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February 2013 mid-long range disco thread


Fozz

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pretty sure in 2010 we dismissed its high totals until they showed up elsewhere etc. even then i think it was probably the highest of all models. it has lots of issues with synoptic winter storms especially outside 24-48 hours.. diminishing returns at distance. nam is a time passer waiting for the others until we're within a day usually and looking for details about the sfc etc. 

Even then the NAM was still overdoing the QPF. It was just a tool to use in the shorter range, not some be all end all

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lol @ you guys dogging the nam...you know dam well if it was showing a blizzard, you'd be hyped lol

How long have you been a member here? We constantly take the NAM beyond 48 hours with a grain of salt, even when it's great for us. Very few people here believe the nam when it gave us like 5" QPF for snowmageddon. THe general rule is to de-amp the NAM and cut QPF by 50%.

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Even then the NAM was still overdoing the QPF. It was just a tool to use in the shorter range, not some be all end all

Tho the NAM was quick to lock in at range that year if I remember correctly. Then again predicting it was going to snow a lot was easier then.
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How long have you been a member here? We constantly take the NAM beyond 48 hours with a grain of salt, even when it's great for us. Very few people here believe the nam when it gave us like 5" QPF for snowmageddon. THe general rule is to de-amp the NAM and cut QPF by 50%.

 

yea but we're not really talking about qpf here.  we're talking about track.  you can rationalize it however you want, but if it meant nothing there wouldn't be 35 members paying attention to it on a sunday afternoon.  i never said it was right, just saying that it doesn't need to be put down.

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yea but we're not really talking about qpf here.  we're talking about track.  you can rationalize it however you want, but if it meant nothing there wouldn't be 35 members paying attention to it on a sunday afternoon.  i never said it was right, just saying that it doesn't need to be put down.

Nobody is rationalizing anything. I'm just stating facts. 35 members aren't paying attention because of an amped up run of the NAM. The threat is there on all the models.

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Nobody is rationalizing anything. I'm just stating facts. 35 members aren't paying attention because of an amped up run of the NAM. The threat is there on all the models.

i dont pay attention to nam at all untill its at least inside of 60 hrs.. and i really dont  get excited with it till inside of 48 hrs, nam at 78-84 hrs is  very inaccurate IMO

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Nobody is rationalizing anything. I'm just stating facts. 35 members aren't paying attention because of an amped up run of the NAM. The threat is there on all the models.

 

all i'm saying is that no one here probably knows enough to put down a computer model imo.  how many people on here have contributed to improving them?  i'm just grateful we have these things because let's face it, no one would be able to forecast their way out of a wet paper bag if they didn't exist.

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all i'm saying is that no one here probably knows enough to put down a computer model imo.  how many people on here have contributed to improving them?  i'm just grateful we have these things because let's face it, no one would be able to forecast their way out of a wet paper bag if they didn't exist.

models are a tool but it still takes real mets with degrees to dicypher the data and make real forecasts.

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tell me someone who could forecast a few days in advance without a computer model and i'll show you how to grow money on trees.

 models are only a tool, but real mets need to figure out the diagnostics  with the model to see their biases, and to see which models are out liers . so it does take more than a computer  model to forecast

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all i'm saying is that no one here probably knows enough to put down a computer model imo.how many people on here have contributed to improving them?  i'm just grateful we have these things because let's face it, no one would be able to forecast their way out of a wet paper bag if they didn't exist.

But we do though...at least in cycles. The NAM has constantly been too amped/too juiced and sometimes too cold. We DO know model biases and can apply them.

We're all grateful for the models. And within 3 days, I'd have to disagree that forecasters wouldn't be able to forecast their way out of a paper bag. Without a doubt, they have been extremely useful tools that have enhanced accuracy greatly...but believe it or not, forecasters used to do their jobs before these models existed.

Of course we're all going to be interested if the 84 hour NAM shows a blizzard....but if the other models are far less enthused and they don't latch on to the idea, then I think we can safely say the NAM is the outlier and it's less likely to be right.

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My bad. You're right though, maybe we can make a thread for the model debate/discussion.

 

Not really directed at you - more at the people who are literally hyper-analyzing the models as tools every single cycle. You've only chimed in which I think is fine. Plus, I'm not the rule maker here ;) 

It just seems like the same people want to bring up the exact same points at 00z, 06z, 12z, 18z - we come to the same conclusions about the models and then the same people are back like they completely forgot the previous discussion. 

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nevermind, your missing my point. they are one of many tools mets use. the modeling  shows them  different possibilitys,  its up to the met to use their knowlegde to  examine the data, and use the best solution. so models are a tool

 

no, i got your point.  obviously i know you need skills to interpret large amounts of data, but without that data there'd be nothing to interpret.  all i'm saying is that i would gladly take the nam over nothing at all.  that's all i'm saying.  i know past 48 hrs it's not as accurate as the others.

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no, i got your point.  obviously i know you need skills to interpret large amounts of data, but without that data there'd be nothing to interpret.  all i'm saying is that i would gladly take the nam over nothing at all.  that's all i'm saying.  i know past 48 hrs it's not as accurate as the others.

oh ok.. its all good man

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I didn't say it wasn't civil. But we literally have the same discussion multiple times per day it seems. 

 

one thing that never bothered me is the chitter chatter during a model thread.  i never understood why others get upset about that, but that's another debate.  personal attacks are the only thing i don't tolerate.  anything else i can sift through, but that's just me.  anyway, it's model run time so i'm gonna focus on that now.

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