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18z Model Thread


Blizzardo

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Not always but generally at least one of its runs inside 48 hours shows a qpf bomb

When the NAM shows a QPF bomb it's pretty obvious, this doesn't look like that to me. This actually looks a bit conservative still given the dynamics in play. But who knows, coastal storms were easier to forecast 15 years ago  :oldman:

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LOL spoke too soon. Figured they'd wait for sure since its still over 48 hours out for the heaviest snows

 

It may be that they are taking the holiday into account and realizing that people may not keep tabs of the weather until after NewYears Day, and a head's up with some semblance of forecast totals would be useful in advance. Also, local media outlets can use it as a guide so there's more uniformity to forecast totals rather than meteorologist's going out on their own limb. Also the prolonged nature of the event has to be taken into account, regardless of the snow rates.

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When the NAM shows a QPF bomb it's pretty obvious, this doesn't look like that to me. This actually looks a bit conservative still given the dynamics in play. But who knows, coastal storms were easier to forecast 15 years ago  :oldman:

There's nothing that stands out that looks off, its similar to the gfs and euro just a tad wetter over western areas

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lol 18z always seems to be the run that comes up with the first big solution before a big storm lets see if the tradition continues.

you got that right. still this storm would not be complete without a NAM QPF bomb, if it does not I will be sorely disappointed in the model :lmao:

 

seeing a red-tagger anticipate a 18z GFS is pretty funny considering that I think it is the red-headed step child of the GFS family

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you got that right. still this storm would not be complete without a NAM QPF bomb, if it does not I will be sorely disappointed in the model :lmao:

 

seeing a red-tagger anticipate a 18z GFS is pretty funny considering that I think it is the red-headed step child of the GFS family

 

The NAM has been much calmer since Christmas. I think it's understanding the synoptics of this winter's weather more. 

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It's kind of obvious. It has been showing huge and explosive storms (BECS) and most of the time it was wrong. This time it's modest and steady. 

Each model handles different weather patterns better/worse than others. For example: the Euro which has lost some of its stellar consistency since the summer.

- That's why you have to use each one as a tool in your tool box and know what their strengths and weakness are.

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It's kind of obvious. It has been showing huge and explosive storms (BECS) and most of the time it was wrong. This time it's modest and steady. 

 

Lol. Just because it's not showing a bomb now doesn't mean it won't in the future. The physics the NAM runs on have always been the same. Nothing changed. A model can't all of a sudden understand synoptics better.

 

Not trying to be rude, but the NAM is no different than before.

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It's kind of obvious. It has been showing huge and explosive storms (BECS) and most of the time it was wrong. This time it's modest and steady. 

very encouraged with the trend since 12z today. I mean im not expecting the blizzard scenario anymore but this storm has that feel that dare I say has that BDB 2010 look where the models missed something up until the last minute. just something to consider and I know that setup is worlds different than this. it is something to consider throughout tonight and tomorrow if indeed it is

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