers a ton of argument for this to wind up left of the 12z operational blends.  

 

The flow is "stretching" because the longwave pattern in the Pacific is becoming more zonal in the medium range as the Aleutian low kicks out shortwaves into the western US. 

 

The NAO doesn't really offer much guidance on how far east or west a particular surface cyclone will go. Keep in mind the NAO index into the future is model derived and will often be a byproduct of the flow rearrangement a baroclinic system causes. So the rapid phase change of the NAO is primarily due to the baroclinic cyclone, not the other way around. 

 

In my opinion its much more useful to focus on the flow upstream rather than the flow downstream. Yes blocking has an impact, but it often gets overused to explain the development of such cyclones when its often the byproduct of such cyclones. 

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What I'm seeing is the s/w I mentioned up near arctic circle. The 12z ECMWF yesterday was taking most of the shortwave energy and bring it east to help amplify the eastern US trough. The 00z ECMWF started splitting the energy more towards the Aleutian low, and the 12z ECMWF has continued this pattern. I know its oversimplifying the overall pattern, but that shortwave is the key and if most of the energy gets diverted westward into the Aleutian low, its game over for a more amplified closer to the coast solution.

Yeah those are good obs. My post was about former comments about a pattern that made no sense, yet was stated. I agree with what you put forth.

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There is no trend when models waver. Why would anyone live and die by each run over 5 days out? Signs of a not so good meteorologist.

 

Thank you.  One of my pet peeves is people calling the movement from one model run to another a trend.  One run to the next is a different solution.  Trends require more than two runs showing changes in the same direction.  But I digress.

 

What a beast of a storm. I'm gonna be watching this closely. Could have an impact here.

 

You and Nantucket Waves may be the only ones who need to.

 

33.1/22

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When it comes to model *trends* a general rule of thumb I heard was: one is an abberation, two is a coincendence and three is a trend.

 

As for the potential system for next week.  I have admittedly been half paying attention from the bleachers. (It's time for spring).  And from my perspective in the cheap seats there is fairly good agreement between the ensembles for a track that is offshore.  

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When it comes to model *trends* a general rule of thumb I heard was: one is an abberation, two is a coincendence and three is a trend.

 

As for the potential system for next week.  I have admittedly been half paying attention from the bleachers. (It's time for spring).  And from my perspective in the cheap seats there is fairly good agreement between the ensembles for a track that is offshore.  

 

You get cheap seats.  I'm finding the parking lot full.

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It's not really clear why the models are "stretching" the flow so much -- like they are trying to force progression into the flow. 

 

Be that as it may, the +NAO really offers a ton of argument for this to wind up left of the 12z operational blends.  

 

Also, for those riding the Euro, it's wheel house time frame for our longitude is < D5 .. not actually ON D5.  Would not be surprising to see tomorrow's position be different than these 00z and 12z OTS looks. 

 

Many examples of late west correction pummels in the annals folks. Shallow memories polluting threads ...  Fool's Day 1997, Boxing Day 2010, January 2005... All these majors really didn't get nailed until < 48 hours out.  I think the best folks should do is take the ensemble means, and take note of the direction of the uncertainty/spread.  If it shades west, the storm will end up there more than half the time.  

 

You get sick of advising this stuff... Easier just to just ignore the opines and whines of the One Flew Over The Cookoo's Nest ward of people that cannot seem to penetrate this logic into their minds.  Oh, they seem to acknowledge it, ...only until the next run/cycle, when we find ourselves rinsing and repeating through this same tired mantra about not panicking, and why, all over and over and over and over again.

 

I think truth be told, folks just want a big storm on the charts at all times, and when not, they are like spoiled 5-year olds that can't have their candy.  Whah whah whah.  Emotion is the absence of objective rationalism, and that is why this repetition has to go on; it's because people tap the weather rod into their emotional brain, and so that is what bleeds out of them most of the time.    

Well said. 

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The flow is "stretching" because the longwave pattern in the Pacific is becoming more zonal in the medium range as the Aleutian low kicks out shortwaves into the western US. 

 

The NAO doesn't really offer much guidance on how far east or west a particular surface cyclone will go. Keep in mind the NAO index into the future is model derived and will often be a byproduct of the flow rearrangement a baroclinic system causes. So the rapid phase change of the NAO is primarily due to the baroclinic cyclone, not the other way around. 

 

In my opinion its much more useful to focus on the flow upstream rather than the flow downstream. Yes blocking has an impact, but it often gets overused to explain the development of such cyclones when its often the byproduct of such cyclones. 

 

 

It's among the more stochastic teleconnectors there are, with often intra-weekly time scale mode changes, but that is strictly the reason it's guidance value is a minimum.  

 

The value I am talking about is the straight up correlation between -NAO and suppressed storm tracks, vs +NAO and polarward migrating systems through the GL. There's not much room there for debate.

 

If we want to argue that the persistent +NAO, and that forecast by any tool currently commissioned is false, than so be it.  I don't have an opinion on what the NAO is actually going to be like.  *BUT* if it is positive, that further SE tracks are in fact less correlated.  

 

'Coure, no correlation is 1::1 in this business.

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