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2011 Winter Banter Thread


yoda

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Should I be interested in the latest euro @ 168+?

I use raleigh's site so it's kinda tough sometimes to indentify the finer details. Does 500mb energy close off and track across the va/nc border and pop a coastal? 24 hour panels are hard to figure out what's in between.

850 temps and winds look good too.

I didn't see too much talk about this so i guess my weenie eyes are failing me.

Ian and I both just mentioned it in the new December thread - also wunderground has Euro maps out to hr 180 where you can zoom in and get a better view of what it is showing for us.

In this case, it was rain as it passed the area, cold comes in once the moisture is already out of the area.

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Ian and I both just mentioned it in the new December thread - also wunderground has Euro maps out to hr 180 where you can zoom in and get a better view of what it is showing for us.

In this case, it was rain as it passed the area, cold comes in once the moisture is already out of the area.

Thank you for saving me some time. Didn't check the Dec thread. It is something to track though. Anytime 500 energy tracks in that general area it is something to keep an eye on. Cold rain isn't all that bad is it?

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Thank you for saving me some time. Didn't check the Dec thread. It is something to track though. Anytime 500 energy tracks in that general area it is something to keep an eye on. Cold rain isn't all that bad is it?

Temps were in the 40s, so it wasn't a horrible cold rain. Better than 35 and rain.

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I just googled "December 5th coincidence," per Ian's suggestion in the trainwreck thread. The pictures of the 5 Dec 09 storm made me more than a bit nostalgic.

I'm kind of dreading the two-year anniversary of 19-20 Dec.

Awww come on, 12/19 is awesome :)

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New December forecast:

winter2011-12_FINAL_dec2011.png

Compared to the old one:

winter2011-12_updatedForecast_dec2011.png

That's what happens when you don't get blocking and allow the Pacific to have more of an influence.

More (somewhat basic) discussion on the blog, but it's not anything most of you haven't heard already: http://madusweather.com/2011/11/december-2011-temperature-forecast-final/

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I just googled "December 5th coincidence," per Ian's suggestion in the trainwreck thread. The pictures of the 5 Dec 09 storm made me more than a bit nostalgic.

I'm kind of dreading the two-year anniversary of 19-20 Dec.

Nahhh, don't dread the anniversary of 19-20 Dec 2009! Good memories, one to add to all the other storms in one's experience.:) It almost seems that a fair number of people tend to "overlook" that storm when talking about winter 2009-10, focusing more on the February ones (or the period late January through mid February). Those certainly had more sheer impact in many ways in the DC area, but the December event was quite substantial and the first "big one" in many years here (I got 20.0" where I'm at).

Yes, 5 Dec 2009 makes one nostalgic, it was a prelude of what that winter would bring. Sort of like 5 Dec 2002, I remember that one pretty well, leading into what was also a great winter!

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Dec 19th storm is one of my all time faves. One of my best friends was getting married on the 19th and I saved his day by driving him to the hotel during the height of the storm (he couldn't get out of his parking lot). Took me 4 hours to go from Rockville to Columbia. Absolute chaos on the road. Cars stranded everywhere on 495 and 95. Total driving free for all. My sububan kicked the storm's azz. One of my favorite drives ever. I ended being the hero of the day at the reception and felt like a million bucks. I would love a redux but I don't think a 2' storm is in our cards this year.

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Dec 19th storm is one of my all time faves. One of my best friends was getting married on the 19th and I saved his day by driving him to the hotel during the height of the storm (he couldn't get out of his parking lot). Took me 4 hours to go from Rockville to Columbia. Absolute chaos on the road. Cars stranded everywhere on 495 and 95. Total driving free for all. My sububan kicked the storm's azz. One of my favorite drives ever. I ended being the hero of the day at the reception and felt like a million bucks. I would love a redux but I don't think a 2' storm is in our cards this year.

I got married on the 19th too!

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New December forecast:

winter2011-12_FINAL_dec2011.png

Compared to the old one:

winter2011-12_updatedForecast_dec2011.png

That's what happens when you don't get blocking and allow the Pacific to have more of an influence.

More (somewhat basic) discussion on the blog, but it's not anything most of you haven't heard already: http://madusweather.com/2011/11/december-2011-temperature-forecast-final/

post-4-0-30792900-1322697752.jpg

post-4-0-21972900-1322697786.gif

post-4-0-83264900-1322697768.jpg

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Lol. Not sure about your new map either. At least the gradient in the east which I think should be reversed if anything. I'd take the under in new england.

The upcoming pattern for December would probably favor the colder anomalies the further north you go over the lakes and NE...but it can be tricky with that cutoff moving east in week 1...that could definitely skew the typical temperature response in this long wave pattern. New England could start off very warm in week 1.

After week 1, I think you'll probably start to see a more typical gradient pattern in La Nina...but how long that lasts is up in the air. The northern plains should get very cold at least for a time.

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Yes...I am kind of assuming a +NAO/-EPO/-PNA pattern in the means but that is a guess. Months can be hard if you have something dominate the pattern for 10+ days and skew everything.

That recipe can become a fairly common La Nina look for sure with a classic gradient in the Northeast / Lakes.

If at any time mid-December the PV decides to retreat, it will be hard to find cool anomalies anywhere in the CONUS. However, I don't think that this occurs like in 1999 and if it does, it wouldn't be a long stretch.

What an annoying forecast for December!

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Lol. Not sure about your new map either. At least the gradient in the east which I think should be reversed if anything. I'd take the under in new england.

The month-long anomalies are a bit of a stretch for sure (especially compared to a lot of other forecasts with the reversed - more typical - warm pattern in the eastern U.S.), but what I was trying to do was actually capture a blend of two different patterns. I believe the models are too cold along the East Coast during the first third of the month as the pattern gets a boost from the warm phases of the MJO to go along with the -PNA/+AO/+NAO pattern. While that's going on, some of the cooler air continues to seep into the Southeast from the central U.S. After all that, the Southeast ridge tries to hold for a bit before some of the medium-range signals begin to relax. From there it's just a matter of seeing which signal wants to try to dominate during the second half of the month. PNA looks to relax near mid-month, but you've still got a +AO/+NAO signal lingering which should battle the typical Nina climo in the Northeast.

As has been said before, it's all about the timing.

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As has been said before, it's all about the timing.

You're right about that. Not that I really know all that much but I was surprised at how November went. And also about what the first 2 weeks of Dec look like. I envisioned something completely different. I was totally sold on the NAO switching negative in early December and staying that way for the balance of the month. I guess there's hope for that in the latter half but I'm second guessing that already. I'm starting to envision this long lived current pattern breaking down really slowly or potentially being the dominent pattern throughout the winter.

I'm starting to wonder if we end up with an overall positive NAO / AO for the DJF timeframe too. We've had a heck of a run the last couple of years. It almost seems like the switch got flipped in late August and we are in a new regime now.

The only reason I'm starting to feel this way is because I've chased so many pattern flips over the last 5-6 years that just never materialize. And when they do they are overall short lived before returning to the previous dominent pattern. I'm not saying the winter will be a bust either. A neutral or positive NAO will keep a progressive pattern that will bring it's chances. We could easily pull off a couple of really nice events even when the major indices aren't favorable.

Met input on these thoughts would be great because what the heck do I know? My post is just a wag.

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New December forecast:

winter2011-12_FINAL_dec2011.png

Compared to the old one:

winter2011-12_updatedForecast_dec2011.png

That's what happens when you don't get blocking and allow the Pacific to have more of an influence.

More (somewhat basic) discussion on the blog, but it's not anything most of you haven't heard already: http://madusweather....forecast-final/

On the bright side, central Montana was consistent. :weight_lift:

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December should end up looking alot like 1967 I think, the Similarities between the September-October periods in 1967 and 2011 globally are pretty neat, I'll post a composite below on this post once I can get home to my PC.

Edit: Ok here it is, the baseline periods make the temperature profiles between the two look off, but in reality they're very close.

September/October 1967

71.178.183.8.334.9.53.19.png

September/October 2011

71.178.183.8.334.9.54.45.png

Not perfect, but December 1967 looked like this: (below) PV was clearly weaker in 1967 it looks but was strong in November (1967), but the -PNA, North Atlantic Ridge, and +AO are all present.

71.178.183.8.334.9.57.7.png

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