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Ralph Wiggum

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Posts posted by Ralph Wiggum

  1. 3 hours ago, showmethesnow said:

    Looking over the EPS and really see no major changes from previous runs. The EPS and the GEFS are still worlds apart on the timing on any possible flip in the PAC.

    Control run had a surprise for us though. As @mappyalways says. We Take!!!

    control.thumb.gif.4e71c406fc5ec089fd97ddedb5af02ad.gif

    From www.ecmwf.int for those who want some background to the euro op and control differences:

    "For the medium-range forecasts an ensemble of 52 individual ensemble members are created twice a day. One member is at a higher spatial resolution than the other members (called the HRES at ECMWF), its initial state is the most accurate estimate of the current conditions and it uses the currently best description of the model physics.  The HRES provides a highly detailed description of future weather and averaged over many forecasts it is the most accurate forecast for a certain period, which is currently estimated as 10 days for large scale properties of the atmosphere. However for any particular forecast it may not be the most skilful member of the ensemble. Also when viewed in isolation it cannot provide an estimate of forecast uncertainty or confidence. Another member of the ensemble (CNTL: Control forecast) is at a lower spatial resolution than the HRES but at that lower resolution it utilises the most accurate estimate of the current conditions and the currently best description of the model physics. Its significance for the ensemble is that it provides the unperturbed member to which the perturbations for the remainder of the ensemble members are applied. The perturbed members (50 members) are similar to the CNTL but their initial states and model physics have been perturbed to explore the currently understood range of uncertainty in the observations and the model. They provide a range of possible future weather states. When averaged over many forecasts (although not necessarily for any particular forecast) these have lower skill than either the HRES or the CNTL.  However they do provide an estimate of the forecast uncertainty or confidence. The CNTL and perturbed members are continued beyond fifteen days at a reduced horizontal resolution."

    • Thanks 1
  2. 16 minutes ago, Rtd208 said:

    Its always 10 days away..its always 10 days away..its always 10 days away.

     

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    Jan 15 has always been the date many have pointed to as the 'norm' el Nino December meh pattern into winter flip date.

    GEFS now has the change within 8 days tho likely rushing it. EPS are closer to the Jan 15 but not stuck out in time any longer either. 

    • Haha 1
  3. 4 minutes ago, Ji said:
    14 minutes ago, clskinsfan said:
    If nothing else the models are hinting at some blocking in the medium range. I will worry about the long range in a couple of weeks. Give me a -NAO and I will take my chances from there.

    We have a nao now and we are in a shitout pattern

    Ha I see what u did there

    • Haha 1
  4. 17 minutes ago, AfewUniversesBelowNormal said:

    18z GFS ensembles: It's not looking good. The +PNA/-NAO signal earlier is evaporating (look at how tropically warm it was today), and the long range is just a Stratosphere warming signal. I've seen this before, everytime there is a 10mb warming, the 15 day shows Arctic blocking.. it's a tropical pattern. 

    Randy, can I tell him? Please?

  5. Again, not getting too far out like mid month, but important changes consistently showing now within around 10 days. One important feature I've been watching is the ridge N of HI finally breaking down. Actually takes an interesting progression and moves into the EPO area building heights there like a flip of a switch. This scenario has repeatedly been hinted at and while still a long way out is now within about 10 day which is *fairly* reasonable for key pattern features being shown. 

  6. 5 minutes ago, psuhoffman said:

    Except it ends about to torch us again. 

    I'm personally going to try and ease up on looking for unicorns and epic near-perfect patterns to lock-in at 14 day lead times + and instead am in 10 day and under mode for the time being. If we can start getting true workable patterns to show themselves in the shorter range and actually verify I'll worry about duration after the fact. We should probably shift focus to getting whatever we can then hope it can establish or repeat afterward. Dont we always say get the cold air in first then worry about storms second? Signs on more guidance than not that we will start seeing some decent negative temp anomalies coming sooner than some may realize.

  7. 3 minutes ago, MD Snow said:

    Kind of far fetched seeing as it's the op but 18z does bring back winter by next Wednesday and keeps it around throughout the run. Not much in terms of snow but plenty of cold. Let's see if the GEFS holds again. 

    Again probably wrong in rushing it in  this fast but like I keep hitting on the flip may very well be a sneak attack on us. So many folks are looking out towards Jan 20+ and worrying about details at that range leading up yet missing many important aspects in the medium range which could cause a flip like a light switch and a surprise (short range lead time) storm to usher things in. We'll see but I am about as optimistic that 'its happening ' than I've been in a while.

    Eta: Cue Bob chill to find some index and map to crush my spirit ;)

    • Like 2
  8. 18z GFS continues to advertise the big time pattern flip....very cold and wintry after Jan 9....maybe showing up too fast but it's coming like a freight train.  The fun op fantasy runs we said would start right after the flip of the calendar year are starting to show guys.

    • Like 4
  9. GEFS continue to head towards a much better pattern towards mid month. The ridge N of HI is completely gone, Aleutian low is there, epo ridge, pos pna, split flow out west with energy undercutting, neg AO, and neg NAO. The best part is, the better looks continue to get closer in time and improve later in the run so we arent chasing a day 16 pattern change any longer. Positive adjustments are now showing in 9-11 day range. Yeah I know that is still a way out but to see it nearer in time and not stuck just at day 16 is huge. GEPS are right there with it. EPS are in la la land.....or going to score a huge win tho they are even slowly caving it appears towards the end of their range . Would be lying if I said I didnt like what we are seeing right now. Panic room is probably going to be a barren wasteland in a couple weeks.

    • Like 5
  10. I have had wooden snowman decoration measuring stick thing that goes in the ground. I dont put it out often because I have had it 7 years and it has NEVER snowed at any point that it has been out and in the ground. It is currently outside on display. I will be removing it Friday with the rest of the decor so you can expect a better pattern shortly after.

  11. Fwiw overnight GEFS still consistent in advertising a much batter pattern with more favorable PAC look and HL blocking towards mid month. GEPS took a move towards the GEFS and relatively similar with key features. EPS finally started to budge at the end of the run just a few days later.  These are all positives and we are on schedule  believe it or not still for what many have been advertising irt mid month pattern changes to a more wintry look.

  12. 2 hours ago, Ji said:

    00z eps looks like it's a week behind gefs. Not overly impressive lol

    Ha! Big change imo for the good. Takeaway for me is it actually tries to get there finally for a change. As u said just a little later. Maybe the age-old bias of the euro camp holding things back a few days longer in the West and PAC? Or has that been fixed? In any event a small budge towards the GEFS. The GEPS are now on the GEFS side as well with key teleconnections. Positive way to start 2019.....we can always have hope!

    Happy healthy and snowy New Year everyone!

    • Like 1
  13. 50 minutes ago, Newman said:

    I'm still sticking with around Jan 10th as when we see the pattern change and the 15th as when the show begins. The SSWE is already underway and will yield the AO/NAO blocking that we need. Then we wait for the MJO to cycle into favorable phases 7-8-and possibly 1. But if we can get the MJO to reach phase 8 and then enter the COD, that's so much better than having it enter in, lets say phase 5, because in that situation the unfavorable lag is even longer. I know we're all impatient but really there's nothing we can do. Personally, I think this stratospheric warming event is screwing this winter up, at least so far. We were heading towards the right direction until the MJO stalled in the unfavorable phases, possibly a result of the SSWE as Isotherm has alluded to in other sub forums. The cooler tropospheric temperatures in the tropics correlated to the SSWE likely induced a much better environment for the MJO convection to thrive, notably increasing lapse rates and increasing the convection. Stalling and enhancing the MJO in the unfavorable phases just eliminated a huge chunk of late December and early January due to an enhanced NP jet extension. Then we wait until mid January for any lag to wear off and the PAC jet to relax and what do you know we have a 1 to 1 1/2 months left of winter. Of course, we can still produce in the month of winter we have. Look at February 2010 for the upper Mid-Atlantic. You had the Feb 5-7th storm followed by the Feb 10-12th storm. Parts of southern PA picked up nearly 50" in that week alone.

    Good post. I posted essentially the same ideas in the mid atl thread a few hours ago. GEFS have been consistently pointing to mid January as well as the Euro weeklies. For whatever reason the eps have been against the change or severely delaying that good look. Could be right but for the reasons I mentioned over there and which you echo here I am very optimistic it is on it's way in a couple of weeks. Heck we could even possibly score something as we are still in this crud pattern but taking steps up. Frustrating yes. But it's not like Dec and part of January being punted wasnt expected during this Nino.

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