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Winter 2013-14 Pattern Discussion II


buckeyefan1

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sounds good to me. but it's a long ways to go!!!  it'll change many times before Friday. and would like to see the Euro show up much colder...

Me 2 buddy. Long ways to go but if this were to verify somewhere someone on this board is going to be in shock as to what can happen with the type of set-up this is showing. I love winter and all the weather types that comes with it but sometimes even a good thing can be too much.

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 Tonight's Euro still nowhere near as impressive with the cold air tap...but still has a ton of moisture coming through. Infact, the model run has some really impressive precip totals over the next week...parts of Alabama could see 5 1/2 inches QPF and widespread 2-4 inch QPF from New Orleans to DC...over a span of 3 separate systems.

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Thanks for stopping by, Robert. I hope you have many more reasons to stop by over the rest of the winter.

The 0z GFS would be a devastating ice storm for many. If it is close to reality, it would trend colder, possibly enough to allow more sleet to fall, which would be good. The Miller B transfer would probably take place farther east too.

Not really impressed with the Euro or the CMC. Still more questions than answers.

The rest of the 0z run looked awful for winter weather prospects. The 6z looked a little bit better. The indexes still look terrible though. I wish we could get a snowier pattern to set up before Feb is out, but there are no signs of it yet...although the 6z did have a fantasy snow for NC.

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Well, just viewed the rest of the run. Wow. This went like I told my colleague earlier today, a total 3 part storm...basically combine 2005 with March 2009 and wham.  For NC anyway . I'd say that big high damming down has followed the synoptic rule book to a tee. Watch for wholesale changes on Euro soon.  That key is just how super charged the Arctic wave is coming across the Pole. This could evolve into a major Southeast Winter storm, long lived. Rings a bell for me to something along the lines of 2009, with days of rain ahead of a major snowstorm.  I can do without any ice, and that 1040 high staying in place and driving northeast winds down here is dangerous looking all the way to near Atlanta. The models never capture true damming right, and this one is a reinforcing, growing CAD shown on GFS atleast. That western system closes off into bowling ball cutoff....cutting through mid South. The Euro was further south, but not as closed. This could easily trend into an incredible Winter storm for many folks, front end, back end and some will be non stop Winter precip. Nightmare to forecasters. But the 5H trends have shown this a while now. I"d bet this evolves into a monster of some type.

 

 

Thanks for your input...I miss seeing your discussions around here. I know you have your own business and I hope it's doing good. I like to "lean" on your advice and experience....

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Thanks for stopping by, Robert. I hope you have many more reasons to stop by over the rest of the winter.

The 0z GFS would be a devastating ice storm for many. If it is close to reality, it would trend colder, possibly enough to allow more sleet to fall, which would be good. The Miller B transfer would probably take place farther east too.

Not really impressed with the Euro or the CMC. Still more questions than answers.

The rest of the 0z run looked awful for winter weather prospects. The 6z looked a little bit better. The indexes still look terrible though. I wish we could get a snowier pattern to set up before Feb is out, but there are no signs of it yet...although the 6z did have a fantasy snow for NC.

 

Cold Rain, have the indices looked favorable much at all this winter??  We've had a very cold January....not sure what the indexes showed but I don't they were particularly great.   I never really look much beyond 5 days for the indexes anyway positive OR negative. I guess they can show trends but the actually day to day weather hasn't been influenced greatly. 

 

Don't get me wrong, I'm glad you post these and enjoy reading what you have to say. Just seems the indices have been showing poor most of the winter but really hasn't produced super bad results here....

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Well, just viewed the rest of the run. Wow. This went like I told my colleague earlier today, a total 3 part storm...basically combine 2005 with March 2009 and wham.  For NC anyway . I'd say that big high damming down has followed the synoptic rule book to a tee. Watch for wholesale changes on Euro soon.  That key is just how super charged the Arctic wave is coming across the Pole. This could evolve into a major Southeast Winter storm, long lived. Rings a bell for me to something along the lines of 2009, with days of rain ahead of a major snowstorm.  I can do without any ice, and that 1040 high staying in place and driving northeast winds down here is dangerous looking all the way to near Atlanta. The models never capture true damming right, and this one is a reinforcing, growing CAD shown on GFS atleast. That western system closes off into bowling ball cutoff....cutting through mid South. The Euro was further south, but not as closed. This could easily trend into an incredible Winter storm for many folks, front end, back end and some will be non stop Winter precip. Nightmare to forecasters. But the 5H trends have shown this a while now. I"d bet this evolves into a monster of some type.

well it sounds encouraging from Robert, GSP doesn't seem to be jumping on the wagon yet, guess we're to far out yet.  :violin:

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Only bad thing is, I don't like the Euro not on board! It's not even close to being cold enough for Ice.... And CMC not on board either.. Much cause for concern if you want wintery weather! IMO... :unsure: hopefully at 12z Euro and CMC will at least start trending colder, we'll soon see.

the cmc is the coldest model. It really has a weak storm tho. Mostly snow showers for most.
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Only bad thing is, I don't like the Euro not on board! It's not even close to being cold enough for Ice.... And CMC not on board either.. Much cause for concern if you want wintery weather! IMO...   :unsure:   hopefully at 12z Euro and CMC will at least start trending colder, we'll soon see. 

Robert states that the Euro will start to show changes soon.

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Cold Rain, have the indices looked favorable much at all this winter?? We've had a very cold January....not sure what the indexes showed but I don't they were particularly great. I never really look much beyond 5 days for the indexes anyway positive OR negative. I guess they can show trends but the actually day to day weather hasn't been influenced greatly.

Don't get me wrong, I'm glad you post these and enjoy reading what you have to say. Just seems the indices have been showing poor most of the winter but really hasn't produced super bad results here....

You're exactly right. I just comment on it just because, mostly, and because it helps me to notice trends. This winter is going to make an interesting study, because if you look just at the indexes that we all usually focus on, the ones I post about, you would think winter has sucked and been mostly warm. But like you said, that's far from the case. That said though, I'd still like to see the NAO and PNA show signs of turning around. Even though we've been cold without it, we have not been in a favorable winter weather pattern. We can still get a good winter storm with good timing, and a split flow increases those odds somewhat.

But you're right, there has been so much variability that it's really not of very much value to look more than a few days out. Still, I'm a big :weenie: and I always feel better when I see fantasy cold and snowstorms on the D+10 GFS. :)

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Cold Rain, have the indices looked favorable much at all this winter?? We've had a very cold January....not sure what the indexes showed but I don't they were particularly great. I never really look much beyond 5 days for the indexes anyway positive OR negative. I guess they can show trends but the actually day to day weather hasn't been influenced greatly.

Don't get me wrong, I'm glad you post these and enjoy reading what you have to say. Just seems the indices have been showing poor most of the winter but really hasn't produced super bad results here....

Well for most of the month of January, we have had a --AO, Neutral to very weakly negative NAO that went positive near the end of the month, and a +PNA for most of the month.

December we had a - PNA, ++AO, and a +NAO. Most of the SE was +4-+10. So I'll say the indices did help in January.

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I see a fun (and possibly frustrating) week ahead. With a mixed bag type of storm, the models can fool us inexperienced weather hobbyists. Snow maps can be thrown out the window. It's going to be very important to listen very carefully to the mets on here and on the NWS discussions. Also, some of the experienced members on here like Lookout, stormsfury and others are very knowledgeable about these type of systems.

I see lots of soundings and skew-t diagrams in our future this week. Traditionally, the surface temperatures will come in colder, but you can never overpower a warm nose. Trying to figure out snow vs sleet vs freezing rain and when changeovers will happen will drive you crazy.

Get ready for a wild ride and be ready to learn something about these types of winter systems. Let's enjoy the ride and hope that there is not a devastating ice storm.

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Haven't looked at soundings yet, but most of the time when you have a miller B transferring energy to the coast like the 0z is showing, you end up with a 700-800mb warm layer. Even if 850's and below support snow, you can end up with mostly a sleet event. Not saying that will happen, but it is certainly something to consider. As we all know, Miller A's do not have this warm layer, if you are on the northwest side of the storm. I am sure that most of us in the favored areas are rooting for the cold air damming to be deep enough to prevent a major ice storm. Getting that energy to transfer south of our latitude will be a tall order.

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For the Atlanta metro a miller b consistently modeled would be a death knell for winter weather in out area. That would spell 35-32.1 and rain.

 

Yep, which would be fine with me. But someone would be crushed.  As modeled it's not you every day Miller B.  Not saying we get much of anything.  

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Haven't looked at soundings yet, but most of the time when you have a miller B transferring energy to the coast like the 0z is showing, you end up with a 700-800mb warm layer. Even if 850's and below support snow, you can end up with mostly a sleet event. Not saying that will happen, but it is certainly something to consider. As we all know, Miller A's do not have this warm layer, if you are on the northwest side of the storm. I am sure that most of us in the favored areas are rooting for the cold air damming to be deep enough to prevent a major ice storm. Getting that energy to transfer south of our latitude will be a tall order.

 

Saving grace would be if it cuts off and heads south. Getting a good cutoff though is like playing roulette, you never know where it will end up been screwed many of times with just a cold rain....but those also didn't have much cooler air to funnel to help create a cold enough core. 

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