Jump to content
  • Member Statistics

    17,609
    Total Members
    7,904
    Most Online
    NH8550
    Newest Member
    NH8550
    Joined

January Med/Long Range Discussion


North Balti Zen

Recommended Posts

  • Replies 1.7k
  • Created
  • Last Reply

Where do you get that so early Bob? I see yesterday's still.

click on model guidance then click on day 11 in the left column then click GFS ENS , edit or click Bobs link lol. Important to read the discussion when it comes out to see the % of each model they use to generate their outlooks. The analogs often vary a lot run to run but the GFS Ens but very useful to see repetitive dates. 1983 1978 1966 have been in the mix for a while on the good side, on the dry cold side 1981 1998 keep showing up

Link to comment
Share on other sites

If anyone is looking for a quick "pick me up", check out Bernie Rayno's 7am video.  Definitely worth your 7 minutes.

 

http://videowall.accuweather.com/detail/videos/trending-now/video/2430839568001/winter-is-coming-snow-threat-f

 

If you want the cliff notes--next Monday/Tuesday interesting, later in the week more interesting (for the I95).  

Link to comment
Share on other sites

I posted that period the other day. The blocking config on models seemed similar. But that's like a top end hope. :P

 

It's the whole luck thing. It's like the 10-11th deal. It had potential but the stupid northern stream front runner screwed it up. There's another window down the line but we need some alignment of things that can barely be predicted in the medium range. 

 

I thought the overnight and morning ensembles were pretty meh but definitely not bad until you get late in the runs which comes with a truckload of caveats. There are signs that the Pac flexes the bad kind of way but nothing set in stone. It doesn't look like we are entering a solid extended blocky/cold look though.

 

At least the high latitudes are loaded with AN heights. So even if we have kind of a stinky mid latitude trough/ridge config it could be temporary. Nothing like what we had to do to get out of December's nasty +AO/NAO and eastern ridge. You would think that IF the Pac flexes and we end up with more troughiness in the west and warmer east that it will progress eastward. And any big storm that cuts west could reconfigure everything and open up another window. Just some random thoughts. 

Link to comment
Share on other sites

90-95% of the time, serious threats don't materialize until 2-4 days in advance. Once the warm period passes, we'll be in a good "pattern" and that's when we can take the operationals seriously. Post 1/15 remains my target period, but I'm hoping for a fluke with that 2nd "event" that's been on, though mostly off, the radar.

Link to comment
Share on other sites

0z EPS and 6z GEFS still supporting the coastal around idea the 16-18. 15 day mean snowfall for DCA is 1.5" on the EPS.

I still like the 15-20th to deliver.

 

Pretty sure the ensembles were calling for a snowstorm this weekend several days ago...that is why DT went woof...the ensembles are only correct when they scream warm

That window has the most potential we have seen, but I am not sure I would say ensembles support something that strongly.  I know snow maps are often useless but I have found over the last few years just glancing at the ensemble avg 8-15 day snowfall to be telling actually.  In the last few years when we were about to get hit with a snowy period that were showing some impressive outputs.  I have some images saved of ensemble avg snowfalls of well over 12" across our area, some over 20.  For this period were looking at 1-3" run to run.  That is kinda weak sauce honestly compared to what they typically show when were about to get a good period.  Yes the h5 pattern is supportive in that time, but the problem with that is there are more examples when a good pattern doesnt produce then did, we just remember the ones that did.  Small issues can ruin a good pattern overall.  Models to me are saying something isnt quite right and its more likely we miss then hit.  We have a chance, there are several members in each run that do hit us with a storm but more miss. 

I keep worrying about a procrastination winter that never produces! I think we were spoiled the last 2 years, but I also think we waited quite a while to get snow last year as well.. kept hoping in January and it took until February to deliver. It was plenty cold last January!

I am not worried yet about the whole winter.  There is of course a chance we go wall to wall suckage as 73 and 98 loom in the analogs, but there are also 41, 58, 66, and 83 as examples where we went pretty late into winter then got something good.  78 keeps popping up in analogs with dates a week or two before things got good so that gives hope also.  58 started to develop blocking mid januaray but it wasnt until mid feb that the pattern really produced.  (yea i know we had a storm dec 58 but otherwise it was warm early winter)  It wouldn't surprise me if we have to wait until feb then get a nice hit. 

 

Something to ponder with today's CPC d11+ analogs...

 

attachicon.gifanalogs.JPG

 

When we have nino years with such drastically different results like 73, 98, 78, and 66 showing up, it makes me ponder that very small factors can turn our snow results either way, and luck could have as much to do with it as anything else.  There could also be minor players outside the nino that flip the pattern either way.  On top of that, if you look at the h5 differences, its a very small change between a great pattern like 66 or 78, and the dumpster fire that was 98.  Basically put a ridge at h5 over the northeast while keeping everything else the same and it turns a great pattern into a disaster.  Its a big difference in ground truth for such a minor change at h5.  I would like to see some big juiced up systems start coming out of the gulf though, that at least would make me feel more confident we could score a big hit with some luck during a cold period.  The current northern stream dominated pattern worries me that we have a lower probability of hitting during windows of opportunity. 

Link to comment
Share on other sites

90-95% of the time, serious threats don't materialize until 2-4 days in advance. Once the warm period passes, we'll be in a good "pattern" and that's when we can take the operationals seriously. Post 1/15 remains my target period, but I'm hoping for a fluke with that 2nd "event" that's been on, though mostly off, the radar.

 

It will be particularly the case in this pattern since the GFS will be of no use since it squashes everything coming out of Texas or the Gulf States and the Euro just is not that good a model anymore beyond day 6 so I think we are likely going to be somewhat surprised when something does finally materialize.   I said places down south like RDU/ATL/CLT may have 3-4 days notice at best, that was about all they had in ATL in 2014 for that snow event.

Link to comment
Share on other sites

90-95% of the time, serious threats don't materialize until 2-4 days in advance. Once the warm period passes, we'll be in a good "pattern" and that's when we can take the operationals seriously. Post 1/15 remains my target period, but I'm hoping for a fluke with that 2nd "event" that's been on, though mostly off, the radar.

Yeah lots of moving parts. Still possible to time something with the trough moving in late in the weekend. If it can sharpen a bit, and we can time it right, still could score something early next week. Its not dead yet.

Link to comment
Share on other sites

It will be particularly the case in this pattern since the GFS will be of no use since it squashes everything coming out of Texas or the Gulf States and the Euro just is not that good a model anymore beyond day 6 so I think we are likely going to be somewhat surprised when something does finally materialize.   I said places down south like RDU/ATL/CLT may have 3-4 days notice at best, that was about all they had in ATL in 2014 for that snow event.

Do you think all of the resolution upgrades to the euro has made it less reliable to get "general" ideas right in the long range?  too much noise throwing it off on a tangent sometimes.  Just a thought, and before someone slams with with verification stats showing how much better it is now, I am talking more consistency vs accuracy here.  It can be more accurate overall but if the track of a major system flips around every few runs its hard to use it as reliably. 

Link to comment
Share on other sites

Yeah lots of moving parts. Still possible to time something with the trough moving in late in the weekend. If it can sharpen a bit, and we can time it right, still could score something early next week. Its not dead yet.

I'll never forget how everyone was keying on the the next short wave back around 1/22/00 and that's why, I believe, many mets were reluctant to believe the system would come north. Of course, the models weren't bringing it north either, but during the morning and afternoon of 1/24/00 it sure looked like it was coming north. Hence, it's always hard to give up on something this far away regardless of how bad it may look at 6-7 days.

Link to comment
Share on other sites

Mount Holly on the potential for early next week..

 

FOR SUNDAY AND MONDAY...A POTENTIAL MERGING OF THE FLOW DURING THIS
TIME FRAME, WHICH STRENGTHENS AN UPPER-LEVEL TROUGH INTO THE EASTERN
HALF OF THE NATION DURING THIS TIME FRAME. THE TIMING AND POSITION
OF THIS TROUGH WILL BE CRITICAL TO OUR SENSIBLE WEATHER. THERE IS
SOME POTENTIAL FOR A STORM TO DEVELOP ACROSS THE GULF COAST STATES
SUNDAY THEN TRACK NORTHEASTWARD WITH THE INCOMING AND SHARPENING
UPPER-LEVEL TROUGH. THERE CONTINUES TO BE VARIABILITY AMONG THE
DETERMINISTIC AND ENSEMBLE GUIDANCE, WHICH IS UNDERSTANDABLE GIVEN
ALL THE MOVING PIECES AND THE INITIAL SPLIT FLOW. WHETHER OR NOT A
STORM DEVELOPS AND AFFECTS OUR AREA LATE SUNDAY INTO MONDAY, MUCH
COLDER AIR LOOKS TO FOLLOW AS A COLD FRONT SWEEPS THROUGH SUNDAY
NIGHT INTO MONDAY.

Link to comment
Share on other sites

I'll never forget how everyone was keying on the the next short wave back around 1/22/00 and that's why, I believe, many mets were reluctant to believe the system would come north. Of course, the models weren't bringing it north either, but during the morning and afternoon of 1/24/00 it sure looked like it was coming north. Hence, it's always hard to give up on something this far away regardless of how bad it may look at 6-7 days.

 

I'm not sure a reverse bust like that is possible anymore. Models have come a long long ways. A 400+ mile bust inside of 48 hours seems highly unlikely. Models can blow qpf/ptype etc at very short range (by short range I mean as the event is underway. lol). But the large synoptic pieces are usually nailed within typical margin of error once you get inside of 48 hours. Even miller B screw jobs which are quite difficult to get right are usually mostly figured out inside of 48 hours nowadays.

 

By me posting this we'll probably see some sort of epic 24 hour bust or reverse bust this winter. haha 

Link to comment
Share on other sites

I'm not sure a reverse bust like that is possible anymore. Models have come a long long ways. A 400+ mile bust inside of 48 hours seems highly unlikely. Models can blow qpf/ptype etc at very short range (by short range I mean as the event is underway. lol). But the large synoptic pieces are usually nailed within typical margin of error once you get inside of 48 hours. Even miller B screw jobs which are quite difficult to get right are usually mostly figured out inside of 48 hours nowadays.

 

By me posting this we'll probably see some sort of epic 24 hour bust or reverse bust this winter. haha 

HAHA! In 2014 we saw that crazy south trend on storms! They looked like they would be north and then just moved south each run! That was crazy! That was a blessed year of oddities that worked in our favor! 

Link to comment
Share on other sites

HAHA! In 2014 we saw that crazy south trend on storms! They looked like they would be north and then just moved south each run! That was crazy! That was a blessed year of oddities that worked in our favor! 

 

Incremental stuff like that is pretty normal. Showing a 400 mile no chance whiff on all guidance (I assume all guidance but I didn't look at models back then) become a HECS inside of 48 hours is a whole different thing. I know the headlines weren't hoisted until the event was under way. I (like every other weenie) was watching radar and thinking OMG!!! It was a great storm on so many levels. 

Link to comment
Share on other sites

Archived

This topic is now archived and is closed to further replies.

Guest
This topic is now closed to further replies.
  • Recently Browsing   0 members

    • No registered users viewing this page.

×
×
  • Create New...