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Fail and Fooked


Ji

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Updated forecast:

The precipitation shield did fill in a little bit from DC and points south on the models, but not to the degree I thought they were going to. I made some adjustments to the forecasts because of that, bringing the 1-2" line and the 2-4" contour over the Apps. further south. I brought the 1-2" contour up north in southeastern NC due to the warmer temperatures.

20110209-10_MAsnowFinal.png

It will be hard to tell how much the DC area gets due to snow sublimation in the lower levels early on, but I could see DC/MoCo getting a dusting to 1/4", with a small chance of going higher. Areas north of MoCo up towards Frederick and Baltimore could see a dusting at best.

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Justin Berk's Post:

About that snow storm.... There already is a surprise.

The most aggressive model- the NAM- is shown here compared to the actual surface map. Last night's forecast for this morning did not have the snow in Arkansas yet according to a tweet from The Weather Channel- there is 18"-20" snow on the ground now!!! Our morning anchor Charles ...Crowson who is from AR, had reports of at least 8"-10". Hmmmmm...

The northern push has been in my forecast all week, but our air is so dry that even a 100 shift north would have to battle the arctic air for snow to actually reach the ground. But, I had mentioned watching this storm's forward speed. If it can scoot farther east before the arctic air mass can shove it farther south, then all bets are off. That means that the starting point is farther north, it is move developed, and the result could be a surprise.

I am not saying anything certain yet... there still is not much support for more than flurries or light snow near and south of Baltimore. However, stand by... This still is worth very close attention and I will share my thoughts this afternoon after I can see how it is developing.

If anything were to happen, it would be between midnight and daybreak tomorrow.

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The fact is, there are only 50 users reading this topic. If a snowstorm was actually coming, we'd have 250 or more.

So if the unthinkable happens and we get 2 inches or more out of this, it won't just be regular people shocked and stuck on the road, it'll be some AmericanWX users as well...

P.S. OT, but can someone explain to me why I am 5 PPD? I don't have too much a weenie or trolling history by any means...

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The fact is, there are only 50 users reading this topic. If a snowstorm was actually coming, we'd have 250 or more.

So if the unthinkable happens and we get 2 inches or more out of this, it won't just be regular people shocked and stuck on the road, it'll be some AmericanWX users as well...

P.S. OT, but can someone explain to me why I am 5 PPD? I don't have too much a weenie or trolling history by any means...

Thanks for the clarification on the users .... hint... hint...

and not that it matters all that much but I went from my forecast being cloudy when i woke up this morning to a chance of flurries mid morning to now a 30% of snow tonight as of 12:00pm

http://forecast.weather.gov/MapClick.php?CityName=Annapolis&state=MD&site=LWX&textField1=39.0221&textField2=-76.4501

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I think I may already know the answer but do the models take into account the lost precip while moistening up the column? If not then .03 may not even reach the ground. I remember a met saying that the models do account for that.

I wouldn't mind at least seeing flakes fall before the warm up. It's looking like the odds are in favor of at least DC metro seeing some snow fall.

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The fact is, there are only 50 users reading this topic. If a snowstorm was actually coming, we'd have 250 or more.

So if the unthinkable happens and we get 2 inches or more out of this, it won't just be regular people shocked and stuck on the road, it'll be some AmericanWX users as well...

P.S. OT, but can someone explain to me why I am 5 PPD? I don't have too much a weenie or trolling history by any means...

Please message a mod or admin for this question to be answered. A general member isn't going to have a solid answer for you.

It could have been for a "clutter" post during storm mode. Even one post in those situations can get you limited.

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I think I may already know the answer but do the models take into account the lost precip while moistening up the column? If not then .03 may not even reach the ground. I remember a met saying that the models do account for that.

I wouldn't mind at least seeing flakes fall before the warm up. It's looking like the odds are in favor of at least DC metro seeing some snow fall.

they show what should hit the ground

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For dc a nice safe call would be a dusting to a half inch with mabe a 10% chance of an inch. I'm not sure what the ratios would be. Cold is good but flake size and type is also important and I'm not sure the temps where the snow is forming favor dendrites. Most of the uvv on the NAM is pretty high up and therefore is out of the dendrite range more into plates and columns, the former tend to be a little denser than dendrites and the latter tend to be small flakes. The uvv also is pretty weak which is another minus for flake size. I guess I'm saying I doubt the ratios will be 20-1 but am not sure I've seen the combo of uvv and temps that the vertical profiles are showing so I could be flat out wrong.

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