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December 29-30 storm.


stormtracker

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The solid takeaway from today's runs are an ok 5h setup and pure snow solutions. Flow is kinda flat for a big storm but that's totally fine with me. I have a strong hunch this thing trends wetter. Even if it slides it can easily throw a good shield of overunning into the coldest airmass of the season.

I'm not working at all this week. Gonna model watch until my pupils have a 16:9 aspect ratio.

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The solid takeaway from today's runs are an ok 5h setup and pure snow solutions. Flow is kinda flat for a big storm but that's totally fine with me. I have a strong hunch this thing trends wetter. Even if it slides it can easily throw a good shield of overunning into the coldest airmass of the season.

I'm not working at all this week. Gonna model watch until my pupils have a 16:9 aspect ratio.

I like your thinking, Bob. I'm at home all week, so I'll have a lot of time on my hands. Whether that's a good thing or not, I'm not quite sure...

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Randy, now I'm catering to your weenie side. The 120 hr European ens mean 500h today had many of the same similarities as the GEFS that I posted in the medium range thread and it has some similarities to the anomaly pattern found with DCs 8 inch or greater composite. That's not to say it will produce an 8 inch storm or even a snow storm as there are too many days out there to know for sure and the block on the euro is not as storm as on the typical composite. Below I've attached the euro 120 hr and the dca 8 inch or greater 500h anomaly composite for about a day before the storm. Compare the location of the negative height anomaly near western TN on the euro forecast and note and how closely it mimics location on the 8 inch or greater composite. Both also have a negative height anomaly south of the positive anomaly that stretches across the Baffin Bay region. The maritimes low is quite a bit weaker than the composite but is in a good place though its size worries me some that it could become displaced farther east than we'd like but on this forecast, it's right where we want it.

post-70-0-60785700-1356400570_thumb.gif

post-70-0-23057400-1356400612_thumb.gif

On the forecast you can also infer a possible double jet structure by looking at where the closest spacing of the height lines occurs in relation to the approaching trough and another to the southwest of the trough over the maritimes. That jet streak configuration is really a good one if you want a storm to develop.

The importance of the Boxing day storm in the evolution and track of this one can be shown some on the 120hr euro ens mean surface forecast. I've annotated a rough frontal location on it with a dark black curving line. Note that the 850 temp lines are packed down across the southeast as cold air was forced southward by the boxer day storm. a Frontal trough is already located along the southeast coast. That feature will start lifting north in response to the approaching 500h trof. As it lifts northward the low will track along that front.

post-70-0-36036500-1356401020_thumb.png

It's been a long time since I've liked a set up this much. That doesn't mean we get a storm but that there is more potential than we've seen for a couple of years.

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Damn Wes, this is an all ages board. Maybe rated R post but its borderline porn.

I've been goofing off to much to really sit down and take a look. The one thing that stood out from my quick glance is that there is a lot less to go wrong this time. We can always get hosed but the odds are clearly better in our favor. I'm luvin being free from work all week.

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Agreed. Really nice write up. Now we sit and hope it holds or gets better ;)

Those maps certainly look nice.

lets hope as the storm still could shear and go south too far for us, could have the block weaken and something go to the TN Valley like the Boxing day stomr (I think right now that is not as likely but still is possible) or could be right there for us. That both model ens mean's look pretty good is certainly a plus.

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This storm has been looking good for an accumulating snow event on the models for quite some time now. I love the 500H 8"+ anomoly map. Great post as always Wes, made even better because you rarely start buzzing about a pattern or storm. You are the most reserved about jumping on storms, but when you do your track record is damn good. I just hope we get a couple inches from this storm. It's been a while since the grass has been completely covered by snow.

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I don't really like the all or nothing thinking amongst this forum. Even in a good to great setup most storms will be imperfect or fail completely. I'm rooting for a snow event of any kind. There is a reason most of our snow events are small to medium events.

6-12 or bust.

And I'd guess the latter is more likely.

But hey. I liked the post-Chill period like a week ago so ill ride it for now.

Is party cloudy better than cold rain?

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