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2012 Winter Banter Thread #3


yoda

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so it excels once a year?

Its a strange model but can be pretty good at times...but it needs a certain set of variables that aren't always apparent early on...usually I noticed in systems where hydrostatic approximation is not a good idea is where the NAM succeeds since it is not a hydrostatic model...it simulates the actual convection without hydrostatic assumption. It succeeded in beating the Euro in Jan 12 last year because of this...it also won in Dec 5, 2009 but that system it was less obvious. It wasn't as convective as 1/12/11.

It tends to do terrible in systems with a lot of moving pieces far from the center of circulation IMHO. I don't have any stats to prove this, but just anecdotel when thinking about storms it has succeeded in versus its larger failures.

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So do people think the Nam Fails or the storm Fails. You know, the NAM could be right. I said yesterday I think if it ends a total dud in DC, it could just easily end up a dud everywhere. Anyone think this just sort of ends up as a big ole' nothing, except maybe a thin strip of non-accumulating snow on the NC/SC NC/VA border?

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the JMA has value. It is good at picking up big storms before other models. Obviously, short range...it has some major biases like being too wet and north and strong with systems.

But really what value is that, if there is a big storm and you look back and say the JMA had it first. Do you really need to know 7-10 days out that there is a 2% chance of a big storm. I really do not see how the JMA has any real value.

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So do people think the Nam Fails or the storm Fails. You know, the NAM could be right. I said yesterday I think if it ends a total dud in DC, it could just easily end up a dud everywhere. Anyone think this just sort of ends up as a big ole' nothing, except maybe a thin strip of non-accumulating snow on the NC/SC NC/VA border?

:huh:

Is DC the only place where it can snow?

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But really what value is that, if there is a big storm and you look back and say the JMA had it first. Do you really need to know 7-10 days out that there is a 2% chance of a big storm. I really do not see how the JMA has any real value.

yes...people think your cool if you tell them a storm may be coming 7-10 days out and it happens

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yes...people think your cool if you tell them a storm may be coming 7-10 days out and it happens

Yes but if you follow the JMA, you are like the biggest nerd in school who is ridiculed from 1st grade until 12th grade when you get the prom queen for one night. Life sucks for you for 12 years except that one night.

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