Jump to content

Carvers Gap

Members
 View Profile  See their activity

  • Posts

    15,666

  • Joined

  • Last visited

 Content Type 

Everything posted by Carvers Gap

  1. Carvers Gap
    And that could be a model bias at play there. I am always suspicious of EPS troughs in the Southwest. I mean those actually happen, but I about halfway assume each time the model is wrong.
  2. Carvers Gap
    Good thing, Holston, that IOD region I think is maybe phase 1 and 2 of the MJO. That is what JB was talking about...1,2 and 6 are firing at the same time and it is creating a conflicting MJO signal. But you can see, it is not a true null where the MJO region is just dead. There are two regions firing simultaneously.
  3. Carvers Gap
    44 here in Kingsport and cloudy. After a week's worth of temps at near record levels, I was not ready for how cold it felt today! I guess it is all relative.
  4. Carvers Gap
    Just wondered in. LOL. Such a lovely place....You can check out any time you like, but you can never leave.
  5. Carvers Gap
    Tellico, do you have a weather background? Man, you know your stuff.
  6. Carvers Gap
    Maybe we just need Powell to post prior to each model suite. Seems like the Euro got your message. With your post just prior to 12z tomorrow, could you mention heavy snows inland?
  7. Carvers Gap
    Surface tracks from Louisiana just have better results in NE TN. Coastal storms here drive up snow totals. And that is a different outcome for those 150 miles to my west. My area does not benefit from upslope, unless the upslope comes from the southeast on a coastal. JC gets upslope. My areas does not. The lack of a -NAO does not surprise me due to the AMO phase. Problem is, tough to prove anything until that -AMO pops again. Personally, I think the Pacific needs an ENSO phase to shake up the gradient a bit. Preferably, it would be a strong La Nina. Yeah, that would waste a winter but would cool the SSTs considerably and potential reset the Pacific by ridding it of amped flow. I suspect that is coming soon. If one looks at both -AMOs and -QBOS...those are really good indicators(not by themselves) of potential for strong blocking.
  8. Carvers Gap
    In E TN, not so much the Plateau or middle/west TN, we need blocking in the Atlantic. A lot of our snow comes from coastals. I think for that past 30 years, the pattern has been very dependent on the Pacific. The Pac drives the bus and it going to for a few more years. It is upstream as well. When it is bad, no winter. That coincides with AMO phase. When it is negative, we get plenty of Atlantic blocking. I was in my teens when the AMO flipped positive. But you could tell(without ever knowing that index) that winter changed drastically around 1988 and 89. That is when it flipped. I remember telling my parents that cold winters were over. They looked at my like I was crazy. Winters had been cold their entire lives. But I knew that something had changed, because the cold just wasn't there. In E TN, a -NAO is a big driver. If I remember correctly, someone said seven of the last eight winters have seen positive NAOs. Some of those winters have been decent, but when the Pacific is bad...non-winter are experienced like we are having so far. The -NAO increased the number of good winters because it could pick up the slack when the Pac was hostile. Right now, we have basically one ocean that an help us and not two. This winter so far is a prime example. Those surface lows in the GOM are far more common and much stronger during -AMOs. Would be interesting to get some data on the occurrence of Gulf lows since the AMO went positive. It makes sense, that Atlantic block is what forces those lows northeast. No AMO and that block is rarer and those perfect tracks rarer. So, I am not really one who buys the whole temp deal...I think the actual track is different because of the AMO cycle. Get that track back, and snow will be more common in E TN.
  9. Carvers Gap
    That definitely does not fit what I have read. Some of what I have read comes from isotherm's forecasts and from Joe D'Aleo. I do understand the four categories. I have read other mets on other subforums that have stated that a transitional QBO(falling) into negative results in blocking...the actual trajectory is what matters. If you have a link to share that debunks that, I would be glad to read it. I don't doubt the QBO is complex and has many unknowns. One of the things I have read is that it in combination with a La Nina it is a strong cold indicator in the East. However, once one adds in solar, enso, and trajectory as variables...not many analogs to begin with. I do know this, many of our great winters have negative QBOs. Not all, but many. I actually don't agree that the QBO falling in negative territory is a hindrance. It may very well be too weak at this point in relation to an MJO that has been on steroids during westerly and easterly QBO phases with the same result - a warm East coast winter. But I don't think this particular winter will prove or disprove that as the MJO with warm waters west of the dateline is going to be a problem no matter what the phase. If we do happen to see some blocking, I don't think that will be coincidental.
  10. Carvers Gap
    Yep, super close just prior to 200. Similar to what Powell just talked about ironically!
  11. Carvers Gap
    LOL...I was just commenting at how many acronyms have to be correct now. And I think sometimes it is easy to overthink things for sure. I am a purist in that regard. Give me a slp over Louisiana and track it inside Hatteras.
  12. Carvers Gap
    I wonder if giphy has a link that times out. I could see back to last January. How long have you had it?
  13. Carvers Gap
    Man, @Holston_River_Rambler, I worked through that giphy account you have. What a fantastic library of model runs from the past year. Don't throw those out. That library could be really useful to someone studying wx models, their verification, and old patterns in relation to the forum area. Very cool.
  14. Carvers Gap
    Here is the MJO from this mornings RMM1 forecast in combination with the GEFS. One can see now the cave to the EURO solution. Also, note the head fake into six and that last segment heading back into the COD. The EMON had that earlier this week. It is likely why the EPS flipped warmer on modeling and also why the GEFS likely took until today to flip. Now, the good thing is that it does not go into 6 and might mean the mega eastern ridge reforming is transient. That MJO forecast correlates nicely with modeling. There is a cool down as it heads into 7 and a crash into the COD. The eastern ridge returns as it crosses towards 6. Then modeling balks a bit late in the LR in terms of holding the ridge in the East. At this point, the MJO is still driving. We will hope that it heads to 8,1, and 2 from this point on OR stay in the COD.
  15. Carvers Gap
    So you might wonder why the head fake on ensembles. Again, I had a long post earlier on the MJO which likely is approaching a false null. Simply put, there is a cold phase region with convection and a warm phase region with convection. It is highly likely that the Modoki El Nino in connection with a warm Pac Basin(low gradient) is juicing the phase 6 convection in an almost endless cycle. Ensembles last week had an MJO arching high into 7 with a probable phase 8 ensuing. Modeling over the weekend began to take the MJO forecast back into the COD and loop it towards phase 6 but stall it just short. If one buys the theory that it is not actually in the COD, the nudge towards phase 6 may mean the phase 6 is stronger than competing phases 8/1/2 convection in modeling. As soon as that trajectory in 7 curled back towards 6 on the COD forecast, modeling responded almost immediately. The Euro has led the way on this. Does it continue to lead the way? Likely but maybe not. As we hit February, the wavelengths will change due to the seasonal transition. Let's see if the MJO follows the early week EMON in that it stalls before reaching 6 and curls across he COD. One last note regarding the QBO and those record levels of a strong PV...The QBO is known to cause high latitude blocking which disrupts the PV. Due to the winter QBO beginning in a positive phase at 30mb, one could make a case that particular mechanism(negative QBO) was not in place to disrupt the tightening PV. That strong PV is another culprit in our warm pattern. There are not enough disruptions and waves to send cold southward. We often like to say that PVs pinwheel cold southeastward. With the PV so strong, those pinwheeling waves of cold are staying tighter to the pole. One last word of caution, if the oncoming -QBO induces high latitude blocking during summer...it could be quite warm in the East if La Nina develops. That would also lead to early season blocking next fall. Feast or famine deal. Finally, if we are in late January talking about LR forecast, the QBO, a strong PV, and the MJO...the pattern is likely not good. I can't find even a snowstorm in the LR. Hopefully that changes.
  16. Carvers Gap
    The 6z GEFS broke towards the EPS over night, but gets there more slowly. There outcome is a trough in the west/southwest. The GEPS is the loan outlier now of global ensembles with a nice eastern trough throughout much of its run. We will see where the MJO is today. Mr, Kevin. the QBO is quite dependent on solar phases and possibly ENSO state. Joe D'Aleo has a graphic(regarding the QBO and solar phase) out there along with some research that he has shared by others. For example, a strongly positive(or westerly) QBO could actually help us during a solar maximum. That produces a western ridge. The QBO could benefit us now if it goes negative and holds. As long as it doesn't stall, it is in our favor. A descending QBO in the negative phase usually correlates to an eastern trough with a slight SER if the solar connection research is correct. In general, find your favorite winters and during many of them you will find the QBO negative at 30mb. As for the lag time that it takes? Tough to know. With it being in a phase change, I have a tendency to think it is not much of a driver at this point at all. I do think at some point during later winter or early spring, we might find ourselves with a mix of A and C if it finally kicks-in as a driver. I do think there is much to learn about the QBO. Right now, the MJO and a warm Pacific basin are driving this bus.
  17. Carvers Gap
    One, I bet they had that ready to roll before 12z. Two, I don't think it is a bad forecast. I said earlier, if I hadn't seen a model, I would go seasonal to BN for February. No matter how bad the EPS looked on Thursday, it still doesn't reach into February. As Holston and I discussed earlier...it may be that this step down is similar to the three week step down that we had during October which led to a cold November. I am firmly irritated that modeling lost the pattern during the past 36 hours. The MJO is driving the bus right now. We need it our of phase 5/6 and in the COD or cold phases. I hold little hope for the rest of January, but I am definitely not throwing in the towel yet for February. If we are having this conversation again in two weeks and I am having to look at 10 day models for hope...time to move onto spring. I will be surprised if we get a sustained 3-4 cold pattern. I think a 10-14 day pattern is our best hope. If that 10-14 day time frame is cold enough, that CPC map might verify. I actually don't think Feb is dependent on the QBO. We need the MJO region to settle down. FTR, the QBO has not stalled this winter.
  18. Carvers Gap
    The CFSv2 is definitely cold...so if we go cold in February, it will score the coup along with the Euro Weeklies from the last two runs. Edit: The 18z CFSv2 is -10F over the next 30 days regarding anomalies. Nothing else close to that. Would be something to see that verify. We would all be pretty happy. The Euro Weeklies are -1 to -2F. I think a lot of that comes down to how the MJO has been handled. The Euro has been head and shoulders above other modeling this winter regarding that. It pretty much got the closest to the last loop correct. The CFSv2, GEFS, and JMA were all pretty much wrong. The Canadian might have been close. But like I said earlier, the MJO may very well be split between two areas of convection. It may be in null in error. If so, the battle is between 8/1/2 and 6/7 will decide the next few weeks. Now, as we get closer to shoulder season, the Euro is pretty much equal to the rest.
  19. Carvers Gap
    Yeah, the CFS has been pretty good. It's MJO depiction a few weeks ago was pretty bad and might be now. But it actually nailed the NE snowstorm a week or so ago. You could see it had predicted it by the colder temps along the coast. JB actually noted that interesting detail. I actually have been looking at each run of the CFSv2 this year. I haven't in years past because it was so erratic. It actually has been consistent this year and worthy of consideration in my book. Plus, it's always a little colder...so it is more fun to look at than the torch runs. It's Weeklies haven't been any worse than any other model's weeklies.
  20. Carvers Gap
    BTW, no room needed for me. I am riding this all of the way to the first week of April. Then it is garden and fishing time. If it gets really crappy, I may head out West for spring and hang out in their snow. That is my real life panic room - 6,000'+ near Yellowstone. LOL.
  21. Carvers Gap
    Great post...Just goes to show there is more than one avenue to a non-winter. Commonality is a very active MJO in phase 6 FWIW and active IO. That IO spike gave us the shaft in December I think. Fab February, man! Come-on!!!! Who needs hope when we have...well, iris blooming!!! LOL.
  22. Carvers Gap
    So far, this is eerily similar to last winter. An early event and then poof. I had noted a few weeks ago that the West had not had enough snow. Man, go look at some of the articles out of the Swan Valley in eastern Idaho and look at how badly those roads drifted. Was incredible. Snowpack out there has gone from BN to normal(or above) in just two weeks!
  23. Carvers Gap
    ...And I should add that no matter how warm the pattern, one cold front timed with precip could yield a big winter storm. I suspect we see a couple of East coast storms before things run their course. Either way, I am getting my garden order ready and working on a schedule for getting the garden turned over one last time before spring. Going to get my spring stuff in soon which will include onions and fava beans. Probably going to start some stuff from seeds this year. Used to do that quite a bit....
  24. Carvers Gap
    Understood. Transition was about three weeks. The first "front" broke the heat around the 8th. The heat kept rebounding very similarly to what we are seeing now on modeling. I am actually glad that you brought it up - it made me go back and look. I had forgotten the transition was that long. It may well be that we are seeing a similar transition...or it may just be the end of winter. Tough to tell. But if the transition is similar, we will see a few cold fronts coupled with some extreme warmth in between...then the hammer will drop. Not saying that will happen, but it would be very cool if it did. I do remember thinking that fall was finally here...then the next wave of heat would arrive. It was also very dry around that time which made the heat worse. Interestingly, the EPS pretty much shuts off the spigot to much of NA not including TX and Seattle. Otherwise, TN is very dry. ...I may go back and look at the Euro Weeklies for precip tendencies. I highly doubt their 500 pattern is anywhere near correct at the 12z run basically sank the 0z like the Bismark. If I remember correctly, tonight's version of the Weeklies did have a recurring SER. If that had been run from the afternoon's run...whew.
  25. Carvers Gap
    It was not quick. It was agonizingly slow. I actually went back and looked at TRI's temps for October. Pattern broke on October 8 even though the following week was warm. It just wasn't as extreme. We then went back and forth for the rest of the month with two cold fronts that had BN air. We thought we had finally gotten out of the pattern, and were hit with yet another extreme period of warmth during the last week. Then, the hammer finally dropped. But no, the pattern broke and took three weeks to step down. Very similar to what we are seeing right now and equally as frustrating. LOL. So, maybe that is a good find, Holston.
×
×
  • Create New...