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Jan 23/24 Major Coastal Storm Discussion


Zelocita Weather

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You must be kidding me. Hugging the NAM to begin with is unwise ... and hugging it 48 hours in advance is even riskier. Especially when you have the GFS and Euro converging on a different solution. The NAM is just not all that reliable. Will it be right in this case? You never know. But it's unlikely.

 

I ask again, what's your basis for saying this?  Feel free to point to verification scores or whatnot.   There's a lot of assertions without evidence in your post.

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The NAM is like the cutest guy/girl in high school asking you to the dance. The entire lead up to the event it makes you feel warm and fuzzy. It surpasses even your wildest dreams. Then suddenly....

Just don't freak out later when you're covered in pig's blood.

This is really odd

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Keep the banter in banter, folks.

It's not banter to point out that the odd hug-toss view of the models is bad forecasting.  The NAM is a piece of evidence.  So are all the other models.  As everyone is pointing out, high-res models are coming north and the globals aren't.  That's odd.  If there's an explanation for this based on how models are actually coded, I'm all ears.  Would love to understand it.  I hate blackboxing models.

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I ask again, what's your basis for saying this?  Feel free to point to verification scores or whatnot.   There's a lot of assertions without evidence in your post.

I can't give you objective facts on this because I don't have any compiled. Any reputable met will tell you that based on past experience, what I've said is true. I've seen it over and over again on this forum over the years with past storms. The NAM always overdoes QPF and is just not as reliable ... not even close ... as some of the other models. Especially when you have divergence from a solution that the other models are converging on.

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I can't give you objective facts on this because I don't have any compiled. Any reputable met will tell you that based on past experience, what I've said is true. I've seen it over and over again on this forum over the years with past storms. The NAM always overdoes QPF and is just not as reliable ... not even close ... as some of the other models. Especially when you have divergence from a solution that the other models are converging on.

 

This is 30 words to say, "I don't know."  OK.  If anyone understands why the RGEM and NAM are deviating from the Euro and GFS, holler.

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This is 30 words to say, "I don't know."  OK.  If anyone understands why the RGEM and NAM are deviating from the Euro and GFS, holler.

 

there is vast empirical data that shows the NAM trailing all other major models.  you just want someone else to do the heavy lifting in an argument you started.  trust me, the evidence, scientific and all, is out there.  it trails the euro, gfs, ggem/rgem and I do believe even the UKMET in overall verification from more than 48 hours out.

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This is 30 words to say, "I don't know."  OK.  If anyone understands why the RGEM and NAM are deviating from the Euro and GFS, holler.

 

Scientific reasoning wouldn't be a better explanation then simply stating that they are historically inferior models to the Euro and GFS. Especially the NAM, at this range.

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If the globals come on board with a NAM'ey solution, we'll be in business, and the NAM will be the hero.

 

They essentially are. The NAM is less than 50 miles north of the Globals. That's nothing. You can't expect medium-range models to have pinpoint accuracy. That's not what they were designed for. NAM is typically better in these situations (higher res).

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They essentially are. The NAM is less than 50 miles north of the Globals. That's nothing. You can't expect medium-range models to have pinpoint accuracy. That's not what they were designed for. NAM is typically better in these situations (higher res).

 

Good point. If the 50 mile jog wasn't such a crucial component to this, the feeling would be that the models are relatively in agreement. The problem is 50 miles will make or break someones storm here.

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This is 30 words to say, "I don't know."  OK.  If anyone understands why the RGEM and NAM are deviating from the Euro and GFS, holler.

Those are YOUR words, not mine. There are times when one draws a conclusion from inductive reasoning based on anecdotal evidence. Suit yourself.

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