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12/29 - New Years Storm Threat Discussion


Dsnowx53

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No they dont.

Soundings have the city at 28.1 as the precip moves in and 31.9 by the time it ends at hour 54.

And that's going off the NAM dry and less amped solution, which is a bug outlier at this point.

I'm just going off the graphics which show the surface freezing line basically over the city or just to the NW during the heaviest precip.

f54.gif

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Made it to hunter. 10 inches up here. Follow euro. Gfs always s e 3 days out. Nam is useless. I dont knw why pp look at it outside 36 hrs. Euro and euro ensembles. Seriously.

The 09Z old ETA resembles more the Euro than the NAM, still is mainly a miss but barely, its about as close as you can get and be a miss. The Euro's solution from last night is likely overdone, the upper levels don't really match having a low that strong.

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Made it to hunter. 10 inches up here. Follow euro. Gfs always s e 3 days out. Nam is useless. I dont knw why pp look at it outside 36 hrs. Euro and euro ensembles. Seriously.

If the NAM was showing a bomb on the benchmark and the Euro and GFS were both way OTS and flat would you still think it was garbage?

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If the NAM was showing a bomb on the benchmark and the Euro and GFS were both way OTS and flat would you still think it was garbage?

He is correct, the NAM is not very good out that far, and the Euro has the highest accuracy in that range. The model that is most likely to be correct is the Euro. Of course though, there is no guarantee it is correct.
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Nam is pretty much one the flattest and driest solutions but it's clearly making strides toward the euro. It's actually still outside of what I think is its most reliable range of 48 hrs or less. I'm curious as to what the gfs will do, it should at this point trend more amplified if the Euro is correct.

Yes. 96 03 05 2010 all come to mind 3 days out. East coasr. Gfs. Look up maps

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The PNA is favorable for this storm but the NAO isn't. Although, the NAO is heading downward .

Not really. One of the things killing this is a trough crashing into the West Coast. The flow is very progressive and it could easily throw our big storm into disarray. But hopefully a few inches could accumulate anyway.

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He is correct, the NAM is not very good out that far, and the Euro has the highest accuracy in that ra nge. The model that is most likely to be correct is the Euro. Of course though, there is no guarantee it is correct.

You both missed my point. I'm well aware what the name "is". I wasn't trying to say that its solution was correct, just pointing out what it's showing. Now if the actual soundings show colder surface temps that's a different story all together. My statement was based off the 12z NAM graphics on e-wall.

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Can we stop the comparisons to Boxing Day please. Completley different setup.

On Boxing Day you had a huge ridge out west centered over Eastern Wyoming and North Dakota. You had a very deep long wave trough that extended all the way down into the gulf and cyclogenisis well SE of OBX.

With this event, the trough isn't nearly as sharp and doesn't dig nearly enough. Despite a ridge axis located near the same area, it barely extends to the Canadian Border even on the 00z ECMWF. On Boxing Day, the ridge axis extended well up into Northern Canada. That was a very rare setup.

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